{
 "version": "2.2",
 "instance": {
  "d29563d20f.htm": {
   "nsprefix": "aeg",
   "nsuri": "http://www.aegon.com/20251231",
   "dts": {
    "schema": {
     "local": [
      "aeg-20251231.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd",
      "https://www.xbrl.org/2023/calculation-1.1.xsd",
      "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd",
      "https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
      "https://www.xbrl.org/dtr/type/2024-01-31/types.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd",
      "https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd",
      "https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd",
      "https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd",
      "https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions-ea/rol_ifrs_ea-dim_2025-03-27.xsd",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions/rol_full_ifrs-dim_2025-03-27.xsd",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd",
      "https://xbrl.sec.gov/country/2025/country-2025.xsd",
      "https://xbrl.sec.gov/currency/2025/currency-2025.xsd",
      "https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd",
      "https://xbrl.sec.gov/cyd/2025/cyd-af-2025.xsd",
      "https://xbrl.sec.gov/cyd/2025/cyd-af-sub-2025.xsd",
      "https://xbrl.sec.gov/dei/2025/dei-2025.xsd",
      "https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd",
      "https://xbrl.sec.gov/ecd/2025/ecd-sub-2025.xsd",
      "https://xbrl.sec.gov/exch/2025/exch-2025.xsd",
      "https://xbrl.sec.gov/naics/2025/naics-2025.xsd",
      "https://xbrl.sec.gov/sic/2025/sic-2025.xsd",
      "https://xbrl.sec.gov/stpr/2025/stpr-2025.xsd"
     ]
    },
    "inline": {
     "local": [
      "d29563d20f.htm"
     ]
    },
    "definitionLink": {
     "remote": [
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions-ea/dim_ifrs_ea_2025-03-27_role-995000.xml",
      "https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/dimensions/dim_full_ifrs_2025-03-27_role-995000.xml"
     ]
    }
   },
   "keyStandard": 582,
   "keyCustom": 859,
   "axisStandard": 67,
   "axisCustom": 22,
   "memberStandard": 127,
   "memberCustom": 458,
   "hidden": {
    "total": 20,
    "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full": 2,
    "http://www.aegon.com/20251231": 14,
    "http://xbrl.sec.gov/dei/2025": 4
   },
   "contextCount": 3784,
   "entityCount": 1,
   "segmentCount": 657,
   "elementCount": 2875,
   "unitCount": 13,
   "baseTaxonomies": {
    "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full": 5662,
    "http://xbrl.sec.gov/dei/2025": 45,
    "http://xbrl.sec.gov/cyd/2025": 14,
    "http://fasb.org/srt/2025": 3,
    "http://xbrl.sec.gov/ecd/2025": 1
   },
   "report": {
    "R1": {
     "role": "http://www.aegon.com/role/CoverPage",
     "longName": "1001 - Document - Cover Page",
     "shortName": "Cover Page",
     "isDefault": "true",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "1",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R2": {
     "role": "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
     "longName": "1002 - Statement - Consolidated income statement of Aegon Ltd.",
     "shortName": "Consolidated income statement of Aegon Ltd.",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "2",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InsuranceRevenue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestIncomeOnFinancialInstrumentsUsingTheEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R3": {
     "role": "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
     "longName": "1003 - Statement - Consolidated statement of comprehensive income of Aegon Ltd.",
     "shortName": "Consolidated statement of comprehensive income of Aegon Ltd.",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "3",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R4": {
     "role": "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
     "longName": "1004 - Statement - Consolidated statement of financial position of Aegon Ltd.",
     "shortName": "Consolidated statement of financial position of Aegon Ltd.",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "4",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:FinancialAssetsExcludingDerivatives",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R5": {
     "role": "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
     "longName": "1005 - Statement - Consolidated statement of changes in equity of Aegon Ltd.",
     "shortName": "Consolidated statement of changes in equity of Aegon Ltd.",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "5",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2022",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2022_RevaluationReserveMemberifrsfullComponentsOfEquityAxis",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R6": {
     "role": "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical",
     "longName": "1006 - Statement - Consolidated statement of changes in equity of Aegon Ltd. (Parenthetical)",
     "shortName": "Consolidated statement of changes in equity of Aegon Ltd. (Parenthetical)",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "parenthetical",
     "menuCat": "Statements",
     "order": "6",
     "firstAnchor": {
      "contextRef": "P01_01_2023To12_31_2023",
      "name": "aeg:DiscontinuedOperationsThatWillNotBeReclassifiedNetOfTaxReclassifiedFromReserveOfDiscontinuedOperationsHeldForSale",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2023To12_31_2023",
      "name": "aeg:DiscontinuedOperationsThatWillNotBeReclassifiedNetOfTaxReclassifiedFromReserveOfDiscontinuedOperationsHeldForSale",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R7": {
     "role": "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
     "longName": "1007 - Statement - Consolidated cash flow statement of Aegon Ltd.",
     "shortName": "Consolidated cash flow statement of Aegon Ltd.",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "",
     "menuCat": "Statements",
     "order": "7",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLossBeforeTax",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProfitLossBeforeTaxFromDiscontinuedOperations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R8": {
     "role": "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical",
     "longName": "1008 - Statement - Consolidated cash flow statement of Aegon Ltd. (Parenthetical)",
     "shortName": "Consolidated cash flow statement of Aegon Ltd. (Parenthetical)",
     "isDefault": "false",
     "groupType": "statement",
     "subGroupType": "parenthetical",
     "menuCat": "Statements",
     "order": "8",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InterestReceivedClassifiedAsOperatingActivities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InterestReceivedClassifiedAsOperatingActivities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R9": {
     "role": "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc",
     "longName": "995447 - Disclosure - Insider Trading Policies and Procedures",
     "shortName": "Insider Trading Policies and Procedures",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "9",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ecd:InsiderTrdPoliciesProcAdoptedFlag",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ecd:InsiderTrdPoliciesProcAdoptedFlag",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R10": {
     "role": "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure",
     "longName": "995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure",
     "shortName": "Cybersecurity Risk Management and Strategy Disclosure",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "10",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "cyd:CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "cyd:CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R11": {
     "role": "http://www.aegon.com/role/GeneralInformation",
     "longName": "999001 - Disclosure - General information",
     "shortName": "General information",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "11",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R12": {
     "role": "http://www.aegon.com/role/MaterialAccountingPoliciesInformation",
     "longName": "999002 - Disclosure - Material accounting policies information",
     "shortName": "Material accounting policies information",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "12",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfMaterialAccountingPolicyInformationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfMaterialAccountingPolicyInformationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R13": {
     "role": "http://www.aegon.com/role/CriticalAccountingEstimatesAndJudgmentInApplyingAccountingPolicies",
     "longName": "999003 - Disclosure - Critical accounting estimates and judgment in applying accounting policies",
     "shortName": "Critical accounting estimates and judgment in applying accounting policies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "13",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R14": {
     "role": "http://www.aegon.com/role/InvestmentIncome",
     "longName": "999004 - Disclosure - Investment income",
     "shortName": "Investment income",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "14",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInvestmentIncomeExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInvestmentIncomeExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R15": {
     "role": "http://www.aegon.com/role/FinancialRisks",
     "longName": "999005 - Disclosure - Financial risks",
     "shortName": "Financial risks",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "15",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFinancialRiskManagementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFinancialRiskManagementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R16": {
     "role": "http://www.aegon.com/role/FinancingNetInvestmentResult",
     "longName": "999006 - Disclosure - Financing net investment result",
     "shortName": "Financing net investment result",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "16",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R17": {
     "role": "http://www.aegon.com/role/SegmentInformation",
     "longName": "999007 - Disclosure - Segment information",
     "shortName": "Segment information",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "17",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R18": {
     "role": "http://www.aegon.com/role/InsuranceRevenue",
     "longName": "999008 - Disclosure - Insurance revenue",
     "shortName": "Insurance revenue",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "18",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R19": {
     "role": "http://www.aegon.com/role/InsuranceServiceExpense",
     "longName": "999009 - Disclosure - Insurance service expense",
     "shortName": "Insurance service expense",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "19",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInsuranceServiceExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInsuranceServiceExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R20": {
     "role": "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeld",
     "longName": "999010 - Disclosure - Net income / (expenses) on reinsurance held",
     "shortName": "Net income / (expenses) on reinsurance held",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "20",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfNetExpensesOnReinsuranceHeldExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfNetExpensesOnReinsuranceHeldExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R21": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResult",
     "longName": "999011 - Disclosure - Insurance Net Investment Result",
     "shortName": "Insurance Net Investment Result",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "21",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfInsuranceContractsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfInsuranceContractsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R22": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResult",
     "longName": "999012 - Disclosure - Other net investment result",
     "shortName": "Other net investment result",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "22",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R23": {
     "role": "http://www.aegon.com/role/ResultsFromFinancialTransactions",
     "longName": "999013 - Disclosure - Results from financial transactions",
     "shortName": "Results from financial transactions",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "23",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R24": {
     "role": "http://www.aegon.com/role/FeesAndCommissionIncome",
     "longName": "999014 - Disclosure - Fees and commission income",
     "shortName": "Fees and commission income",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "24",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfFeeAndCommissionIncomeExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfFeeAndCommissionIncomeExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R25": {
     "role": "http://www.aegon.com/role/OtherOperatingExpenses",
     "longName": "999015 - Disclosure - Other operating expenses",
     "shortName": "Other operating expenses",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "25",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R26": {
     "role": "http://www.aegon.com/role/CommissionsAndExpenses",
     "longName": "999016 - Disclosure - Commissions and expenses",
     "shortName": "Commissions and expenses",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "26",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfCommissionsAndExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfCommissionsAndExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R27": {
     "role": "http://www.aegon.com/role/InterestChargesAndRelatedFees",
     "longName": "999017 - Disclosure - Interest charges and related fees",
     "shortName": "Interest charges and related fees",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "27",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfInterestExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfInterestExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R28": {
     "role": "http://www.aegon.com/role/OtherIncomeCharges",
     "longName": "999018 - Disclosure - Other income / (charges)",
     "shortName": "Other income / (charges)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "28",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R29": {
     "role": "http://www.aegon.com/role/IncomeTax",
     "longName": "999019 - Disclosure - Income tax",
     "shortName": "Income tax",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "29",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R30": {
     "role": "http://www.aegon.com/role/SharesInGroupCompanies",
     "longName": "999020 - Disclosure - Shares in group companies",
     "shortName": "Shares in group companies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "30",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R31": {
     "role": "http://www.aegon.com/role/EarningsPerShare",
     "longName": "999021 - Disclosure - Earnings per share",
     "shortName": "Earnings per share",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "31",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R32": {
     "role": "http://www.aegon.com/role/DividendPerCommonShare",
     "longName": "999022 - Disclosure - Dividend per common share",
     "shortName": "Dividend per common share",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "32",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDividendsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDividendsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R33": {
     "role": "http://www.aegon.com/role/CashAndCashEquivalents",
     "longName": "999023 - Disclosure - Cash and cash equivalents",
     "shortName": "Cash and cash equivalents",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "33",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R34": {
     "role": "http://www.aegon.com/role/Investments",
     "longName": "999024 - Disclosure - Investments",
     "shortName": "Investments",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "34",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R35": {
     "role": "http://www.aegon.com/role/Derivatives",
     "longName": "999025 - Disclosure - Derivatives",
     "shortName": "Derivatives",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "35",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R36": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociates",
     "longName": "999026 - Disclosure - Investments in joint ventures and associates",
     "shortName": "Investments in joint ventures and associates",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "36",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsInJointVenturesAndAssociates",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsInJointVenturesAndAssociates",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R37": {
     "role": "http://www.aegon.com/role/DeferredExpenses",
     "longName": "999027 - Disclosure - Deferred expenses",
     "shortName": "Deferred expenses",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "37",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDeferredExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDeferredExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R38": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivables",
     "longName": "999028 - Disclosure - Other assets and receivables",
     "shortName": "Other assets and receivables",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "38",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R39": {
     "role": "http://www.aegon.com/role/IntangibleAssets",
     "longName": "999029 - Disclosure - Intangible assets",
     "shortName": "Intangible assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "39",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R40": {
     "role": "http://www.aegon.com/role/OtherEquityInstruments",
     "longName": "999030 - Disclosure - Other equity instruments",
     "shortName": "Other equity instruments",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "40",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R41": {
     "role": "http://www.aegon.com/role/SubordinatedBorrowings",
     "longName": "999031 - Disclosure - Subordinated borrowings",
     "shortName": "Subordinated borrowings",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "41",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R42": {
     "role": "http://www.aegon.com/role/TrustPassThroughSecurities",
     "longName": "999032 - Disclosure - Trust pass-through securities",
     "shortName": "Trust pass-through securities",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "42",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R43": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeatures",
     "longName": "999033 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "43",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R44": {
     "role": "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeatures",
     "longName": "999034 - Disclosure - Investment contracts without discretionary participation features",
     "shortName": "Investment contracts without discretionary participation features",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "44",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfInvestmentContractsLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfInvestmentContractsLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R45": {
     "role": "http://www.aegon.com/role/Borrowings",
     "longName": "999035 - Disclosure - Borrowings",
     "shortName": "Borrowings",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "45",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R46": {
     "role": "http://www.aegon.com/role/Provisions",
     "longName": "999036 - Disclosure - Provisions",
     "shortName": "Provisions",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "46",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R47": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlans",
     "longName": "999037 - Disclosure - Defined benefit plans",
     "shortName": "Defined benefit plans",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "47",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R48": {
     "role": "http://www.aegon.com/role/DeferredTax",
     "longName": "999038 - Disclosure - Deferred tax",
     "shortName": "Deferred tax",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "48",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R49": {
     "role": "http://www.aegon.com/role/OtherLiabilities",
     "longName": "999039 - Disclosure - Other liabilities",
     "shortName": "Other liabilities",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "49",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R50": {
     "role": "http://www.aegon.com/role/Accruals",
     "longName": "999040 - Disclosure - Accruals",
     "shortName": "Accruals",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "50",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R51": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvency",
     "longName": "999041 - Disclosure - Capital management and solvency",
     "shortName": "Capital management and solvency",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "51",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R52": {
     "role": "http://www.aegon.com/role/FairValue",
     "longName": "999042 - Disclosure - Fair value",
     "shortName": "Fair value",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "52",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFairValueMeasurementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFairValueMeasurementExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R53": {
     "role": "http://www.aegon.com/role/CommitmentsAndContingencies",
     "longName": "999043 - Disclosure - Commitments and contingencies",
     "shortName": "Commitments and contingencies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "53",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R54": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssets",
     "longName": "999044 - Disclosure - Transfers of financial assets",
     "shortName": "Transfers of financial assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "54",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R55": {
     "role": "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreements",
     "longName": "999045 - Disclosure - Offsetting, enforceable master netting arrangements, and similar agreements",
     "shortName": "Offsetting, enforceable master netting arrangements, and similar agreements",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "55",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R56": {
     "role": "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivested",
     "longName": "999046 - Disclosure - Companies and businesses acquired and divested",
     "shortName": "Companies and businesses acquired and divested",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "56",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfBusinessCombinationsAndDisposalGroupsExplanatoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfBusinessCombinationsAndDisposalGroupsExplanatoryTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R57": {
     "role": "http://www.aegon.com/role/GroupCompanies",
     "longName": "999047 - Disclosure - Group companies",
     "shortName": "Group companies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "57",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R58": {
     "role": "http://www.aegon.com/role/RelatedPartyTransactions",
     "longName": "999048 - Disclosure - Related party transactions",
     "shortName": "Related party transactions",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "58",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfRelatedPartyExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfRelatedPartyExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R59": {
     "role": "http://www.aegon.com/role/LoansToGroupCompanies",
     "longName": "999049 - Disclosure - Loans to group companies",
     "shortName": "Loans to group companies",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "59",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R60": {
     "role": "http://www.aegon.com/role/NonCurrentAssets",
     "longName": "999050 - Disclosure - Non-current assets",
     "shortName": "Non-current assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "60",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R61": {
     "role": "http://www.aegon.com/role/Receivables",
     "longName": "999051 - Disclosure - Receivables",
     "shortName": "Receivables",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "61",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R62": {
     "role": "http://www.aegon.com/role/OtherCurrentAssets",
     "longName": "999052 - Disclosure - Other current assets",
     "shortName": "Other current assets",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "62",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfOtherAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfOtherAssetsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R63": {
     "role": "http://www.aegon.com/role/ShareCapital",
     "longName": "999053 - Disclosure - Share capital",
     "shortName": "Share capital",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "63",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfShareCapitalTransactionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfShareCapitalTransactionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R64": {
     "role": "http://www.aegon.com/role/ShareholdersEquity",
     "longName": "999054 - Disclosure - Shareholders' equity",
     "shortName": "Shareholders' equity",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "64",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R65": {
     "role": "http://www.aegon.com/role/LongTermBorrowings",
     "longName": "999055 - Disclosure - Long-term borrowings",
     "shortName": "Long-term borrowings",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "65",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfLongTermBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfLongTermBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R66": {
     "role": "http://www.aegon.com/role/OtherNonCurrentLiabilities",
     "longName": "999056 - Disclosure - Other non-current liabilities",
     "shortName": "Other non-current liabilities",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "66",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R67": {
     "role": "http://www.aegon.com/role/NumberOfEmployees",
     "longName": "999057 - Disclosure - Number of employees",
     "shortName": "Number of employees",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "67",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInformationAboutNumberOfEmployeesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInformationAboutNumberOfEmployeesTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R68": {
     "role": "http://www.aegon.com/role/AuditorsRemuneration",
     "longName": "999058 - Disclosure - Auditor's remuneration",
     "shortName": "Auditor's remuneration",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "68",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfAuditorsRemunerationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DisclosureOfAuditorsRemunerationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R69": {
     "role": "http://www.aegon.com/role/EventsAfterTheReportingPeriod",
     "longName": "999059 - Disclosure - Events after the reporting period",
     "shortName": "Events after the reporting period",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "69",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R70": {
     "role": "http://www.aegon.com/role/ProposalForProfitAppropriation",
     "longName": "999060 - Disclosure - Proposal for profit appropriation",
     "shortName": "Proposal for profit appropriation",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "70",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R71": {
     "role": "http://www.aegon.com/role/SummaryOfInvestmentsOtherThanInvestmentsInRelatedParties",
     "longName": "999061 - Disclosure - Summary of investments other than investments in related parties",
     "shortName": "Summary of investments other than investments in related parties",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "71",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfFinancialInvestmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfFinancialInvestmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R72": {
     "role": "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrant",
     "longName": "999062 - Disclosure - Condensed financial information of registrant",
     "shortName": "Condensed financial information of registrant",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "72",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "srt:ScheduleOfCondensedBalanceSheetTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "srt:ScheduleOfCondensedBalanceSheetTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R73": {
     "role": "http://www.aegon.com/role/SupplementaryInsuranceInformation",
     "longName": "999063 - Disclosure - Supplementary insurance information",
     "shortName": "Supplementary insurance information",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "73",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R74": {
     "role": "http://www.aegon.com/role/Reinsurance",
     "longName": "999064 - Disclosure - Reinsurance",
     "shortName": "Reinsurance",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "74",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfPremiumsNetOfReinsuranceExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfPremiumsNetOfReinsuranceExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R75": {
     "role": "http://www.aegon.com/role/ValuationAndQualifyingAccounts",
     "longName": "999065 - Disclosure - Valuation and qualifying accounts",
     "shortName": "Valuation and qualifying accounts",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "",
     "menuCat": "Notes",
     "order": "75",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R76": {
     "role": "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies",
     "longName": "999066 - Disclosure - Material accounting policies information (Policies)",
     "shortName": "Material accounting policies information (Policies)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "policies",
     "menuCat": "Policies",
     "order": "76",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfMaterialAccountingPolicyInformationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfMaterialAccountingPolicyInformationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R77": {
     "role": "http://www.aegon.com/role/InvestmentIncomeTables",
     "longName": "999067 - Disclosure - Investment income (Tables)",
     "shortName": "Investment income (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "77",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInvestmentRevenueExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInvestmentIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInvestmentRevenueExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInvestmentIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R78": {
     "role": "http://www.aegon.com/role/FinancialRisksTables",
     "longName": "999068 - Disclosure - Financial risks (Tables)",
     "shortName": "Financial risks (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "78",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfMaximumExposureToCreditRiskExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfMaximumExposureToCreditRiskExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R79": {
     "role": "http://www.aegon.com/role/SegmentInformationTables",
     "longName": "999069 - Disclosure - Segment information (Tables)",
     "shortName": "Segment information (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "79",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfChangesInAccountingEstimatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfChangesInAccountingEstimatesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R80": {
     "role": "http://www.aegon.com/role/InsuranceRevenueTables",
     "longName": "999070 - Disclosure - Insurance revenue (Tables)",
     "shortName": "Insurance revenue (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "80",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutAnalysisOfInsuranceRevenueExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutAnalysisOfInsuranceRevenueExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R81": {
     "role": "http://www.aegon.com/role/InsuranceServiceExpenseTables",
     "longName": "999071 - Disclosure - Insurance service expense (Tables)",
     "shortName": "Insurance service expense (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "81",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutInsuranceServiceExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInsuranceServiceExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutInsuranceServiceExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInsuranceServiceExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R82": {
     "role": "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldTables",
     "longName": "999072 - Disclosure - Net income / (expenses) on reinsurance held (Tables)",
     "shortName": "Net income / (expenses) on reinsurance held (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "82",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfNetExpensesOnReinsuranceHeldExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfNetExpensesOnReinsuranceHeldExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R83": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultTables",
     "longName": "999073 - Disclosure - Insurance Net Investment Result (Tables)",
     "shortName": "Insurance Net Investment Result (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "83",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodExplantory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "ifrs-full:DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInsuranceContractsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R84": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultTables",
     "longName": "999074 - Disclosure - Other net investment result (Tables)",
     "shortName": "Other net investment result (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "84",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R85": {
     "role": "http://www.aegon.com/role/FinancingNetInvestmentResultTables",
     "longName": "999075 - Disclosure - Financing net investment result (Tables)",
     "shortName": "Financing net investment result (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "85",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R86": {
     "role": "http://www.aegon.com/role/FeesAndCommissionIncomeTables",
     "longName": "999076 - Disclosure - Fees and commission income (Tables)",
     "shortName": "Fees and commission income (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "86",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfSummaryOfCommissionsAndExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfFeeAndCommissionIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfSummaryOfCommissionsAndExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfFeeAndCommissionIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R87": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesTables",
     "longName": "999077 - Disclosure - Other operating expenses (Tables)",
     "shortName": "Other operating expenses (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "87",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationOfOtherOperatingExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationOfOtherOperatingExpenseExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R88": {
     "role": "http://www.aegon.com/role/CommissionsAndExpensesTables",
     "longName": "999078 - Disclosure - Commissions and expenses (Tables)",
     "shortName": "Commissions and expenses (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "88",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutCommissionsAndExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfCommissionsAndExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutCommissionsAndExpensesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfCommissionsAndExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R89": {
     "role": "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables",
     "longName": "999079 - Disclosure - Interest charges and related fees (Tables)",
     "shortName": "Interest charges and related fees (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "89",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInterestChargesAndRelatedFeesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInterestExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfInterestChargesAndRelatedFeesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInterestExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R90": {
     "role": "http://www.aegon.com/role/OtherIncomeChargesTables",
     "longName": "999080 - Disclosure - Other income / (charges) (Tables)",
     "shortName": "Other income / (charges) (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "90",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutOtherOperatingIncomeAndOtherChargesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutOtherOperatingIncomeAndOtherChargesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R91": {
     "role": "http://www.aegon.com/role/IncomeTaxTables",
     "longName": "999081 - Disclosure - Income tax (Tables)",
     "shortName": "Income tax (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "91",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfComponentsOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfComponentsOfIncomeTaxExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R92": {
     "role": "http://www.aegon.com/role/SharesInGroupCompaniesTables",
     "longName": "999082 - Disclosure - Shares in group companies (Tables)",
     "shortName": "Shares in group companies (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "92",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutInterestsInOtherEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutInterestsInOtherEntitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R93": {
     "role": "http://www.aegon.com/role/NonCurrentAssetsTables",
     "longName": "999083 - Disclosure - Non-current assets (Tables)",
     "shortName": "Non-current assets (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "93",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfNonCurrentAssets",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfNonCurrentAssets",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R94": {
     "role": "http://www.aegon.com/role/EarningsPerShareTables",
     "longName": "999084 - Disclosure - Earnings per share (Tables)",
     "shortName": "Earnings per share (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "94",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:EarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:EarningsPerShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R95": {
     "role": "http://www.aegon.com/role/DividendPerCommonShareTables",
     "longName": "999085 - Disclosure - Dividend per common share (Tables)",
     "shortName": "Dividend per common share (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "95",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDividendPerCommonShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfDividendsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDividendPerCommonShareExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfDividendsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R96": {
     "role": "http://www.aegon.com/role/CashAndCashEquivalentsTables",
     "longName": "999086 - Disclosure - Cash and cash equivalents (Tables)",
     "shortName": "Cash and cash equivalents (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "96",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R97": {
     "role": "http://www.aegon.com/role/InvestmentsTables",
     "longName": "999087 - Disclosure - Investments (Tables)",
     "shortName": "Investments (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "97",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsInFinancialAssetsAndRealEstateExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInvestmentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsInFinancialAssetsAndRealEstateExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInvestmentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R98": {
     "role": "http://www.aegon.com/role/DerivativesTables",
     "longName": "999088 - Disclosure - Derivatives (Tables)",
     "shortName": "Derivatives (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "98",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DerivativeFinancialInstrumentsAndHedgingActivitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DerivativeFinancialInstrumentsAndHedgingActivitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R99": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesTables",
     "longName": "999089 - Disclosure - Investments in joint ventures and associates (Tables)",
     "shortName": "Investments in joint ventures and associates (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "99",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureDetailOfInvestmentsInAssociatesSubsidariesAndJointVenture",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInvestmentsInJointVenturesAndAssociates",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureDetailOfInvestmentsInAssociatesSubsidariesAndJointVenture",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfInvestmentsInJointVenturesAndAssociates",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R100": {
     "role": "http://www.aegon.com/role/DeferredExpensesTables",
     "longName": "999090 - Disclosure - Deferred expenses (Tables)",
     "shortName": "Deferred expenses (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "100",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDeferredCostsArisingFromInsuranceContractsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfDeferredExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDeferredCostsArisingFromInsuranceContractsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfDeferredExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R101": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesTables",
     "longName": "999091 - Disclosure - Other assets and receivables (Tables)",
     "shortName": "Other assets and receivables (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "101",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R102": {
     "role": "http://www.aegon.com/role/IntangibleAssetsTables",
     "longName": "999092 - Disclosure - Intangible assets (Tables)",
     "shortName": "Intangible assets (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "102",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R103": {
     "role": "http://www.aegon.com/role/ShareholdersEquityTables",
     "longName": "999093 - Disclosure - Shareholders' equity (Tables)",
     "shortName": "Shareholders' equity (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "103",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R104": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsTables",
     "longName": "999094 - Disclosure - Other equity instruments (Tables)",
     "shortName": "Other equity instruments (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "104",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R105": {
     "role": "http://www.aegon.com/role/SubordinatedBorrowingsTables",
     "longName": "999095 - Disclosure - Subordinated borrowings (Tables)",
     "shortName": "Subordinated borrowings (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "105",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R106": {
     "role": "http://www.aegon.com/role/TrustPassThroughSecuritiesTables",
     "longName": "999096 - Disclosure - Trust pass-through securities (Tables)",
     "shortName": "Trust pass-through securities (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "106",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutTrustPassthroughSecuritiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutTrustPassthroughSecuritiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R107": {
     "role": "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesTables",
     "longName": "999097 - Disclosure - Investment contracts without discretionary participation features (Tables)",
     "shortName": "Investment contracts without discretionary participation features (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "107",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentContractsWithoutDiscretionaryParticipationFeaturesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInvestmentContractsLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentContractsWithoutDiscretionaryParticipationFeaturesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfInvestmentContractsLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R108": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
     "longName": "999098 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features (Tables)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "108",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureInTabularFormOfMovementInContractualServiceMargin",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureInTabularFormOfMovementInContractualServiceMargin",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R109": {
     "role": "http://www.aegon.com/role/BorrowingsTables",
     "longName": "999099 - Disclosure - Borrowings (Tables)",
     "shortName": "Borrowings (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "109",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R110": {
     "role": "http://www.aegon.com/role/ProvisionsTables",
     "longName": "999100 - Disclosure - Provisions (Tables)",
     "shortName": "Provisions (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "110",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R111": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansTables",
     "longName": "999101 - Disclosure - Defined benefit plans (Tables)",
     "shortName": "Defined benefit plans (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "111",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R112": {
     "role": "http://www.aegon.com/role/DeferredTaxTables",
     "longName": "999102 - Disclosure - Deferred tax (Tables)",
     "shortName": "Deferred tax (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "112",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R113": {
     "role": "http://www.aegon.com/role/OtherLiabilitiesTables",
     "longName": "999103 - Disclosure - Other liabilities (Tables)",
     "shortName": "Other liabilities (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "113",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R114": {
     "role": "http://www.aegon.com/role/AccrualsTables",
     "longName": "999104 - Disclosure - Accruals (Tables)",
     "shortName": "Accruals (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "114",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfAccruedLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfAccruedLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R115": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvencyTables",
     "longName": "999105 - Disclosure - Capital management and solvency (Tables)",
     "shortName": "Capital management and solvency (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "115",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTableTextBlock",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R116": {
     "role": "http://www.aegon.com/role/FairValueTables",
     "longName": "999106 - Disclosure - Fair value (Tables)",
     "shortName": "Fair value (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "116",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R117": {
     "role": "http://www.aegon.com/role/CommitmentsAndContingenciesTables",
     "longName": "999107 - Disclosure - Commitments and contingencies (Tables)",
     "shortName": "Commitments and contingencies (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "117",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedPurchaseAndSaleTransactionsOfInvestmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailedPurchaseAndSaleTransactionsOfInvestmentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R118": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssetsTables",
     "longName": "999108 - Disclosure - Transfers of financial assets (Tables)",
     "shortName": "Transfers of financial assets (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "118",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R119": {
     "role": "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsTables",
     "longName": "999109 - Disclosure - Offsetting, enforceable master netting arrangements, and similar agreements (Tables)",
     "shortName": "Offsetting, enforceable master netting arrangements, and similar agreements (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "119",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R120": {
     "role": "http://www.aegon.com/role/GroupCompaniesTables",
     "longName": "999110 - Disclosure - Group companies (Tables)",
     "shortName": "Group companies (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "120",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsInSubsidiariesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfInvestmentsInSubsidiariesExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R121": {
     "role": "http://www.aegon.com/role/RelatedPartyTransactionsTables",
     "longName": "999111 - Disclosure - Related party transactions (Tables)",
     "shortName": "Related party transactions (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "121",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:RelatedPartyTransactionsComponentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfRelatedPartyExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:RelatedPartyTransactionsComponentsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "ifrs-full:DisclosureOfRelatedPartyExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R122": {
     "role": "http://www.aegon.com/role/LoansToGroupCompaniesTables",
     "longName": "999112 - Disclosure - Loans to group companies (Tables)",
     "shortName": "Loans to group companies (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "122",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutLoansToSubsidiariesJointVenturesAndAssociatesExpplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutLoansToSubsidiariesJointVenturesAndAssociatesExpplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R123": {
     "role": "http://www.aegon.com/role/LongTermBorrowingsTables",
     "longName": "999113 - Disclosure - Long-term borrowings (Tables)",
     "shortName": "Long-term borrowings (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "123",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutLongTermBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfLongTermBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfDetailedInformationAboutLongTermBorrowingsExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "aeg:DisclosureOfLongTermBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R124": {
     "role": "http://www.aegon.com/role/AuditorsRemunerationTables",
     "longName": "999114 - Disclosure - Auditor's remuneration (Tables)",
     "shortName": "Auditor's remuneration (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "124",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfAccountantsRemunerationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfAuditorsRemunerationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DisclosureOfAccountantsRemunerationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfAuditorsRemunerationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R125": {
     "role": "http://www.aegon.com/role/ProposalForProfitAppropriationTables",
     "longName": "999115 - Disclosure - Proposal for profit appropriation (Tables)",
     "shortName": "Proposal for profit appropriation (Tables)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "tables",
     "menuCat": "Tables",
     "order": "125",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailInformationAboutProposalProfitAppropriationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisclosureOfDetailInformationAboutProposalProfitAppropriationExplanatory",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R126": {
     "role": "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
     "longName": "999116 - Disclosure - General Information - Additional Information (Detail)",
     "shortName": "General Information - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "126",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:CountryOfIncorporation",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:CountryOfIncorporation",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R127": {
     "role": "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
     "longName": "999117 - Disclosure - Material accounting policies information - Additional Information (Detail)",
     "shortName": "Material accounting policies information - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "127",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PercentageOfVotingPowerForSignificantInfluence",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociates",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PercentageOfVotingPowerForSignificantInfluence",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociates",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R128": {
     "role": "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail",
     "longName": "999118 - Disclosure - Investment Income - Summary of Investment Income (Detail)",
     "shortName": "Investment Income - Summary of Investment Income (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "128",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:InterestIncomeFromShortTermInvestments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInvestmentRevenueExplanatory",
       "aeg:DisclosureOfInvestmentIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:InterestIncomeFromShortTermInvestments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInvestmentRevenueExplanatory",
       "aeg:DisclosureOfInvestmentIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R129": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
     "longName": "999119 - Disclosure - Financial Risks - Schedule of Maximum Exposure to Credit Risk (Detail)",
     "shortName": "Financial Risks - Schedule of Maximum Exposure to Credit Risk (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "129",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis",
      "name": "ifrs-full:MaximumExposureToCreditRisk",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfMaximumExposureToCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis",
      "name": "ifrs-full:CashOnHand",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfMaximumExposureToCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R130": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
     "longName": "999120 - Disclosure - Financial Risks - Summary of Credit Risk Exposure - Debt Securities (Detail)",
     "shortName": "Financial Risks - Summary of Credit Risk Exposure - Debt Securities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "130",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_DebtSecuritiesMemberifrsfullClassesOfFinancialAssetsAxis_GrossCarryingAmountMemberifrsfullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
      "name": "ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DebtSecuritiesMemberifrsfullClassesOfFinancialAssetsAxis_GrossCarryingAmountMemberifrsfullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
      "name": "ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R131": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
     "longName": "999121 - Disclosure - Financial Risks - Summary of Credit Risk Exposure - Mortgages (Detail)",
     "shortName": "Financial Risks - Summary of Credit Risk Exposure - Mortgages (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "131",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_MortgagesMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExposureExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R132": {
     "role": "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
     "longName": "999122 - Disclosure - Financial Risks - Additional Information (Detail)",
     "shortName": "Financial Risks - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "132",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:AllowanceForCreditLossesOnFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfMovementsInProvisionForAllowancesForDoubtfulDebtsExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:UndiscountedExpectedCreditLossesAtInitialRecognitionOnPurchasedOrOriginatedCreditimpairedFinancialAssetsInitiallyRecognised",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R133": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail",
     "longName": "999123 - Disclosure - Financial Risks - Summary of Changes in Fair Value have been Recognized for these Investments (Detail)",
     "shortName": "Financial Risks - Summary of Changes in Fair Value have been Recognized for these Investments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "133",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ChangesInFairValueOfFinancialAssetsAttributableToChangesInCreditRiskOfFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ChangesInFairValueOfFinancialAssetsAttributableToChangesInCreditRiskOfFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R134": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
     "longName": "999124 - Disclosure - Financial Risks - Summary of Group Limits Per Credit Rating (Detail)",
     "shortName": "Financial Risks - Summary of Group Limits Per Credit Rating (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "134",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis",
      "name": "aeg:NetCreditExposure",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCreditExposuresExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis",
      "name": "aeg:NetCreditExposure",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCreditExposuresExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R135": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
     "longName": "999125 - Disclosure - Financial Risks - Schedule of Ratings Distribution of General Account Portfolios (Detail)",
     "shortName": "Financial Risks - Schedule of Ratings Distribution of General Account Portfolios (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "135",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:FinancialAssetsAtAmortisedCostNet",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis",
      "name": "aeg:FinancialAssetsAtAmortisedCostNet",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R136": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
     "longName": "999126 - Disclosure - Financial Risks - Summary of Credit Quality of Gross Positions of Reinsurance Assets (Detail)",
     "shortName": "Financial Risks - Summary of Credit Quality of Gross Positions of Reinsurance Assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "136",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_GrossCarryingAmountMemberifrsfullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
      "name": "aeg:ReinsuranceContractsHeldAssetsGross",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCreditQualityOfGrossPositionsReinsuranceAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_GrossCarryingAmountMemberifrsfullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
      "name": "aeg:ReinsuranceContractsHeldAssetsGross",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCreditQualityOfGrossPositionsReinsuranceAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R137": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
     "longName": "999127 - Disclosure - Financial Risks - Schedule of Credit Risk Concentration - Debt Securities and Money Market Investments (Detail)",
     "shortName": "Financial Risks - Schedule of Credit Risk Concentration - Debt Securities and Money Market Investments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "137",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis_DebtSecuritiesAndMoneyMarketInvestmentsMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "aeg:CreditRiskConcentrations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis_DebtSecuritiesAndMoneyMarketInvestmentsMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "aeg:CreditRiskConcentrations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R138": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
     "longName": "999128 - Disclosure - Financial Risks - Schedule of Credit Risk Concentration - Government Bonds (Detail)",
     "shortName": "Financial Risks - Schedule of Credit Risk Concentration - Government Bonds (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "138",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis_GovernmentBondsPerCountryOfRiskMemberifrsfullClassesOfFinancialAssetsAxis_UnitedStatesGovernmentBondsMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "aeg:CreditRiskConcentrations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis_GovernmentBondsPerCountryOfRiskMemberifrsfullClassesOfFinancialAssetsAxis_UnitedStatesGovernmentBondsMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "aeg:CreditRiskConcentrations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R139": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
     "longName": "999129 - Disclosure - Financial Risks - Schedule of Credit Risk Concentration - Credit Rating (Detail)",
     "shortName": "Financial Risks - Schedule of Credit Risk Concentration - Credit Rating (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "139",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis_GovernmentBondMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "aeg:CreditRiskConcentrationsCreditRating",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis_GovernmentBondMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "aeg:CreditRiskConcentrationsCreditRating",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R140": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
     "longName": "999130 - Disclosure - Financial Risks - Schedule of Credit Risk Concentration - Mortgage Loans (Detail)",
     "shortName": "Financial Risks - Schedule of Credit Risk Concentration - Mortgage Loans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "140",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis_MortgageLoansMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "aeg:CreditRiskConcentrations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CreditRiskMemberifrsfullTypesOfRisksAxis_MortgageLoansMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "aeg:CreditRiskConcentrations",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R141": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail",
     "longName": "999131 - Disclosure - Financial Risks - Summary of Income Received From Investments in RMBSs, SMBSs and ABSs (Detail)",
     "shortName": "Financial Risks - Summary of Income Received From Investments in RMBSs, SMBSs and ABSs (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "141",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestIncomeOnUnconsolidatedStructuredEntities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailsIncomeReceivedFromInterestsAndInvestmentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestIncomeOnUnconsolidatedStructuredEntities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailsIncomeReceivedFromInterestsAndInvestmentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R142": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
     "longName": "999132 - Disclosure - Financial Risks - Summary of information about probability default rate explanatory (Detail)",
     "shortName": "Financial Risks - Summary of information about probability default rate explanatory (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "142",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis_AmericasMemberifrsfullGeographicalAreasAxis_TopOfRangeMemberifrsfullRangeAxis",
      "name": "aeg:ProbabilityDefaultRating",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AAACreditGradesMemberifrsfullExternalCreditGradesAxis_AmericasMemberifrsfullGeographicalAreasAxis_TopOfRangeMemberifrsfullRangeAxis",
      "name": "aeg:ProbabilityDefaultRating",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R143": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
     "longName": "999133 - Disclosure - Financial Risks - Summary of Economic Variable Assumptions (Detail)",
     "shortName": "Financial Risks - Summary of Economic Variable Assumptions (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "143",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_BaseScenarioMembersrtStatementScenarioAxis_LaterThanOneYearMemberifrsfullMaturityAxis",
      "name": "aeg:VariableInterestRates",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_BaseScenarioMembersrtStatementScenarioAxis_LaterThanOneYearMemberifrsfullMaturityAxis",
      "name": "aeg:DomesticGdpIndexPrice",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R144": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail",
     "longName": "999134 - Disclosure - Financial Risks - Summary of Weighted Assigned to Each Economic Scenario (Detail)",
     "shortName": "Financial Risks - Summary of Weighted Assigned to Each Economic Scenario (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "144",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_BaseScenarioMembersrtStatementScenarioAxis",
      "name": "aeg:PercentageOfEconomicVariableAssumptions",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_BaseScenarioMembersrtStatementScenarioAxis",
      "name": "aeg:PercentageOfEconomicVariableAssumptions",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R145": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail",
     "longName": "999135 - Disclosure - Financial Risks - Summary of Reconciliation of Changes in Loss Allowance - Mortgage Loans (Detail)",
     "shortName": "Financial Risks - Summary of Reconciliation of Changes in Loss Allowance - Mortgage Loans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "145",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "aeg:AllowanceForCreditLossesOnFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfMovementsInProvisionForAllowancesForDoubtfulDebtsExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_MortgagesMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationOfChangesInLossAllowanceExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R146": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
     "longName": "999136 - Disclosure - Financial Risks - Summary of Reconciliation of the Loss Allowance Movements with an Impact on the Income Statement with the Net Impairment Charge (Detail)",
     "shortName": "Financial Risks - Summary of Reconciliation of the Loss Allowance Movements with an Impact on the Income Statement with the Net Impairment Charge (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "146",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ImpairmentLossRecognisedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationBetweenTheIncomeStatementsNetImpairmentChargeAndTheFluctuationsInTheLossAllowanceThatHaveAnEffectOnItExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_OtherMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "ifrs-full:ImpairmentLossRecognisedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationBetweenTheIncomeStatementsNetImpairmentChargeAndTheFluctuationsInTheLossAllowanceThatHaveAnEffectOnItExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R147": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
     "longName": "999137 - Disclosure - Financial Risks - Summary of Changes in the Gross Carrying Amount / Market Value of the Financial Assets - Mortgage Loans (Detail)",
     "shortName": "Financial Risks - Summary of Changes in the Gross Carrying Amount / Market Value of the Financial Assets - Mortgage Loans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "147",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_MortgagesMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R148": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
     "longName": "999138 - Disclosure - Financial Risks - Summary of Changes in the Gross Carrying Amount / Market Value of the Financial Assets - Private Loans (Detail)",
     "shortName": "Financial Risks - Summary of Changes in the Gross Carrying Amount / Market Value of the Financial Assets - Private Loans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "148",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_DebtSecuritiesMemberifrsfullClassesOfAssetsAxis_GrossCarryingAmountMemberifrsfullCarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R149": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
     "longName": "999139 - Disclosure - Financial Risks - Summary of Equity Real Estate and Other Non-fixed-income Portfolio (Detail)",
     "shortName": "Financial Risks - Summary of Equity Real Estate and Other Non-fixed-income Portfolio (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "149",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_AmericasMemberifrsfullGeographicalAreasAxis",
      "name": "aeg:EquityRealEstateAndNonfixedIncomeExposure",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:SummaryOfEquityRealEstateAndOtherNonfixedincomePortfolio",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AmericasMemberifrsfullGeographicalAreasAxis",
      "name": "aeg:EquityRealEstateAndNonfixedIncomeExposure",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:SummaryOfEquityRealEstateAndOtherNonfixedincomePortfolio",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R150": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
     "longName": "999140 - Disclosure - Financial Risks - Summary of Market Risk Concentrations in Shares (Detail)",
     "shortName": "Financial Risks - Summary of Market Risk Concentrations in Shares (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "150",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ConcentrationsOfRiskMemberifrsfullFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskAxis",
      "name": "aeg:MarketRiskConcentrationsInShares",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfMarketRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ConcentrationsOfRiskMemberifrsfullFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskAxis",
      "name": "aeg:MarketRiskConcentrationsInShares",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfMarketRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R151": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail",
     "longName": "999141 - Disclosure - Financial Risks - Summary of Closing Levels of Certain Major Indices (Detail)",
     "shortName": "Financial Risks - Summary of Closing Levels of Certain Major Indices (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "151",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_StandardAndPoorFiveHundredMemberifrsfullMarketsOfCustomersAxis",
      "name": "aeg:ClosingLevelsOfMajorIndices",
      "unitRef": "Unit_Counterparty",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfClosingLevelOfMajorIndicesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_StandardAndPoorFiveHundredMemberifrsfullMarketsOfCustomersAxis",
      "name": "aeg:ClosingLevelsOfMajorIndices",
      "unitRef": "Unit_Counterparty",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfClosingLevelOfMajorIndicesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R152": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail",
     "longName": "999142 - Disclosure - Financial Risks - Summary of Sensitivity Analysis of Contractual Service Margin, Net Income and Shareholders' Equity to Equity Markets (Detail)",
     "shortName": "Financial Risks - Summary of Sensitivity Analysis of Contractual Service Margin, Net Income and Shareholders' Equity to Equity Markets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "152",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_EquityPricesTenPercentageHigherMemberifrsfullTypesOfRisksAxis_FinancialInstrumentsMemberifrsfullClassesOfAssetsAxis",
      "name": "aeg:EstimatedApproximateEffectsOnNetIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummaryOfSensitivityAnalysisExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_EquityPricesTenPercentageHigherMemberifrsfullTypesOfRisksAxis_FinancialInstrumentsMemberifrsfullClassesOfAssetsAxis",
      "name": "aeg:EstimatedApproximateEffectsOnNetIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummaryOfSensitivityAnalysisExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R153": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail",
     "longName": "999143 - Disclosure - Financial Risks - Schedule of Interest Rate (Detail)",
     "shortName": "Financial Risks - Schedule of Interest Rate (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "153",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ThreeMonthTermSofrMemberifrsfullHedgingInstrumentsAxis",
      "name": "aeg:InterestRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInterestRateExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ThreeMonthTermSofrMemberifrsfullHedgingInstrumentsAxis",
      "name": "aeg:InterestRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInterestRateExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R154": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
     "longName": "999144 - Disclosure - Financial Risks - Schedule of Parallel Movement of Yield Curve (Detail)",
     "shortName": "Financial Risks - Schedule of Parallel Movement of Yield Curve (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "154",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncreaseOfMarketInterestRatesHundredBasisPointsEffectOnYieldCurveMemberAEGYieldCurveAxis_InsuranceAndReinsuranceLiabilitiesMemberifrsfullClassesOfLiabilitiesAxis",
      "name": "aeg:EstimatedApproximateEffectsOnContractualServiceMargin",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfSensitivityAnalysisAsAResultOfParallelShiftInYieldCurvesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncreaseOfMarketInterestRatesHundredBasisPointsEffectOnYieldCurveMemberAEGYieldCurveAxis_InsuranceAndReinsuranceLiabilitiesMemberifrsfullClassesOfLiabilitiesAxis",
      "name": "aeg:EstimatedApproximateEffectsOnContractualServiceMargin",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfSensitivityAnalysisAsAResultOfParallelShiftInYieldCurvesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R155": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
     "longName": "999145 - Disclosure - Financial Risks - Summary of Information on Historical Net Result and Shareholders' Equity (Detail)",
     "shortName": "Financial Risks - Summary of Information on Historical Net Result and Shareholders' Equity (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "155",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AmericasMemberifrsfullGeographicalAreasAxis",
      "name": "aeg:ShareholdersEquityInNetProfitAndLoss",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutHistoricalNetIncomeAndStockholdersEquityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AmericasMemberifrsfullGeographicalAreasAxis",
      "name": "aeg:ShareholdersEquityInNetProfitAndLoss",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutHistoricalNetIncomeAndStockholdersEquityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R156": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
     "longName": "999146 - Disclosure - Financial Risks - Summary of Quantitative Information about Financial Exposure to Currency Risk (Detail)",
     "shortName": "Financial Risks - Summary of Quantitative Information about Financial Exposure to Currency Risk (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "156",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_CurrencyRiskMemberifrsfullTypesOfRisksAxis_FinancialInstrumentsAssetsMemberifrsfullClassesOfAssetsAxis",
      "name": "aeg:MaximumExposureToCurrencyRisk",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfQuantitativeInformationAboutFinancialInstrumentsExposureToCurrencyRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CurrencyRiskMemberifrsfullTypesOfRisksAxis_FinancialInstrumentsAssetsMemberifrsfullClassesOfAssetsAxis",
      "name": "aeg:MaximumExposureToCurrencyRisk",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfQuantitativeInformationAboutFinancialInstrumentsExposureToCurrencyRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R157": {
     "role": "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail",
     "longName": "999147 - Disclosure - Financial Risks - Schedule of Sensitivity Analysis of Net Income and Shareholders' Equity (Detail)",
     "shortName": "Financial Risks - Schedule of Sensitivity Analysis of Net Income and Shareholders' Equity (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "157",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncreaseByFifteenPercentageOfUSDCurrenciesRelativeToEuroMemberifrsfullTypesOfInterestRatesAxis",
      "name": "aeg:EffectsOfExchangeRatesOnNetIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:ScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncreaseByFifteenPercentageOfUSDCurrenciesRelativeToEuroMemberifrsfullTypesOfInterestRatesAxis",
      "name": "aeg:EffectsOfExchangeRatesOnNetIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:ScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R158": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
     "longName": "999148 - Disclosure - Financial Risks - Summary of Maturity Analysis - Insurance and Reinsurance Contracts (Detail)",
     "shortName": "Financial Risks - Summary of Maturity Analysis - Insurance and Reinsurance Contracts (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "158",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:RemainingContractualUndiscountedCashOutflowsInflowsThatAriseFromContractsWithinScopeOfIFRS17ThatAreLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Explanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:RemainingContractualUndiscountedCashOutflowsInflowsThatAriseFromContractsWithinScopeOfIFRS17ThatAreLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Explanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R159": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
     "longName": "999149 - Disclosure - Financial Risks - Summary of Maturity Analysis - Insurance and Reinsurance Contracts - Expected Release of Risk Adjustment (Detail)",
     "shortName": "Financial Risks - Summary of Maturity Analysis - Insurance and Reinsurance Contracts - Expected Release of Risk Adjustment (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "159",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:InsuranceContractsLiabilitiesWithSignificantExpectedReleaseOfRiskAdjustments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:SummaryOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:InsuranceContractsLiabilitiesWithSignificantExpectedReleaseOfRiskAdjustments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:SummaryOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R160": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
     "longName": "999150 - Disclosure - Financial Risks - Summary of Maturity Analysis Gross Undiscounted Contractual Cash Flows (Detail)",
     "shortName": "Financial Risks - Summary of Maturity Analysis Gross Undiscounted Contractual Cash Flows (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "160",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:TrustPassThroughSecurities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ContractualMaturitiesMemberifrsfullCategoriesOfFinancialLiabilitiesAxis",
      "name": "aeg:TrustPassThroughSecurities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfManagingLiquidityRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R161": {
     "role": "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
     "longName": "999151 - Disclosure - Financial Risks - Summary of Maturity Analysis for Derivative Financial Instruments (Detail)",
     "shortName": "Financial Risks - Summary of Maturity Analysis for Derivative Financial Instruments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "161",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:DerivativeFinancialLiabilitiesUndiscountedCashInflowsGross",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfManagingLiquidityRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:DerivativeFinancialLiabilitiesUndiscountedCashInflowsGross",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfManagingLiquidityRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R162": {
     "role": "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails",
     "longName": "999152 - Disclosure - Financial Risks - Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts (Details)",
     "shortName": "Financial Risks - Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts (Details)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "162",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:AmountsPayableOnDemandThatAriseFromContractsWithinScopeOfIFRS17",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:AmountsPayableOnDemandThatAriseFromContractsWithinScopeOfIFRS17",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsExplanatoryTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R163": {
     "role": "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
     "longName": "999153 - Disclosure - Segment Information - Additional Information (Detail)",
     "shortName": "Segment Information - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "163",
     "firstAnchor": {
      "contextRef": "P07_04_2023To07_04_2023_AsrMemberifrsfullSignificantInvestmentsInAssociatesAxis",
      "name": "ifrs-full:ProportionOfOwnershipInterestInAssociate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P07_04_2023To07_04_2023_AsrMemberifrsfullSignificantInvestmentsInAssociatesAxis",
      "name": "ifrs-full:ProportionOfOwnershipInterestInAssociate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R164": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
     "longName": "999154 - Disclosure - Segment Information - Summary of Segment Results (Detail)",
     "shortName": "Segment Information - Summary of Segment Results (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "164",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:OperatingResult",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfChangesInAccountingEstimatesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:OperatingResult",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfChangesInAccountingEstimatesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R165": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail",
     "longName": "999155 - Disclosure - Segment Information - Summary of Segment Results (Parenthetical) (Detail)",
     "shortName": "Segment Information - Summary of Segment Results (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "165",
     "firstAnchor": {
      "contextRef": "P01_01_2023To12_31_2023_NLifrsfullGeographicalAreasAxis",
      "name": "aeg:IntersegmentRevenue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R166": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
     "longName": "999156 - Disclosure - Segment Information - Summary of Reconciliation from Operating Result Before Tax to Income Before Tax (Detail)",
     "shortName": "Segment Information - Summary of Reconciliation from Operating Result Before Tax to Income Before Tax (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "166",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InsuranceRevenue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ReportableSegmentsMemberAEGSegmentAxis",
      "name": "aeg:OperatingResultBeforeTaxFromContinuingOperationsExcludingJvsAssociate",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R167": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail",
     "longName": "999157 - Disclosure - Segment Information - Summary of Reconciliation from Operating Result Before Tax to Income Before Tax (Parenthetical) (Detail)",
     "shortName": "Segment Information - Summary of Reconciliation from Operating Result Before Tax to Income Before Tax (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "167",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ExperienceAdjustmentsThatRelateToCurrentServiceIncludedInOtherIncomeCharges",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ExperienceAdjustmentsThatRelateToCurrentServiceIncludedInOtherIncomeCharges",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R168": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
     "longName": "999158 - Disclosure - Segment Information - Summary of Other Selected Income Statement Items (Detail)",
     "shortName": "Segment Information - Summary of Other Selected Income Statement Items (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "168",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:AmortizationOfDeferredExpensesAndFutureServicingRights",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherSelectedIncomeStatementItemsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:AmortizationOfDeferredExpensesAndFutureServicingRights",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherSelectedIncomeStatementItemsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R169": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
     "longName": "999159 - Disclosure - Segment Information - Summary of Number of Employees (Detail)",
     "shortName": "Segment Information - Summary of Number of Employees (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "169",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:NumberOfEmployees",
      "unitRef": "Unit_Employees",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfNumberOfEmployeesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AmericasMemberifrsfullGeographicalAreasAxis",
      "name": "ifrs-full:NumberOfEmployees",
      "unitRef": "Unit_Employees",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfNumberOfEmployeesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R170": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
     "longName": "999160 - Disclosure - Segment Information - Summary of Assets and Liabilities Per Segment (Detail)",
     "shortName": "Segment Information - Summary of Assets and Liabilities Per Segment (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "170",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:InvestmentsForGeneralAccount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R171": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
     "longName": "999161 - Disclosure - Segment Information - Summary of Investments (Detail)",
     "shortName": "Segment Information - Summary of Investments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "171",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:Investments1",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummarizedInvestmentPerSegmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:Investments1",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummarizedInvestmentPerSegmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R172": {
     "role": "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
     "longName": "999162 - Disclosure - Segment Information - Summary of Detailed Information About Insurance, Reinsurance and Investment Contracts (Detail)",
     "shortName": "Segment Information - Summary of Detailed Information About Insurance, Reinsurance and Investment Contracts (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "172",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:InsuranceContractsLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:InsuranceContractsAndInvestmentContractsWithoutParticipationFeatures",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R173": {
     "role": "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
     "longName": "999163 - Disclosure - Insurance Revenue - Summary of Amounts Related to Changes in Liability for Remaining Coverage (Detail)",
     "shortName": "Insurance Revenue - Summary of Amounts Related to Changes in Liability for Remaining Coverage (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "173",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InsuranceRevenue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis_InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMemberifrsfullInsuranceContractsAxis",
      "name": "ifrs-full:InsuranceRevenueInsuranceServiceExpensesIncurredDuringPeriodMeasuredAtAmountsExpectedAtBeginningOfPeriod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutAnalysisOfInsuranceRevenueExplanatory",
       "ifrs-full:DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R174": {
     "role": "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
     "longName": "999164 - Disclosure - Insurance Revenue - Summary of Revenue Recognized on Insurance and Investments Contracts (Detail)",
     "shortName": "Insurance Revenue - Summary of Revenue Recognized on Insurance and Investments Contracts (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "174",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InsuranceRevenue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InvestmentContractsWithDiscretionaryParticipatingFeaturesMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "ifrs-full:InsuranceRevenue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17ExplanatoryTextBlock",
       "ifrs-full:DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R175": {
     "role": "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
     "longName": "999165 - Disclosure - Insurance service expenses - Summary of Insurance Service Expenses (Detail)",
     "shortName": "Insurance service expenses - Summary of Insurance Service Expenses (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "175",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InsuranceServiceExpensesFromInsuranceContractsIssued",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis_InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMemberifrsfullInsuranceContractsAxis",
      "name": "aeg:IncurredClaimsAndExpenses",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutInsuranceServiceExpensesExplanatory",
       "aeg:DisclosureOfInsuranceServiceExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R176": {
     "role": "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
     "longName": "999166 - Disclosure - Net income / (expenses) on reinsurance held - Summary of net income / (expenses) on reinsurance held (Detail)",
     "shortName": "Net income / (expenses) on reinsurance held - Summary of net income / (expenses) on reinsurance held (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "176",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:IncomeExpensesFromReinsuranceContractsHeldOtherThanFinanceIncomeExpenses",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "ifrs-full:IncomeExpensesFromReinsuranceContractsHeldOtherThanFinanceIncomeExpenses",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldExplanatory",
       "aeg:DisclosureOfNetExpensesOnReinsuranceHeldExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R177": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
     "longName": "999167 - Disclosure - Insurance Net Investment Result - Summary of Insurance Net Investment Result (Detail)",
     "shortName": "Insurance Net Investment Result - Summary of Insurance Net Investment Result (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "177",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:InterestRevenueCalculatedUsingEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfChangesInAccountingEstimatesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InsuranceFinanceIncomeExpensesFromInsuranceAndInvestmentContractsIssuedRecognizedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesExplanatory",
       "ifrs-full:DisclosureOfInsuranceContractsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R178": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
     "longName": "999168 - Disclosure - Insurance Net Investment Result - Summary of Interest Revenue on Financial Instruments Calculated Using the Effective Interest Method (Detail)",
     "shortName": "Insurance Net Investment Result - Summary of Interest Revenue on Financial Instruments Calculated Using the Effective Interest Method (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "178",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsCalculatedUsingEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodExplantory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsCalculatedUsingEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodExplantory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R179": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
     "longName": "999169 - Disclosure - Insurance Net Investment Result - Summary of Interest Income From Instruments Measured at Fair Value Through Profit or Loss (Detail)",
     "shortName": "Insurance Net Investment Result - Summary of Interest Income From Instruments Measured at Fair Value Through Profit or Loss (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "179",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossExplanatory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R180": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
     "longName": "999170 - Disclosure - Insurance Net Investment Result - Summary of Other Investment Income Explanatory (Detail)",
     "shortName": "Insurance Net Investment Result - Summary of Other Investment Income Explanatory (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "180",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:OtherInvestmentIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "aeg:OtherInvestmentIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherInvestmentIncomeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R181": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
     "longName": "999171 - Disclosure - Insurance Net Investment Result - Summary of Financial Transactions Results (Detail)",
     "shortName": "Insurance Net Investment Result - Summary of Financial Transactions Results (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "181",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutFinanceIncomeExpenseExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R182": {
     "role": "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
     "longName": "999172 - Disclosure - Insurance Net Investment Result - Summary of Impairment (Losses) / Reversals (Detail)",
     "shortName": "Insurance Net Investment Result - Summary of Impairment (Losses) / Reversals (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "182",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ImpairmentLossRecognisedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationBetweenTheIncomeStatementsNetImpairmentChargeAndTheFluctuationsInTheLossAllowanceThatHaveAnEffectOnItExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_IncomeOrLossFromInsuranceAndInvestmentContractsMembersrtProductOrServiceAxis",
      "name": "ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R183": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail",
     "longName": "999173 - Disclosure - Other Net Investment Result - Summary of Other Net Investment Result (Detail)",
     "shortName": "Other Net Investment Result - Summary of Other Net Investment Result (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "183",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestIncomeFromFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R184": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
     "longName": "999174 - Disclosure - Other Net Investment Result - Summary Of Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method (Detail)",
     "shortName": "Other Net Investment Result - Summary Of Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "184",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_DebtSecuritiesAndMoneyMarketInstrumentsMemberifrsfullClassesOfAssetsAxis",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodExplantory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R185": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
     "longName": "999175 - Disclosure - Other Net Investment Result - Summary Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss (Detail)",
     "shortName": "Other Net Investment Result - Summary Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "185",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossExplanatory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_HedgedOnPolicyHolderFundMemberifrsfullTypesOfHedgesAxis_NonDerivativeAssetsMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "aeg:InterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossExplanatory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R186": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
     "longName": "999176 - Disclosure - Other Net Investment Result - Summary Of Other Investment Income Explanatory (Detail)",
     "shortName": "Other Net Investment Result - Summary Of Other Investment Income Explanatory (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "186",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:OtherNetInvestmentIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherInvestmentIncomeExplanatory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:OtherNetInvestmentIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherInvestmentIncomeExplanatory",
       "aeg:DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R187": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
     "longName": "999177 - Disclosure - Other Net Investment Result - Summary Of Results From Financial Transactions (Detail)",
     "shortName": "Other Net Investment Result - Summary Of Results From Financial Transactions (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "187",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:NetFairValueChangeOfFinancialInvestmentsAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:NetFairValueChangeOfFinancialInvestmentsAtFairValueThroughProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R188": {
     "role": "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
     "longName": "999178 - Disclosure - Other Net Investment Result - Summary of Impairment Charges /(Reversals) (Detail)",
     "shortName": "Other Net Investment Result - Summary of Impairment Charges /(Reversals) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "188",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ImpairmentLossRecognisedInProfitOrLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationBetweenTheIncomeStatementsNetImpairmentChargeAndTheFluctuationsInTheLossAllowanceThatHaveAnEffectOnItExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ImpairmentLossesReversalsInOtherNetInvestmentResult",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R189": {
     "role": "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
     "longName": "999179 - Disclosure - Financing Net Investment Result - Summary of Financing Net Investment Result (Detail)",
     "shortName": "Financing Net Investment Result - Summary of Financing Net Investment Result (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "189",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestExpenseOnSubordinatedLoans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult",
       "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestExpenseOnTrustPassThroughSecurities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult",
       "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R190": {
     "role": "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail",
     "longName": "999180 - Disclosure - Fees and Commission Income - Summary of Fees and Commission Income (Detail)",
     "shortName": "Fees and Commission Income - Summary of Fees and Commission Income (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "190",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:FeeFromAssetsManagementAndInsuranceDistrubution",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummaryOfCommissionsAndExpensesExplanatory",
       "aeg:DisclosureOfFeeAndCommissionIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:FeeFromAssetsManagementAndInsuranceDistrubution",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummaryOfCommissionsAndExpensesExplanatory",
       "aeg:DisclosureOfFeeAndCommissionIncomeExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R191": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail",
     "longName": "999181 - Disclosure - Other operating expenses - Summary of Detailed Information of Other Operating Expense (Detail)",
     "shortName": "Other operating expenses - Summary of Detailed Information of Other Operating Expense (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "191",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:EmployeeBenefitsExpense",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory",
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceRelatedMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "aeg:PolicyholderClaimsAndBenefits",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationOfOtherOperatingExpenseExplanatory",
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R192": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail",
     "longName": "999182 - Disclosure - Other operating expenses - Summary of Employee Expenses (Detail)",
     "shortName": "Other operating expenses - Summary of Employee Expenses (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "192",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:WagesAndSalaries",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory",
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:WagesAndSalaries",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory",
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R193": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
     "longName": "999183 - Disclosure - Other operating expenses - Summary of Cumulative Number of Shares Allocated (Detail)",
     "shortName": "Other operating expenses - Summary of Cumulative Number of Shares Allocated (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "193",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:NumberOfSharesConditionallyGranted",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:NumberOfSharesConditionallyGranted",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R194": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail",
     "longName": "999184 - Disclosure - Other operating expenses - Summary of Cumulative Number of Shares Allocated  (Parenthetical) (Detail)",
     "shortName": "Other operating expenses - Summary of Cumulative Number of Shares Allocated  (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "194",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyFourMemberifrsfullCharacteristicsOfDefinedBenefitPlansAxis",
      "name": "aeg:NumberOfSharesRemainConditionallyGranted",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyFourMemberifrsfullCharacteristicsOfDefinedBenefitPlansAxis",
      "name": "aeg:NumberOfSharesRemainConditionallyGranted",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "INF",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R195": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
     "longName": "999185 - Disclosure - Other operating expenses - Summary of Cumulative Number of Shares Allocated On Variable Compensation (Detail)",
     "shortName": "Other operating expenses - Summary of Cumulative Number of Shares Allocated On Variable Compensation (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "195",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "aeg:NumberOfShareOptionsUnvestedInShareBasedPaymentArrangement",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2022",
      "name": "aeg:NumberOfShareOptionsUnvestedInShareBasedPaymentArrangement",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R196": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
     "longName": "999186 - Disclosure - Other operating expenses - Summary of Cumulative Number of Shares Allocated On Variable Compensation (Parenthetical) (Detail)",
     "shortName": "Other operating expenses - Summary of Cumulative Number of Shares Allocated On Variable Compensation (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "196",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyThreeMemberifrsfullDefinedBenefitPlansAxis",
      "name": "aeg:NumberOfShareOptionGrantedInShareBasedPaymentArrangement",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyThreeMemberifrsfullDefinedBenefitPlansAxis",
      "name": "aeg:NumberOfShareOptionGrantedInShareBasedPaymentArrangement",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R197": {
     "role": "http://www.aegon.com/role/OtherOperatingExpensesAdditionalInformationDetail",
     "longName": "999187 - Disclosure - Other operating expenses -  Additional Information (Detail)",
     "shortName": "Other operating expenses -  Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "197",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PercentageOfNonExecutiveDirectorsPaidInCash",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PercentageOfNonExecutiveDirectorsPaidInCash",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R198": {
     "role": "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
     "longName": "999188 - Disclosure - Commissions and Expenses - Summary of Commissions and Expenses (Detail)",
     "shortName": "Commissions and Expenses - Summary of Commissions and Expenses (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "198",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:EmployeeBenefitsExpense",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory",
       "ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:EmployeeBenefitsExpense",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutCommissionsAndExpensesExplanatory",
       "aeg:DisclosureOfCommissionsAndExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R199": {
     "role": "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail",
     "longName": "999189 - Disclosure - Interest Charges and Related Fees - Summary of Interest Charges and Related Fees (Detail)",
     "shortName": "Interest Charges and Related Fees - Summary of Interest Charges and Related Fees (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "199",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:InterestExpenseOnSubordinatedLoans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult",
       "aeg:DisclosureOfFinancingNetInvestmentResultExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:InterestExpenseOnSubordinatedLoans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInterestChargesAndRelatedFeesExplanatory",
       "ifrs-full:DisclosureOfInterestExpenseExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R200": {
     "role": "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail",
     "longName": "999190 - Disclosure - Other Income / (Charges) - Summary of Other Income / (Charges) (Detail)",
     "shortName": "Other Income / (Charges) - Summary of Other Income / (Charges) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "200",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:OtherIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutOtherOperatingIncomeAndOtherChargesExplanatory",
       "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R201": {
     "role": "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail",
     "longName": "999191 - Disclosure - Other Income / (Charges) - Additional Information (Detail)",
     "shortName": "Other Income / (Charges) - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "201",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProceedsFromSaleOfShares",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "div",
       "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProceedsFromSaleOfShares",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "div",
       "aeg:DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R202": {
     "role": "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail",
     "longName": "999192 - Disclosure - Income Taxes - Summary of the Components of Income Tax for Period (Income) / Charge (Detail)",
     "shortName": "Income Taxes - Summary of the Components of Income Tax for Period (Income) / Charge (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "202",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:CurrentTaxExpenseIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfComponentsOfIncomeTaxExplanatory",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:CurrentTaxExpenseIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfComponentsOfIncomeTaxExplanatory",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R203": {
     "role": "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
     "longName": "999193 - Disclosure - Income Taxes - Summary of Reconciliation Between Standard and Effective Income Tax (Detail)",
     "shortName": "Income Taxes - Summary of Reconciliation Between Standard and Effective Income Tax (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "203",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:AccountingProfit",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationBetweenStandardAndEffectiveIncomeTaxExplanatory",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:AccountingProfit",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfReconciliationBetweenStandardAndEffectiveIncomeTaxExplanatory",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R204": {
     "role": "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
     "longName": "999194 - Disclosure - Income Taxes - Additional Information (Detail)",
     "shortName": "Income Taxes - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "204",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ApplicableTaxRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ApplicableTaxRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "3",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfIncomeTaxExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R205": {
     "role": "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail",
     "longName": "999195 - Disclosure - Income Taxes - Summary of Income Tax Related to Components of Other Comprehensive Income (Detail)",
     "shortName": "Income Taxes - Summary of Income Tax Related to Components of Other Comprehensive Income (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "205",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R206": {
     "role": "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail",
     "longName": "999196 - Disclosure - Income Taxes - Summary of Income Tax Recognized Directly in Retained Earnings (Detail)",
     "shortName": "Income Taxes - Summary of Income Tax Recognized Directly in Retained Earnings (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "206",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:IncomeTaxRelatedToEquityInstruments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfIncomeTaxRecognizedDirectlyInRetainedEarningsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:IncomeTaxRelatedToEquityInstruments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfIncomeTaxRecognizedDirectlyInRetainedEarningsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R207": {
     "role": "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail",
     "longName": "999197 - Disclosure - Shares in Group Companies - Summary of Shares in Group Companies (Detail)",
     "shortName": "Shares in Group Companies - Summary of Shares in Group Companies (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "207",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:InvestmentAccountedForUsingEquityMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:InvestmentAccountedForUsingEquityMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutInterestsInOtherEntitiesExplanatory",
       "ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R208": {
     "role": "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
     "longName": "999198 - Disclosure - Earnings Per Share - Summary of Basic Earnings Per Share (Detail)",
     "shortName": "Earnings Per Share - Summary of Basic Earnings Per Share (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "208",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLossAttributableToOwnersOfParent",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProfitLossAttributableToOwnersOfParentForBasicEarningsPerShare",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:EarningsPerShareExplanatory",
       "ifrs-full:DisclosureOfEarningsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R209": {
     "role": "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail",
     "longName": "999199 - Disclosure - Dividend Per Common Share - Summary of Dividend Per Common Share (Detail)",
     "shortName": "Dividend Per Common Share - Summary of Dividend Per Common Share (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "209",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DividendPerCommonShare",
      "unitRef": "Unit_EUR_per_Share",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDividendPerCommonShareExplanatory",
       "aeg:DisclosureOfDividendsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DividendPerCommonShare",
      "unitRef": "Unit_EUR_per_Share",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDividendPerCommonShareExplanatory",
       "aeg:DisclosureOfDividendsPerShareExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R210": {
     "role": "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail",
     "longName": "999200 - Disclosure - Cash and Cash Equivalents - Summary of Detailed Information about Cash and Cash Equivalents (Detail)",
     "shortName": "Cash and Cash Equivalents - Summary of Detailed Information about Cash and Cash Equivalents (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "210",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Cash",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory",
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Cash",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory",
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R211": {
     "role": "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
     "longName": "999201 - Disclosure - Cash and Cash Equivalents - Additional Information (Detail)",
     "shortName": "Cash and Cash Equivalents - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "211",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:RestrictedCashAndCashEquivalents",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "aeg:DisclosureOfSummaryCashFlowsStatementExplanatoryTextBlock",
       "ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R212": {
     "role": "http://www.aegon.com/role/CashAndCashEquivalentsDisclosureOfDetailedInformationOfCashFlowStatementDetail",
     "longName": "999202 - Disclosure - Cash and Cash Equivalents - Disclosure of Detailed Information of Cash Flow Statement (Detail)",
     "shortName": "Cash and Cash Equivalents - Disclosure of Detailed Information of Cash Flow Statement (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "212",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:CashFlowsFromUsedInOperatingActivities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R213": {
     "role": "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
     "longName": "999203 - Disclosure - Cash and Cash Equivalents - Summary of Reconciliation of Liabilities Arising from Financing Activities (Detail)",
     "shortName": "Cash and Cash Equivalents - Summary of Reconciliation of Liabilities Arising from Financing Activities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "213",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_CashFlowHedgesMemberifrsfullTypesOfHedgesAxis_SubordinatedBorrowingsMemberifrsfullBorrowingsByNameAxis",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R214": {
     "role": "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail",
     "longName": "999204 - Disclosure - Investments - Summary of Investments for General Accounts Comprise Financial Assets Excluding Derivatives And Investments in Real Estate (Detail)",
     "shortName": "Investments - Summary of Investments for General Accounts Comprise Financial Assets Excluding Derivatives And Investments in Real Estate (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "214",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_FinancialAssetsExcludingDerivativesCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "aeg:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeThatShallBeRecycled",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInvestmentsInFinancialAssetsAndRealEstateExplanatory",
       "aeg:DisclosureOfInvestmentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R215": {
     "role": "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
     "longName": "999205 - Disclosure - Investments - Summary of Financial Assets Excluding Derivatives (Detail)",
     "shortName": "Investments - Summary of Financial Assets Excluding Derivatives (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "215",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_FinancialAssetsExcludingDerivativesMeasurementCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "aeg:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeThatShallBeRecycled",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFinancialAssetsExplanatory",
       "aeg:DisclosureOfInvestmentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R216": {
     "role": "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
     "longName": "999206 - Disclosure - Investments - Additional Information (Detail)",
     "shortName": "Investments - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "216",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DebtSecuritiesMoneyMarketAndOtherShorttermInstrumentsMemberifrsfullClassesOfAssetsAxis",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R217": {
     "role": "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail",
     "longName": "999207 - Disclosure - Investments - Summary of Investments in Real Estate (Detail)",
     "shortName": "Investments - Summary of Investments in Real Estate (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "217",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:InvestmentProperty",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:AdditionsFromAcquisitionsInvestmentProperty",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R218": {
     "role": "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail",
     "longName": "999208 - Disclosure - Investments - Summary of investments in real estate held by entities (Detail)",
     "shortName": "Investments - Summary of investments in real estate held by entities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "218",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:PercentageOfIncreaseInValueOfProperties",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:PercentageOfIncreaseInValueOfProperties",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R219": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
     "longName": "999209 - Disclosure - Derivatives - Summary of Derivative Asset and Liability (Detail)",
     "shortName": "Derivatives - Summary of Derivative Asset and Liability (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "219",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DerivativeFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "ifrs-full:DerivativeFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DerivativeFinancialInstrumentsAndHedgingActivitiesExplanatory",
       "ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R220": {
     "role": "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
     "longName": "999210 - Disclosure - Derivatives - Additional Information (Detail)",
     "shortName": "Derivatives - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "220",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DescriptionOfPeriodsWhenCashFlowsExpectedToBeOccur",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DescriptionOfPeriodsWhenCashFlowsExpectedToBeOccur",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R221": {
     "role": "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
     "longName": "999211 - Disclosure - Derivatives - Derivatives Not Designated In Hedge (Detail)",
     "shortName": "Derivatives - Derivatives Not Designated In Hedge (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "221",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DerivativeFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DerivativesNotDesignatedAsHedgesWhereAegonBearsTheRiskMemberifrsfullTypesOfHedgesAxis",
      "name": "ifrs-full:DerivativeFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDerivativesNotDesignatedInHedgeGeneralAccountExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R222": {
     "role": "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
     "longName": "999212 - Disclosure - Derivatives - Credit Derivative Disclosure By Quality (Detail)",
     "shortName": "Derivatives - Credit Derivative Disclosure By Quality (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "222",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:CreditDerivativeNominalAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInternalCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AAACreditGradesMemberifrsfullInternalCreditGradesAxis",
      "name": "ifrs-full:CreditDerivativeNominalAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInternalCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R223": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail",
     "longName": "999213 - Disclosure - Derivatives - Summary of Gains Losses On Cash Flow Hedge Ineffectiveness (Detail)",
     "shortName": "Derivatives - Summary of Gains Losses On Cash Flow Hedge Ineffectiveness (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "223",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_CashFlowHedgesMemberifrsfullTypesOfHedgesAxis",
      "name": "ifrs-full:GainLossOnHedgeIneffectiveness",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfGainLossOnFairValueHedgeIneffectiveness",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_CashFlowHedgesMemberifrsfullTypesOfHedgesAxis",
      "name": "ifrs-full:GainLossOnHedgeIneffectiveness",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfGainLossOnFairValueHedgeIneffectiveness",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R224": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
     "longName": "999214 - Disclosure - Derivatives - Summary of Cash Flows are Expected to Occur (Detail)",
     "shortName": "Derivatives - Summary of Cash Flows are Expected to Occur (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "224",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:CashInflows",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfExpectedFutureCashFlowsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:CashInflows",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfExpectedFutureCashFlowsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R225": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
     "longName": "999215 - Disclosure - Derivatives - Summary of Information about Terms and Conditions of Hedging Instruments (Detail)",
     "shortName": "Derivatives - Summary of Information about Terms and Conditions of Hedging Instruments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "225",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ForeignExchangeFxForwardMemberifrsfullClassesOfFinancialInstrumentsAxis_HedgesOfNetInvestmentInForeignOperationsMemberifrsfullTypesOfHedgesAxis",
      "name": "ifrs-full:NominalAmountOfHedgingInstrument",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:SummaryOfDetailedInformationAboutHedgingInstrumentsExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ForeignExchangeFxForwardMemberifrsfullClassesOfFinancialInstrumentsAxis_HedgesOfNetInvestmentInForeignOperationsMemberifrsfullTypesOfHedgesAxis_NotLaterThanOneMonthMemberifrsfullMaturityAxis",
      "name": "ifrs-full:NominalAmountOfHedgingInstrument",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R226": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
     "longName": "999216 - Disclosure - Derivatives - Summary of Detailed Information about Hedging Instruments (Detail)",
     "shortName": "Derivatives - Summary of Detailed Information about Hedging Instruments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "226",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_FairValueHedgesMemberifrsfullTypesOfHedgesAxis_InterestRateSwapContractMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "ifrs-full:NominalAmountOfHedgingInstrument",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:SummaryOfDetailedInformationAboutHedgingInstrumentsExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_FairValueHedgesMemberifrsfullTypesOfHedgesAxis_InterestRateSwapContractMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "ifrs-full:NominalAmountOfHedgingInstrument",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:SummaryOfDetailedInformationAboutHedgingInstrumentsExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R227": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
     "longName": "999217 - Disclosure - Derivatives - Summary of Detailed Information About Hedged Items (Detail)",
     "shortName": "Derivatives - Summary of Detailed Information About Hedged Items (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "227",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_CorporateDebtHedgeProgramMemberifrsfullHedgedItemsAxis_FairValueHedgesMemberifrsfullTypesOfHedgesAxis",
      "name": "ifrs-full:HedgedItemLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:SummaryOfDetailedInformationAboutHedgedItemsExplanatoryPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CorporateDebtHedgeProgramMemberifrsfullHedgedItemsAxis_FairValueHedgesMemberifrsfullTypesOfHedgesAxis",
      "name": "ifrs-full:HedgedItemLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:SummaryOfDetailedInformationAboutHedgedItemsExplanatoryPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R228": {
     "role": "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail",
     "longName": "999218 - Disclosure - Derivatives - Summary of Nominal Amount and Fair Value of Credit Derivatives (Detail)",
     "shortName": "Derivatives - Summary of Nominal Amount and Fair Value of Credit Derivatives (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "228",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:CreditDerivativeNominalAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInternalCreditRiskExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:IncreaseDecreaseInCreditDerivativeFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R229": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail",
     "longName": "999219 - Disclosure - Investments in Joint Ventures and Associates - Schedule of Investments in Joint Ventures and Associates (Detail)",
     "shortName": "Investments in Joint Ventures and Associates - Schedule of Investments in Joint Ventures and Associates (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "229",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:InvestmentsInJointVentures",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:AdditionsToInvestmentsInJointVentures",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureDetailOfInvestmentsInAssociatesSubsidariesAndJointVenture",
       "aeg:DisclosureOfInvestmentsInJointVenturesAndAssociates",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R230": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
     "longName": "999220 - Disclosure - Investments in Joint Ventures and Associates - Additional information (Detail)",
     "shortName": "Investments in Joint Ventures and Associates - Additional information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "230",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:FairValueOfInvestmentInQuotedShareHeldByTheCompany",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:FairValueOfInvestmentInQuotedShareHeldByTheCompany",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R231": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
     "longName": "999221 - Disclosure - Investments in Joint Ventures and Associates - Summarized Financial Information of Joint Ventures (Detail)",
     "shortName": "Investments in Joint Ventures and Associates - Summarized Financial Information of Joint Ventures (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "231",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_SantanderSpainLifeMemberifrsfullJointVenturesAxis",
      "name": "ifrs-full:CashAndCashEquivalents",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfFinancialInformationOfJointVenturesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R232": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
     "longName": "999222 - Disclosure - Investments in Joint Ventures and Associates - Summary of Overview of Summarized Financial Information to Carrying Amount of Joint Ventures (Detail)",
     "shortName": "Investments in Joint Ventures and Associates - Summary of Overview of Summarized Financial Information to Carrying Amount of Joint Ventures (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "232",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:AdjustmentsForFairValueGainsLosses",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AssociatesMemberifrsfullSignificantInvestmentsInAssociatesAxis",
      "name": "aeg:NetAssetsLiabilitiesExcludingGoodwill",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R233": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
     "longName": "999223 - Disclosure - Investments in Joint Ventures and Associates - Summary of Financial Information of Joint Ventures  (Detail)",
     "shortName": "Investments in Joint Ventures and Associates - Summary of Financial Information of Joint Ventures  (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "233",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_JointVenturesWhereEntityIsVenturerMemberifrsfullCategoriesOfRelatedPartiesAxis_SantanderSpainLifeMemberifrsfullJointVenturesAxis",
      "name": "ifrs-full:ProfitLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOverviewOfFinancialInformationOfJointVenturesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R234": {
     "role": "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
     "longName": "999224 - Disclosure - Investments in Joint Ventures and Associates - Schedule of Financial Information of Associates (Detail)",
     "shortName": "Investments in Joint Ventures and Associates - Schedule of Financial Information of Associates (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "234",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DerivativeFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_OtherAssociatesMemberifrsfullSignificantInvestmentsInAssociatesAxis",
      "name": "ifrs-full:CurrentAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R235": {
     "role": "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail",
     "longName": "999225 - Disclosure - Deferred Expenses - Summary of Deferred Costs Arising From Insurance Contracts (Detail)",
     "shortName": "Deferred Expenses - Summary of Deferred Costs Arising From Insurance Contracts (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "235",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:InsuranceContractsThatAreLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_DeferredTransactionCostsForInvestmentManagementServicesMemberAEGAmountArisingFromInsuranceContractsAxis",
      "name": "ifrs-full:InsuranceContractsThatAreLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDeferredCostsArisingFromInsuranceContractsExplanatory",
       "aeg:DisclosureOfDeferredExpensesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R236": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail",
     "longName": "999226 - Disclosure - Other Assets and Receivables - Summary of Other Assets and Receivables (Detail)",
     "shortName": "Other Assets and Receivables - Summary of Other Assets and Receivables (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "236",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:RealEstateHeldForOwnUseAndEquipment",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R237": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail",
     "longName": "999227 - Disclosure - Other Assets and Receivables - Summary of Real Estate Held for Own Use and Equipment (Detail)",
     "shortName": "Other Assets and Receivables - Summary of Real Estate Held for Own Use and Equipment (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "237",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:RealEstateHeldForOwnUseAndEquipment",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_RealEstateHeldForOwnUseMemberifrsfullClassesOfPropertyPlantAndEquipmentAxis",
      "name": "aeg:RealEstateHeldForOwnUseAndEquipment",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R238": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
     "longName": "999228 - Disclosure - Other Assets and Receivables - Additional Information (Detail)",
     "shortName": "Other Assets and Receivables - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "238",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_BottomOfRangeMemberifrsfullRangeAxis_BuildingsMemberifrsfullClassesOfPropertyPlantAndEquipmentAxis",
      "name": "aeg:UsefulLivesAndDepreciatedPeriod",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_BottomOfRangeMemberifrsfullRangeAxis_BuildingsMemberifrsfullClassesOfPropertyPlantAndEquipmentAxis",
      "name": "aeg:UsefulLivesAndDepreciatedPeriod",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R239": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail",
     "longName": "999229 - Disclosure - Other Assets and Receivables - Summary of Receivables (Detail)",
     "shortName": "Other Assets and Receivables - Summary of Receivables (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "239",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:ReceivablesFromPolicyHolders",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:ReceivablesFromPolicyHolders",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R240": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfMovementsInTheExpectedCreditLossesDetail",
     "longName": "999230 - Disclosure - Other Assets and Receivables - Summary of Movements in the Expected Credit Losses (Detail)",
     "shortName": "Other Assets and Receivables - Summary of Movements in the Expected Credit Losses (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "240",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "aeg:AllowanceForCreditLossesOnFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfMovementsInProvisionForAllowancesForDoubtfulDebtsExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ExpectedAllowanceForCreditLossesOfFinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfMovementsInProvisionForAllowancesForDoubtfulDebtsExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R241": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfAccruedIncomeDetail",
     "longName": "999231 - Disclosure - Other Assets and Receivables - Summary of Accrued Income (Detail)",
     "shortName": "Other Assets and Receivables - Summary of Accrued Income (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "241",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:AccruedInterest",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfAccruedIncomeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:AccruedInterest",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfAccruedIncomeExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R242": {
     "role": "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
     "longName": "999232 - Disclosure - Other Assets and Receivable - Summary of information about right of use assets (Detail)",
     "shortName": "Other Assets and Receivable - Summary of information about right of use assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "242",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:RightofuseAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:AdditionsToRightofuseAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R243": {
     "role": "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail",
     "longName": "999233 - Disclosure - Intangible Assets - Summary of Intangible Assets (Detail)",
     "shortName": "Intangible Assets - Summary of Intangible Assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "243",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:IntangibleAssetsAndGoodwill",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023",
      "name": "ifrs-full:IntangibleAssetsAndGoodwill",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory",
       "ifrs-full:DisclosureOfIntangibleAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R244": {
     "role": "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
     "longName": "999234 - Disclosure - Intangible Assets - Additional Information (Detail)",
     "shortName": "Intangible Assets - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "244",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Goodwill",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:ScheduleOfCarryingAmountOfGoodwillAllocatedToCashGeneratingUnitsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DescriptionOfAdjustmentsForImpairmentLossRecognizedInProfitOrLossGoodwill",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R245": {
     "role": "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail",
     "longName": "999235 - Disclosure - Intangible Assets - Summary of Geographically Cash-Generating Units to Goodwill (Detail)",
     "shortName": "Intangible Assets - Summary of Geographically Cash-Generating Units to Goodwill (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "245",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Goodwill",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:ScheduleOfCarryingAmountOfGoodwillAllocatedToCashGeneratingUnitsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AmericasMemberifrsfullGeographicalAreasAxis",
      "name": "ifrs-full:Goodwill",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:ScheduleOfCarryingAmountOfGoodwillAllocatedToCashGeneratingUnitsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R246": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
     "longName": "999236 - Disclosure - Shareholders' Equity - Summary of Issued Share Capital and Reserves Attributable to Shareholders (Detail)",
     "shortName": "Shareholders' Equity - Summary of Issued Share Capital and Reserves Attributable to Shareholders (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "246",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:SharePremium",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSharePremiumExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ShareholdersOfAegonLtdMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:ShareCapitalParValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R247": {
     "role": "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
     "longName": "999237 - Disclosure - Shareholders' Equity - Additional Information (Detail)",
     "shortName": "Shareholders' Equity - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "247",
     "firstAnchor": {
      "contextRef": "P06_30_2025To06_30_2025",
      "name": "aeg:StockRepurchasedDuringThePeriodValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P06_30_2025To06_30_2025_VerenigingAegonMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:StockRepurchasedDuringThePeriodValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R248": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
     "longName": "999238 - Disclosure - Shareholders' Equity - Summary of Share Capital - Par Value (Detail)",
     "shortName": "Shareholders' Equity - Summary of Share Capital - Par Value (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "248",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:IssuedCapital",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_OrdinarySharesMemberifrsfullClassesOfShareCapitalAxis",
      "name": "ifrs-full:IssuedCapital",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfShareCapitalExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R249": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail",
     "longName": "999239 - Disclosure - Shareholders' Equity - Summary of Share Premium (Detail)",
     "shortName": "Shareholders' Equity - Summary of Share Premium (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "249",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:SharePremium",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSharePremiumExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_OrdinarySharesMemberifrsfullClassesOfShareCapitalAxis",
      "name": "ifrs-full:SharePremium",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSharePremiumExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R250": {
     "role": "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
     "longName": "999240 - Disclosure - Shareholders' Equity - Disclosure of Share Capital (Detail)",
     "shortName": "Shareholders' Equity - Disclosure of Share Capital (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "250",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_OrdinarySharesMemberifrsfullClassesOfShareCapitalAxis_TreasurySharesMemberifrsfullComponentsOfEquityAxis",
      "name": "aeg:WeightedAverageNumberOfCommonShares",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfWeightedAverageNumberOfTreasurySharesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_OrdinarySharesMemberifrsfullClassesOfShareCapitalAxis_TreasurySharesMemberifrsfullComponentsOfEquityAxis",
      "name": "aeg:WeightedAverageNumberOfCommonShares",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-3",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfWeightedAverageNumberOfTreasurySharesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R251": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail",
     "longName": "999241 - Disclosure - Shareholders' Equity - Summary of Revaluation Reserves (Detail)",
     "shortName": "Shareholders' Equity - Summary of Revaluation Reserves (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "251",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024_ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMemberifrsfullComponentsOfEquityAxis",
      "name": "aeg:RevaluationReserve",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfChangesInRevaluationReserveAvailableForSaleAndOtherExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2022_ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMemberifrsfullComponentsOfEquityAxis",
      "name": "aeg:RevaluationReserve",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfChangesInRevaluationReserveAvailableForSaleAndOtherExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R252": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
     "longName": "999242 - Disclosure - Shareholders' Equity - Summary of Revaluation Reserve for Investments Measured at FVOCI (Detail)",
     "shortName": "Shareholders' Equity - Summary of Revaluation Reserve for Investments Measured at FVOCI (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "252",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R253": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail",
     "longName": "999243 - Disclosure - Shareholders' Equity - Summary of Remeasurement of Defined Benefit Plans (Detail)",
     "shortName": "Shareholders' Equity - Summary of Remeasurement of Defined Benefit Plans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "253",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DisposalOfABusiness",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherReservesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2022_ReserveOfRemeasurementsOfDefinedBenefitPlansMemberifrsfullComponentsOfEquityAxis",
      "name": "ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfRemeasurementOfDefinedBenefitPlansExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R254": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail",
     "longName": "999244 - Disclosure - Shareholders' Equity - Summary of Other Reserves (Detail)",
     "shortName": "Shareholders' Equity - Summary of Other Reserves (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "254",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:OtherReserves",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherReservesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:MovementInForeignCurrencyTranslationAndNetForeignInvestmentHedgingReserves",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfOtherReservesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R255": {
     "role": "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
     "longName": "999245 - Disclosure - Shareholders' Equity - Summary of Shareholders' Equity (Detail)",
     "shortName": "Shareholders' Equity - Summary of Shareholders' Equity (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "255",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:Equity",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:NetIncomeTwoThousandTwentyFourRetained",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfScheduleOfShareholdersEquityExplanatory",
       "ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R256": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
     "longName": "999246 - Disclosure - Other Equity Instruments - Summary of Other Equity Instruments (Detail)",
     "shortName": "Other Equity Instruments - Summary of Other Equity Instruments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "256",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "aeg:OtherEquityInstrumentsOutstandingAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2022",
      "name": "aeg:OtherEquityInstrumentsOutstandingAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R257": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
     "longName": "999247 - Disclosure - Other Equity Instruments - Summary of Coupon Details - Summary of Perpetual Contingent Convertible (Detail)",
     "shortName": "Other Equity Instruments - Summary of Coupon Details - Summary of Perpetual Contingent Convertible (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "257",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_PerpetualContingentConvertibleSecuritiesMemberAEGConvertibleDebtSecuritiesAxis",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R258": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
     "longName": "999248 - Disclosure - Other Equity Instruments - Summary of Coupon Details - Summary of Perpetual Contingent Convertible (Parenthetical) (Detail)",
     "shortName": "Other Equity Instruments - Summary of Coupon Details - Summary of Perpetual Contingent Convertible (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "258",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_PerpetualContingentConvertibleSecuritiesMemberAEGConvertibleDebtSecuritiesAxis_RangeOneMemberifrsfullBorrowingsByNameAxis",
      "name": "aeg:CouponInterestRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "5",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_PerpetualContingentConvertibleSecuritiesMemberAEGConvertibleDebtSecuritiesAxis_RangeOneMemberifrsfullBorrowingsByNameAxis",
      "name": "ifrs-full:BorrowingsInterestRateBasis",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R259": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
     "longName": "999249 - Disclosure - Other Equity Instruments - Summary of Coupon Details - Junior Perpetual Capital Securities (Detail)",
     "shortName": "Other Equity Instruments - Summary of Coupon Details - Junior Perpetual Capital Securities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "259",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_JuniorPerpetualCapitalSecuritiesMemberAEGOtherEquityInstrumentAxis",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R260": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
     "longName": "999250 - Disclosure - Other Equity Instruments - Summary of Coupon Details - Junior Perpetual Capital Securities (Parenthetical) (Detail)",
     "shortName": "Other Equity Instruments - Summary of Coupon Details - Junior Perpetual Capital Securities (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "260",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:DebtInstrumentRedeemedAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R261": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
     "longName": "999251 - Disclosure - Other Equity Instruments - Summary of Coupon Details - Perpetual Cumulative Subordinated Bonds (Detail)",
     "shortName": "Other Equity Instruments - Summary of Coupon Details - Perpetual Cumulative Subordinated Bonds (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "261",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_PerpetualCumulativeSubordinatedBondsMemberAEGOtherEquityInstrumentAxis",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R262": {
     "role": "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
     "longName": "999252 - Disclosure - Other Equity Instruments - Summary of Coupon Details - Perpetual Cumulative Subordinated Bonds (Parenthetical) (Detail)",
     "shortName": "Other Equity Instruments - Summary of Coupon Details - Perpetual Cumulative Subordinated Bonds (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "262",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:NotionalAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "aeg:DisclosureOfOtherEquityInstrumentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_PerpetualCumulativeSubordinatedBondsMemberAEGOtherEquityInstrumentAxis",
      "name": "aeg:DescriptionAboutBasisPoint",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCouponDetailsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R263": {
     "role": "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
     "longName": "999253 - Disclosure - Subordinated Borrowings - Summary of Subordinated Borrowings (Detail)",
     "shortName": "Subordinated Borrowings - Summary of Subordinated Borrowings (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "263",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:SubordinatedLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:FinancialLiabilitiesAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R264": {
     "role": "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
     "longName": "999254 - Disclosure - Subordinated Borrowings - Summary of Subordinated Borrowings (Parenthetical) (Detail)",
     "shortName": "Subordinated Borrowings - Summary of Subordinated Borrowings (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "264",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_USDEightHundredMillionFixedFloatingSubordinatedNotesMemberifrsfullBorrowingsByNameAxis",
      "name": "aeg:SubordinatedNotesIssued",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_USDEightHundredMillionFixedFloatingSubordinatedNotesMemberifrsfullBorrowingsByNameAxis",
      "name": "aeg:SubordinatedNotesIssued",
      "unitRef": "Unit_USD",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R265": {
     "role": "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail",
     "longName": "999255 - Disclosure - Trust Pass-Through Securities - Summary of Trust Pass-through Securities (Detail)",
     "shortName": "Trust Pass-Through Securities - Summary of Trust Pass-through Securities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "265",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:TrustPassThroughSecurities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:FairValueOfTrustPassThroughSecuritiesLoans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R266": {
     "role": "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
     "longName": "999256 - Disclosure - Trust Pass-Through Securities - Additional Information (Detail)",
     "shortName": "Trust Pass-Through Securities - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "266",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:TrustPassThroughSecuritiesExtensionPeriodDescription",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:TrustPassThroughSecuritiesExtensionPeriodDescription",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "aeg:DisclosureOfTrustPassThroughSecuritiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R267": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
     "longName": "999257 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Assets and Liabilities for Groups of Insurance Contracts Issued and Reinsurance Contracts Held by Measurement Model (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Assets and Liabilities for Groups of Insurance Contracts Issued and Reinsurance Contracts Held by Measurement Model (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "267",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:InsuranceContractsThatAreAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:ReinsuranceContractsHeldLiabilitiesAssetsNet",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R268": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
     "longName": "999258 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Insurance Contracts and Reinsurance Contracts by Type (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Insurance Contracts and Reinsurance Contracts by Type (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "268",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:InsuranceContractsThatAreAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis_InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMemberifrsfullInsuranceContractsAxis",
      "name": "ifrs-full:IncreaseDecreaseThroughInsuranceRevenueInsuranceContractsLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R269": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail",
     "longName": "999259 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Investment Contracts with Discretionary Participating Features (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Investment Contracts with Discretionary Participating Features (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "269",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "aeg:InvestmentContractWithDiscretionaryParticipatingFeatureAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023",
      "name": "aeg:InvestmentContractWithDiscretionaryParticipatingFeatureAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R270": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
     "longName": "999260 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Movement Schedules by Measurement Component (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Movement Schedules by Measurement Component (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "270",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:InsuranceContractsThatAreAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_InvestmentContractWithDiscretionaryParticipationFeaturesMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "aeg:InvestmentContractWithDiscretionaryParticipatingFeaturesAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfReconciliationOfChangesInInsuranceContractsByComponentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R271": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail",
     "longName": "999261 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of New Contracts Recognized (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of New Contracts Recognized (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "271",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "aeg:IncreaseDecreaseThroughEffectsOfInsuranceContractsLiabilityAssetAggregateAmountRecognized",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriod",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "aeg:IncreaseDecreaseThroughEffectsOfInsuranceContractsLiabilityAssetAggregateAmountRecognized",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriod",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R272": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
     "longName": "999262 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Maturity Analysis Contractual Service Margin (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Maturity Analysis Contractual Service Margin (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "272",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis_InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMemberifrsfullInsuranceContractsAxis",
      "name": "aeg:ContractualServiceMarginAfterTax",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis_InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMemberifrsfullInsuranceContractsAxis",
      "name": "aeg:ContractualServiceMarginAfterTax",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R273": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
     "longName": "999263 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Contractual Service Margin by Transition Method (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Contractual Service Margin by Transition Method (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "273",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:InsuranceContractsLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
       "aeg:DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_ContractualServiceMarginRelatedToContractsThatExistedAtTransitionDateToWhichModifiedRetrospectiveApproachHasBeenAppliedMemberifrsfullInsuranceContractsByComponentsAxis_InsuranceContractsIssuedMemberifrsfullDisaggregationOfInsuranceContractsAxis",
      "name": "ifrs-full:InsuranceContractsLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfMovementInContractualServiceMargin",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R274": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
     "longName": "999264 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "274",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis_InsuranceContractMemberifrsfullInsuranceContractsAxis_InvestmentsAndOtherAssetsAllocatedToInsuranceContractsMemberifrsfullClassesOfAssetsAxis",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R275": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail",
     "longName": "999265 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Yield Curve Used to Discount Cash Flows that do not Vary Based on Returns on Underlying Items (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Yield Curve Used to Discount Cash Flows that do not Vary Based on Returns on Underlying Items (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "275",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_GBPsrtCurrencyAxis_NotLaterThanOneYearMemberifrsfullMaturityAxis",
      "name": "ifrs-full:YieldUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItems",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_GBPsrtCurrencyAxis_NotLaterThanOneYearMemberifrsfullMaturityAxis",
      "name": "ifrs-full:YieldUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItems",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R276": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
     "longName": "999266 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Detailed Information about Illiquidity Premium Per Portfolio (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Detailed Information about Illiquidity Premium Per Portfolio (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "276",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_FixedDeferredAnnuityMemberifrsfullProductsAndServicesAxis_NotLaterThanOneYearMemberifrsfullMaturityAxis",
      "name": "aeg:PercentageOfIlliquidityPremium",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_FixedDeferredAnnuityMemberifrsfullProductsAndServicesAxis_NotLaterThanOneYearMemberifrsfullMaturityAxis",
      "name": "aeg:PercentageOfIlliquidityPremium",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R277": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
     "longName": "999267 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Net Income and Shareholders' Equity to Changes in Various Underwriting Risks (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Net Income and Shareholders' Equity to Changes in Various Underwriting Risks (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "277",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ContractsWithoutDirectParticipationContractsMemberifrsfullInsuranceContractsAxis_InsuranceRiskMemberifrsfullTypesOfRisksAxis_TwentyIncreaseInLapseRatesMemberifrsfullRiskExposuresAxis",
      "name": "aeg:IncreaseDecreaseInContractualServiceMarginDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithInScopeOfIfrs17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Explanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ContractsWithoutDirectParticipationContractsMemberifrsfullInsuranceContractsAxis_InsuranceRiskMemberifrsfullTypesOfRisksAxis_TwentyIncreaseInLapseRatesMemberifrsfullRiskExposuresAxis",
      "name": "aeg:IncreaseDecreaseInContractualServiceMarginDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithInScopeOfIfrs17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Explanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R278": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail",
     "longName": "999268 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Net Income and Shareholders' Equity to Changes in Various Underwriting Risks (Parenthetical) (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Summary of Net Income and Shareholders' Equity to Changes in Various Underwriting Risks (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "278",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ContractsWithoutDirectParticipationContractsMemberifrsfullInsuranceContractsAxis_InsuranceRiskMemberifrsfullTypesOfRisksAxis_LapseRatesMemberifrsfullRiskExposuresAxis",
      "name": "ifrs-full:PercentageOfReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Explanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ContractsWithoutDirectParticipationContractsMemberifrsfullInsuranceContractsAxis_InsuranceRiskMemberifrsfullTypesOfRisksAxis_LapseRatesMemberifrsfullRiskExposuresAxis",
      "name": "ifrs-full:PercentageOfReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Explanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R279": {
     "role": "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
     "longName": "999269 - Disclosure - (Re)Insurance contracts and investment contracts with discretionary participation features - Additional Information (Detail)",
     "shortName": "(Re)Insurance contracts and investment contracts with discretionary participation features - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "279",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:AmountOfFinancialEconomicAssumptionOnFavorableImpact",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:AmountOfFinancialEconomicAssumptionOnFavorableImpact",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R280": {
     "role": "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail",
     "longName": "999270 - Disclosure - Investment contracts without discretionary participation features - Summary of Investment Contracts for Account of General and Separate Accounts (Detail)",
     "shortName": "Investment contracts without discretionary participation features - Summary of Investment Contracts for Account of General and Separate Accounts (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "280",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:InvestmentContractsLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_WithoutDiscretionaryParticipationFeaturesMemberifrsfullComponentsOfEquityAxis",
      "name": "ifrs-full:InvestmentContractsLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInvestmentContractsWithoutDiscretionaryParticipationFeaturesExplanatory",
       "ifrs-full:DisclosureOfInvestmentContractsLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R281": {
     "role": "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
     "longName": "999271 - Disclosure - Borrowings - Summary of Borrowings (Detail)",
     "shortName": "Borrowings - Summary of Borrowings (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "281",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:ShortTermBorrowingsAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R282": {
     "role": "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
     "longName": "999272 - Disclosure - Borrowings - Additional Information (Detail)",
     "shortName": "Borrowings - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "282",
     "firstAnchor": {
      "contextRef": "PAsOn12_10_2025",
      "name": "ifrs-full:DifferenceBetweenCarryingAmountOfFinancialLiabilityAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligation",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_10_2025",
      "name": "ifrs-full:DifferenceBetweenCarryingAmountOfFinancialLiabilityAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligation",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R283": {
     "role": "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
     "longName": "999273 - Disclosure - Borrowings - Summary of Detailed Composition of Capital Funding (Detail)",
     "shortName": "Borrowings - Summary of Detailed Composition of Capital Funding (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "283",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CapitalFundingMemberifrsfullBorrowingsByNameAxis_USD760MillionSeniorUnsecuredNotesMemberAEGDebtInstrument1Axis",
      "name": "aeg:CouponRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "5",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R284": {
     "role": "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
     "longName": "999274 - Disclosure - Borrowings - Summary of Detailed Composition of Operational Funding (Detail)",
     "shortName": "Borrowings - Summary of Detailed Composition of Operational Funding (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "284",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_FHLBSecuredBorrowingsMemberAEGDebtInstrument1Axis_OperationalFundingMemberifrsfullBorrowingsByNameAxis",
      "name": "aeg:CouponRateInterestDescription",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R285": {
     "role": "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail",
     "longName": "999275 - Disclosure - Provisions - Summary of Provisions (Detail)",
     "shortName": "Provisions - Summary of Provisions (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "285",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:Provisions",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:AdditionalProvisionsOtherProvisions",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfOtherProvisionsExplanatory",
       "ifrs-full:DisclosureOfProvisionsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R286": {
     "role": "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail",
     "longName": "999276 - Disclosure - Provisions - Additional Information (Detail)",
     "shortName": "Provisions - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "286",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:LegalProceedingsProvision",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:LegalProceedingsProvision",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R287": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
     "longName": "999277 - Disclosure - Defined Benefit Plans - Summary of Defined Benefit Plans (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Defined Benefit Plans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "287",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:LiabilityAssetOfDefinedBenefitPlans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:RecognizedAssetsDefinedBenefitPlan",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R288": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
     "longName": "999278 - Disclosure - Defined Benefit Plans - Summary of Movements of Defined Benefit Plans (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Movements of Defined Benefit Plans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "288",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:LiabilityAssetOfDefinedBenefitPlans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:DefinedBenefitPlanExpense",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory",
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R289": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
     "longName": "999279 - Disclosure - Defined Benefit Plans - Summary of Amounts Recognized in Statement of Financial Positions (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Amounts Recognized in Statement of Financial Positions (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "289",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DefinedBenefitObligationAtPresentValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:PlanAssetsAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R290": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
     "longName": "999280 - Disclosure - Defined Benefit Plans - Summary of Fair Value of Plan Assets (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Fair Value of Plan Assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "290",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDefinedBenefitPlansEmployeeBenefitExpensesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:EmployeeBenefitObligationsExpenses",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDefinedBenefitPlansEmployeeBenefitExpensesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R291": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail",
     "longName": "999281 - Disclosure - Defined Benefit Plans - Summary of Breakdown of Plan Assets for Retirement of Benefit Plans (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Breakdown of Plan Assets for Retirement of Benefit Plans (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "291",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DebtInstrumentsAmountContributedToFairValueOfPlanAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DebtInstrumentsAmountContributedToFairValueOfPlanAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R292": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
     "longName": "999282 - Disclosure - Defined Benefit Plans - Additional Information (Detail)",
     "shortName": "Defined Benefit Plans - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "292",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:LiabilityAssetOfDefinedBenefitPlans",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory",
       "ifrs-full:DisclosureOfEmployeeBenefitsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AegonUkMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "aeg:RemainingAverageDurationOfDefinedBenefitsObligation",
      "unitRef": "Unit_Y",
      "xsiNil": "false",
      "lang": null,
      "decimals": "1",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R293": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
     "longName": "999283 - Disclosure - Defined Benefit Plans - Summary of Actuarial Assumptions Used to Determine Defined Benefit Obligations (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Actuarial Assumptions Used to Determine Defined Benefit Obligations (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "293",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_TransamericaMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_TransamericaMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R294": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
     "longName": "999284 - Disclosure - Defined Benefit Plans - Summary of Actuarial Assumptions Used to Determine Defined Benefit Obligations (Parenthetical) (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Actuarial Assumptions Used to Determine Defined Benefit Obligations (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "294",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_PensionDefinedBenefitPlansMemberifrsfullDefinedBenefitPlansAxis_TransamericaMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "ifrs-full:ActuarialAssumptionOfDiscountRates",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_PensionDefinedBenefitPlansMemberifrsfullDefinedBenefitPlansAxis_TransamericaMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "ifrs-full:ActuarialAssumptionOfDiscountRates",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "4",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R295": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
     "longName": "999285 - Disclosure - Defined Benefit Plans - Summary of Estimated Approximate Effects on Defined Benefit Obligation (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Estimated Approximate Effects on Defined Benefit Obligation (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "295",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_DemographicActuarialAssumptionOnMortalityRatesMemberifrsfullActuarialAssumptionsAxis_TransamericaMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DemographicActuarialAssumptionOnMortalityRatesMemberifrsfullActuarialAssumptionsAxis_TransamericaMemberifrsfullSignificantInvestmentsInSubsidiariesAxis",
      "name": "ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R296": {
     "role": "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
     "longName": "999286 - Disclosure - Defined Benefit Plans - Summary of Expected Guaranteed Premiums and Management Fees Net Defined Benefit Liability Asset (Detail)",
     "shortName": "Defined Benefit Plans - Summary of Expected Guaranteed Premiums and Management Fees Net Defined Benefit Liability Asset (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "296",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:ReimbursementRightsAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis_PresentValueOfTheExpectedGuaranteedPremiumsAndManagementFeesMemberifrsfullDefinedBenefitPlansAxis",
      "name": "ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetExplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R297": {
     "role": "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail",
     "longName": "999287 - Disclosure - Deferred Tax - Summary of Deferred Tax (Detail)",
     "shortName": "Deferred Tax - Summary of Deferred Tax (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "297",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:TemporaryDifferencesDeferredTaxAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory",
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:TemporaryDifferencesDeferredTaxAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory",
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R298": {
     "role": "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
     "longName": "999288 - Disclosure - Deferred Tax - Schedule of Net Deferred Tax Assets and Liabilities has been Recognized (Detail)",
     "shortName": "Deferred Tax - Schedule of Net Deferred Tax Assets and Liabilities has been Recognized (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "298",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:DeferredTaxLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory",
       "ifrs-full:DisclosureOfDeferredTaxesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R299": {
     "role": "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
     "longName": "999289 - Disclosure - Deferred Tax - Additional Information (Detail)",
     "shortName": "Deferred Tax - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "299",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:DeferredTaxAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_UnusedTaxCreditsMemberifrsfullTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis",
      "name": "ifrs-full:DeferredTaxExpenseIncome",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R300": {
     "role": "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail",
     "longName": "999290 - Disclosure - Deferred Tax - Schedule of Loss Carryforward Period and Deferred Corporate Income Tax Assets Not Recognized (Detail)",
     "shortName": "Deferred Tax - Schedule of Loss Carryforward Period and Deferred Corporate Income Tax Assets Not Recognized (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "300",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:UnusedTaxCreditsCarryForward",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDeferredIncomeTaxAssetNotRecognizedExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:UnusedTaxCreditsCarryForward",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDeferredIncomeTaxAssetNotRecognizedExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R301": {
     "role": "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail",
     "longName": "999291 - Disclosure - Deferred Tax - Summary of Deferred Corporate Income Tax Asset (Detail)",
     "shortName": "Deferred Tax - Summary of Deferred Corporate Income Tax Asset (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "301",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:DeferredTaxAssetsRecoverableThroughRetentionOfInvestmentUntillRecoveryOrMaturity",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutDeferredCorporateIncomeTaxAssetsTemporaryDifferencesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:DeferredTaxAssetsRecoverableThroughRetentionOfInvestmentUntillRecoveryOrMaturity",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutDeferredCorporateIncomeTaxAssetsTemporaryDifferencesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R302": {
     "role": "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail",
     "longName": "999292 - Disclosure - Other Liabilities - Summary of Other Liabilities (Detail)",
     "shortName": "Other Liabilities - Summary of Other Liabilities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "302",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PayablesDueToPolicyholders",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PayablesDueToPolicyholders",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R303": {
     "role": "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail",
     "longName": "999293 - Disclosure - Accruals - Summary of Accruals (Detail)",
     "shortName": "Accruals - Summary of Accruals (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "303",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:AccruedInterests",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfAccruedLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:AccruedInterests",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfAccruedLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R304": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
     "longName": "999294 - Disclosure - Capital Management and Solvency - Additional Information (Detail)",
     "shortName": "Capital Management and Solvency - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "304",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProportionOfInsuranceLicenseOfAuthorizedControlLevel",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProportionOfInsuranceLicenseOfAuthorizedControlLevel",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R305": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail",
     "longName": "999295 - Disclosure - Capital Management and Solvency - Summary of Capital Ratios of Aegon's Operating Units (Detail)",
     "shortName": "Capital Management and Solvency - Summary of Capital Ratios of Aegon's Operating Units (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "305",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_USsrtStatementGeographicalAxis",
      "name": "aeg:RiskBasedCapitalRatio",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": null
    },
    "R306": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail",
     "longName": "999296 - Disclosure - Capital Management and Solvency - Aegon's Estimated Capital Position (Detail)",
     "shortName": "Capital Management and Solvency - Aegon's Estimated Capital Position (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "306",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProportionGroupSolvencyTwoRatio",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:ProportionGroupSolvencyTwoRatio",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R307": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
     "longName": "999297 - Disclosure - Capital Management and Solvency - Composition of Total Capitalization and Calculation of Gross Financial Leverage Ratio (Detail)",
     "shortName": "Capital Management and Solvency - Composition of Total Capitalization and Calculation of Gross Financial Leverage Ratio (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "307",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:ShareholdersEquity",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:NonControllingInterestAndLongTermIncentivePlanNotYetVested",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCompositionOfCapitalizationAndCalculationOfGrossFinancialLeverageRatioExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R308": {
     "role": "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail",
     "longName": "999298 - Disclosure - Capital Management and Solvency - Composition of Total Capitalization and Calculation of Gross Financial Leverage Ratio (Parenthetical) (Detail)",
     "shortName": "Capital Management and Solvency - Composition of Total Capitalization and Calculation of Gross Financial Leverage Ratio (Parenthetical) (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "parenthetical",
     "menuCat": "Details",
     "order": "308",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:SeniorLeverage",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCompositionOfCapitalizationAndCalculationOfGrossFinancialLeverageRatioExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_CurrencySwapContractMemberifrsfullClassesOfFinancialAssetsAxis",
      "name": "aeg:SeniorLeverage",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfCompositionOfCapitalizationAndCalculationOfGrossFinancialLeverageRatioExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R309": {
     "role": "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
     "longName": "999299 - Disclosure - Fair Value - Analysis of Assets and Liabilities Recorded at Fair Value on Recurring Basis by Level of Fair Value Hierarchy (Detail)",
     "shortName": "Fair Value - Analysis of Assets and Liabilities Recorded at Fair Value on Recurring Basis by Level of Fair Value Hierarchy (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "309",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssetsAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_RecurringFairValueMeasurementMemberifrsfullMeasurementAxis",
      "name": "ifrs-full:FinancialLiabilitiesAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R310": {
     "role": "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
     "longName": "999300 - Disclosure - Fair Value - Schedule of Transfers between Level 1 and Level II for Financial Assets and Liabilities Recorded at Fair Value on Recurring Basis (Detail)",
     "shortName": "Fair Value - Schedule of Transfers between Level 1 and Level II for Financial Assets and Liabilities Recorded at Fair Value on Recurring Basis (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "310",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_RecurringFairValueMeasurementMemberifrsfullMeasurementAxis",
      "name": "ifrs-full:TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_RecurringFairValueMeasurementMemberifrsfullMeasurementAxis",
      "name": "ifrs-full:TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R311": {
     "role": "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
     "longName": "999301 - Disclosure - Fair Value - Disclosures of Changes in Level 3 Assets (Detail)",
     "shortName": "Fair Value - Disclosures of Changes in Level 3 Assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "311",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_Level3OfFairValueHierarchyMemberifrsfullLevelsOfFairValueHierarchyAxis",
      "name": "aeg:DisposalOfABusinessFairValueMeasurementAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfChangesInFairValueMeasurementAssetsAndLiabilitiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R312": {
     "role": "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
     "longName": "999302 - Disclosure - Fair Value - Additional Information (Detail)",
     "shortName": "Fair Value - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "312",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_CorporateBondsMemberifrsfullClassesOfFinancialAssetsAxis_CreditSpreadMemberifrsfullFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskAxis_WeightedAverageMemberifrsfullRangeAxis",
      "name": "aeg:PercentageOfInterestRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_CorporateBondsMemberifrsfullClassesOfFinancialAssetsAxis_CreditSpreadMemberifrsfullFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskAxis_WeightedAverageMemberifrsfullRangeAxis",
      "name": "aeg:PercentageOfInterestRate",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R313": {
     "role": "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
     "longName": "999303 - Disclosure - Fair Value - Information about Significant Unobservable Inputs (Detail)",
     "shortName": "Fair Value - Information about Significant Unobservable Inputs (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "313",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssetsAtFairValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis_Level3OfFairValueHierarchyMemberifrsfullLevelsOfFairValueHierarchyAxis_NetAssetValueMemberifrsfullValuationTechniquesUsedInFairValueMeasurementAxis_SharesMemberifrsfullClassesOfAssetsAxis",
      "name": "ifrs-full:DescriptionOfValuationTechniquesUsedInFairValueMeasurementAssets",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesExplanaotry",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R314": {
     "role": "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
     "longName": "999304 - Disclosure - Fair Value - Carrying Values and Estimated Fair Values of Assets and Liabilities (Detail)",
     "shortName": "Fair Value - Carrying Values and Estimated Fair Values of Assets and Liabilities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "314",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DebtSecuritiesHeldAtAmortizedCostMemberifrsfullClassesOfFinancialInstrumentsAxis_FinancialAssetsAtAmortisedCostCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "true",
      "lang": null,
      "decimals": null,
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R315": {
     "role": "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
     "longName": "999305 - Disclosure - Fair Value - Summary of Carrying Amounts of Financial Assets and Financial Liabilities that are Classified as at Fair Value Through Profit or Loss (Detail)",
     "shortName": "Fair Value - Summary of Carrying Amounts of Financial Assets and Financial Liabilities that are Classified as at Fair Value Through Profit or Loss (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "315",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R316": {
     "role": "http://www.aegon.com/role/FairValueGainsAndLossesRecognizedInTheIncomeStatementOnFinancialAssetsAndFinancialLiabilitiesDetail",
     "longName": "999306 - Disclosure - Fair Value - Gains and Losses Recognized in the Income Statement on Financial Assets and Financial Liabilities (Detail)",
     "shortName": "Fair Value - Gains and Losses Recognized in the Income Statement on Financial Assets and Financial Liabilities (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "316",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:NetGainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfGainsOrLossesIncludedInProfitOrLossFinancialAssetsAndLiabilitiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:NetGainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfGainsOrLossesIncludedInProfitOrLossFinancialAssetsAndLiabilitiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R317": {
     "role": "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail",
     "longName": "999307 - Disclosure - Commitments and Contingencies - Summary of Commitments through Purchase and Sale Transactions of Investments (Detail)",
     "shortName": "Commitments and Contingencies - Summary of Commitments through Purchase and Sale Transactions of Investments (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "317",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_MortgageLoansCommitmentsMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedPurchaseAndSaleTransactionsOfInvestmentsExplanatory",
       "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R318": {
     "role": "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfOtherCommitmentsAndContingenciesDetail",
     "longName": "999308 - Disclosure - Commitments and Contingencies - Summary of Other Commitments and Contingencies (Detail)",
     "shortName": "Commitments and Contingencies - Summary of Other Commitments and Contingencies (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "318",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:OtherCommitmentsAndContingenciesThroughGuaranteesAssociatedWithSaleOfInvestments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
       "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:OtherCommitmentsAndContingenciesThroughGuaranteesAssociatedWithSaleOfInvestments",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
       "aeg:DisclosureOfCommitmentsAndContingenciesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R319": {
     "role": "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
     "longName": "999309 - Disclosure - Commitments and Contingencies - Additional Information (Detail)",
     "shortName": "Commitments and Contingencies - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "319",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PercentageOfNetWorth",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:PercentageOfNetWorth",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R320": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail",
     "longName": "999310 - Disclosure - Transfers of Financial Assets - Summary of Carrying Amount of Financial Assets (Detail)",
     "shortName": "Transfers of Financial Assets - Summary of Carrying Amount of Financial Assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "320",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_DebtSecuritiesMemberifrsfullClassesOfAssetsAxis_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "aeg:CarryingAmountOfTransferredAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DebtSecuritiesMemberifrsfullClassesOfAssetsAxis_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMemberifrsfullCategoriesOfFinancialAssetsAxis",
      "name": "aeg:CarryingAmountOfTransferredAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R321": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail",
     "longName": "999311 - Disclosure - Transfers of Financial Assets - Additional Information (Detail)",
     "shortName": "Transfers of Financial Assets - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "321",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:CollateralPledgedForDerivativeTransactions",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-8",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:CollateralPledgedForDerivativeTransactions",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-8",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R322": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail",
     "longName": "999312 - Disclosure - Transfers of Financial Assets - Summary of Securities Lending (Detail)",
     "shortName": "Transfers of Financial Assets - Summary of Securities Lending (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "322",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_SecuritiesLendingMemberifrsfullContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferAxis",
      "name": "aeg:CarryingAmountOfTransferredAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_SecuritiesLendingMemberifrsfullContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferAxis",
      "name": "aeg:CarryingAmountOfTransferredAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R323": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
     "longName": "999313 - Disclosure - Transfers of Financial Assets - Summary of Reverse Repurchase Agreements (Detail)",
     "shortName": "Transfers of Financial Assets - Summary of Reverse Repurchase Agreements (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "323",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ReverseRepurchaseAgreementsMemberifrsfullContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferAxis",
      "name": "aeg:CashPaidForReverseRepurchaseAgreements",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ReverseRepurchaseAgreementsMemberifrsfullContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferAxis",
      "name": "aeg:CashPaidForReverseRepurchaseAgreements",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R324": {
     "role": "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail",
     "longName": "999314 - Disclosure - Transfers of Financial Assets - Summary of Carrying Amount of Collateral Pledged and the Corresponding Amounts (Detail)",
     "shortName": "Transfers of Financial Assets - Summary of Carrying Amount of Collateral Pledged and the Corresponding Amounts (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "324",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_AssetsPledgedForGeneralAccountAndContingentLiabilitiesMemberifrsfullClassesOfContingentLiabilitiesAxis_RiskBearsByEntityMemberifrsfullRiskExposuresAxis",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfAssetsPledgedExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AssetsPledgedForGeneralAccountAndContingentLiabilitiesMemberifrsfullClassesOfContingentLiabilitiesAxis_RiskBearsByEntityMemberifrsfullRiskExposuresAxis",
      "name": "ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfAssetsPledgedExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R325": {
     "role": "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail",
     "longName": "999315 - Disclosure - Offsetting, Enforceable Master Netting Arrangements, and Similar Agreements - Summary of Financial Instruments Set Off in Statement of Financial Position (Detail)",
     "shortName": "Offsetting, Enforceable Master Netting Arrangements, and Similar Agreements - Summary of Financial Instruments Set Off in Statement of Financial Position (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "325",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_DerivativesMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_DerivativesMemberifrsfullClassesOfFinancialInstrumentsAxis",
      "name": "ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R326": {
     "role": "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
     "longName": "999316 - Disclosure - Companies and businesses acquired and divested - Additional Information (Detail)",
     "shortName": "Companies and businesses acquired and divested - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "326",
     "firstAnchor": {
      "contextRef": "PAsOn04_04_2023_RoyalLondonMemberifrsfullCounterpartiesAxis",
      "name": "aeg:NumberOfSaleOfHighNetWorthIndividualCustomers",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn04_04_2023_RoyalLondonMemberifrsfullCounterpartiesAxis",
      "name": "aeg:NumberOfSaleOfHighNetWorthIndividualCustomers",
      "unitRef": "Unit_pure",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R327": {
     "role": "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
     "longName": "999317 - Disclosure - Group Companies - Additional Information (Detail)",
     "shortName": "Group Companies - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "327",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AegonIndustrialFundManagementCoLtdMemberifrsfullSignificantInvestmentsInAssociatesAxis_AssetManagementSegmentMemberAEGSegmentAxis",
      "name": "ifrs-full:NameOfJointVenture",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_AegonIndustrialFundManagementCoLtdMemberifrsfullSignificantInvestmentsInAssociatesAxis_AssetManagementSegmentMemberAEGSegmentAxis",
      "name": "ifrs-full:NameOfJointVenture",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R328": {
     "role": "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
     "longName": "999318 - Disclosure - Group Companies - Additional Information - Associates (Detail)",
     "shortName": "Group Companies - Additional Information - Associates (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "328",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:PeriodOverWhichDirectorsMayBeAppointed",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:PeriodOverWhichDirectorsMayBeAppointed",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R329": {
     "role": "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
     "longName": "999319 - Disclosure - Related Party Transactions - Additional Information (Detail)",
     "shortName": "Related Party Transactions - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "329",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:TerminationBenefitsExpense",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "ifrs-full:TerminationBenefitsExpense",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:TerminationBenefitsExpense",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "ifrs-full:TerminationBenefitsExpense",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R330": {
     "role": "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail",
     "longName": "999320 - Disclosure - Related party transactions - Summary of Remuneration Expenses (Detail)",
     "shortName": "Related party transactions - Summary of Remuneration Expenses (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "330",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_NonExecutiveDirectorsMemberifrsfullDefinedBenefitPlansAxis",
      "name": "ifrs-full:KeyManagementPersonnelCompensation",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutInRemunerationExpensesWithTimeSpendOnBoardexplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_NonExecutiveDirectorsMemberifrsfullDefinedBenefitPlansAxis",
      "name": "ifrs-full:KeyManagementPersonnelCompensation",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-5",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutInRemunerationExpensesWithTimeSpendOnBoardexplanatoryTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R331": {
     "role": "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail",
     "longName": "999321 - Disclosure - Related Party Transactions - Common Shares Held by Non-Executive Directors (Detail)",
     "shortName": "Related Party Transactions - Common Shares Held by Non-Executive Directors (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "331",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:CommonSharesHeldByNonexecutiveDirectors",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:SharesInEntityHeldByNonExecutiveDirectorTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:CommonSharesHeldByNonexecutiveDirectors",
      "unitRef": "Unit_shares",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:SharesInEntityHeldByNonExecutiveDirectorTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R332": {
     "role": "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail",
     "longName": "999322 - Disclosure - Related Party Transactions - Related Party Transactions With Joint Ventures And Associates (Detail)",
     "shortName": "Related Party Transactions - Related Party Transactions With Joint Ventures And Associates (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "332",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_JointVenturesMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:Assets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:RelatedPartyTransactionsComponentsExplanatory",
       "ifrs-full:DisclosureOfRelatedPartyExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R333": {
     "role": "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail",
     "longName": "999323 - Disclosure - Loans to Group Companies - Summary of Loans to Group Companies (Detail)",
     "shortName": "Loans to Group Companies - Summary of Loans to Group Companies (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "333",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:LoansToSubsidiariesJointVenturesAndAssociates",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutLoansToSubsidiariesJointVenturesAndAssociatesExpplanatory",
       "aeg:DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2023_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:LoansToSubsidiariesJointVenturesAndAssociates",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutLoansToSubsidiariesJointVenturesAndAssociatesExpplanatory",
       "aeg:DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R334": {
     "role": "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
     "longName": "999324 - Disclosure - Non-current assets - Disclosure of Non Current Assets (Detail)",
     "shortName": "Non-current assets - Disclosure of Non Current Assets (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "334",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:RightofuseAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:RightofuseAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfNonCurrentAssets",
       "ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R335": {
     "role": "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail",
     "longName": "999325 - Disclosure - Receivables - Additional Information (Detail)",
     "shortName": "Receivables - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "335",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:IncomeTaxReceivables",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutReceivablesExplanatory",
       "aeg:DisclosureOfOtherAssetsAndReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:IncomeTaxReceivables",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "aeg:DisclosureOfReceivablesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R336": {
     "role": "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
     "longName": "999326 - Disclosure - Other Current Assets - Additional Information (Detail)",
     "shortName": "Other Current Assets - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "336",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:OtherCurrentAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AtFairValueMemberifrsfullMeasurementAxis_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:OtherCurrentAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "ifrs-full:DisclosureOfOtherAssetsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R337": {
     "role": "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
     "longName": "999327 - Disclosure - Long-Term Borrowings - Summary of Long-Term Borrowings (Detail)",
     "shortName": "Long-Term Borrowings - Summary of Long-Term Borrowings (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "337",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
       "ifrs-full:DisclosureOfBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:Borrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutLongTermBorrowingsExplanatory",
       "aeg:DisclosureOfLongTermBorrowingsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R338": {
     "role": "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail",
     "longName": "999328 - Disclosure - Other Non-Current Liabilities - Additional Information (Detail)",
     "shortName": "Other Non-Current Liabilities - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "338",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:LeaseLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:LeaseLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R339": {
     "role": "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail",
     "longName": "999329 - Disclosure - Current Liabilities - Additional Information (Detail)",
     "shortName": "Current Liabilities - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "339",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DerivativesWithNegativeValuesClassifiedUnderOtherLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:DerivativesWithNegativeValuesClassifiedUnderOtherLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfOtherLiabilitiesExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R340": {
     "role": "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
     "longName": "999330 - Disclosure - Number of Employees - Additional Information (Detail)",
     "shortName": "Number of Employees - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "340",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:NumberOfEmployees",
      "unitRef": "Unit_Employees",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfNumberOfEmployeesExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:NumberOfEmployees",
      "unitRef": "Unit_Employees",
      "xsiNil": "false",
      "lang": null,
      "decimals": "0",
      "ancestors": [
       "div",
       "div",
       "aeg:DisclosureOfInformationAboutNumberOfEmployeesTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R341": {
     "role": "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
     "longName": "999331 - Disclosure - Auditor's Remuneration - Summary of Accountants Remuneration (Detail)",
     "shortName": "Auditor's Remuneration - Summary of Accountants Remuneration (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "341",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_NLsrtStatementGeographicalAxis",
      "name": "ifrs-full:AuditorsRemunerationForAuditServices",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ifrs-full:DisclosureOfAuditorsRemunerationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_NLsrtStatementGeographicalAxis",
      "name": "ifrs-full:AuditorsRemunerationForAuditServices",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ifrs-full:DisclosureOfAuditorsRemunerationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R342": {
     "role": "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
     "longName": "999332 - Disclosure - Events After the Reporting Period - Additional Information (Detail)",
     "shortName": "Events After the Reporting Period - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "342",
     "firstAnchor": {
      "contextRef": "P06_30_2025To06_30_2025",
      "name": "aeg:StockRepurchasedDuringThePeriodValue",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn01_12_2026_MajorTreasuryShareTransactionsMemberifrsfullNonadjustingEventsAfterReportingPeriodAxis",
      "name": "aeg:StockRepurchasedDuringThePeriodValueAuthorized",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R343": {
     "role": "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
     "longName": "999333 - Disclosure - Proposal for Profit Appropriation - Additional Information (Detail)",
     "shortName": "Proposal for Profit Appropriation - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "343",
     "firstAnchor": {
      "contextRef": "P01_01_2025To06_30_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DividendsPaidOrdinarySharesPerShare",
      "unitRef": "Unit_EUR_per_Share",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To06_30_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DividendsPaidOrdinarySharesPerShare",
      "unitRef": "Unit_EUR_per_Share",
      "xsiNil": "false",
      "lang": null,
      "decimals": "2",
      "ancestors": [
       "div",
       "div",
       "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R344": {
     "role": "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
     "longName": "999334 - Disclosure - Proposal for Profit Appropriation - Summary of Proposal for Profit Appropriation (Detail)",
     "shortName": "Proposal for Profit Appropriation - Summary of Proposal for Profit Appropriation (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "344",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLossAttributableToOwnersOfParent",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:FinalDividendsProposed",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "aeg:DisclosureOfProposalProfitAppropriationExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R345": {
     "role": "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
     "longName": "999335 - Schedule - Schedule I - Summary of Investments Other than Investments in Related Parties (Detail)",
     "shortName": "Schedule I - Summary of Investments Other than Investments in Related Parties (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "345",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfInformationAboutCreditQualityExplanatory",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_AtCostMemberifrsfullMeasurementAxis",
      "name": "ifrs-full:FinancialAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfFinancialInvestmentsExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R346": {
     "role": "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail",
     "longName": "999336 - Schedule - Condensed income statement of Aegon Ltd. (Detail)",
     "shortName": "Condensed income statement of Aegon Ltd. (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "346",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLossAttributableToOwnersOfParent",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "aeg:NetResultGroupCompanies",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ScheduleOfCondensedBalanceSheetTableTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R347": {
     "role": "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
     "longName": "999337 - Schedule - Condensed Cash Flow Statement of Aegon Ltd. (Detail)",
     "shortName": "Condensed Cash Flow Statement of Aegon Ltd. (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "347",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "ifrs-full:ProfitLossBeforeTax",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:AdjustmentsForReconcileProfitLoss",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R348": {
     "role": "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
     "longName": "999338 - Schedule - Five-Year Schedule of Maturities of Debt (Detail)",
     "shortName": "Five-Year Schedule of Maturities of Debt (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "348",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:SubordinatedLiabilities",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:LongtermBorrowings",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R349": {
     "role": "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
     "longName": "999339 - Disclosure - Condensed Financial Information of Registrant - Additional Information (Detail)",
     "shortName": "Condensed Financial Information of Registrant - Additional Information (Detail)",
     "isDefault": "false",
     "groupType": "disclosure",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "349",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_BusinessCombinationsMemberifrsfullBusinessCombinationsAxis_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DividendsReceived",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-8",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025_BusinessCombinationsMemberifrsfullBusinessCombinationsAxis_ParentMemberifrsfullCategoriesOfRelatedPartiesAxis",
      "name": "ifrs-full:DividendsReceived",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-8",
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R350": {
     "role": "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
     "longName": "999340 - Schedule - Schedule III - Disclosure of Supplementary Insurance Information (Detail)",
     "shortName": "Schedule III - Disclosure of Supplementary Insurance Information (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "350",
     "firstAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:SupplementaryInsuranceInformationNetInvestmentIncomes",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "P01_01_2025To12_31_2025",
      "name": "aeg:SupplementaryInsuranceInformationNetInvestmentIncomes",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true,
      "unique": true
     }
    },
    "R351": {
     "role": "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail",
     "longName": "999341 - Schedule - Schedule IV - Summary of Reinsurance (Detail)",
     "shortName": "Schedule IV - Summary of Reinsurance (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "351",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "ifrs-full:ReinsuranceContractsHeldThatAreAssets",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2025",
      "name": "aeg:NetInsuranceAmount",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "aeg:DisclosureOfPremiumsNetOfReinsuranceExplanatory",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    },
    "R352": {
     "role": "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail",
     "longName": "999342 - Schedule - Schedule V - Valuation and Qualifying Accounts (Detail)",
     "shortName": "Schedule V - Valuation and Qualifying Accounts (Detail)",
     "isDefault": "false",
     "groupType": "",
     "subGroupType": "details",
     "menuCat": "Details",
     "order": "352",
     "firstAnchor": {
      "contextRef": "PAsOn12_31_2024",
      "name": "aeg:LossAllowancesAndReserves",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "first": true
     },
     "uniqueAnchor": {
      "contextRef": "PAsOn12_31_2022",
      "name": "aeg:LossAllowancesAndReserves",
      "unitRef": "Unit_EUR",
      "xsiNil": "false",
      "lang": null,
      "decimals": "-6",
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d29563d20f.htm",
      "unique": true
     }
    }
   },
   "tag": {
    "aeg_AAACreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AAACreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AAA Credit Grades [Member]",
        "terseLabel": "AAA [member]",
        "verboseLabel": "AAA Credit Grades [Member]",
        "documentation": "AAA credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AACreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AACreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AA credit grades [member]",
        "terseLabel": "AA [member]",
        "verboseLabel": "AA credit grades [member]",
        "documentation": "AA credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ACreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ACreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "A credit grades [member]",
        "terseLabel": "A [member]",
        "verboseLabel": "A credit grades [member]",
        "documentation": "A credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AEXMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AEXMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "AEX [member]",
        "terseLabel": "AEX [member]",
        "documentation": "AEX."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccountantsRemunerationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccountantsRemunerationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Accountants Remuneration [abstract]",
        "documentation": "Accountants remuneration."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccountantsRemunerationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccountantsRemunerationTable",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemuneration",
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/AuditorsRemunerationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accountants remuneration [table]",
        "terseLabel": "Accountants remuneration [table]",
        "documentation": "Accountants remuneration [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AccountingEstimatesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccountingEstimatesAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting estimates [axis]",
        "terseLabel": "Accounting estimates [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r131",
      "r453"
     ]
    },
    "ifrs-full_AccountingEstimatesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccountingEstimatesDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting estimates [domain]",
        "terseLabel": "Accounting estimates [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for monetary amounts in financial statements that are subject to measurement uncertainty. It also represents the standard value for the 'Accounting estimates' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r131",
      "r453"
     ]
    },
    "ifrs-full_AccountingProfit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccountingProfit",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting profit",
        "terseLabel": "Result before tax from continuing operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) for a period before deducting tax expense. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r6",
      "r459",
      "r460"
     ]
    },
    "aeg_AccrualAndDeferredIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccrualAndDeferredIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 32.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrual and Deferred Income",
        "terseLabel": "Accruals and deferred income",
        "documentation": "Accrual and deferred income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Accruals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Accruals",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 41.0
      },
      "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accruals",
        "terseLabel": "Accruals",
        "totalLabel": "On December 31"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities to pay for goods or services that have been received or supplied but have not been paid, invoiced or formally agreed with the supplier, including amounts due to employees."
       }
      }
     },
     "auth_ref": [
      "r953"
     ]
    },
    "aeg_AccrualsDeferredIncomeAndOtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccrualsDeferredIncomeAndOtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accruals Deferred Income and Other Liabilities",
        "terseLabel": "Other liabilities",
        "documentation": "Accruals deferred income and other liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccruedExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccruedExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail": {
       "parentTag": "ifrs-full_Accruals",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrued Expenses",
        "terseLabel": "Accrued expenses",
        "documentation": "Accrued expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccruedIncomes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccruedIncomes",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail": {
       "parentTag": "aeg_OtherAssetsAndReceivables",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfAccruedIncomeDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrued Incomes",
        "negatedLabel": "Accrued income",
        "documentation": "Accrued incomes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccruedInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccruedInterest",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfAccruedIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrued interest",
        "terseLabel": "Accrued interest",
        "documentation": "The amount of interest accrued but is not yet received."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccruedInterestAndRent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccruedInterestAndRent",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_TradeAndOtherReceivables",
       "weight": 1.0,
       "order": 51.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrued Interest And Rent",
        "terseLabel": "Accrued interest and rent",
        "documentation": "Accrued interest and rent."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AccruedInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AccruedInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail": {
       "parentTag": "ifrs-full_Accruals",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AccrualsSummaryOfAccrualsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accrued interests",
        "terseLabel": "Accrued interest",
        "documentation": "Accrued interests."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AccumulatedChangesInFairValueOfFinancialAssetsAttributableToChangesInCreditRiskOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedChangesInFairValueOfFinancialAssetsAttributableToChangesInCreditRiskOfFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated increase (decrease) in fair value of financial assets designated as measured at fair value through profit or loss, attributable to changes in credit risk of financial assets",
        "terseLabel": "Cumulative change in fair value attributable to changes in credit risk held on December 31"
       }
      },
      "en": {
       "role": {
        "documentation": "The accumulated increase (decrease) in the fair value of financial assets designated as measured at fair value through profit or loss that is attributable to changes in the credit risk of the assets determined either: (a) as the amount of change in their fair value that is not attributable to changes in market conditions that gave rise to market risk; or (b) using an alternative method that the entity believes more faithfully represents the amount of change in its fair value that is attributable to changes in the credit risk of the asset. [Refer: Credit risk [member]; Market risk [member]; Increase (decrease) in fair value of financial assets designated as measured at fair value through profit or loss, attributable to changes in credit risk of financial assets]"
       }
      }
     },
     "auth_ref": [
      "r350"
     ]
    },
    "ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedDepreciationAmortisationAndImpairmentMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated depreciation, amortisation and impairment [member]",
        "terseLabel": "Accumulated amortization, depreciation and impairment losses [member]"
       }
      }
     },
     "auth_ref": [
      "r13",
      "r16",
      "r89",
      "r105",
      "r112",
      "r465",
      "r505",
      "r514",
      "r519"
     ]
    },
    "ifrs-full_AccumulatedDepreciationAndAmortisationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedDepreciationAndAmortisationMember",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated depreciation and amortisation [member]"
       }
      }
     },
     "auth_ref": [
      "r16",
      "r906",
      "r922",
      "r928",
      "r929"
     ]
    },
    "ifrs-full_AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated\u00a0amount of fair value adjustments on the hedged item, Liabilities",
        "terseLabel": "Accumulated amount of fair value adjustments on the hedged item, Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as an asset. [Refer: Hedged items [domain]]"
       }
      }
     },
     "auth_ref": [
      "r310",
      "r553"
     ]
    },
    "ifrs-full_AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated fair value hedge adjustment on hedged item included in carrying amount, liabilities",
        "terseLabel": "Accumulated\u00a0amount of fair value adjustments on the hedged item, Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as a liability. [Refer: Hedged items [domain]]"
       }
      }
     },
     "auth_ref": [
      "r310",
      "r553"
     ]
    },
    "ifrs-full_AccumulatedImpairmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AccumulatedImpairmentMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accumulated impairment [member]",
        "terseLabel": "Expected credit loss [member]"
       }
      }
     },
     "auth_ref": [
      "r281",
      "r330",
      "r566",
      "r736",
      "r906",
      "r922",
      "r928",
      "r929"
     ]
    },
    "aeg_AcquirerAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AcquirerAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Acquirer [Axis]",
        "documentation": "Acquirer."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AcquirerDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AcquirerDomain",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Acquirer [Domain]",
        "documentation": "Acquirer."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AcquisitiondateFairValueOfTotalConsiderationTransferred",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consideration transferred, acquisition-date fair value",
        "verboseLabel": "Total consideration transferred"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r277",
      "r526"
     ]
    },
    "ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Acquisitions through business combinations, intangible assets and goodwill",
        "terseLabel": "Acquisitions through business combinations"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Intangible assets and goodwill]"
       }
      }
     },
     "auth_ref": [
      "r923"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfDiscountRates": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfDiscountRates",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of discount rates",
        "terseLabel": "Discount rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r915"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfDiscountRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfDiscountRatesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of discount rates [member]",
        "terseLabel": "Financial actuarial assumptions of discount rates by 100 basis points variation [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the discount rates used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r916"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflation": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfInflation",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of inflation",
        "terseLabel": "Price inflation"
       }
      },
      "en": {
       "role": {
        "documentation": "The expected rate of inflation that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r915"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of pension increases [member]",
        "terseLabel": "Actuarial assumption of expected rates of pension increases [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the expected rates of pension increases used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r916"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfSalaryIncreases",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of salary increases",
        "terseLabel": "Salary increase rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r915"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of expected rates of salary increases [member]",
        "terseLabel": "Finance actuarial assumption on salary increase rate by 100 basis points variation [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the expected rates of salary increases used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r916"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfMedicalCostTrendRates": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfMedicalCostTrendRates",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of medical cost trend rates",
        "terseLabel": "Health care trend rate"
       }
      },
      "en": {
       "role": {
        "documentation": "Medical cost trend rate used as significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r915"
     ]
    },
    "ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionOfMedicalCostTrendRatesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumption of medical cost trend rates [member]",
        "terseLabel": "Financial actuarial assumptions of health care trend rates by 100 bps variation [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the medical cost trend rates used as actuarial assumptions. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r916"
     ]
    },
    "aeg_ActuarialAssumptionOfPriceInflationRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ActuarialAssumptionOfPriceInflationRatesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial Assumption Of Price Inflation Rates [Member]",
        "terseLabel": "Financial actuarial assumptions of price inflation trend rates by 100 bps variation [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ActuarialAssumptionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionsAxis",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumptions [axis]",
        "terseLabel": "Actuarial assumptions [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r32"
     ]
    },
    "ifrs-full_ActuarialAssumptionsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialAssumptionsDomain",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial assumptions [domain]",
        "terseLabel": "Actuarial assumptions [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all actuarial assumptions. Actuarial assumptions are the entity\u2019s unbiased and mutually compatible best estimates of the demographic and financial variables that will determine the ultimate cost of providing post-employment benefits. It also represents the standard value for the 'Actuarial assumptions' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r32"
     ]
    },
    "ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial gains (losses) arising from changes in demographic assumptions, net defined benefit liability (asset)",
        "negatedLabel": "- Actuarial gains and losses arising from changes in demographic assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions that result in remeasurements of the net defined benefit liability (asset). Demographic assumptions deal with matters such as: (a) mortality; (b) rates of employee turnover, disability and early retirement; (c) the proportion of plan members with dependants who will be eligible for benefits; (d) the proportion of plan members who will select each form of payment option available under the plan terms; and (e) claim rates under medical plans. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r24"
     ]
    },
    "ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions",
        "negatedLabel": "- Actuarial gains and losses arising from changes in financial assumptions",
        "verboseLabel": "- Actuarial gains and losses arising from changes in financial assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r25"
     ]
    },
    "ifrs-full_ActuarialPresentValueOfPromisedRetirementBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ActuarialPresentValueOfPromisedRetirementBenefits",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Actuarial present value of promised retirement benefits",
        "negatedLabel": "Present value of the expected guaranteed premiums and management fees"
       }
      },
      "en": {
       "role": {
        "documentation": "The present value of the expected payments by a retirement benefit plan to existing and past employees, attributable to the service already rendered."
       }
      }
     },
     "auth_ref": [
      "r51"
     ]
    },
    "ecd_Additional402vDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "Additional402vDisclosureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional 402(v) Disclosure [Text Block]",
        "terseLabel": "Additional 402(v) Disclosure"
       }
      }
     },
     "auth_ref": [
      "r840"
     ]
    },
    "ifrs-full_AdditionalPaidinCapitalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionalPaidinCapitalMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional Paid-in Capital [Member]",
        "terseLabel": "Paid-in surplus [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for amounts received from issuance of the entity's shares in excess of nominal value and amounts received from other transactions involving the entity's stock or stockholders."
       }
      }
     },
     "auth_ref": [
      "r947"
     ]
    },
    "ifrs-full_AdditionalProvisionsOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionalProvisionsOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional provisions, other provisions",
        "terseLabel": "Additional provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additional other provisions made. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r83",
      "r500"
     ]
    },
    "ifrs-full_AdditionalRecognitionGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionalRecognitionGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additional recognition, goodwill",
        "terseLabel": "Goodwill on acquisition"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]]"
       }
      }
     },
     "auth_ref": [
      "r280",
      "r528"
     ]
    },
    "ifrs-full_AdditionsFromAcquisitionsInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionsFromAcquisitionsInvestmentProperty",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions from acquisitions, investment property",
        "terseLabel": "Additions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to investment property resulting from acquisitions. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r99",
      "r106"
     ]
    },
    "ifrs-full_AdditionsFromSubsequentExpenditureRecognisedAsAssetInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionsFromSubsequentExpenditureRecognisedAsAssetInvestmentProperty",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions from subsequent expenditure recognised as asset, investment property",
        "terseLabel": "Subsequent expenditure capitalized"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to investment property resulting from subsequent expenditure recognised as an asset. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r99",
      "r106"
     ]
    },
    "aeg_AdditionsOfInvestmentsInAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdditionsOfInvestmentsInAssociates",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions Of Investments In Associates",
        "terseLabel": "Additions",
        "documentation": "Additions of investments in associates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions other than through business combinations, intangible assets other than goodwill",
        "terseLabel": "Additions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r90",
      "r506"
     ]
    },
    "aeg_AdditionsToInvestmentsInJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdditionsToInvestmentsInJointVentures",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions to Investments in joint ventures",
        "terseLabel": "Additions",
        "documentation": "Additions to Investments in joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdditionsToRetainedEarnings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdditionsToRetainedEarnings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions To Retained Earnings",
        "terseLabel": "To be added to retained earnings",
        "documentation": "Additions to retained earnings."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdditionsToRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdditionsToRightofuseAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Additions to right-of-use assets",
        "terseLabel": "Additions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of additions to right-of-use assets. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r194",
      "r420"
     ]
    },
    "ifrs-full_AddressOfRegisteredOfficeOfEntity": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AddressOfRegisteredOfficeOfEntity",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Address of entity's registered office",
        "terseLabel": "Address of entity"
       }
      },
      "en": {
       "role": {
        "documentation": "The address at which the entity's office is registered."
       }
      }
     },
     "auth_ref": [
      "r436",
      "r596",
      "r619"
     ]
    },
    "dei_AddressTypeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AddressTypeDomain",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Address Type [Domain]",
        "documentation": "An entity may have several addresses for different purposes and this domain represents all such types."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AdjToCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Compensation Amount",
        "terseLabel": "Adjustment to Compensation, Amount"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "ecd_AdjToCompAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToCompAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Compensation [Axis]",
        "terseLabel": "Adjustment to Compensation:"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "ecd_AdjToNonPeoNeoCompFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToNonPeoNeoCompFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment to Non-PEO NEO Compensation Footnote [Text Block]",
        "terseLabel": "Adjustment to Non-PEO NEO Compensation Footnote"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "ecd_AdjToPeoCompFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AdjToPeoCompFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment To PEO Compensation, Footnote [Text Block]",
        "terseLabel": "Adjustment To PEO Compensation, Footnote"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "aeg_AdjustmentForIncomeFromJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentForIncomeFromJointVentures",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": -1.0,
       "order": 39.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment For Income From Joint Ventures",
        "negatedLabel": "Income from joint ventures",
        "documentation": "Adjustment for income from joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentForReleaseOfCashFlowHedgingReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentForReleaseOfCashFlowHedgingReserve",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": -1.0,
       "order": 36.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustment For Release Of Cash Flow Hedging Reserve",
        "negatedLabel": "Release of cash flow hedging reserve",
        "documentation": "Adjustment for release of cash flow hedging reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentsForAccruedExpensesAndOtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForAccruedExpensesAndOtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_ChangesInAccruals",
       "weight": 1.0,
       "order": 32.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Accrued Expenses And Other Liabilities",
        "negatedLabel": "Accrued expenses and other liabilities",
        "documentation": "Adjustments for accrued expenses and other liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentsForAccruedIncomeAndPrepayments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForAccruedIncomeAndPrepayments",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_ChangesInAccruals",
       "weight": -1.0,
       "order": 30.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Accrued Income And Prepayments",
        "terseLabel": "Accrued income and prepayments",
        "documentation": "Adjustments for accrued income and prepayments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForCurrentTaxOfPriorPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForCurrentTaxOfPriorPeriod",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for current tax of prior periods",
        "terseLabel": "Adjustments to prior years"
       }
      }
     },
     "auth_ref": [
      "r679",
      "r765"
     ]
    },
    "ifrs-full_AdjustmentsForDeferredTaxOfPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForDeferredTaxOfPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for deferred tax of prior periods",
        "verboseLabel": "Adjustments to prior years"
       }
      }
     },
     "auth_ref": [
      "r903"
     ]
    },
    "aeg_AdjustmentsForDepreciationAndAmortisation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForDepreciationAndAmortisation",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": 1.0,
       "order": 41.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Depreciation And Amortisation",
        "terseLabel": "Amortization and depreciation",
        "documentation": "Adjustments for depreciation and amortisation."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForFairValueGainsLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForFairValueGainsLosses",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": 1.0,
       "order": 35.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for fair value losses (gains)",
        "terseLabel": "Results from financial transactions",
        "verboseLabel": "Fair value adjustments"
       }
      }
     },
     "auth_ref": [
      "r932"
     ]
    },
    "ifrs-full_AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for impairment loss recognised in profit or loss, goodwill",
        "verboseLabel": "Adjustments for impairment loss recognized in profit or loss, goodwill"
       }
      }
     },
     "auth_ref": [
      "r933"
     ]
    },
    "ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": 1.0,
       "order": 40.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss",
        "terseLabel": "Impairment losses"
       }
      }
     },
     "auth_ref": [
      "r932"
     ]
    },
    "ifrs-full_AdjustmentsForIncreaseDecreaseInRepurchaseAgreementsAndCashCollateralOnSecuritiesLent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForIncreaseDecreaseInRepurchaseAgreementsAndCashCollateralOnSecuritiesLent",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": -1.0,
       "order": 26.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for increase (decrease) in repurchase agreements and cash collateral on securities lent",
        "terseLabel": "Net change in cash collateral"
       }
      },
      "en": {
       "role": {
        "documentation": "Adjustments for increase (decrease) in repurchase agreements and cash collateral on securities lent to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Repurchase agreements and cash collateral on securities lent; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r933"
     ]
    },
    "aeg_AdjustmentsForInsuranceContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForInsuranceContracts",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": -1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Insurance Contracts",
        "terseLabel": "Insurance contracts",
        "documentation": "Adjustments for insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentsForInvestmentContractsWithDiscretionaryParticipatingFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForInvestmentContractsWithDiscretionaryParticipatingFeatures",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": -1.0,
       "order": 21.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Investment Contracts With Discretionary Participating Features",
        "terseLabel": "Investment contracts with discretionary participation features",
        "documentation": "Adjustments for investment contracts with discretionary participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentsForInvestmentContractsWithoutDiscretionaryParticipatingFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForInvestmentContractsWithoutDiscretionaryParticipatingFeatures",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_ChangesInAccruals",
       "weight": -1.0,
       "order": 31.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Investment Contracts Without Discretionary Participating Features",
        "terseLabel": "Investment contracts without discretionary participation features",
        "documentation": "Adjustments for investment contracts without discretionary participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentsForNoncashItems": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForNoncashItems",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 33.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Noncash Items",
        "totalLabel": "Adjustments of non-cash items",
        "documentation": "Adjustments for non-cash items."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForReconcileProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForReconcileProfitLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments to reconcile profit (loss)",
        "terseLabel": "Adjustments"
       }
      }
     },
     "auth_ref": [
      "r116"
     ]
    },
    "aeg_AdjustmentsForReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForReinsuranceContractsHeld",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": -1.0,
       "order": 22.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Reinsurance Contracts Held",
        "terseLabel": "Reinsurance contracts held",
        "documentation": "Adjustments for reinsurance contracts held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AdjustmentsForResultsFromInsuranceReinsuranceAndInvestmentContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AdjustmentsForResultsFromInsuranceReinsuranceAndInvestmentContracts",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": -1.0,
       "order": 34.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments For Results From Insurance Reinsurance And Investment Contracts",
        "negatedLabel": "Results from (re)insurance contracts and investment contracts with discretionary participation features",
        "documentation": "Adjustments for results from insurance reinsurance and investment contracts."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AdjustmentsForUndistributedProfitsOfAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdjustmentsForUndistributedProfitsOfAssociates",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": -1.0,
       "order": 38.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments for undistributed profits of associates",
        "negatedLabel": "Income from associates"
       }
      }
     },
     "auth_ref": [
      "r932"
     ]
    },
    "ifrs-full_AdministrativeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AdministrativeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail": {
       "parentTag": "aeg_CommissionAndExpense",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Administrative expenses",
        "negatedLabel": "Administration expenses",
        "terseLabel": "Administration expenses"
       }
      }
     },
     "auth_ref": [
      "r47",
      "r677",
      "r783"
     ]
    },
    "aeg_AegDebtInstrumentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegDebtInstrumentAxis",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aeg Debt Instrument [Axis]",
        "documentation": "Aeg debt instrument [axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegDebtInstrumentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegDebtInstrumentDomain",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aeg Debt Instrument [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonAssetManagementHoldingBVMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonAssetManagementHoldingBVMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Asset Management Holding BV [member]",
        "terseLabel": "Aegon Asset Management Holding B.V. [member]",
        "documentation": "Aegon Asset Management Holding B.V."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonAssetManagementUkPlcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonAssetManagementUkPlcMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Asset Management UK plc [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonEmployeesNetherlandsBVMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonEmployeesNetherlandsBVMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Employees Netherlands BV [Member]",
        "terseLabel": "Aegon Employees Netherlands B.V. [member]",
        "documentation": "Aegon Employees Netherlands B.V. ."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonEspanaSAUMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonEspanaSAUMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Espana S A U [member]",
        "terseLabel": "Aegon Espana S.A.U [member]",
        "documentation": "Aegon Activos A.V., S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonGroupMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonGroupMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon group [member]",
        "terseLabel": "Aegon [member]",
        "documentation": "Aegon Group."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonIndustrialFundManagementCoLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonIndustrialFundManagementCoLtdMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Industrial Fund Management Co Ltd [member]",
        "verboseLabel": "AIFMC [member]",
        "terseLabel": "Aegon Industrial Fund Management Co Ltd [member]",
        "documentation": "Aegon Industrial Fund Management Co Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonInvestmentHoldingsLimitedGroupsSubsidiaryCompaniesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonInvestmentHoldingsLimitedGroupsSubsidiaryCompaniesMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Investment Holdings Limited Groups subsidiary companies [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonInvestmentManagementBVMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonInvestmentManagementBVMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Investment Management B- V- [member]",
        "terseLabel": "Aegon Investment Management B. V [member]",
        "documentation": "Aegon Investment Management B. V. [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonInvestmentSolutionsLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonInvestmentSolutionsLtdMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Investment Solutions Ltd [member]",
        "terseLabel": "Aegon Investment Solutions Ltd. [member]",
        "documentation": "Aegon Investment Solutions Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonInvestmentsLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonInvestmentsLtdMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Investments Ltd [Member]",
        "terseLabel": "Aegon Investments Ltd. [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonLifeInsuranceCoLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonLifeInsuranceCoLtdMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Life Insurance Co. ltd [member]",
        "terseLabel": "Aegon Life Insurance Co. ltd [member]",
        "documentation": "Aegon Life Insurance Co. ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonLtd.AndSubsidiariesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonLtd.AndSubsidiariesMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Ltd. And Subsidiaries [Member]",
        "terseLabel": "Aegon Ltd. and subsidiaries [member]",
        "documentation": "Aegon Ltd and subsidiaries."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonRiskMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Risk [Member]",
        "terseLabel": "Aegon Risk [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonSantanderGeneralesSegurosyReasegurosSAMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonSantanderGeneralesSegurosyReasegurosSAMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Santander Generales Segurosy Reaseguros S A [member]",
        "terseLabel": "Aegon Santander Generales Seguros y Reaseguros, S.A. [member]",
        "documentation": "Aegon Santander Generales Seguros y Reaseguros, S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonSantanderPortugalNaoVidaCompanhiadeSegurosSAMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonSantanderPortugalNaoVidaCompanhiadeSegurosSAMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Santander Portugal Nao Vida Companhiade Seguros S A [member]",
        "terseLabel": "Aegon Santander Portugal Nao Vida Companhiade Seguros S. A. [member]",
        "documentation": "Aegon Santander Portugal Vida - Companhia de Seguros de Vida S. A. [Member]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonSantanderPortugalVidaCompanhiaDeSegurosDeVidaSALisbonMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonSantanderPortugalVidaCompanhiaDeSegurosDeVidaSALisbonMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Santander Portugal Vida CompanhiaDe SegurosDe Vida SA Lisbon [member]",
        "terseLabel": "Aegon Santander Portugal Vida Companhia de Seguros de Vida SA Lisbon [member]",
        "documentation": "Aegon Santander Portugal Vida - Companhia de Segurosde Vida S. A."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonSantanderVidaSegurosyReasegurosSAMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonSantanderVidaSegurosyReasegurosSAMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon Santander Vida Segurosy Reaseguros S A [member]",
        "terseLabel": "Santander Vida Segurosy Reaseguros S. A. [member]",
        "documentation": "Aegon Santander Vida Segurosy Reaseguros S. A."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonTHTFLifeInsuranceCompanyLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonTHTFLifeInsuranceCompanyLtdMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon T H T F Life Insurance Company Ltd [member]",
        "terseLabel": "Aegon THTF Life Insurance Company Ltd [member]",
        "documentation": "Aegon THTF Life Insurance Company Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonUkMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonUkMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon UK [member]",
        "terseLabel": "Aegon United Kingdom [member]",
        "documentation": "Aegon UK."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonUsaInvestmentManagementLlcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonUsaInvestmentManagementLlcMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon USA Investment Management, LLC [member]",
        "terseLabel": "Aegon USA Investment Management, LLC [member]",
        "documentation": "Aegon USA Investment Management, LLC [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonUsaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonUsaMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon USA [member]",
        "terseLabel": "Aegon United States of America [member]",
        "documentation": "Aegon USA."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonUsaRealtyAdvisorsLlcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonUsaRealtyAdvisorsLlcMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegon USA Realty Advisors, LLC [member]",
        "terseLabel": "Aegon USA Realty Advisors, LLC [member]",
        "documentation": "Aegon USA Realty Advisors, LLC [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AegonsInsuranceGroupMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AegonsInsuranceGroupMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aegons Insurance Group [member]",
        "documentation": "Aegons insurance group."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AggregatedIndividuallyImmaterialJointVenturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AggregatedIndividuallyImmaterialJointVenturesMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregated individually immaterial joint ventures [member]",
        "terseLabel": "Other Joint ventures [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the aggregation of joint ventures that are individually immaterial. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r151"
     ]
    },
    "ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtChngPnsnValInSummryCompstnTblForAplblYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]",
        "terseLabel": "Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r898"
     ]
    },
    "ecd_AggtErrCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtErrCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Erroneous Compensation Amount",
        "terseLabel": "Aggregate Erroneous Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r811",
      "r822",
      "r832",
      "r865"
     ]
    },
    "ecd_AggtErrCompNotYetDeterminedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtErrCompNotYetDeterminedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Erroneous Compensation Not Yet Determined [Text Block]",
        "terseLabel": "Aggregate Erroneous Compensation Not Yet Determined"
       }
      }
     },
     "auth_ref": [
      "r814",
      "r825",
      "r835",
      "r868"
     ]
    },
    "ecd_AggtPnsnAdjsSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AggtPnsnAdjsSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Pension Adjustments Service Cost [Member]",
        "terseLabel": "Aggregate Pension Adjustments Service Cost"
       }
      }
     },
     "auth_ref": [
      "r899"
     ]
    },
    "aeg_AgreementToServiceAndAdministerExistingBusinessNumberOfCustomers": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AgreementToServiceAndAdministerExistingBusinessNumberOfCustomers",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Agreement to service and administer existing business, number of customers",
        "terseLabel": "Number of customers",
        "documentation": "Agreement to service and administer existing business, number of customers"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AgriculturalMortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AgriculturalMortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Agricultural Mortgage Loans [member]",
        "terseLabel": "Agricultural mortgage loans [member]",
        "documentation": "Agricultural mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AlbertBenchimolMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AlbertBenchimolMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Albert Benchimol [Member]",
        "documentation": "Albert Benchimol."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AllAdjToCompMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllAdjToCompMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Adjustments to Compensation [Member]",
        "terseLabel": "All Adjustments to Compensation"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "currency_AllCurrenciesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2025",
     "localname": "AllCurrenciesDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Currencies [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AllExecutiveCategoriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllExecutiveCategoriesMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Executive Categories [Member]",
        "terseLabel": "All Executive Categories"
       }
      }
     },
     "auth_ref": [
      "r860"
     ]
    },
    "ecd_AllIndividualsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllIndividualsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure",
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure",
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Individuals [Member]",
        "terseLabel": "All Individuals"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r860",
      "r869",
      "r873",
      "r881"
     ]
    },
    "ecd_AllTradingArrangementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AllTradingArrangementsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Trading Arrangements [Member]",
        "terseLabel": "All Trading Arrangements"
       }
      }
     },
     "auth_ref": [
      "r879"
     ]
    },
    "aeg_AllowanceForCreditLossStagesOfTransferAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AllowanceForCreditLossStagesOfTransferAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Allowance For Credit Loss Stages Of Transfer [Axis]",
        "terseLabel": "Allowance for credit loss stages of transfer [axis]",
        "documentation": "Allowance for credit loss stages of transfer."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AllowanceForCreditLossStagesOfTransferMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AllowanceForCreditLossStagesOfTransferMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Allowance For Credit Loss Stages Of Transfer [Member]",
        "terseLabel": "Allowance for credit loss stages of transfer [member]",
        "documentation": "Allowance for credit loss stages of transfer."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AllowanceForCreditLossesOnFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AllowanceForCreditLossesOnFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfMovementsInTheExpectedCreditLossesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Allowance For Credit Losses On Financial Assets",
        "terseLabel": "Allowance for credit losses of financial assets",
        "negatedPeriodStartLabel": "Beginning balance",
        "negatedPeriodEndLabel": "Ending balance",
        "documentation": "Allowance for credit losses on financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AllowanceRecognizedInProfitAndLossAccountForCreditLossOnFinancialAssetsDuringTheYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AllowanceRecognizedInProfitAndLossAccountForCreditLossOnFinancialAssetsDuringTheYear",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Allowance Recognized In Profit And Loss Account For Credit Loss On Financial Assets During The Year",
        "verboseLabel": "New financial assets originated or purchased",
        "documentation": "Allowance recognized in profit and loss account for credit loss on financial assets during the year."
       }
      }
     },
     "auth_ref": []
    },
    "dei_AmendmentFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AmendmentFlag",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amendment Flag",
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
       }
      }
     },
     "auth_ref": []
    },
    "srt_AmericasMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "AmericasMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Americas [Member]",
        "terseLabel": "Americas [member]",
        "verboseLabel": "Americas [Member]",
        "documentation": "Continents of North and South America."
       }
      }
     },
     "auth_ref": [
      "r940",
      "r941",
      "r942",
      "r943"
     ]
    },
    "aeg_AmortisationIntangibleAssetsOtherThanGoodwillRecognizedInProfitAndLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortisationIntangibleAssetsOtherThanGoodwillRecognizedInProfitAndLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortisation Intangible Assets Other Than Goodwill Recognized In Profit And Loss",
        "negatedTerseLabel": "Amortization through income statement",
        "documentation": "Amortisation intangible assets other than goodwill recognized in profit and loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationOfAcquisitionCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationOfAcquisitionCashFlows",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization Of Acquisition Cash Flows",
        "negatedLabel": "Amortization of acquisition cash flows",
        "documentation": "Amortization of acquisition cash flows."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationOfDeferredExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationOfDeferredExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization Of Deferred Expenses",
        "negatedLabel": "Amortization of deferred expenses",
        "documentation": "Amortization of deferred expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationOfDeferredExpensesAndFutureServicingRights": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationOfDeferredExpensesAndFutureServicingRights",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization Of Deferred Expenses And Future Servicing Rights",
        "terseLabel": "Amortization of deferred expenses and future servicing rights and other intangibles",
        "documentation": "Amortization of deferred expenses and future servicing rights."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationOfInsuranceAcquisitionCashFlowsPremiumAllocationApproach": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationOfInsuranceAcquisitionCashFlowsPremiumAllocationApproach",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization of Insurance Acquisition Cash Flows Premium Allocation Approach",
        "negatedLabel": "Amortization of acquisition cash flows PAA",
        "documentation": "Amortization of insurance acquisition cash flows premium allocation approach."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationOfOtherIntangibles": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationOfOtherIntangibles",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization Of Other Intangibles",
        "negatedLabel": "Amortization of other intangibles",
        "documentation": "Amortization of other intangibles."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationOfReconciliationOfDebtFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationOfReconciliationOfDebtFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization of reconciliation of debt from financing activities",
        "terseLabel": "Amortization",
        "documentation": "Amortization of reconciliation of debt from financing activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmortizationThroughIncomeStatement": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmortizationThroughIncomeStatement",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amortization through income statement",
        "negatedLabel": "Amortization through income statement",
        "documentation": "Amortization through income statement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmountArisingFromInsuranceContractsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmountArisingFromInsuranceContractsAxis",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amount arising from insurance contracts [Axis]",
        "documentation": "Amount arising from insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmountArisingFromInsuranceContractsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmountArisingFromInsuranceContractsDomain",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amount arising from insurance contracts [Domain]",
        "documentation": "Amount arising from insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmountOfDamagesAndInterestIdentified": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmountOfDamagesAndInterestIdentified",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amount of damages and interest identified",
        "terseLabel": "Amount of damages and interest",
        "documentation": "Amount of damages and interest identified."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AmountOfFinancialEconomicAssumptionOnFavorableImpact": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmountOfFinancialEconomicAssumptionOnFavorableImpact",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amount Of Financial Economic Assumption On Favorable Impact",
        "terseLabel": "Amount of financial economic assumption on favorable impact",
        "documentation": "Amount of financial economic assumption on favorable impact."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSaleMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amount recognised in other comprehensive income and accumulated in equity relating to non-current assets or disposal groups held for sale [member]",
        "terseLabel": "Reserve of discontinued operations held for sale [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity resulting from amounts that are recognised in other comprehensive income and accumulated in equity that relate to non-current assets or disposal groups held for sale. [Refer: Non-current assets or disposal groups classified as held for sale; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r286",
      "r726"
     ]
    },
    "aeg_AmountsAttributedToAcquisitionCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmountsAttributedToAcquisitionCashFlows",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amounts Attributed To Acquisition Cash Flows",
        "negatedLabel": "Amounts attributed to acquisition cash flows",
        "documentation": "Amounts attributed to acquisition cash flows."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AmountsPayableOnDemandThatAriseFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AmountsPayableOnDemandThatAriseFromContractsWithinScopeOfIFRS17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amounts payable on demand that arise from contracts within scope of IFRS 17",
        "terseLabel": "Amount payable\u00a0on demand"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts payable on demand that arise from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r258"
     ]
    },
    "aeg_AmountsPayableToGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AmountsPayableToGroupCompanies",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 34.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amounts Payable To Group Companies",
        "terseLabel": "Payables to group companies",
        "documentation": "Amounts payable to group companies."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amounts subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities",
        "terseLabel": "Collateral on liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts that are subject to an enforceable master netting arrangement or similar agreement and that are not set off against financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r293"
     ]
    },
    "aeg_AnnouncedSaleOfBusinessesTheResultsWerePreviouslyReportedInOperatingResults": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AnnouncedSaleOfBusinessesTheResultsWerePreviouslyReportedInOperatingResults",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Announced sale of businesses the results were previously reported in operating results",
        "terseLabel": "Results of businesses disposed during reporting periods",
        "documentation": "Announced sale of businesses the results were previously reported in operating results."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AnnuitiesCashgeneratingUnitMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AnnuitiesCashgeneratingUnitMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Annuities Cashgenerating Unit [member]",
        "terseLabel": "Annuities cash generating units [member]",
        "documentation": "Annuities cash generating unit."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AnnuitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AnnuitiesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Annuities [Member]",
        "terseLabel": "Annuities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ApartmentMortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ApartmentMortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Apartment Mortgage Loans [member]",
        "terseLabel": "Apartment mortgage loans [member]",
        "documentation": "Apartment mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ApplicableRateOfIncomeTaxAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ApplicableRateOfIncomeTaxAxis",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Applicable Rate Of Income Tax [Axis]",
        "terseLabel": "Applicable rate of income tax [axis]",
        "documentation": "Applicable rate of income tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ApplicableRateOfIncomeTaxMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ApplicableRateOfIncomeTaxMember",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Applicable Rate Of Income Tax [Member]",
        "terseLabel": "Applicable rate of income tax [member]",
        "documentation": "Applicable rate of income tax."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ApplicableTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ApplicableTaxRate",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Applicable tax rate",
        "terseLabel": "Weighted average applicable statutory tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The applicable income tax rate."
       }
      }
     },
     "auth_ref": [
      "r6",
      "r460"
     ]
    },
    "aeg_AsrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AsrMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "ASR [Member]",
        "terseLabel": "ASR [member]",
        "documentation": "ASR."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetForIncurredClaimsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetForIncurredClaimsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset For Incurred Claims [Member]",
        "terseLabel": "AFIC [member]",
        "documentation": "Asset for incurred claims."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetForRemainingCoverageExcludingLossRecoveryComponentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetForRemainingCoverageExcludingLossRecoveryComponentMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset For Remaining Coverage Excluding Loss Recovery Component [Member]",
        "terseLabel": "AFRC [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetManagementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetManagementMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset management [Member]",
        "terseLabel": "Asset management [member]",
        "documentation": "Assets management."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetManagementSegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetManagementSegmentMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset Management Segment [member]",
        "terseLabel": "Asset Management [member]",
        "documentation": "Asset management segment."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetbackedFinancingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetbackedFinancingsMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset-backed financings [member]",
        "terseLabel": "Asset backed [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for asset-backed financings."
       }
      }
     },
     "auth_ref": [
      "r706"
     ]
    },
    "ifrs-full_Assets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Assets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets",
        "totalLabel": "Total assets",
        "verboseLabel": "Total assets",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "definitionGuidance": "Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits."
       }
      }
     },
     "auth_ref": [
      "r175",
      "r176",
      "r183",
      "r364",
      "r368",
      "r581",
      "r582",
      "r638"
     ]
    },
    "ifrs-full_AssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets [Abstract]",
        "terseLabel": "Assets"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities classified as held for sale [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r286"
     ]
    },
    "aeg_AssetsAndLiabilitiesClassifiedAsHeldForSalesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsAndLiabilitiesClassifiedAsHeldForSalesAxis",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities classified as held for sales [Axis]",
        "terseLabel": "Assets and liabilities classified as held for sale [axis]",
        "documentation": "Assets and liabilities classified as held for sales."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetsAndLiabilitiesClassifiedAsHeldForSalesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsAndLiabilitiesClassifiedAsHeldForSalesDomain",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities classified as held for sales [Domain]",
        "documentation": "Assets and liabilities classified as held for sales"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets and liabilities not classified as held for sale [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for assets and liabilities that are not classified as held for sale. It also represents the standard value for the 'Assets and liabilities classified as held for sale' axis if no other member is used. [Refer: Non-current assets held for sale [member]; Liabilities included in disposal groups classified as held for sale; Disposal groups classified as held for sale [member]]"
       }
      }
     },
     "auth_ref": [
      "r286"
     ]
    },
    "aeg_AssetsBackedSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsBackedSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets backed securities [Member]",
        "verboseLabel": "Asset-backed securities [member]",
        "documentation": "Assets backed securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetsHeldToHedgeTrustPassThroughSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsHeldToHedgeTrustPassThroughSecurities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets Held To Hedge Trust Pass Through Securities",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "documentation": "Assets held to hedge trust pass through securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetsHeldToHedgeTrustPassThroughSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsHeldToHedgeTrustPassThroughSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets held to hedge Trust pass through securities [member]",
        "terseLabel": "Assets held to hedge Trust pass-through securities [Member]",
        "documentation": "Assets held to hedge Trust pass-through securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetsManagementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsManagementMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets Management [member]",
        "terseLabel": "Asset management [member]",
        "documentation": "Asset management."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetsNotRatedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsNotRatedMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets Not Rated [member]",
        "terseLabel": "Assets not rated [member]",
        "documentation": "Assets not rated."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsOfBenefitPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsOfBenefitPlan",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets of benefit plan",
        "totalLabel": "On December 31"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets held by retirement benefit plans. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r43"
     ]
    },
    "aeg_AssetsPledgedForGeneralAccountAndContingentLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsPledgedForGeneralAccountAndContingentLiabilitiesMember",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets Pledged For General Account And Contingent Liabilities [member]",
        "terseLabel": "Assets pledged for general account and contingent liabilities [member]",
        "documentation": "Assets pledged for general account and contingent liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AssetsPledgedForRepurchaseAgreementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssetsPledgedForRepurchaseAgreementsMember",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets Pledged For Repurchase Agreements [member]",
        "documentation": "Assets pledged for repurchase agreements."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AssetsSoldOrRepledgedAsCollateralAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssetsSoldOrRepledgedAsCollateralAtFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateral sold or repledged in absence of default by owner of collateral, at fair value",
        "terseLabel": "Fair value of non-cash collateral received",
        "verboseLabel": "Fair value of non-cashcollateral received"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of collateral sold or repledged that was permitted to be sold or repledged in the absence of default by the owner of the collateral. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r296"
     ]
    },
    "ifrs-full_AssociatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AssociatesMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all associates [member]",
        "terseLabel": "ASR [member]",
        "verboseLabel": "Associates [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the entities over which the investor has significant influence."
       }
      }
     },
     "auth_ref": [
      "r39",
      "r56",
      "r61",
      "r172",
      "r484",
      "r576"
     ]
    },
    "aeg_AssumptionChangesThatRelateToAReversalOfUnderlyingOnerousContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AssumptionChangesThatRelateToAReversalOfUnderlyingOnerousContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assumption Changes that Relate to a Reversal of Underlying Onerous Contracts",
        "terseLabel": "Assumption changes that relate to (a reversal of) underlying onerous contracts",
        "documentation": "Assumption changes that relate to a reversal of underlying onerous contracts."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AtCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AtCostMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "At cost [member]",
        "terseLabel": "Cost [member]"
       }
      }
     },
     "auth_ref": [
      "r57",
      "r62",
      "r98",
      "r111",
      "r113",
      "r487",
      "r490",
      "r518"
     ]
    },
    "ifrs-full_AtFairValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AtFairValueMember",
     "presentation": [
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "At fair value [member]",
        "terseLabel": "Fair value [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for measurement based on fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date."
       }
      }
     },
     "auth_ref": [
      "r98",
      "r111",
      "r150",
      "r175",
      "r518",
      "r578",
      "r581"
     ]
    },
    "aeg_AtFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AtFairValueThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "At fair Value Through Other Comprehensive Income",
        "terseLabel": "At fair value through other comprehensive income",
        "documentation": "At fair value through other comprehensive income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AtosBPSLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AtosBPSLtdMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Atos BPS Ltd [member]",
        "documentation": "Atos BPS Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "dei_AuditorFirmId": {
     "xbrltype": "nonemptySequenceNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditorFirmId",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Firm ID",
        "documentation": "PCAOB issued Audit Firm Identifier"
       }
      }
     },
     "auth_ref": [
      "r794",
      "r795",
      "r818"
     ]
    },
    "dei_AuditorLocation": {
     "xbrltype": "internationalNameItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditorLocation",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Location"
       }
      }
     },
     "auth_ref": [
      "r794",
      "r795",
      "r818"
     ]
    },
    "dei_AuditorName": {
     "xbrltype": "internationalNameItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "AuditorName",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Name"
       }
      }
     },
     "auth_ref": [
      "r794",
      "r795",
      "r818"
     ]
    },
    "ifrs-full_AuditorsRemuneration": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AuditorsRemuneration",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor's remuneration",
        "totalLabel": "Total"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_AuditorsRemunerationForAuditServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AuditorsRemunerationForAuditServices",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail": {
       "parentTag": "ifrs-full_AuditorsRemuneration",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor's remuneration for audit services",
        "terseLabel": "Audit fees"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_AuditorsRemunerationForOtherServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AuditorsRemunerationForOtherServices",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail": {
       "parentTag": "ifrs-full_AuditorsRemuneration",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor's remuneration for other services",
        "terseLabel": "Audit-related service fees"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_AuditorsRemunerationForTaxServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AuditorsRemunerationForTaxServices",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail": {
       "parentTag": "ifrs-full_AuditorsRemuneration",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor's remuneration for tax services",
        "terseLabel": "Tax"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_AuditorsRemunerationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AuditorsRemunerationLineItems",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemuneration",
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/AuditorsRemunerationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditors Remuneration [line items]",
        "terseLabel": "Auditors remuneration [Line Items]",
        "documentation": "Auditors remuneration."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AustriaGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AustriaGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Austria Government bonds [member]",
        "terseLabel": "Austria government bonds [member]",
        "documentation": "Austria government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AuthorizedCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AuthorizedCapital",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Authorized Capital",
        "terseLabel": "Authorized share capital",
        "documentation": "Authorized capital."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_AvailableIndefinitelyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "AvailableIndefinitelyMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Available Indefinitely [member]",
        "terseLabel": "Indefinitely [member]",
        "documentation": "Available indefinitely."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_AverageEffectiveTaxRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AverageEffectiveTaxRate",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Average effective tax rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The tax expense (income) divided by the accounting profit. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r6",
      "r460"
     ]
    },
    "ifrs-full_AverageForeignExchangeRate": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AverageForeignExchangeRate",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Average foreign exchange rate",
        "verboseLabel": "Average exchange rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_AverageRateOfHedgingInstrument": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "AverageRateOfHedgingInstrument",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Average rate of hedging instrument",
        "verboseLabel": "Average fixed interest rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The average rate of a hedging instrument. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r304"
     ]
    },
    "ecd_AwardExrcPrice": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardExrcPrice",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Exercise Price",
        "terseLabel": "Exercise Price"
       }
      }
     },
     "auth_ref": [
      "r876"
     ]
    },
    "ecd_AwardGrantDateFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardGrantDateFairValue",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Grant Date Fair Value",
        "terseLabel": "Fair Value as of Grant Date"
       }
      }
     },
     "auth_ref": [
      "r877"
     ]
    },
    "ecd_AwardTmgDiscLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgDiscLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Disclosures [Line Items]",
        "terseLabel": "Award Timing Disclosures"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "ecd_AwardTmgHowMnpiCnsdrdTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgHowMnpiCnsdrdTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing, How MNPI Considered [Text Block]",
        "terseLabel": "Award Timing, How MNPI Considered"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "ecd_AwardTmgMethodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgMethodTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Method [Text Block]",
        "terseLabel": "Award Timing Method"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "ecd_AwardTmgMnpiCnsdrdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgMnpiCnsdrdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing MNPI Considered [Flag]",
        "terseLabel": "Award Timing MNPI Considered"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "ecd_AwardTmgMnpiDiscTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgMnpiDiscTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing MNPI Disclosure [Text Block]",
        "terseLabel": "Award Timing MNPI Disclosure"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "ecd_AwardTmgPredtrmndFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardTmgPredtrmndFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Timing Predetermined [Flag]",
        "terseLabel": "Award Timing Predetermined"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "us-gaap_AwardTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "AwardTypeAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Type [Axis]",
        "terseLabel": "Award Type"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_AwardUndrlygSecuritiesAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardUndrlygSecuritiesAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Award Underlying Securities Amount",
        "terseLabel": "Underlying Securities"
       }
      }
     },
     "auth_ref": [
      "r875"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardsCloseToMnpiDiscIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r874"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardsCloseToMnpiDiscTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures [Table]",
        "terseLabel": "Awards Close in Time to MNPI Disclosures"
       }
      }
     },
     "auth_ref": [
      "r873"
     ]
    },
    "ecd_AwardsCloseToMnpiDiscTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "AwardsCloseToMnpiDiscTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Awards Close in Time to MNPI Disclosures [Table Text Block]",
        "terseLabel": "Awards Close in Time to MNPI Disclosures, Table"
       }
      }
     },
     "auth_ref": [
      "r873"
     ]
    },
    "aeg_BBBCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BBBCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "BBB credit grades [member]",
        "terseLabel": "BBB [member]",
        "verboseLabel": "BBB credit grades [member]",
        "documentation": "BBB credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BBCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BBCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "BB credit grades [member]",
        "terseLabel": "BB [member]",
        "verboseLabel": "BB credit grades [member]",
        "documentation": "BB credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "B Credit Grades [member]",
        "terseLabel": "B [member]",
        "verboseLabel": "B Credit Grades [member]",
        "documentation": "B credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BOrLowerCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BOrLowerCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "B or lower credit grades [member]",
        "terseLabel": "B or lower [member]",
        "documentation": "B or lower credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BackingDirectParticipationInsuranceContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BackingDirectParticipationInsuranceContractsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Backing Direct Participation Insurance Contracts [Member]",
        "terseLabel": "Backing direct participation insurance contracts [member]",
        "documentation": "Backing direct participation insurance contracts member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BackingDirectParticipationInvestmentContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BackingDirectParticipationInvestmentContractsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Backing Direct Participation Investment Contracts [Member]",
        "terseLabel": "Backing direct participation investment contracts\u00a0[member]",
        "documentation": "Backing direct participation investment contracts\u00a0member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BackingInsuranceContractsWithoutDirectParticipationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BackingInsuranceContractsWithoutDirectParticipationMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Backing Insurance Contracts Without Direct Participation [Member]",
        "terseLabel": "Backing insurance contracts without direct participation [member]",
        "documentation": "Backing insurance contracts without direct participation member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BandhanFinancialHoldingsLimitedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BandhanFinancialHoldingsLimitedMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bandhan Financial Holdings Limited [Member]",
        "terseLabel": "Bandhan Financial Holdings Limited [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BaseScenarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BaseScenarioMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Base Scenario [Member]",
        "terseLabel": "Base [member]",
        "documentation": "Base scenario."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BasicEarningsLossPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BasicEarningsLossPerShare",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings (loss) per share",
        "verboseLabel": "Basic earnings per common share (EUR per share)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator)."
       }
      }
     },
     "auth_ref": [
      "r64",
      "r65"
     ]
    },
    "aeg_BasicEarningsPerCommonShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasicEarningsPerCommonShare",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic Earnings Per Common Share",
        "terseLabel": "Basic earnings per common share",
        "documentation": "Basic earnings per common share."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BasicEarningsPerCommonShareB": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasicEarningsPerCommonShareB",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic Earnings Per Common Share B",
        "terseLabel": "Basic earnings per common share B",
        "documentation": "Basic earnings per common share B."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BasicEarningsPerCommonShareBFromContinuingOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasicEarningsPerCommonShareBFromContinuingOperations",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic Earnings Per Common Share B From Continuing Operations",
        "terseLabel": "Basic earnings per common share B from continuing operations",
        "documentation": "Basic earnings per common share B from continuing operations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BasicEarningsPerCommonShareFromContinuingOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasicEarningsPerCommonShareFromContinuingOperations",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic Earnings Per Common Share From Continuing Operations",
        "terseLabel": "Basic earnings per common share from continuing operations",
        "documentation": "Basic earnings per common share from continuing operations."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BasicEarningsPerShareAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BasicEarningsPerShareAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Basic earnings per share [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BasisAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasisAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basis [Axis]",
        "documentation": "Basis."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BasisDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasisDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basis [Domain]",
        "documentation": "Basis."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BasisPoints": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BasisPoints",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Basis Points",
        "terseLabel": "Basis points",
        "documentation": "Basis points."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BelgiumGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BelgiumGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Belgium Government bonds [member]",
        "terseLabel": "Belgium government bonds [member]",
        "documentation": "Belgiumg government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BelowACreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BelowACreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Below A Credit Grades [member]",
        "terseLabel": "Below A [member]",
        "documentation": "Below A Credit Grade."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BenefitsPaidOrPayable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BenefitsPaidOrPayable",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Benefits paid or payable",
        "negatedLabel": "Benefits paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of benefits paid or payable for retirement benefit plans."
       }
      }
     },
     "auth_ref": [
      "r46"
     ]
    },
    "aeg_BestEstimateLiabilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BestEstimateLiabilityMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Best Estimate Liability [Member]",
        "terseLabel": "BEL [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BifurcatedEmbeddedDerivativesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BifurcatedEmbeddedDerivativesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bifurcated Embedded Derivatives [member]",
        "terseLabel": "Bifurcated embedded derivatives [member]",
        "documentation": "Bifurcated embedded derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BondsAtAmortisedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BondsAtAmortisedCost",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bonds At Amortised Cost",
        "terseLabel": "Amortized cost, Bonds",
        "documentation": "Bonds at amortised cost."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BondsCapitalTrustPassThroughSecuritiesAndNotesIssuedUnderCommercialPaperProgram": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BondsCapitalTrustPassThroughSecuritiesAndNotesIssuedUnderCommercialPaperProgram",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bonds Capital Trust Pass Through Securities And Notes Issued Under Commercial Paper Program",
        "terseLabel": "Securities and notes issued under commercial paper program",
        "documentation": "Bonds capital trust pass through securities and notes issued under commercial paper program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BookValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BookValueMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Book Value [member]",
        "terseLabel": "Book value [member]",
        "documentation": "Book value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Borrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Borrowings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings",
        "terseLabel": "Borrowings",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "verboseLabel": "Borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of outstanding funds that the entity is obligated to repay."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_Borrowings1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Borrowings1Member",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings 1 [member]",
        "terseLabel": "Borrowings [member]",
        "documentation": "Borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsAdjustmentToInterestRateBasis": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsAdjustmentToInterestRateBasis",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, adjustment to interest rate basis",
        "verboseLabel": "Borrowings, margin interest rate",
        "terseLabel": "Basis point"
       }
      },
      "en": {
       "role": {
        "documentation": "The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "aeg_BorrowingsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BorrowingsAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings at fair value",
        "verboseLabel": "Fair value of borrowings",
        "documentation": "Borrowings at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsByNameAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsByNameAxis",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/BorrowingsTables",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings by name [axis]",
        "terseLabel": "Borrowings by name [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "ifrs-full_BorrowingsByNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsByNameDomain",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/BorrowingsTables",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings by name [domain]",
        "terseLabel": "Borrowings by name [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all borrowings when disaggregated by name. It also represents the standard value for the 'Borrowings by name' axis if no other member is used. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "aeg_BorrowingsCouponDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BorrowingsCouponDate",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings coupon date",
        "terseLabel": "Coupon date",
        "documentation": "Borrowings coupon date."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BorrowingsCouponRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BorrowingsCouponRate",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, coupon rate",
        "terseLabel": "Coupon rate",
        "documentation": "Borrowings, coupon rate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsInterestRate",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, interest rate",
        "terseLabel": "Basis point interest rate",
        "positiveLabel": "Interest rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The interest rate on borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "ifrs-full_BorrowingsInterestRateBasis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsInterestRateBasis",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, interest rate basis",
        "verboseLabel": "Borrowings, interest rate basis",
        "terseLabel": "Coupon rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "aeg_BorrowingsIssuedYear": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BorrowingsIssuedYear",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings Issued Year",
        "terseLabel": "Borrowings issued year",
        "documentation": "Borrowings issued year."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsMaturity": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsMaturity",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, maturity",
        "terseLabel": "Borrowing maturity",
        "verboseLabel": "Year of next call"
       }
      },
      "en": {
       "role": {
        "documentation": "The maturity of borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "aeg_BorrowingsMaturityYear": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BorrowingsMaturityYear",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings maturity year",
        "terseLabel": "Borrowings maturity year",
        "documentation": "Borrowings maturity year."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BorrowingsOriginalCurrency": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BorrowingsOriginalCurrency",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, original currency",
        "terseLabel": "Borrowings currency",
        "verboseLabel": "Borrowings original currency"
       }
      },
      "en": {
       "role": {
        "documentation": "The currency in which the borrowings are denominated. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "aeg_BorrowingsYearOfNextCall": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BorrowingsYearOfNextCall",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Borrowings, year of next call",
        "terseLabel": "Year of next call",
        "documentation": "Borrowings, year of next call"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BottomOfRangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BottomOfRangeMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Bottom of range [member]",
        "terseLabel": "Bottom of range [member]",
        "verboseLabel": "Bottom of range [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the bottom of a range."
       }
      }
     },
     "auth_ref": [
      "r123",
      "r187",
      "r248",
      "r274",
      "r445",
      "r711",
      "r713",
      "r938"
     ]
    },
    "aeg_BrokerQuoteMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BrokerQuoteMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Broker quote [member]",
        "terseLabel": "Broker quote [member]",
        "documentation": "Broker quote."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BuildingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BuildingsMember",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Buildings [member]",
        "terseLabel": "Buildings [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of plant, property and equipment representing depreciable buildings and similar structures for use in operations. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r905"
     ]
    },
    "aeg_BusinessAcquirerAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BusinessAcquirerAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Acquirer [Axis]",
        "documentation": "Business acquirer."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_BusinessAcquirerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BusinessAcquirerMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Acquirer [Member]",
        "documentation": "Business acquirer."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_BusinessCombinationsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BusinessCombinationsAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business combinations [axis]",
        "terseLabel": "Business combinations [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r278",
      "r527"
     ]
    },
    "ifrs-full_BusinessCombinationsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BusinessCombinationsDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business combinations [domain]",
        "terseLabel": "Business combinations [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Business combinations' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r278",
      "r282",
      "r527"
     ]
    },
    "ifrs-full_BusinessCombinationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "BusinessCombinationsMember",
     "presentation": [
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business combinations [member]",
        "terseLabel": "Business combinations [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for transactions or other events in which an acquirer obtains control of one or more businesses. Transactions sometimes referred to as 'true mergers' or 'mergers of equals' are also business combinations as that term is used in IFRS 3."
       }
      }
     },
     "auth_ref": [
      "r278",
      "r527"
     ]
    },
    "dei_BusinessContactMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "BusinessContactMember",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Contact [Member]",
        "documentation": "Business contact for the entity"
       }
      }
     },
     "auth_ref": [
      "r795",
      "r818"
     ]
    },
    "aeg_BusinessSoldBusinessCombination": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "BusinessSoldBusinessCombination",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business sold, business combination",
        "terseLabel": "Business sold, business combination",
        "documentation": "Business sold, business combination."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CCCAndLowerCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CCCAndLowerCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "CCC And Lower Credit Grades [Member]",
        "terseLabel": "CCC and lower [member]",
        "documentation": "CCC and lower credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CCCOrLowerCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CCCOrLowerCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "CCC Or Lower Credit Grades [member]",
        "terseLabel": "CCC or lower [member]",
        "verboseLabel": "CCC Or Lower Credit Grades [member]",
        "documentation": "CCC or lower credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CapitalContribution": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CapitalContribution",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital Contribution",
        "terseLabel": "Capital contributions",
        "documentation": "Capital contribution."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CapitalContributionsAndAcquisitions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CapitalContributionsAndAcquisitions",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital contributions and acquisitions",
        "terseLabel": "Capital contributions and acquisitions",
        "documentation": "Capital contributions and acquisitions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CapitalFundingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CapitalFundingMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital funding [member]",
        "terseLabel": "Capital funding [member]",
        "documentation": "Capital funding."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CapitalGoodsAndOtherIndustryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CapitalGoodsAndOtherIndustryMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital Goods And Other Industry [Member]",
        "terseLabel": "Capital goods and other industry [member]",
        "documentation": "Capital Goods And Other Industry."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CapitalInjectionForReinsuranceTransaction": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CapitalInjectionForReinsuranceTransaction",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital Injection For Reinsurance Transaction",
        "documentation": "Capital injection for reinsurance transaction."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CapitalRequirementSolvencyIIRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CapitalRequirementSolvencyIIRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital requirement, solvency II ratio",
        "terseLabel": "Capital requirements on a solo-level, Solvency II ratio",
        "documentation": "Capital requirement, solvency II ratio."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CapitalRequirementsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CapitalRequirementsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital requirements [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r617"
     ]
    },
    "ifrs-full_CapitalRequirementsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CapitalRequirementsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital requirements [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for capital requirements that the entity is subject to. It also represents the standard value for the 'Capital requirements' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r617"
     ]
    },
    "ifrs-full_CapitalReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CapitalReserve",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_Capitalisation",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capital reserve",
        "totalLabel": "Adjusted valuation equity"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the capital reserves."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_Capitalisation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Capitalisation",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Capitalisation",
        "totalLabel": "Total capitalization",
        "documentation": "Capitalisation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CarolineRamsayMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CarolineRamsayMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Caroline Ramsay [Member]",
        "documentation": "Caroline Ramsay."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]",
        "terseLabel": "Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r13",
      "r14",
      "r89",
      "r91",
      "r104",
      "r105",
      "r110",
      "r111",
      "r112",
      "r281",
      "r330",
      "r331",
      "r465",
      "r466",
      "r505",
      "r507",
      "r513",
      "r514",
      "r517",
      "r518",
      "r519",
      "r529",
      "r566",
      "r568"
     ]
    },
    "ifrs-full_CarryingAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CarryingAmountMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying amount [member]",
        "terseLabel": "Carrying amount [member]"
       }
      }
     },
     "auth_ref": [
      "r14",
      "r91",
      "r104",
      "r110",
      "r111",
      "r281",
      "r330",
      "r331",
      "r466",
      "r507",
      "r513",
      "r517",
      "r518",
      "r529",
      "r566",
      "r568"
     ]
    },
    "aeg_CarryingAmountOfAssociatedLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CarryingAmountOfAssociatedLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying Amount Of Associated Liabilities",
        "terseLabel": "Carrying amount of associated liabilities",
        "documentation": "Carrying amount of associated liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CarryingAmountOfTheRelatedPortfoliosContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CarryingAmountOfTheRelatedPortfoliosContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying Amount Of The Related Portfolios Contracts",
        "terseLabel": "Carrying amount",
        "documentation": "Carrying amount of the related portfolios contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CarryingAmountOfTransferredAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CarryingAmountOfTransferredAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Carrying Amount Of Transferred Assets",
        "terseLabel": "Carrying amount of transferred assets",
        "verboseLabel": "Carrying amount of transferred financial assets",
        "documentation": "Carrying amount of transferred assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Cash": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Cash",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail": {
       "parentTag": "ifrs-full_CashAndCashEquivalents",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash",
        "terseLabel": "Cash at bank and in hand"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash on hand and demand deposits. [Refer: Cash on hand]"
       }
      }
     },
     "auth_ref": [
      "r934"
     ]
    },
    "ifrs-full_CashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashAndCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 46.0
      },
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and cash equivalents",
        "terseLabel": "Cash and cash equivalents",
        "periodStartLabel": "Net cash and cash equivalents at the beginning of the year",
        "periodEndLabel": "Net cash and cash equivalents at the end of the year",
        "totalLabel": "On December 31"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r124",
      "r162",
      "r446",
      "r630"
     ]
    },
    "ifrs-full_CashAndCashEquivalentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashAndCashEquivalentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash and cash equivalents [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CashBasedVariableCompensationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashBasedVariableCompensationMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash Based Variable Compensation [Member]",
        "verboseLabel": "Cash based variable compensation [member]",
        "documentation": "Cash based variable compensation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CashCapitalMaintained": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashCapitalMaintained",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash Capital Maintained",
        "verboseLabel": "Cash capital maintained",
        "documentation": "Cash capital maintained."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CashCollateral": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashCollateral",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash collateral",
        "negatedLabel": "Cash collateral",
        "documentation": "Cash collateral."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CashCollateralHeldOnDerivativeInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashCollateralHeldOnDerivativeInstruments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash Collateral Held On Derivative Instruments",
        "terseLabel": "Cash collateral on derivative transactions",
        "documentation": "Cash collateral held on derivative instruments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash collateral pledged subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities",
        "verboseLabel": "Cash collateral received (excluding surplus collateral)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash collateral pledged that is subject to an enforceable master netting arrangement or similar agreement and that is not set off against financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r728",
      "r754"
     ]
    },
    "ifrs-full_CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash collateral received subject to enforceable master netting arrangement or similar agreement not set off against financial assets",
        "verboseLabel": "Cash collateral received (excluding surplus collateral)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash collateral received that is subject to an enforceable master netting arrangement or similar agreement and that is not set off against financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r728",
      "r754"
     ]
    },
    "aeg_CashCollateralRelatedToSecuritiesLendingRepurchaseAgreementsAndMarginsOnDerivativesTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashCollateralRelatedToSecuritiesLendingRepurchaseAgreementsAndMarginsOnDerivativesTransactions",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash collateral related to securities lending repurchase agreements and margins on derivatives transactions",
        "definitionGuidance": "Cash collateral related to securities lending, repurchase agreements and margins on derivatives transactions",
        "documentation": "Cash collateral related to securities lending, repurchase agreements and margins on derivatives transactions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flow hedges [member]",
        "verboseLabel": "Failing the SPPI criteria [member]",
        "terseLabel": "Cash flow hedges [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedges of the exposure to variability in cash flows that (a) are attributable to a particular risk associated with a recognised asset or liability (such as all or some future interest payments on variable rate debt) or a highly probable forecast transaction; and (b) could affect profit or loss. [Refer: Types of hedges [domain]]"
       }
      }
     },
     "auth_ref": [
      "r96",
      "r308",
      "r316",
      "r319",
      "r551",
      "r557",
      "r560"
     ]
    },
    "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash Flow Movements On Operating Items Not Reflected In Income",
        "negatedTotalLabel": "Cash flow movements on operating items not reflected in income",
        "documentation": "Cash flow movements on operating items not reflected in income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from losing control of subsidiaries or other businesses, classified as investing activities",
        "verboseLabel": "Disposal of subsidiaries and businesses, net of cash"
       }
      },
      "en": {
       "role": {
        "documentation": "The aggregate cash flows arising from losing control of subsidiaries or other businesses, classified as investing activities. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r122"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges",
       "weight": 1.0,
       "order": 42.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsDisclosureOfDetailedInformationOfCashFlowStatementDetail",
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) financing activities",
        "totalLabel": "Net cash flows from financing activities",
        "definitionGuidance": "Net cash flows from (used in) financing activities",
        "verboseLabel": "Net cash flows from financing activities",
        "presentationGuidance": "Net cash flows from financing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) financing activities, which are activities that result in changes in the size and composition of the contributed equity and borrowings of the entity, from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r114",
      "r126"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsDisclosureOfDetailedInformationOfCashFlowStatementDetail",
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) investing activities",
        "totalLabel": "Net cash flows from investing activities",
        "terseLabel": "Net cash flows from (used in) investing activities",
        "verboseLabel": "Net cash flows from investing activities",
        "presentationGuidance": "Net cash flows from investing activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from (used in) investing activities, which are the acquisition and disposal of long-term assets and other investments not included in cash equivalents, from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": [
      "r114",
      "r126"
     ]
    },
    "ifrs-full_CashFlowsFromUsedInOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsFromUsedInOperatingActivities",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsDisclosureOfDetailedInformationOfCashFlowStatementDetail",
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows from (used in) operating activities",
        "totalLabel": "Net cash flows from operating activities",
        "terseLabel": "Net cash flows from (used in) operating activities",
        "verboseLabel": "Net cash flows from operating activities",
        "presentationGuidance": "Net cash flows from operating activities"
       }
      }
     },
     "auth_ref": [
      "r114",
      "r126"
     ]
    },
    "ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities",
        "negatedLabel": "Acquisition of subsidiaries, net of cash"
       }
      },
      "en": {
       "role": {
        "documentation": "The aggregate cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r122"
     ]
    },
    "aeg_CashInflows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashInflows",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail": {
       "parentTag": "aeg_NetCashFlows",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash inflows",
        "terseLabel": "Cash inflows",
        "documentation": "Cash inflows."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CashOnHand": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CashOnHand",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": "aeg_Collateral",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash on hand",
        "terseLabel": "Cash collateral"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash held by the entity. This does not include demand deposits."
       }
      }
     },
     "auth_ref": [
      "r934"
     ]
    },
    "aeg_CashOutflows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashOutflows",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail": {
       "parentTag": "aeg_NetCashFlows",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash outflows",
        "terseLabel": "Cash outflows",
        "documentation": "Cash outflows."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CashOutstandingFromAssetsSold": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashOutstandingFromAssetsSold",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash outstanding from assets sold",
        "negatedLabel": "Cash outstanding from assets sold",
        "documentation": "Cash outstanding from assets sold."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CashPaidForReverseRepurchaseAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CashPaidForReverseRepurchaseAgreements",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cash Paid For Reverse Repurchase Agreements",
        "terseLabel": "Cash paid for reverse repurchase agreements",
        "documentation": "Cash paid for reverse repurchase agreements."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CategoriesOfFinancialAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialAssetsAxis",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial assets [axis]",
        "terseLabel": "Categories of financial assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r349",
      "r539"
     ]
    },
    "ifrs-full_CategoriesOfFinancialAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialAssetsDomain",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial assets [domain]",
        "terseLabel": "Categories of financial assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated categories of financial assets. It also represents the standard value for the 'Categories of financial assets' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r349",
      "r539"
     ]
    },
    "ifrs-full_CategoriesOfFinancialLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialLiabilitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial liabilities [axis]",
        "terseLabel": "Categories of financial liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r349",
      "r539"
     ]
    },
    "ifrs-full_CategoriesOfFinancialLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfFinancialLiabilitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of financial liabilities [domain]",
        "terseLabel": "Categories of financial liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated categories of financial liabilities. It also represents the standard value for the 'Categories of financial liabilities' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r349",
      "r539"
     ]
    },
    "ifrs-full_CategoriesOfRelatedPartiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfRelatedPartiesAxis",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemuneration",
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/AuditorsRemunerationTables",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail",
      "http://www.aegon.com/role/CommissionsAndExpenses",
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/CommissionsAndExpensesTables",
      "http://www.aegon.com/role/CommitmentsAndContingencies",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlans",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriod",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancingNetInvestmentResult",
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
      "http://www.aegon.com/role/FinancingNetInvestmentResultTables",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/GeneralInformation",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTax",
      "http://www.aegon.com/role/IncomeTaxTables",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFees",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables",
      "http://www.aegon.com/role/InvestmentIncome",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail",
      "http://www.aegon.com/role/InvestmentIncomeTables",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/LoansToGroupCompanies",
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail",
      "http://www.aegon.com/role/LoansToGroupCompaniesTables",
      "http://www.aegon.com/role/LongTermBorrowings",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsTables",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformation",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/NonCurrentAssets",
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
      "http://www.aegon.com/role/NonCurrentAssetsTables",
      "http://www.aegon.com/role/NumberOfEmployees",
      "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherCurrentAssets",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstruments",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables",
      "http://www.aegon.com/role/OtherLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriation",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationTables",
      "http://www.aegon.com/role/Provisions",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail",
      "http://www.aegon.com/role/Receivables",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail",
      "http://www.aegon.com/role/ResultsFromFinancialTransactions",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/ShareCapital",
      "http://www.aegon.com/role/ShareholdersEquity",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables",
      "http://www.aegon.com/role/SharesInGroupCompanies",
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesTables",
      "http://www.aegon.com/role/SubordinatedBorrowings",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of related parties [axis]",
        "terseLabel": "Categories of related parties [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r41",
      "r486"
     ]
    },
    "ifrs-full_CategoriesOfRelatedPartiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CategoriesOfRelatedPartiesDomain",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemuneration",
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/AuditorsRemunerationTables",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail",
      "http://www.aegon.com/role/CommissionsAndExpenses",
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/CommissionsAndExpensesTables",
      "http://www.aegon.com/role/CommitmentsAndContingencies",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlans",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriod",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancingNetInvestmentResult",
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
      "http://www.aegon.com/role/FinancingNetInvestmentResultTables",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/GeneralInformation",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTax",
      "http://www.aegon.com/role/IncomeTaxTables",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFees",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables",
      "http://www.aegon.com/role/InvestmentIncome",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail",
      "http://www.aegon.com/role/InvestmentIncomeTables",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/LoansToGroupCompanies",
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail",
      "http://www.aegon.com/role/LoansToGroupCompaniesTables",
      "http://www.aegon.com/role/LongTermBorrowings",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsTables",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformation",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/NonCurrentAssets",
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
      "http://www.aegon.com/role/NonCurrentAssetsTables",
      "http://www.aegon.com/role/NumberOfEmployees",
      "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherCurrentAssets",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstruments",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables",
      "http://www.aegon.com/role/OtherLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriation",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationTables",
      "http://www.aegon.com/role/Provisions",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail",
      "http://www.aegon.com/role/Receivables",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail",
      "http://www.aegon.com/role/ResultsFromFinancialTransactions",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/ShareCapital",
      "http://www.aegon.com/role/ShareholdersEquity",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables",
      "http://www.aegon.com/role/SharesInGroupCompanies",
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesTables",
      "http://www.aegon.com/role/SubordinatedBorrowings",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Categories of related parties [domain]",
        "terseLabel": "Categories of related parties [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Categories of related parties' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r41",
      "r486"
     ]
    },
    "aeg_ChangeInFairValueOfHedgesOnGuaranteesInProductsWithDirectParticipatingFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangeInFairValueOfHedgesOnGuaranteesInProductsWithDirectParticipatingFeatures",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Change In Fair Value Of Hedges On Guarantees In Products With Direct Participating Features",
        "terseLabel": "Change in fair value of hedges on guarantees in products with DPF",
        "documentation": "Change in fair value of hedges on guarantees in products with direct participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangeInFairValueOfUnderlyingAssetsOfProductsWithDirectParticipatingFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangeInFairValueOfUnderlyingAssetsOfProductsWithDirectParticipatingFeatures",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "ifrs-full_InsuranceFinanceIncomeExpenses",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Change In Fair Value Of Underlying Assets Of Products With Direct Participating Features",
        "verboseLabel": "Change in fair value of underlying assets",
        "documentation": "Change in fair value of underlying assets of products with direct participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangeInOwnershipNonControllingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangeInOwnershipNonControllingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 45.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Change In Ownership Non Controlling Interests",
        "negatedLabel": "Change in ownership non-controlling interests",
        "documentation": "Change in ownership non controlling interests."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ChangedPeerGroupFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ChangedPeerGroupFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changed Peer Group, Footnote [Text Block]",
        "terseLabel": "Changed Peer Group, Footnote"
       }
      }
     },
     "auth_ref": [
      "r851"
     ]
    },
    "aeg_ChangesInAccruals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInAccruals",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 29.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in accruals",
        "negatedTotalLabel": "Changes in accruals",
        "documentation": "Changes in accruals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInCashFlowHedgingReserveFromInsuranceContractsIssuedExcludedFromProfitAndLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInCashFlowHedgingReserveFromInsuranceContractsIssuedExcludedFromProfitAndLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 8.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes In Cash Flow Hedging Reserve From Insurance Contracts Issued Excluded From Profit And Loss Before Tax",
        "terseLabel": "Changes in cash flow hedging reserve",
        "documentation": "Changes in cash flow hedging reserve from insurance contracts issued excluded from profit and loss before tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInCashFlowHedgingReserveOtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInCashFlowHedgingReserveOtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 23.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 26.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes In Cash Flow Hedging Reserve Other Comprehensive Income Before Tax",
        "terseLabel": "Changes in cash flow hedging reserve",
        "documentation": "Changes In Cash Flow Hedging Reserve Other Comprehensive Income Before Tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInDeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInDeferredTaxAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
       "weight": -1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in Deferred Tax Assets",
        "negatedLabel": "Changes in deferred tax assets",
        "documentation": "Changes in deferred tax assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInFairValueMeasurementAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInFairValueMeasurementAssetsAndLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in fair value measurement assets and liabilities [abstract]",
        "documentation": "Changes in fair value measurement assets and liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInFairValueMeasurementAssetsAndLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInFairValueMeasurementAssetsAndLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in fair value measurement assets and liabilities [line items]",
        "terseLabel": "Changes in fair value measurement assets and liabilities [Line Items]",
        "documentation": "Changes in fair value measurement assets and liabilities [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInFairValueMeasurementAssetsAndLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInFairValueMeasurementAssetsAndLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in fair value measurement assets and liabilities [table]",
        "terseLabel": "Changes in fair value measurement assets and liabilities [table]",
        "documentation": "Changes in fair value measurement assets and liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ChangesInFairValueOfFinancialAssetsAttributableToChangesInCreditRiskOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ChangesInFairValueOfFinancialAssetsAttributableToChangesInCreditRiskOfFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in fair value of financial assets designated as measured at fair value through profit or loss, attributable to changes in credit risk of financial assets",
        "terseLabel": "Change in fair value attributable to changes in credit risk during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the fair value of a financial asset (or group of financial assets) designated as measured at fair value through profit or loss that is attributable to changes in the credit risk of that asset determined either: (a) as the amount of change in its fair value that is not attributable to changes in market conditions that give rise to market risk ; or (b) using an alternative method the entity believes more faithfully represents the amount of change in its fair value that is attributable to changes in the credit risk of the asset. [Refer: Credit risk [member]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r350"
     ]
    },
    "aeg_ChangesInFulfilmentCashFlowsRelatingToIncurredClaims": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInFulfilmentCashFlowsRelatingToIncurredClaims",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes In Fulfilment Cash Flows Relating To Incurred Claims",
        "terseLabel": "Experience adjustments on incurred claims",
        "documentation": "Changes in fulfilment cash flows relating to incurred claims."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ChangesInInterestRatesAndOtherFinancialAssumptions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ChangesInInterestRatesAndOtherFinancialAssumptions",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "ifrs-full_InsuranceFinanceIncomeExpenses",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes In Interest Rates And Other Financial Assumptions",
        "verboseLabel": "Interest rate and other financial assumption changes",
        "documentation": "Changes in interest rates and other financial assumptions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CharacteristicsOfDefinedBenefitPlansAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CharacteristicsOfDefinedBenefitPlansAxis",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Characteristics of defined benefit plans [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r684"
     ]
    },
    "ifrs-full_CharacteristicsOfDefinedBenefitPlansDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CharacteristicsOfDefinedBenefitPlansDomain",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Characteristics of defined benefit plans [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all defined benefit plans when disaggregated by characteristics of defined benefits plans. It also represents the standard value for the 'Characteristics of defined benefit plans' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r684"
     ]
    },
    "ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]",
        "terseLabel": "Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year"
       }
      }
     },
     "auth_ref": [
      "r848"
     ]
    },
    "ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]",
        "terseLabel": "Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested"
       }
      }
     },
     "auth_ref": [
      "r846"
     ]
    },
    "dei_CityAreaCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CityAreaCode",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "City Area Code",
        "documentation": "Area code of city"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ClaimsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ClaimsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Claims [Member]",
        "terseLabel": "Claims [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ClassBCommonSharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ClassBCommonSharesMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Class B common shares [member]",
        "documentation": "Class B common shares."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ClassesOfAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfAssetsAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of assets [axis]",
        "terseLabel": "Classes of assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r72",
      "r75",
      "r184",
      "r196",
      "r422",
      "r494",
      "r586"
     ]
    },
    "ifrs-full_ClassesOfAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfAssetsDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of assets [domain]",
        "terseLabel": "Classes of assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits. It also represents the standard value for the 'Classes of assets' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r72",
      "r184",
      "r196",
      "r422",
      "r494",
      "r586"
     ]
    },
    "ifrs-full_ClassesOfContingentLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfContingentLiabilitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of contingent liabilities [axis]",
        "terseLabel": "Classes of contingent liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r87",
      "r279",
      "r504"
     ]
    },
    "ifrs-full_ClassesOfContingentLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfContingentLiabilitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of contingent liabilities [domain]",
        "terseLabel": "Classes of contingent liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for possible obligations that arise from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within the control of the entity; or, present obligations that arise from past events but are not recognised because (a) it is probable that an outflow of resources embodying economic benefits will be required to settle the obligations; or (b) the amount of the obligations cannot be measured with sufficient reliability. It also represents the standard value for the 'Classes of contingent liabilities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r88",
      "r279"
     ]
    },
    "ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfEntitysOwnEquityInstrumentsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of entity's own equity instruments [axis]",
        "terseLabel": "Classes of entity's own equity instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r184",
      "r586"
     ]
    },
    "ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfEntitysOwnEquityInstrumentsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of entity's own equity instruments [domain]",
        "terseLabel": "Classes of entity's own equity instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments issued by the entity. It also represents the standard value for the 'Classes of entity's own equity instruments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r184",
      "r586"
     ]
    },
    "ifrs-full_ClassesOfFinancialAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialAssetsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
      "http://www.aegon.com/role/FinancialRisksTables",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial assets [axis]",
        "terseLabel": "Classes of financial assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r270",
      "r341",
      "r342",
      "r379",
      "r380",
      "r606"
     ]
    },
    "ifrs-full_ClassesOfFinancialAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialAssetsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
      "http://www.aegon.com/role/FinancialRisksTables",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial assets [domain]",
        "terseLabel": "Classes of share capital [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes of financial assets. It also represents the standard value for the 'Classes of financial assets' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r270",
      "r341",
      "r342",
      "r379",
      "r380",
      "r606"
     ]
    },
    "ifrs-full_ClassesOfFinancialInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialInstrumentsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial instruments [axis]",
        "terseLabel": "Classes of financial instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r333",
      "r337",
      "r338",
      "r566",
      "r572"
     ]
    },
    "ifrs-full_ClassesOfFinancialInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialInstrumentsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial instruments [domain]",
        "terseLabel": "Classes of financial instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes of financial instruments. Financial instruments are contracts that give rise to a financial asset of one entity and a financial liability or equity instrument of another entity. It also represents the standard value for the 'Classes of financial instruments' axis if no other member is used. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r333",
      "r337",
      "r338",
      "r566",
      "r572"
     ]
    },
    "ifrs-full_ClassesOfFinancialLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialLiabilitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial liabilities [axis]",
        "terseLabel": "Classes of financial liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r341",
      "r342",
      "r379",
      "r380"
     ]
    },
    "ifrs-full_ClassesOfFinancialLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfFinancialLiabilitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of financial liabilities [domain]",
        "terseLabel": "Classes of financial liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated classes financial liabilities. It also represents the standard value for the 'Classes of financial liabilities' axis if no other member is used. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r341",
      "r342",
      "r379",
      "r380"
     ]
    },
    "ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfIntangibleAssetsAndGoodwillAxis",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of intangible assets and goodwill [axis]",
        "terseLabel": "Classes of intangible assets and goodwill [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r926"
     ]
    },
    "ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfIntangibleAssetsAndGoodwillDomain",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of intangible assets and goodwill [domain]",
        "terseLabel": "Classes of intangible assets and goodwill [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for intangible assets and goodwill. It also represents the standard value for the 'Classes of intangible assets and goodwill' axis if no other member is used. [Refer: Goodwill; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r926"
     ]
    },
    "ifrs-full_ClassesOfLiabilitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfLiabilitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of liabilities [axis]",
        "terseLabel": "Classes of liabilities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r184",
      "r586"
     ]
    },
    "ifrs-full_ClassesOfLiabilitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfLiabilitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of liabilities [domain]",
        "terseLabel": "Classes of liabilities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits. It also represents the standard value for the 'Classes of liabilities' axis if no other member is used. [Refer: Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r184",
      "r586"
     ]
    },
    "ifrs-full_ClassesOfOtherProvisionsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfOtherProvisionsDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of other provisions [domain]",
        "terseLabel": "Classes of other provisions [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for provisions other than provisions for employee benefits. It also represents the standard value for the 'Classes of other provisions' axis if no other member is used. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r86",
      "r503"
     ]
    },
    "ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfPropertyPlantAndEquipmentAxis",
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of property, plant and equipment [axis]",
        "terseLabel": "Classes of property, plant and equipment [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r15",
      "r467"
     ]
    },
    "ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfPropertyPlantAndEquipmentDomain",
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of property, plant and equipment [domain]",
        "terseLabel": "Classes of property, plant and equipment [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Classes of property, plant and equipment' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r15",
      "r467"
     ]
    },
    "ifrs-full_ClassesOfProvisionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfProvisionsAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of other provisions [axis]",
        "terseLabel": "Classes of other provisions [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r86",
      "r503"
     ]
    },
    "ifrs-full_ClassesOfShareCapitalAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfShareCapitalAxis",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/CoverPage",
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail",
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of share capital [axis]",
        "terseLabel": "Classes of share capital [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r441",
      "r591",
      "r652"
     ]
    },
    "ifrs-full_ClassesOfShareCapitalDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ClassesOfShareCapitalDomain",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/CoverPage",
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail",
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Classes of share capital [domain]",
        "terseLabel": "Classes of share capital [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for share capital of the entity. It also represents the standard value for the 'Classes of share capital' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r441",
      "r591",
      "r652"
     ]
    },
    "aeg_ClosingLevelsOfMajorIndices": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ClosingLevelsOfMajorIndices",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Closing Levels Of Major Indices",
        "terseLabel": "Closing levels of major indices",
        "documentation": "Closing levels of major indices."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_CoSelectedMeasureAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CoSelectedMeasureAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Company Selected Measure Amount",
        "terseLabel": "Company Selected Measure Amount"
       }
      }
     },
     "auth_ref": [
      "r852"
     ]
    },
    "ecd_CoSelectedMeasureName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CoSelectedMeasureName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Company Selected Measure Name",
        "terseLabel": "Company Selected Measure Name"
       }
      }
     },
     "auth_ref": [
      "r852"
     ]
    },
    "aeg_CofundsLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CofundsLtdMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cofunds Ltd [member]",
        "verboseLabel": "Cofunds Limited [member]",
        "documentation": "Cofunds Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Collateral": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Collateral",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateral",
        "totalLabel": "Total collateral",
        "documentation": "Collateral"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CollateralPledged": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CollateralPledged",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateral Pledged",
        "terseLabel": "Collateral pledged",
        "documentation": "Collateral pledged."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CollateralPledgedForDerivativeTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CollateralPledgedForDerivativeTransactions",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateral Pledged For Derivative Transactions",
        "terseLabel": "Amount of collateral pledged for derivative transactions",
        "documentation": "Collateral pledged for derivative transactions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CollateralizedDebtObligationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CollateralizedDebtObligationMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Collateralized Debt Obligation [Member]",
        "terseLabel": "Collateralized debt obligations [member]",
        "documentation": "Collateralized debt obligation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommercialMortgageBackedSecurities1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommercialMortgageBackedSecurities1Member",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commercial Mortgage Backed Securities 1 [member]",
        "definitionGuidance": "Commercial mortgage-backed securities (CMBSs) [member]",
        "verboseLabel": "Commercial mortgage-backed securities [member]",
        "documentation": "Commercial mortgage backed securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommissionAndExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommissionAndExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 8.0
      },
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commission And Expense",
        "terseLabel": "Commissions and expenses",
        "totalLabel": "Total",
        "documentation": "Commission and expense."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommissionAndExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommissionAndExpenses",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commission and expenses",
        "terseLabel": "Commissions and expenses",
        "documentation": "Commission and expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Commissions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Commissions",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commissions",
        "negatedLabel": "Commissions",
        "documentation": "Commissions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommissionsAndExpensesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommissionsAndExpensesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commissions And Expenses [member]",
        "terseLabel": "Commissions and expenses [member]",
        "documentation": "Commissions and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommonBSharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommonBSharesMember",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common B Shares[member]",
        "terseLabel": "Common share B [member]",
        "documentation": "Common B shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommonSharesHeldByNonexecutiveDirectors": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommonSharesHeldByNonexecutiveDirectors",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Shares Held by NonExecutive Directors",
        "terseLabel": "Common shares held by Supervisory Board members",
        "documentation": "Common shares held by Non-Executive Directors."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommonSharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommonSharesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common shares [member]",
        "terseLabel": "Common shares [member]",
        "documentation": "Common shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommonSharesWithdrawn": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommonSharesWithdrawn",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common shares withdrawn",
        "terseLabel": "Shares withdrawn",
        "documentation": "Common shares withdrawn."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommonSharesWithdrawnAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommonSharesWithdrawnAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common shares withdrawn amount",
        "negatedLabel": "Shares withdrawn",
        "documentation": "Common shares withdrawn amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommonStockSeriesBMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommonStockSeriesBMember",
     "presentation": [
      "http://www.aegon.com/role/CoverPage",
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Common Stock Series B [member]",
        "terseLabel": "Common share B [member]",
        "verboseLabel": "Common share B [member]",
        "documentation": "Common stock series B."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommunicationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommunicationMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Communication [member]",
        "terseLabel": "Communication [member]",
        "documentation": "Communication."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CommunicationsAndTechnologyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CommunicationsAndTechnologyMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Communications And Technology [Member]",
        "terseLabel": "Communications &amp; Technology [member]",
        "documentation": "Communications And Technology."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsCoSelectedMeasureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Company Selected Measure [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Company Selected Measure"
       }
      }
     },
     "auth_ref": [
      "r857"
     ]
    },
    "ecd_CompActuallyPaidVsNetIncomeTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsNetIncomeTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Net Income [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Net Income"
       }
      }
     },
     "auth_ref": [
      "r856"
     ]
    },
    "ecd_CompActuallyPaidVsOtherMeasureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsOtherMeasureTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Other Measure [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Other Measure"
       }
      }
     },
     "auth_ref": [
      "r858"
     ]
    },
    "ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "CompActuallyPaidVsTotalShareholderRtnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Actually Paid vs. Total Shareholder Return [Text Block]",
        "terseLabel": "Compensation Actually Paid vs. Total Shareholder Return"
       }
      }
     },
     "auth_ref": [
      "r855"
     ]
    },
    "aeg_CompaniesAndBusinessesAcquiredAndDivestedAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CompaniesAndBusinessesAcquiredAndDivestedAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Companies and Businesses Acquired and Divested [Abstract]",
        "documentation": "Companies and businesses acquired and divested."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfEquityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfEquityAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical",
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of equity [axis]",
        "terseLabel": "Components of equity [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "ifrs-full_ComponentsOfEquityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfEquityDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical",
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of equity [domain]",
        "terseLabel": "Components of equity [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the residual interest in the assets of the entity after deducting all its liabilities. It also represents the standard value for the 'Components of equity' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "aeg_ComponentsOfGainLossOnInsuranceContractsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ComponentsOfGainLossOnInsuranceContractsAxis",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components Of Gain Loss On Insurance Contracts [Axis]",
        "documentation": "Components of gain loss on insurance contracts axis."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ComponentsOfGainLossOnInsuranceContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ComponentsOfGainLossOnInsuranceContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components Of Gain Loss On Insurance Contracts [Member]",
        "documentation": "Components of gain loss on insurance contracts member."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]",
        "terseLabel": "Items that may be reclassified subsequently to profit or loss:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]",
        "terseLabel": "Items that will not be reclassified to profit or loss:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtdAlternate1": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income",
        "totalLabel": "Total comprehensive income / (loss)",
        "terseLabel": "Total comprehensive income",
        "verboseLabel": "Total comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of change in equity resulting from transactions and other events, other than those changes resulting from transactions with owners in their capacity as owners."
       }
      }
     },
     "auth_ref": [
      "r135",
      "r137",
      "r157",
      "r489",
      "r521",
      "r608",
      "r656",
      "r705"
     ]
    },
    "ifrs-full_ComprehensiveIncomeAttributableToAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComprehensiveIncomeAttributableToAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income attributable to [abstract]",
        "terseLabel": "Total comprehensive income/ (loss) attributable to:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComprehensiveIncomeAttributableToNoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income, attributable to non-controlling interests",
        "terseLabel": "Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of comprehensive income attributable to non-controlling interests. [Refer: Comprehensive income; Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r608",
      "r659"
     ]
    },
    "ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComprehensiveIncomeAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive income, attributable to owners of parent",
        "verboseLabel": "Owners of Aegon Ltd."
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of comprehensive income attributable to owners of the parent. [Refer: Comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r608",
      "r660"
     ]
    },
    "aeg_ComprisedOfAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ComprisedOfAbstract",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprised Of [Abstract]",
        "verboseLabel": "Realised gains and (losses) on financial investments comprised of:",
        "documentation": "Comprised of."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ComputerSoftwareMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ComputerSoftwareMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Computer software [member]",
        "terseLabel": "Software [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets representing computer software. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r694"
     ]
    },
    "aeg_ConcentrationsOfRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConcentrationsOfRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Concentrations Of Risk [Member]",
        "terseLabel": "Concentration Risk By Type [member]",
        "documentation": "Concentration risk by type [member]."
       }
      }
     },
     "auth_ref": []
    },
    "srt_CondensedCashFlowStatementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CondensedCashFlowStatementTable",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Cash Flow Statement [Table]",
        "terseLabel": "Condensed Cash Flow Statement [Table]",
        "documentation": "Disclosure of information about condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations."
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "srt_CondensedCashFlowStatementsCaptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CondensedCashFlowStatementsCaptionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Cash Flow Statements, Captions [Line Items]",
        "terseLabel": "Disclosure of cash flow statement [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Financial Information Disclosure [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CondensedFinancialInformationOfRegistrantLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CondensedFinancialInformationOfRegistrantLineItems",
     "presentation": [
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed financial information of registrant [line items]",
        "terseLabel": "Condensed financial information of registrant [line items]",
        "documentation": "Condensed financial information of registrant [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_CondensedIncomeStatementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CondensedIncomeStatementTable",
     "presentation": [
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Income Statement [Table]",
        "terseLabel": "Condensed Income Statement [Table]",
        "documentation": "Disclosure of information about condensed income statement including, but not limited to, income statements of consolidated entities and consolidation eliminations."
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "srt_CondensedIncomeStatementsCaptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CondensedIncomeStatementsCaptionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Income Statements, Captions [Line Items]",
        "terseLabel": "Condensed Income Statements, Captions [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r381"
     ]
    },
    "ifrs-full_ConsolidatedStructuredEntitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ConsolidatedStructuredEntitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated structured entities [axis]",
        "terseLabel": "Consolidated structured entities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r174"
     ]
    },
    "ifrs-full_ConsolidatedStructuredEntitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ConsolidatedStructuredEntitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated structured entities [domain]",
        "terseLabel": "Consolidated structured entities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Consolidated structured entities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r174"
     ]
    },
    "aeg_ConstantPrepaymentRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConstantPrepaymentRateMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Constant Prepayment Rate [Member]",
        "terseLabel": "Constant Prepayment Rate [Member]",
        "documentation": "Constant prepayment rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ConsumerCyclicalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConsumerCyclicalMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consumer Cyclical [Member]",
        "terseLabel": "Consumer cyclical [member]",
        "documentation": "Consumer Cyclical."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ConsumerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConsumerMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consumer [member]",
        "terseLabel": "Consumer [member]",
        "documentation": "Consumer."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ConsumerNonCyclicalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConsumerNonCyclicalMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consumer Non Cyclical [Member]",
        "terseLabel": "Consumer non-cyclical [member]",
        "documentation": "Consumer Non Cyclical."
       }
      }
     },
     "auth_ref": []
    },
    "dei_ContactPersonnelEmailAddress": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "ContactPersonnelEmailAddress",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contact Personnel Email Address",
        "documentation": "Email address of contact personnel."
       }
      }
     },
     "auth_ref": []
    },
    "dei_ContactPersonnelName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "ContactPersonnelName",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contact Personnel Name",
        "documentation": "Name of contact personnel"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ContinuingAndDiscontinuedOperationsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContinuingAndDiscontinuedOperationsAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing and discontinued operations [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r287"
     ]
    },
    "ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing involvement in derecognised financial assets by type of instrument [axis]",
        "terseLabel": "Continuing involvement in derecognised financial assets by type of instrument [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r743"
     ]
    },
    "ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing involvement in derecognised financial assets by type of instrument [domain]",
        "terseLabel": "Continuing involvement in derecognised financial assets by type of instrument [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of financial instruments. It also represents the standard value for the 'Continuing involvement in derecognised financial assets by type of instrument' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r743"
     ]
    },
    "ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing involvement in derecognised financial assets by type of transfer [axis]",
        "terseLabel": "Continuing involvement in derecognised financial assets by type of transfer [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r743"
     ]
    },
    "ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfTransferDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing involvement in derecognised financial assets by type of transfer [domain]",
        "terseLabel": "Continuing involvement in derecognised financial assets by type of transfer [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of transfers of financial instruments. It also represents the standard value for the 'Continuing involvement in derecognised financial assets by type of transfer' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r743"
     ]
    },
    "ifrs-full_ContinuingOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContinuingOperationsMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Continuing operations [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for components of the entity that are not discontinued operations. A component of an entity comprises operations and cash flows that can be clearly distinguished, operationally and for financial reporting purposes, from the rest of the entity. This meaning may be overridden for line items which are either intrinsically related to discontinued operations (or disposal groups held for sale), or which are typically reported for the aggregate of continuing and discontinued. This member also represents the standard value for the 'Continuing and discontinued operations' axis if no other member is used. [Refer: Discontinued operations [member]; Aggregate continuing and discontinued operations [member]]"
       }
      }
     },
     "auth_ref": [
      "r287"
     ]
    },
    "aeg_ContractAgreementTerm": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractAgreementTerm",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contract agreement term",
        "terseLabel": "Contract agreement term",
        "documentation": "Contract agreement term."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ContractsWithDirectParticipationContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractsWithDirectParticipationContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contracts With Direct Participation Contracts [Member]",
        "terseLabel": "Contracts with direct participation contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ContractsWithoutDirectParticipationContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractsWithoutDirectParticipationContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contracts Without Direct Participation Contracts [Member]",
        "terseLabel": "Contracts without direct participation contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ContractualMaturitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractualMaturitiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "contractual maturities [member]",
        "terseLabel": "Contractual maturities of each category of financial liabilities [member]",
        "documentation": "Contractual maturities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ContractualObligationsPaymentAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractualObligationsPaymentAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual Obligations payment amount",
        "terseLabel": "Contractual obligations payment amount",
        "documentation": "Contractual Obligations payment amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ContractualObligationsPeriod": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractualObligationsPeriod",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual obligations period",
        "terseLabel": "Contractual obligations period",
        "documentation": "Contractual obligations period."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ContractualObligationsTransitionAndConversionCharges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractualObligationsTransitionAndConversionCharges",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual obligations transition and conversion charges",
        "terseLabel": "Contractual obligations transition and conversion charges",
        "documentation": "Contractual obligations transition and conversion charges."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ContractualServiceMargin": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContractualServiceMargin",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "ifrs-full_CapitalReserve",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual service margin",
        "verboseLabel": "CSM after tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the contractual service margin. [Refer: Contractual service margin [member]]"
       }
      }
     },
     "auth_ref": [
      "r241"
     ]
    },
    "aeg_ContractualServiceMarginAfterTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractualServiceMarginAfterTax",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual Service Margin After Tax",
        "presentationGuidance": "Contractual service margin after tax",
        "documentation": "Contractual service margin after tax."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ContractualServiceMarginMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContractualServiceMarginMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual service margin [member]",
        "verboseLabel": "CSM [member]",
        "definitionGuidance": "Contractual service margin [member]",
        "terseLabel": "Total CSM [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of the carrying amount of the asset or liability for a group of insurance contracts representing the unearned profit the entity will recognise as it provides insurance contract services under the insurance contracts in the group."
       }
      }
     },
     "auth_ref": [
      "r204",
      "r238"
     ]
    },
    "aeg_ContractualServiceMarginRecognizedForServicesReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ContractualServiceMarginRecognizedForServicesReceived",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual Service Margin Recognized For Services Received",
        "terseLabel": "CSM recognized for service received",
        "documentation": "Contractual service margin recognized for services received."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ContractualServiceMarginRelatedToContractsThatExistedAtTransitionDateToWhichFairValueApproachHasBeenAppliedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContractualServiceMarginRelatedToContractsThatExistedAtTransitionDateToWhichFairValueApproachHasBeenAppliedMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual service margin related to contracts that existed at transition date to which fair value approach has been applied [member]",
        "terseLabel": "Transitioned under the fair value approach [member]",
        "verboseLabel": "FVA [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the contractual service margin related to contracts that existed at the transition date to which the fair value approach (as described in paragraphs C20-C24B of IFRS 17) has been applied. [Refer: Contractual service margin [member]]"
       }
      }
     },
     "auth_ref": [
      "r247"
     ]
    },
    "ifrs-full_ContractualServiceMarginRelatedToContractsThatExistedAtTransitionDateToWhichModifiedRetrospectiveApproachHasBeenAppliedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContractualServiceMarginRelatedToContractsThatExistedAtTransitionDateToWhichModifiedRetrospectiveApproachHasBeenAppliedMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contractual service margin related to contracts that existed at transition date to which modified retrospective approach has been applied [member]",
        "terseLabel": "Transitioned under the modified retrospective approach [member]",
        "verboseLabel": "MRA [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the contractual service margin related to contracts that existed at the transition date to which the modified retrospective approach (as described in paragraphs C6-C19A of IFRS 17) has been applied. [Refer: Contractual service margin [member]]"
       }
      }
     },
     "auth_ref": [
      "r246"
     ]
    },
    "ifrs-full_ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contributions to plan by employer, net defined benefit liability (asset)",
        "negatedLabel": "Contributions by employer"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in net defined benefit liability (asset) resulting from contributions to a defined benefit plan by the employer. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r28"
     ]
    },
    "ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ContributionsToPlanNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contributions to plan, net defined benefit liability (asset)",
        "negatedLabel": "Contributions paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in the net defined benefit liability (asset) resulting from contributions to a defined benefit plan. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r28",
      "r476"
     ]
    },
    "aeg_ConvertibleDebtSecuritiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConvertibleDebtSecuritiesAxis",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Convertible Debt Securities [Axis]",
        "documentation": "Convertible debt securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ConvertibleDebtSecuritiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ConvertibleDebtSecuritiesDomain",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Convertible Debt Securities [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CorienMWortmannMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CorienMWortmannMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corien M. Wortmann [Member]",
        "documentation": "Corien M. Wortmann."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CorporateBondsInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CorporateBondsInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporate Bonds Investment [member]",
        "terseLabel": "Bonds [member]",
        "documentation": "Corporate bonds investment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CorporateBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CorporateBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporate Bonds [member]",
        "terseLabel": "Corporate bonds [member]",
        "verboseLabel": "Corporate [member]",
        "documentation": "Corporate bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CorporateDebtHedgeProgramMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CorporateDebtHedgeProgramMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Corporate Debt Hedge Program [Member]",
        "terseLabel": "Corporate Debt Hedge Program [Member]",
        "documentation": "Corporate debt hedge program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CostSharingToSubsidiariesJointVenturesAndAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CostSharingToSubsidiariesJointVenturesAndAssociates",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail": {
       "parentTag": "aeg_CommissionAndExpense",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cost Sharing To Subsidiaries Joint Ventures And Associates",
        "terseLabel": "Cost sharing to group companies",
        "documentation": "Cost sharing to subsidiaries joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CounterpartiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CounterpartiesAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Counterparties [axis]",
        "terseLabel": "Counterparties [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r353"
     ]
    },
    "ifrs-full_CounterpartiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CounterpartiesDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Counterparties [domain]",
        "terseLabel": "Counterparties [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the parties to the transaction other than the entity. It also represents the standard value for the 'Counterparties' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r353"
     ]
    },
    "ifrs-full_CountryOfIncorporation": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CountryOfIncorporation",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country of incorporation",
        "terseLabel": "Country of Incorporation"
       }
      },
      "en": {
       "role": {
        "documentation": "The country in which the entity is incorporated."
       }
      }
     },
     "auth_ref": [
      "r436",
      "r596",
      "r619"
     ]
    },
    "ifrs-full_CountryOfIncorporationOfJointVenture": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CountryOfIncorporationOfJointVenture",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country of incorporation of joint venture",
        "terseLabel": "Country of incorporation of joint venture"
       }
      },
      "en": {
       "role": {
        "documentation": "The country in which a joint venture of the entity is incorporated. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r54",
      "r59",
      "r148"
     ]
    },
    "ifrs-full_CountryOfIncorporationOrResidenceOfAssociate": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CountryOfIncorporationOrResidenceOfAssociate",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country of incorporation of associate",
        "terseLabel": "Country of incorporation of associate"
       }
      },
      "en": {
       "role": {
        "documentation": "The country in which an associate of the entity is incorporated. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r54",
      "r59",
      "r148"
     ]
    },
    "ifrs-full_CountryOfIncorporationOrResidenceOfSubsidiary": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CountryOfIncorporationOrResidenceOfSubsidiary",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country of incorporation of subsidiary",
        "terseLabel": "Country of incorporation or residence of subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The country in which a subsidiary of the entity is incorporated. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r54",
      "r59",
      "r142",
      "r146"
     ]
    },
    "dei_CountryRegion": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CountryRegion",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Country Region",
        "documentation": "Region code of country"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CouponAsOfDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CouponAsOfDate",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Coupon As Of Date",
        "verboseLabel": "Coupon date",
        "definitionGuidance": "Coupon date, as of",
        "terseLabel": "Coupon date",
        "documentation": "Coupon as of date."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CouponInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CouponInterestRate",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Coupon Interest Rate",
        "terseLabel": "Coupon rate",
        "documentation": "Coupon interest rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CouponRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CouponRate",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Coupon rate",
        "terseLabel": "Coupon rate",
        "documentation": "Coupon rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CouponRateInterestDescription": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CouponRateInterestDescription",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Coupon rate interest description",
        "terseLabel": "Coupon rate",
        "documentation": "Coupon rate interest description."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CouponRateMaturity": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CouponRateMaturity",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Coupon Rate Maturity",
        "terseLabel": "Coupon rate maturity",
        "documentation": "Coupon rate maturity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CouponsOnPerpetualSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CouponsOnPerpetualSecurities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Coupons on perpetual securities",
        "negatedLabel": "Coupons on perpetual securities",
        "documentation": "Coupons on perpetual securities."
       }
      }
     },
     "auth_ref": []
    },
    "dei_CoverAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CoverAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cover [Abstract]",
        "documentation": "Cover page."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CreditDefaultSwap1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditDefaultSwap1Member",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit Default Swap 1 [Member]",
        "terseLabel": "CDSs [Member]",
        "documentation": "Credit default swap 1."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CreditDerivativeFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CreditDerivativeFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit derivative, fair value",
        "terseLabel": "Fair value",
        "periodStartLabel": "At January\u00a01,",
        "periodEndLabel": "At December\u00a031,"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of a credit derivative. [Refer: At fair value [member]; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r320"
     ]
    },
    "ifrs-full_CreditDerivativeNominalAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CreditDerivativeNominalAmount",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit derivative, nominal amount",
        "terseLabel": "Notional",
        "periodStartLabel": "At January\u00a01,",
        "periodEndLabel": "At December\u00a031,"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal amount of a credit derivative. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r320"
     ]
    },
    "ifrs-full_CreditImpairmentOfFinancialInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CreditImpairmentOfFinancialInstrumentsAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit impairment of financial instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337",
      "r566",
      "r572"
     ]
    },
    "ifrs-full_CreditImpairmentOfFinancialInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CreditImpairmentOfFinancialInstrumentsDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit impairment of financial instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all statuses of credit impairment of financial instruments. A financial instrument is credit-impaired when one or more events that have a detrimental impact on the estimated future cash flows of that financial instrument have occurred. This member also represents the standard value for the 'Credit impairment of financial instruments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337",
      "r566",
      "r572"
     ]
    },
    "aeg_CreditRatingGeneralAccountInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditRatingGeneralAccountInvestmentsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit rating general account investments [member]",
        "terseLabel": "Credit rating general account investments [member]",
        "documentation": "Credit rating general account investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CreditRatingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditRatingMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "A Credit Rating [member]",
        "terseLabel": "A credit rating [member]",
        "documentation": "A credit rating."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CreditRiskConcentrations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditRiskConcentrations",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit risk concentrations",
        "terseLabel": "Credit risk concentrations",
        "documentation": "Credit risk concentrations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CreditRiskConcentrationsCreditRating": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditRiskConcentrationsCreditRating",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit risk concentrations credit rating",
        "terseLabel": "Credit risk concentrations credit rating",
        "documentation": "Credit risk concentrations credit rating."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CreditRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CreditRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit risk [member]",
        "terseLabel": "Credit risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the risk that one party to a financial instrument will cause a financial loss for the other party by failing to discharge an obligation. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r249",
      "r250",
      "r251",
      "r729"
     ]
    },
    "aeg_CreditRiskSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditRiskSecurities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": "aeg_Collateral",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit Risk Securities",
        "terseLabel": "Securities collateral",
        "documentation": "Credit risk securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CreditSpreadAdjustmentPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditSpreadAdjustmentPercentage",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit Spread Adjustment Percentage",
        "terseLabel": "Credit spread adjustment percentage",
        "documentation": "Credit spread adjustment percentage."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CreditSpreadMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CreditSpreadMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Credit Spread [member]",
        "terseLabel": "Credit spread [member]",
        "documentation": "Credit spread."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CriteriaAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CriteriaAxis",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Criteria [Axis]",
        "documentation": "Criteria."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CriteriaDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CriteriaDomain",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Criteria [Domain]",
        "documentation": "Criteria."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CriteriaOneForDirectorsAppointmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CriteriaOneForDirectorsAppointmentMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Criteria One For Directors Appointment [Member]",
        "documentation": "Criteria one for directors appointment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CriteriaTwoForDirectorsAppointmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CriteriaTwoForDirectorsAppointmentMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Criteria Two For Directors Appointment [Member]",
        "documentation": "Criteria two for directors appointment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CriticalAccountingEstimatesAndJudgmentInApplyingAccountingPoliciesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CriticalAccountingEstimatesAndJudgmentInApplyingAccountingPoliciesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Critical Accounting Estimates and Judgment in Applying Accounting Policies [Abstract]",
        "documentation": "Critical Accounting Estimates and Judgment in Applying Accounting Policies."
       }
      }
     },
     "auth_ref": []
    },
    "srt_CurrencyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "CurrencyAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency [Axis]",
        "documentation": "Information by currency."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CurrencyPairingAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CurrencyPairingAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency Pairing [Axis]",
        "documentation": "Currency pairing."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CurrencyPairingDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CurrencyPairingDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency Pairing [Domain]",
        "documentation": "Currency pairing."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_CurrencyRevaluationOfOtherEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CurrencyRevaluationOfOtherEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_HybridLeverage",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency Revaluation Of Other Equity Instruments",
        "terseLabel": "Currency revaluation other equity instruments",
        "documentation": "Currency revaluation of other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrencyRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrencyRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency risk [member]",
        "terseLabel": "Currency risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a type of market risk representing the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in foreign exchange rates. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r249",
      "r250",
      "r251",
      "r253",
      "r356"
     ]
    },
    "ifrs-full_CurrencySwapContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrencySwapContractMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currency swap contract [member]",
        "terseLabel": "Currency swap contract [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a currency swap contract. [Refer: Swap contract [member]]"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_Current": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Current",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfAccruedIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current",
        "verboseLabel": "Current",
        "documentation": "Current."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current and deferred tax relating to items credited (charged) directly to equity",
        "negatedTotalLabel": "Total income tax recognized directly in retained earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "The aggregate current and deferred tax relating to particular items that are charged or credited directly to equity, for example: (a) an adjustment to the opening balance of retained earnings resulting from either a change in accounting policy that is applied retrospectively or the correction of an error; and (b) amounts arising on initial recognition of the equity component of a compound financial instrument. [Refer: Deferred tax relating to items credited (charged) directly to equity; Retained earnings; Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r3",
      "r457"
     ]
    },
    "ifrs-full_CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current and deferred tax relating to items charged or credited directly to equity [abstract]",
        "terseLabel": "Income tax related to equity instruments and other"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current assets",
        "totalLabel": "Total current assets",
        "terseLabel": "Current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that the entity (a) expects to realise or intends to sell or consume in its normal operating cycle; (b) holds primarily for the purpose of trading; (c) expects to realise within twelve months after the reporting period; or (d) classifies as cash or cash equivalents (as defined in IAS 7) unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. [Refer: Assets]"
       }
      }
     },
     "auth_ref": [
      "r153",
      "r643",
      "r705"
     ]
    },
    "aeg_CurrentFinancialLiabilitiesExcludingTradePayablesAndOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CurrentFinancialLiabilitiesExcludingTradePayablesAndOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current financial liabilities excluding trade payables and other provisions",
        "terseLabel": "Current financial liabilities excluding trade payables and other provisions",
        "documentation": "Current financial liabilities excluding trade payables and other provisions."
       }
      }
     },
     "auth_ref": []
    },
    "dei_CurrentFiscalYearEndDate": {
     "xbrltype": "gMonthDayItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "CurrentFiscalYearEndDate",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current Fiscal Year End Date",
        "documentation": "End date of current fiscal year in the format --MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 30.0
      },
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current liabilities",
        "totalLabel": "Current liabilities",
        "terseLabel": "Current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that: (a) the entity expects to settle in its normal operating cycle; (b) the entity holds primarily for the purpose of trading; (c) are due to be settled within twelve months after the reporting period; or (d) the entity does not have the right at the end of the reporting period to defer settlement for at least twelve months after the reporting period."
       }
      }
     },
     "auth_ref": [
      "r155",
      "r644",
      "r705"
     ]
    },
    "aeg_CurrentLoansToSubsidiariesJointVenturesAndAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "CurrentLoansToSubsidiariesJointVenturesAndAssociates",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current Loans to Subsidiaries, Joint Ventures and Associates",
        "terseLabel": "Current",
        "documentation": "Current loans to subsidiaries, joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current provisions",
        "terseLabel": "Current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current provisions, including provisions for employee benefits. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r631"
     ]
    },
    "ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentServiceCostNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail": {
       "parentTag": "aeg_EmployeeBenefitObligationsExpenses",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current service cost, net defined benefit liability (asset)",
        "terseLabel": "Current year service cost"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r22",
      "r473"
     ]
    },
    "ifrs-full_CurrentTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax expense (income)",
        "terseLabel": "Current year"
       }
      }
     },
     "auth_ref": [
      "r678",
      "r764"
     ]
    },
    "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax expense (income) and adjustments for current tax of prior periods",
        "negatedTotalLabel": "Total current tax"
       }
      }
     },
     "auth_ref": [
      "r903"
     ]
    },
    "ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax expense (income) and adjustments for current tax of prior periods [abstract]",
        "terseLabel": "Current tax"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_CurrentTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTaxLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current tax liabilities",
        "terseLabel": "Income tax payable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current tax for current and prior periods to the extent unpaid. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period."
       }
      }
     },
     "auth_ref": [
      "r634"
     ]
    },
    "ifrs-full_CurrentTradeReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "CurrentTradeReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Current trade receivables",
        "terseLabel": "Current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current trade receivables. [Refer: Trade receivables]"
       }
      }
     },
     "auth_ref": [
      "r779",
      "r785",
      "r786"
     ]
    },
    "cyd_CybersecurityRiskBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r803",
      "r892"
     ]
    },
    "cyd_CybersecurityRiskBoardOfDirectorsOversightTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskBoardOfDirectorsOversightTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Board of Directors Oversight [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r803",
      "r892"
     ]
    },
    "cyd_CybersecurityRiskManagementExpertiseOfManagementResponsibleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementExpertiseOfManagementResponsibleTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Expertise of Management Responsible [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r805",
      "r894"
     ]
    },
    "cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Positions or Committees Responsible [Flag]"
       }
      }
     },
     "auth_ref": [
      "r805",
      "r894"
     ]
    },
    "cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleReportToBoardFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementPositionsOrCommitteesResponsibleReportToBoardFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]"
       }
      }
     },
     "auth_ref": [
      "r807",
      "r896"
     ]
    },
    "cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementPositionsOrCommitteesResponsibleTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Positions or Committees Responsible [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r805",
      "r894"
     ]
    },
    "cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r798",
      "r887"
     ]
    },
    "cyd_CybersecurityRiskManagementProcessesIntegratedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementProcessesIntegratedFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Processes Integrated [Flag]"
       }
      }
     },
     "auth_ref": [
      "r799",
      "r888"
     ]
    },
    "cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementProcessesIntegratedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Processes Integrated [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r799",
      "r888"
     ]
    },
    "cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementStrategyAndGovernanceAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management, Strategy, and Governance [Abstract]"
       }
      }
     },
     "auth_ref": [
      "r797",
      "r886"
     ]
    },
    "cyd_CybersecurityRiskManagementStrategyAndGovernanceLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementStrategyAndGovernanceLineItems",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management, Strategy, and Governance [Line Items]"
       }
      }
     },
     "auth_ref": [
      "r797",
      "r886"
     ]
    },
    "cyd_CybersecurityRiskManagementStrategyAndGovernanceTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementStrategyAndGovernanceTable",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management, Strategy, and Governance [Table]"
       }
      }
     },
     "auth_ref": [
      "r797",
      "r886"
     ]
    },
    "cyd_CybersecurityRiskManagementThirdPartyEngagedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskManagementThirdPartyEngagedFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Management Third Party Engaged [Flag]"
       }
      }
     },
     "auth_ref": [
      "r800",
      "r889"
     ]
    },
    "cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]"
       }
      }
     },
     "auth_ref": [
      "r802",
      "r891"
     ]
    },
    "cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r802",
      "r891"
     ]
    },
    "cyd_CybersecurityRiskProcessForInformingBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskProcessForInformingBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r803",
      "r892"
     ]
    },
    "cyd_CybersecurityRiskProcessForInformingManagementOrCommitteesResponsibleTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskProcessForInformingManagementOrCommitteesResponsibleTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r806",
      "r895"
     ]
    },
    "cyd_CybersecurityRiskRoleOfManagementTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskRoleOfManagementTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Role of Management [Text Block]"
       }
      }
     },
     "auth_ref": [
      "r804",
      "r893"
     ]
    },
    "cyd_CybersecurityRiskThirdPartyOversightAndIdentificationProcessesFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/cyd/2025",
     "localname": "CybersecurityRiskThirdPartyOversightAndIdentificationProcessesFlag",
     "presentation": [
      "http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]"
       }
      }
     },
     "auth_ref": [
      "r801",
      "r890"
     ]
    },
    "aeg_DawnHoldingsLlcWilmingtonMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DawnHoldingsLlcWilmingtonMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dawn Holdings LLC, Wilmington [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtInstrument1Axis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtInstrument1Axis",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Instrument 1 [axis]",
        "terseLabel": "Debt instrument 1 [axis]",
        "documentation": "Debt instrument 1."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtInstrumentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtInstrumentDomain",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Instrument [domain]",
        "terseLabel": "Debt Instrument [domain]",
        "documentation": "Debt Instrument [domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtInstrumentRedeemedAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtInstrumentRedeemedAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Instrument Redeemed Amount",
        "terseLabel": "Debt instrument redeemed amount",
        "documentation": "Debt instrument redeemed amount."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DebtInstrumentsAmountContributedToFairValueOfPlanAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt instruments, amount contributed to fair value of plan assets",
        "terseLabel": "Debt instrument"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r686",
      "r769"
     ]
    },
    "ifrs-full_DebtInstrumentsPercentageContributedToFairValueOfPlanAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DebtInstrumentsPercentageContributedToFairValueOfPlanAssets",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt instruments, percentage contributed to fair value of plan assets",
        "terseLabel": "Debt instrument"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] [Contrast: Debt instruments, amount contributed to fair value of plan assets]"
       }
      }
     },
     "auth_ref": [
      "r911"
     ]
    },
    "ifrs-full_DebtSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DebtSecurities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt instruments issued",
        "terseLabel": "Borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of instruments issued by the entity that represent indebtedness."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_DebtSecuritiesAndMoneyMarketInstrumentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecuritiesAndMoneyMarketInstrumentMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities And Money Market Instrument [Member]",
        "terseLabel": "Debt Securities And Money Market Instruments [Member]",
        "documentation": "Debt securities and money market instrument."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtSecuritiesAndMoneyMarketInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecuritiesAndMoneyMarketInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt securities and money market instruments[member]",
        "terseLabel": "Debt securities and money market instruments [member]",
        "documentation": "Debt securities and money market instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtSecuritiesAndMoneyMarketInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecuritiesAndMoneyMarketInvestmentsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities And Money Market Investments [member]",
        "terseLabel": "Debt securities and money market investments [member]",
        "documentation": "Debt securities and money market investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtSecuritiesHeldAtAmortizedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecuritiesHeldAtAmortizedCostMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt securities held at amortized cost [Member]",
        "terseLabel": "Debt securities - held at amortized cost [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtSecuritiesMeasuredAtFVOCIMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecuritiesMeasuredAtFVOCIMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt securities measured at F V O C I [Member]",
        "verboseLabel": "Debt securities measured at FVOCI [member]",
        "documentation": "Debt securities measured at FVOCI."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DebtSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DebtSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksTables",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt securities [member]",
        "verboseLabel": "Financial assets measured at FVOCI - with recycling [member]",
        "terseLabel": "Debt securities [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for instruments held by the entity that represent indebtedness."
       }
      }
     },
     "auth_ref": [
      "r709",
      "r712"
     ]
    },
    "aeg_DebtSecuritiesMoneyMarketAndOtherShorttermInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecuritiesMoneyMarketAndOtherShorttermInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Securities Money Market And Other Shortterm Instruments [Member]",
        "documentation": "Debt securities money market and other short term instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DebtSecurityExpectedCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DebtSecurityExpectedCreditLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": "aeg_ExpectedCreditLoss",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Security Expected Credit Loss",
        "terseLabel": "Debt securities",
        "documentation": "Debt security expected credit loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeclarationOfDividendPerShareInterimAndFinalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeclarationOfDividendPerShareInterimAndFinalMember",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Declaration Of Dividend Per Share Interim And Final [Member]",
        "terseLabel": "Declaration Of Dividend Per Share Interim And Final [member]",
        "documentation": "Declaration of dividend per share interim and final."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DecreaseByFifteenPercentageOfGBPCurrenciesRelativeToEuroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseByFifteenPercentageOfGBPCurrenciesRelativeToEuroMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease By Fifteen Percentage Of GBP Currencies Relative To Euro [member]",
        "terseLabel": "Decrease by 15% of GBP currencies relative to Euro [member]",
        "documentation": "Decrease by fifteen percentage of GBP currencies relative to Euro."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DecreaseByFifteenPercentageOfNonEuroCurrenciesRelativeToEuroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseByFifteenPercentageOfNonEuroCurrenciesRelativeToEuroMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease By Fifteen Percentage Of Non Euro Currencies Relative To Euro [member]",
        "terseLabel": "Decrease by 15% of non Euro currencies relative to Euro [member]",
        "documentation": "Decrease by fifteen percentage of non Euro currencies relative to Euro."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DecreaseByFifteenPercentageOfUSDCurrenciesRelativeToEuroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseByFifteenPercentageOfUSDCurrenciesRelativeToEuroMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease By Fifteen Percentage Of USD Currencies Relative To Euro [member]",
        "terseLabel": "Decrease by 15% of USD currencies relative to Euro [member]",
        "documentation": "Decrease by fifteen percentage of USD currencies relative to Euro."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DecreaseInCashCapitalDueToShareBuyBacks": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseInCashCapitalDueToShareBuyBacks",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease in Cash Capital Due to Share Buy Backs",
        "terseLabel": "Decrease in cash capital due to share buy backs",
        "documentation": "Decrease in cash capital due to share buy backs."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DecreaseInEquitableSolvencyTwoRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseInEquitableSolvencyTwoRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease In Equitable Solvency Two Ratio",
        "documentation": "Decrease in equitable solvency two ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DecreaseOfMarketInterestRatesHundredBasisPointsEffectOnYieldCurveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseOfMarketInterestRatesHundredBasisPointsEffectOnYieldCurveMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease of Market Interest Rates Hundred Basis Points Effect on Yield Curve [Member]",
        "terseLabel": "100 bps decrease - Yield curve [member]",
        "documentation": "Decrease of market interest rates hundred basis points effect on yield curve."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DecreaseThroughBenefitsPaidReimbursementRightsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DecreaseThroughBenefitsPaidReimbursementRightsAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease in reimbursement rights related to defined benefit obligation, resulting from benefits paid",
        "negatedLabel": "Benefits paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in reimbursement rights related to defined benefit obligation, resulting from benefits paid. [Refer: Reimbursement rights related to defined benefit obligation, at fair value]"
       }
      }
     },
     "auth_ref": [
      "r29"
     ]
    },
    "aeg_DecreaseThroughDerecognitionFinancialAssetsOtherThanWriteOffs": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DecreaseThroughDerecognitionFinancialAssetsOtherThanWriteOffs",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease through derecognition, financial assets other than write offs",
        "terseLabel": "Financial assets derecognized during the period other than write-offs",
        "documentation": "Decrease through derecognition, financial assets other than write offs."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DecreaseThroughTransferToLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSaleOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DecreaseThroughTransferToLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSaleOtherProvisions",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Decrease through transfer to liabilities included in disposal groups classified as held for sale, other provisions",
        "negatedTerseLabel": "Disposal of a business"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in other provisions resulting from the transfer of those provisions to liabilities included in disposal groups classified as held for sale. [Refer: Other provisions; Disposal groups classified as held for sale [member]]"
       }
      }
     },
     "auth_ref": [
      "r921"
     ]
    },
    "aeg_DeferredCosts1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredCosts1",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Costs1",
        "negatedLabel": "Costs deferred during the year",
        "documentation": "Deferred costs."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 5.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 49.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Expenses",
        "terseLabel": "Deferred expenses",
        "documentation": "Deferred expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredExpensesAndOtherIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredExpensesAndOtherIntangibleAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Expenses And Other Intangible Assets [member]",
        "terseLabel": "Deferred expenses, VOBA and other intangible assets [member]",
        "verboseLabel": "Deferred expenses and other intangible assets [member]",
        "documentation": "Deferred expenses and other intangible assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredExpensesCurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredExpensesCurrent",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Expenses Current",
        "verboseLabel": "Current",
        "documentation": "Deferred expenses current."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredExpensesNoncurrent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredExpensesNoncurrent",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Expenses Noncurrent",
        "verboseLabel": "Non-current",
        "documentation": "Deferred expenses noncurrent."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredGains": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredGains",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 44.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred gains",
        "terseLabel": "Deferred gains",
        "documentation": "Deferred gains."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredGainsRecognizedDirectlyInEquityToBeReclassifiedIntoProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredGainsRecognizedDirectlyInEquityToBeReclassifiedIntoProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Gains Recognized Directly In Equity To Be Reclassified Into Profit Or Loss",
        "terseLabel": "Deferred gain recognized directly to equity",
        "documentation": "Deferred gains recognized directly in equity to be reclassified into profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredTaxAssetLiabilityOtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTaxAssetLiabilityOtherMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Tax Asset Liability Other [member]",
        "terseLabel": "Other [member]",
        "documentation": "Deferred Tax Asset Liability Other [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 63.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax assets",
        "terseLabel": "Deferred tax assets",
        "verboseLabel": "Deferred tax assets recognized for tax losses, gross"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r8",
      "r462",
      "r635",
      "r639"
     ]
    },
    "ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxAssetsAndLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax assets and liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredTaxAssetsAndLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTaxAssetsAndLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Tax Assets And Liabilities [line items]",
        "terseLabel": "Deferred tax assets and liabilities [Line Items]",
        "documentation": "Deferred tax assets and liabilities line items"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredTaxAssetsAndLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTaxAssetsAndLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Tax Assets And Liabilities [table]",
        "terseLabel": "Deferred Tax Assets And Liabilities [table]",
        "documentation": "Deferred tax assets and liabilities table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredTaxAssetsDependentOnFutureTaxableProfits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTaxAssetsDependentOnFutureTaxableProfits",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Tax Assets Dependent On Future Taxable Profits",
        "terseLabel": "Deferred tax asset dependent on future taxable profits",
        "documentation": "Deferred tax asset dependent on future taxable profits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredTaxAssetsRecoverableThroughRetentionOfInvestmentUntillRecoveryOrMaturity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTaxAssetsRecoverableThroughRetentionOfInvestmentUntillRecoveryOrMaturity",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Tax Assets Recoverable Through Retention Of Investment Untill Recovery Or Maturity",
        "terseLabel": "Deferred tax asset recoverable through retention of investments until recovery or maturity",
        "documentation": "Deferred tax assets recoverable through retention of investment untill recovery or maturity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income)",
        "terseLabel": "Deferred tax assets recognized for tax losses, tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]"
       }
      }
     },
     "auth_ref": [
      "r9",
      "r463"
     ]
    },
    "ifrs-full_DeferredTaxExpenseIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income) [abstract]",
        "terseLabel": "Deferred tax"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income) recognised in profit or loss",
        "totalLabel": "Total deferred tax",
        "terseLabel": "Charged to income statement"
       }
      }
     },
     "auth_ref": [
      "r9",
      "r463"
     ]
    },
    "ifrs-full_DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income) relating to origination and reversal of temporary differences",
        "terseLabel": "(Origination) / reversal of temporary differences"
       }
      }
     },
     "auth_ref": [
      "r680",
      "r766"
     ]
    },
    "ifrs-full_DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax expense (income) relating to tax rate changes or imposition of new taxes",
        "terseLabel": "Changes in tax rates / bases"
       }
      }
     },
     "auth_ref": [
      "r681",
      "r767"
     ]
    },
    "ifrs-full_DeferredTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 43.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax liabilities",
        "verboseLabel": "Deferred tax liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]]"
       }
      }
     },
     "auth_ref": [
      "r8",
      "r462",
      "r635",
      "r639"
     ]
    },
    "ifrs-full_DeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax liability (asset)",
        "negatedTotalLabel": "Total net deferred tax liability / (asset)",
        "negatedPeriodStartLabel": "Beginning balance",
        "negatedPeriodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]"
       }
      }
     },
     "auth_ref": [
      "r8",
      "r462"
     ]
    },
    "ifrs-full_DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred tax relating to items credited (charged) directly to equity",
        "verboseLabel": "Charged to OCI"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deferred tax related to items credited (charged) directly to equity. [Refer: Deferred tax expense (income)]"
       }
      }
     },
     "auth_ref": [
      "r3",
      "r457"
     ]
    },
    "aeg_DeferredTransactionCostsForInvestmentManagementServicesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTransactionCostsForInvestmentManagementServicesMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Transaction Costs For Investment Management Services [Member]",
        "terseLabel": "Deferred Transaction Costs [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DeferredTransactionExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DeferredTransactionExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deferred Transaction Expenses",
        "terseLabel": "Deferred transaction expenses",
        "documentation": "Deferred transaction expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Deferredconsiderationatacquisitiondate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Deferredconsiderationatacquisitiondate",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "DeferredConsiderationAtAcquisitionDate",
        "documentation": "DeferredConsiderationAtAcquisitionDate"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DefinedBenefitContributionPaid": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DefinedBenefitContributionPaid",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit contribution paid",
        "terseLabel": "Contributions were paid into scheme",
        "documentation": "Defined benefit contribution paid."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DefinedBenefitObligationAtPresentValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DefinedBenefitObligationAtPresentValue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail": {
       "parentTag": "ifrs-full_SurplusDeficitInPlan",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit obligation, at present value",
        "terseLabel": "Present value of wholly or partly funded obligations"
       }
      },
      "en": {
       "role": {
        "documentation": "The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value]"
       }
      }
     },
     "auth_ref": [
      "r919"
     ]
    },
    "aeg_DefinedBenefitPlanExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DefinedBenefitPlanExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit plan expense",
        "negatedLabel": "Defined benefit expenses",
        "documentation": "Defined benefit plan expense."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DefinedBenefitPlansAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DefinedBenefitPlansAxis",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit plans [axis]",
        "terseLabel": "Defined benefit plans [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r468"
     ]
    },
    "aeg_DefinedBenefitPlansDeficit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DefinedBenefitPlansDeficit",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit plans deficit",
        "terseLabel": "Defined benefit plans deficit",
        "documentation": "Defined benefit plans deficit"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DefinedBenefitPlansDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DefinedBenefitPlansDomain",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit plans [domain]",
        "terseLabel": "Defined benefit plans [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for post-employment benefit plans other than defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods. It also represents the standard value for the 'Defined benefit plans' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r468"
     ]
    },
    "aeg_DefinedBenefitPlansOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DefinedBenefitPlansOther",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plans Other",
        "terseLabel": "Other",
        "documentation": "Defined benefit plans other."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DefinedBenefitUnfundedPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DefinedBenefitUnfundedPlans",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined benefit unfunded plans",
        "terseLabel": "Defined benefit plans unfunded",
        "documentation": "Defined benefit unfunded plans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DefinedContributionsIncludedInEmployeeExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DefinedContributionsIncludedInEmployeeExpenses",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Contributions Included In Employee Expenses",
        "verboseLabel": "Defined contribution expenses",
        "documentation": "Defined contributions included in employee expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DemographicActuarialAssumptionOnMortalityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DemographicActuarialAssumptionOnMortalityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Demographic actuarial assumption on mortality rates [member]",
        "terseLabel": "Demographic actuarial assumption on mortality rates by 10% Variation [member]",
        "documentation": "Demographic actuarial assumption on mortality rates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DepositsAtAmortisedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepositsAtAmortisedCost",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits at amortised cost",
        "terseLabel": "Amortized cost, Deposits"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deposit liabilities held by the entity at amortised cost. [Refer: Financial liabilities at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_DepositsWithFinancialInstitutionsHeldAtAmortizedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DepositsWithFinancialInstitutionsHeldAtAmortizedCostMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits with financial institutions held at amortized cost [Member]",
        "terseLabel": "Deposits with financial institutions - held at amortized cost [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DepositsWithFinancialInstitutionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DepositsWithFinancialInstitutionsMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Deposits With Financial Institutions [member]",
        "disclosureGuidance": "Deposits with financial institutions [member]",
        "documentation": "Deposits with financial institutions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DepreciationAndAmortisationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepreciationAndAmortisationExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation and amortisation expense",
        "negatedLabel": "Depreciation and amortization"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives."
       }
      }
     },
     "auth_ref": [
      "r163",
      "r362",
      "r370",
      "r607",
      "r677",
      "r782"
     ]
    },
    "ifrs-full_DepreciationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DepreciationExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation expense",
        "negatedLabel": "Depreciation"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_DepreciationRightOfUseAssetsRecognizedInProfitAndLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DepreciationRightOfUseAssetsRecognizedInProfitAndLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation Right Of Use Assets Recognized In Profit And Loss",
        "negatedLabel": "Depreciation through income statement",
        "documentation": "Depreciation right of use assets recognized in profit and loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativeFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativeFinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 67.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial assets",
        "verboseLabel": "Derivatives",
        "terseLabel": "Derivative assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_DerivativeFinancialInstrumentsAndHedgingActivitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativeFinancialInstrumentsAndHedgingActivitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial instruments and hedging activities [text block]",
        "terseLabel": "Summary of Derivative Asset and Liability",
        "documentation": "The entire disclosure for derivative financial instruments and hedging activities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativeFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativeFinancialLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial liabilities",
        "verboseLabel": "Derivatives",
        "terseLabel": "Derivative liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_DerivativeFinancialLiabilitiesUndiscountedCashInflowsGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativeFinancialLiabilitiesUndiscountedCashInflowsGross",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial liabilities undiscounted cash inflows gross",
        "terseLabel": "Gross settled cash inflows",
        "documentation": "Derivative financial liabilities undiscounted cash inflows gross."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DerivativeFinancialLiabilitiesUndiscountedCashInflowsNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativeFinancialLiabilitiesUndiscountedCashInflowsNet",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Financial Liabilities Undiscounted Cash Inflows Net",
        "terseLabel": "Net settled cash inflows",
        "documentation": "Derivative financial liabilities undiscounted cash inflows net."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DerivativeFinancialLiabilitiesUndiscountedCashOutflowsGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativeFinancialLiabilitiesUndiscountedCashOutflowsGross",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative financial liabilities undiscounted cash outflows gross",
        "terseLabel": "Gross settled cash outflows",
        "documentation": "Derivative financial liabilities undiscounted cash outflows gross."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DerivativeFinancialLiabilitiesUndiscountedCashOutflowsNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativeFinancialLiabilitiesUndiscountedCashOutflowsNet",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative Financial Liabilities Undiscounted Cash Outflows Net",
        "terseLabel": "Net settled cash outflows",
        "documentation": "Derivative financial liabilities undiscounted cash outflows net."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DerivativeLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativeLiabilitiesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivative liabilities [member]",
        "terseLabel": "Derivatives [member]",
        "verboseLabel": "Derivatives [member]",
        "documentation": "Derivative liabilities for financial liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativesAmountContributedToFairValueOfPlanAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativesAmountContributedToFairValueOfPlanAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail": {
       "parentTag": "ifrs-full_AssetsOfBenefitPlan",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives, amount contributed to fair value of plan assets",
        "terseLabel": "Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount derivatives contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r687"
     ]
    },
    "aeg_DerivativesHeldAsAnEconomicHedgeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativesHeldAsAnEconomicHedgeMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives held as an economic hedge [member]",
        "terseLabel": "Derivatives held as an economic hedge [member]",
        "documentation": "Derivatives held as an economic hedge."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksTables",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives [member]",
        "definitionGuidance": "Derivatives assets [member]",
        "terseLabel": "Derivatives [member]",
        "verboseLabel": "Derivative [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments or other contracts within the scope of IFRS 9 with all three of the following characteristics: (a) Their value changes in response to the change in a specified interest rate, financial instrument price, commodity price, foreign exchange rate, index of prices or rates, credit rating or credit index, or other variable, provided in the case of a non-financial variable that the variable is not specific to a party to the contract (sometimes called the \u2018underlying\u2019); (b) They require no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; (c) They are settled at a future date. [Refer: Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r709",
      "r712",
      "r737",
      "r753"
     ]
    },
    "aeg_DerivativesNotDesignatedAsHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativesNotDesignatedAsHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives not designated as hedges [member]",
        "verboseLabel": "Derivatives not designated as hedges [member]",
        "documentation": "Derivatives not designated as hedges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DerivativesNotDesignatedAsHedgesWhereAegonBearsTheRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativesNotDesignatedAsHedgesWhereAegonBearsTheRiskMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives Not Designated As Hedges Where Aegon Bears The Risk [Member]",
        "terseLabel": "Derivatives not designated as hedges - where Aegon bears the risk [member]",
        "documentation": "Derivatives not designated as hedges - where Aegon bears the risk."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DerivativesPercentageContributedToFairValueOfPlanAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DerivativesPercentageContributedToFairValueOfPlanAssets",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives, percentage contributed to fair value of plan assets",
        "terseLabel": "Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage derivatives contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] [Contrast: Derivatives, amount contributed to fair value of plan assets]"
       }
      }
     },
     "auth_ref": [
      "r912"
     ]
    },
    "aeg_DerivativesWithNegativeValuesClassifiedUnderOtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DerivativesWithNegativeValuesClassifiedUnderOtherLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Derivatives With Negative Values Classified Under Other Liabilities",
        "terseLabel": "Derivatives with negative values classified under other liabilities",
        "documentation": "Derivatives with negative values classified under other liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionAboutBasisPoint": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionAboutBasisPoint",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description About Basis Point",
        "terseLabel": "Basis point description",
        "documentation": "Description about basis point."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfAccountingPolicyForAssetsAndLiabilitiesRelatingToEmployeeBenefitsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForAssetsAndLiabilitiesRelatingToEmployeeBenefitsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for assets and liabilities relating to employee benefits explanatory",
        "terseLabel": "Assets and liabilities relating to employee benefits",
        "documentation": "Description of accounting policy for assets and liabilities relating to employee benefits explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfAccountingPolicyForDeferredExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForDeferredExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for deferred expenses explanatory",
        "terseLabel": "Deferred expenses",
        "documentation": "Description of accounting policy for deferred expenses explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfAccountingPolicyForEquityExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForEquityExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Accounting Policy For Equity Explanatory [text block]",
        "terseLabel": "Equity",
        "documentation": "Description of accounting policy for equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfAccountingPolicyForEventsAfterReportingPeriodExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForEventsAfterReportingPeriodExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for events after reporting period [text block]",
        "terseLabel": "Events after the reporting period",
        "documentation": "The description of the entity's accounting policy for events after reporting period."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFeeAndCommissionIncomeAndExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFeeAndCommissionIncomeAndExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for fee and commission income and expense [text block]",
        "terseLabel": "Fee and commission income"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFinancialAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for financial assets [text block]",
        "terseLabel": "Financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for financial liabilities [text block]",
        "terseLabel": "Financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for foreign currency translation [text block]",
        "terseLabel": "Foreign exchange translation"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for foreign currency translation."
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for impairment of non-financial assets [text block]",
        "terseLabel": "Impairment of assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for the impairment of non-financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForIncomeTaxExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for income tax [text block]",
        "terseLabel": "Taxation"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for income tax."
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInsuranceContracts": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInsuranceContracts",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for insurance contracts and related assets, liabilities, income and expense [text block]",
        "terseLabel": "Insurance contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for insurance contracts and related assets, liabilities, income and expense."
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "aeg_DescriptionOfAccountingPolicyForInsuranceRevenueAndInsuranceServiceexpensesExplanatory": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForInsuranceRevenueAndInsuranceServiceexpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Accounting Policy For Insurance Revenue And Insurance ServiceExpenses Explanatory",
        "terseLabel": "Insurance revenue and Insurance service\u00a0expenses",
        "documentation": "Description of accounting policy for insurance revenue and insurance service\u00a0expenses explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for intangible assets and goodwill [text block]",
        "terseLabel": "Intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for intangible assets and goodwill. [Refer: Intangible assets and goodwill]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "aeg_DescriptionOfAccountingPolicyForInvestmentContractsWithDiscretionaryParticipatingFeaturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyForInvestmentContractsWithDiscretionaryParticipatingFeaturesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Accounting Policy For Investment Contracts With Discretionary Participating Features Explanatory",
        "terseLabel": "Investment contracts with discretionary participating features",
        "documentation": "Description of accounting policy for investment contracts with discretionary participating features explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInvestmentInAssociates",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for investment in associates [text block]",
        "terseLabel": "Investments in associates"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for investments in associates. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for investment property [text block]",
        "terseLabel": "Investment properties"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForInvestmentsInJointVentures",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for investments in joint ventures [text block]",
        "terseLabel": "Investments in joint arrangements"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for investments in joint ventures. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForLeasesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for leases [text block]",
        "terseLabel": "Leases"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for leases. A lease is an agreement whereby the lessor conveys to the lessee in return for a payment or series of payments the right to use an asset for an agreed period of time."
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "ifrs-full_DescriptionOfAccountingPolicyForReinsuranceExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyForReinsuranceExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for reinsurance [text block]",
        "terseLabel": "Reinsurance contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's material accounting policy information for reinsurance."
       }
      }
     },
     "auth_ref": [
      "r949"
     ]
    },
    "aeg_DescriptionOfAccountingPolicyOfInsuranceFinanceExpensesExplanatory.PolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyOfInsuranceFinanceExpensesExplanatory.PolicyTextBlock",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Accounting Policy Of Insurance Finance Expenses Explanatory. [Policy Text Block]",
        "terseLabel": "Insurance finance expenses",
        "documentation": "Description of accounting policy of insurance finance expenses explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfAccountingPolicyOfOtherOperatingExpensesPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAccountingPolicyOfOtherOperatingExpensesPolicyTextBlock",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Accounting Policy Of Other Operating Expenses [Policy Text Block]",
        "terseLabel": "Other operating expenses",
        "documentation": "Description of accounting policy of other operating expenses."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of accounting policy for determining components of cash and cash equivalents [text block]",
        "terseLabel": "Cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the entity's accounting policy used to determine the components of cash and cash equivalents. [Refer: Cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r125",
      "r447"
     ]
    },
    "aeg_DescriptionOfAdjustmentsForImpairmentLossRecognizedInProfitOrLossGoodwill": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfAdjustmentsForImpairmentLossRecognizedInProfitOrLossGoodwill",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of Adjustments for Impairment Loss Recognized in Profit or Loss Goodwill",
        "terseLabel": "Description of adjustments for impairment loss recognized in profit or loss goodwill",
        "documentation": "Description of adjustments for impairment loss recognized in profit or loss goodwill."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfExpectedTimingOfOutflowsProvisions": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfExpectedTimingOfOutflowsProvisions",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Expected Timing Of Outflows Provisions",
        "terseLabel": "Description of expected timing of outflows provisions",
        "documentation": "Description of expected timing of outflows provisions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfLineItemInStatementOfFinancialPositionThatIncludesHedgedItem": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfLineItemInStatementOfFinancialPositionThatIncludesHedgedItem",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of line item in statement of financial position that includes hedged item",
        "terseLabel": "Balance sheet line item"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the line item in the statement of financial position that includes the hedged item. [Refer: Hedged items [domain]]"
       }
      }
     },
     "auth_ref": [
      "r311",
      "r554"
     ]
    },
    "ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of nature of entity's operations and principal activities",
        "terseLabel": "Description of nature operations and principal activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the nature of the entity's operations and principal activities."
       }
      }
     },
     "auth_ref": [
      "r437",
      "r597",
      "r620"
     ]
    },
    "aeg_DescriptionOfPeriodsWhenCashFlowsExpectedToAffectProfitOrLoss": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfPeriodsWhenCashFlowsExpectedToAffectProfitOrLoss",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Periods When Cash Flows Expected To Affect Profit Or Loss",
        "terseLabel": "Description of periods when cash flows expected to affect profit or loss",
        "documentation": "Description of periods when cash flows expected to affect profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DescriptionOfPeriodsWhenCashFlowsExpectedToBeOccur": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DescriptionOfPeriodsWhenCashFlowsExpectedToBeOccur",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description Of Periods When Cash Flows Expected To Be Occur",
        "terseLabel": "Description of periods when cash flows expected to be occur",
        "documentation": "Description of periods when cash flows expected to be occur."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DescriptionOfValuationTechniquesUsedInFairValueMeasurementAssets": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DescriptionOfValuationTechniquesUsedInFairValueMeasurementAssets",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Description of valuation techniques used in fair value measurement, assets",
        "verboseLabel": "Valuation technique in assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The description of the valuation techniques (for example, the market approach, cost approach and income approach) used for the fair value measurement of assets. [Refer: Valuation techniques used in fair value measurement [domain]; Cost approach [member]; Income approach [member]; Market approach [member]]"
       }
      }
     },
     "auth_ref": [
      "r178",
      "r583"
     ]
    },
    "aeg_DetailedInformationAboutCashAndCashEquivalentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DetailedInformationAboutCashAndCashEquivalentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Detailed information about cash and cash equivalents [line items]",
        "terseLabel": "Detailed information about cash and cash equivalents [line items]",
        "documentation": "Detailed information about cash and cash equivalents."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DetailedInformationAboutCashAndCashEquivalentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DetailedInformationAboutCashAndCashEquivalentsTable",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Detailed information about cash and cash equivalents [table]",
        "terseLabel": "Detailed information about cash and cash equivalents [table]",
        "documentation": "Detailed information about cash and cash equivalents [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DetailsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DetailsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Details [Axis]",
        "terseLabel": "Details [Axis]",
        "documentation": "Details [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DetailsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DetailsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Details [Domain]",
        "terseLabel": "Details [Domain]",
        "documentation": "Details [Domain]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DetailsOfChangesInAssumptionsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DetailsOfChangesInAssumptionsAxis",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Details Of Changes In Assumptions [Axis]",
        "documentation": "Details Of Changes In Assumptions [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DetailsOfChangesInAssumptionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DetailsOfChangesInAssumptionsMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Details Of Changes In Assumptions [Member]",
        "documentation": "Details Of Changes In Assumptions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DifferenceBetweenCarryingAmountOfFinancialLiabilityAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DifferenceBetweenCarryingAmountOfFinancialLiabilityAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligation",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Difference between carrying amount of financial liability and amount contractually required to pay at maturity to holder of obligation",
        "terseLabel": "Difference between the contractually required payment at maturity date and the carrying amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount by which the carrying amount of a financial liability is more (less) than the amount that the entity would be contractually required to pay at maturity to the holder of the obligation. [Refer: Carrying amount [member]]"
       }
      }
     },
     "auth_ref": [
      "r288",
      "r289",
      "r540",
      "r541"
     ]
    },
    "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Difference Due To Effects Of Income Tax For Period Income Or Charge With Applicable Tax Rates",
        "negatedTotalLabel": "Total differences",
        "documentation": "Difference due to effects of income tax for period income or charge with applicable tax rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRatesAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Difference due to effects of income tax for period income or charge with applicable tax rates [abstract]",
        "terseLabel": "Differences due to the effects of:",
        "documentation": "Difference due to effects of income tax for period (income) / charge with applicable tax rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DilutedEarningsPerCommonShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DilutedEarningsPerCommonShare",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted Earnings Per Common Share",
        "terseLabel": "Diluted earnings per common share",
        "documentation": "Diluted earnings per common share."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DilutedEarningsPerCommonShareB": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DilutedEarningsPerCommonShareB",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted Earnings Per Common Share B",
        "terseLabel": "Diluted earnings per common share B",
        "documentation": "Diluted earnings per common share B."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DilutedEarningsPerCommonShareBFromContinuingOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DilutedEarningsPerCommonShareBFromContinuingOperations",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted Earnings Per Common Share B From Continuing Operations",
        "terseLabel": "Diluted earnings per common share B from continuing operations",
        "documentation": "Diluted earnings per common share B from continuing operations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DilutedEarningsPerCommonShareFromContinuingOperations": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DilutedEarningsPerCommonShareFromContinuingOperations",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Diluted Earnings Per Common Share From Continuing Operations",
        "terseLabel": "Diluted earnings per common share\u00a0from continuing operations",
        "documentation": "Diluted earnings per common share from continuing operations."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisaggregationOfInsuranceContractsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisaggregationOfInsuranceContractsAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disaggregation of insurance contracts [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r239",
      "r241",
      "r255",
      "r257",
      "r268"
     ]
    },
    "ifrs-full_DisaggregationOfInsuranceContractsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisaggregationOfInsuranceContractsDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disaggregation of insurance contracts [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all insurance contracts when disaggregated into insurance contracts issued and reinsurance contracts held. It also represents the standard value for the 'Disaggregation of insurance contracts' axis if no other member is used. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r239",
      "r241",
      "r255",
      "r257",
      "r268"
     ]
    },
    "aeg_DisclosureDetailOfInvestmentsInAssociatesSubsidariesAndJointVenture": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureDetailOfInvestmentsInAssociatesSubsidariesAndJointVenture",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Detail Of Investments In Associates Subsidaries And Joint Venture",
        "terseLabel": "Summary of Investments In Associates Subsidaries And Joint Venture",
        "documentation": "Disclosure detail of investments in associates subsidaries and joint venture."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInEntiretyOfInsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTextBlock",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeatures"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Entirety Of Insurance Reinsurance Contracts And Investment Contracts With Discretionary Participation Features [Text Block]",
        "terseLabel": "(Re)Insurance contracts and investment contracts with discretionary participation features",
        "documentation": "Disclosure in entirety of insurance, reinsurance contracts and investment contracts with discretionary participation features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInEntiretyOfInsuranceReinsuranceIncludingContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInEntiretyOfInsuranceReinsuranceIncludingContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Entirety Of Insurance Reinsurance Including Contracts Held And Investment Contracts With Discretionary Participating Features [Line Items]",
        "documentation": "Disclosure in entirety of insurance reinsurance including contracts held and investment contracts with discretionary participating features [Line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInEntiretyOfInsuranceReinsuranceIncludingContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInEntiretyOfInsuranceReinsuranceIncludingContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Entirety Of Insurance Reinsurance Including Contracts Held And Investment Contracts With Discretionary Participating Features [Table]",
        "documentation": "Disclosure in entirety of insurance reinsurance including contracts held and investment contracts with discretionary participating features [Table]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Capital Ratios Of Operating Units [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsLineItems",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Capital Ratios Of Operating Units [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTable",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Capital Ratios Of Operating Units [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfCapitalRatiosOfOperatingUnitsTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Capital Ratios Of Operating Units [Table Text Block]",
        "verboseLabel": "Summary of Capital Ratios of Aegon's Operating Units",
        "documentation": "Disclosure in tabular form of capital ratios of operating units [table text block]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfClosingLevelOfMajorIndicesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfClosingLevelOfMajorIndicesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Closing Level Of Major Indices Explanatory",
        "terseLabel": "Summary of Closing Levels of Certain Major Indices",
        "documentation": "Disclosure in tabular form of closing level of major indices."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Insurance Contracts And Reinsurance Contracts Assets And Liabilities Based On The Approach Explanatory",
        "terseLabel": "Summary of Assets and Liabilities for Groups of Insurance Contracts Issued and Reinsurance Contracts Held by Measurement Model",
        "documentation": "Disclosure in tabular form of insurance contracts and reinsurance contracts assets and liabilities based on the approach."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Insurance Contracts And Reinsurance Contracts Assets And Liabilities Based On The Approach [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInsuranceContractsAndReinsuranceContractsAssetsAndLiabilitiesBasedOnTheApproachTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Insurance Contracts And Reinsurance Contracts Assets And Liabilities Based On The Approach [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInterestRateExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInterestRateExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Interest Rate Explanatory",
        "terseLabel": "Schedule of Interest Rate",
        "documentation": "Disclosure in tabular form of interest rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Investment Contracts With Discretionary Participating Features Explanatory",
        "terseLabel": "Summary of Investment Contracts with Discretionary Participating Features",
        "documentation": "Disclosure in tabular form of investment contracts with discretionary participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Investment Contracts With Discretionary Participating Features [Line Items]",
        "documentation": "Disclosure in tabular form of investment contracts with discretionary participating features line item."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfInvestmentContractsWithDiscretionaryParticipatingFeaturesTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Investment Contracts With Discretionary Participating Features [Table]",
        "documentation": "Disclosure in tabular form of investment contracts with discretionary participating features table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfMovementInContractualServiceMargin": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfMovementInContractualServiceMargin",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Movement In Contractual Service Margin",
        "terseLabel": "Summary of Contractual Service Margin by Transition Method",
        "documentation": "Disclosure in tabular form of movement in contractual service margin table text block."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfMovementInContractualServiceMarginLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfMovementInContractualServiceMarginLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Movement In Contractual Service Margin [Line Items]",
        "documentation": "Disclosure in tabular form of movement in contractual service margin [Line item]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfMovementInContractualServiceMarginTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfMovementInContractualServiceMarginTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Movement In Contractual Service Margin [Table]",
        "documentation": "Disclosure in tabular form of movement in contractual service margin table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriod": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriod",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of New Contracts Recognized Insurance During The Period",
        "terseLabel": "Summary of New Contracts Recognized",
        "documentation": "Disclosure in tabular form of new contracts recognized insurance during the period table text block."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriodLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriodLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of New Contracts Recognized Insurance During The Period [Line Items]",
        "documentation": "Disclosure in tabular form of new contracts recognized insurance during the period [Line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriodTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfNewContractsRecognizedInsuranceDuringThePeriodTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of New Contracts Recognized Insurance During The Period [Table]",
        "documentation": "Disclosure in tabular form of new contracts recognized insurance during the period [Table]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureInTabularFormOfSensitivityAnalysisAsAResultOfParallelShiftInYieldCurvesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureInTabularFormOfSensitivityAnalysisAsAResultOfParallelShiftInYieldCurvesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure In Tabular Form Of Sensitivity Analysis As A Result Of Parallel Shift In Yield Curves Explanatory",
        "terseLabel": "Schedule of Parallel Movement of Yield Curve",
        "documentation": "Disclosure In tabular form of sensitivity analysis as a result of parallel shift In yield curves."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfAccountantsRemunerationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfAccountantsRemunerationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Accountants Remuneration [text block]",
        "terseLabel": "Summary of Accountants Remuneration",
        "documentation": "The disclosure of accountants remuneration."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Accruals"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of accrued expenses and other liabilities [text block]",
        "terseLabel": "Accruals"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of accrued expenses and other liabilities. [Refer: Accruals; Other liabilities]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfAccruedIncomeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfAccruedIncomeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Accrued Income [table text block]",
        "terseLabel": "Summary of Accrued Income",
        "documentation": "The disclosure of accrued income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfAccruedLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfAccruedLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/AccrualsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Accrued Liabilities [text block]",
        "terseLabel": "Summary of Accruals",
        "documentation": "The disclosure of accrued liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [text block]",
        "terseLabel": "Summary of insurance net investment result"
       }
      }
     },
     "auth_ref": [
      "r245"
     ]
    },
    "ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the adjustments made when an entity changed the basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features."
       }
      }
     },
     "auth_ref": [
      "r245"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfInsuranceRevenueAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of insurance revenue [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfInsuranceRevenueExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenue"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of insurance revenue [text block]",
        "terseLabel": "Insurance revenue"
       }
      }
     },
     "auth_ref": [
      "r234"
     ]
    },
    "ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfInsuranceRevenueLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of insurance revenue [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAnalysisOfInsuranceRevenueTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of analysis of insurance revenue [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the analysis of insurance revenue."
       }
      }
     },
     "auth_ref": [
      "r234"
     ]
    },
    "aeg_DisclosureOfAssetsPledgedExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfAssetsPledgedExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Assets Pledged Explanatory",
        "terseLabel": "Summary of Carrying Amount of Collateral Pledged and the Corresponding Amounts",
        "documentation": "The disclosure of assets pledged."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfAuditorsRemunerationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfAuditorsRemunerationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemuneration"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of auditors' remuneration [text block]",
        "terseLabel": "Auditor's remuneration"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of compensation to the entity's auditors."
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfBasisOfConsolidationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBasisOfConsolidationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of basis of consolidation [text block]",
        "terseLabel": "Basis of consolidation"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the basis used for consolidation."
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of basis of preparation of financial statements [text block]",
        "terseLabel": "Basis of presentation"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfBorrowingsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBorrowingsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Borrowings"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of borrowings [text block]",
        "terseLabel": "Borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfBusinessCombinationsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBusinessCombinationsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about business combination [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfBusinessCombinationsAndDisposalGroupsExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfBusinessCombinationsAndDisposalGroupsExplanatoryTextBlock",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivested"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Business Combinations And Disposal Groups Explanatory [Text Block]",
        "terseLabel": "Companies and businesses acquired and divested",
        "documentation": "Disclosure of business combinations and disposal groups explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfBusinessCombinationsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBusinessCombinationsLineItems",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about business combination [line items]",
        "terseLabel": "Disclosure of detailed information about business combination [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfBusinessCombinationsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfBusinessCombinationsTable",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about business combination [table]",
        "terseLabel": "Disclosure of detailed information about business combination [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of business combinations."
       }
      }
     },
     "auth_ref": [
      "r278",
      "r527"
     ]
    },
    "aeg_DisclosureOfCapitalManagementAndSolvencyAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCapitalManagementAndSolvencyAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Capital Management And Solvency [abstract]",
        "documentation": "Disclosure of capital management and solvency."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCapitalManagementAndSolvencyLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCapitalManagementAndSolvencyLineItems",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Capital Management And Solvency [line items]",
        "terseLabel": "Disclosure of capital management and solvency [line items]",
        "documentation": "Disclosure of capital management and solvency."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCapitalManagementAndSolvencyTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCapitalManagementAndSolvencyTable",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Capital Management And Solvency [table]",
        "terseLabel": "Disclosure Of Capital Management And Solvency [table]",
        "documentation": "Disclosure Of Capital Management And Solvency [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCashAndCashEquivalentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalents"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of cash and cash equivalents [text block]",
        "terseLabel": "Cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of cash and cash equivalents. [Refer: Cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfChangesInAccountingEstimatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfChangesInAccountingEstimatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in accounting estimates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfChangesInAccountingEstimatesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfChangesInAccountingEstimatesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in accounting estimates [text block]",
        "terseLabel": "Summary of Segment Results"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of changes in accounting estimates."
       }
      }
     },
     "auth_ref": [
      "r131",
      "r453"
     ]
    },
    "ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CriticalAccountingEstimatesAndJudgmentInApplyingAccountingPolicies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in accounting policies, accounting estimates and errors [text block]",
        "terseLabel": "Critical accounting estimates and judgment in applying accounting policies"
       }
      }
     },
     "auth_ref": [
      "r133"
     ]
    },
    "aeg_DisclosureOfChangesInFairValueMeasurementAssetsAndLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInFairValueMeasurementAssetsAndLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in fair value measurement assets and liabilities [TextBlock]",
        "terseLabel": "Disclosures of Changes in Level 3 Assets",
        "documentation": "The disclosure of changes in fair value measurement assets and liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInRevaluationReserveAvailableForSaleAndOtherExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInRevaluationReserveAvailableForSaleAndOtherExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in revaluation reserve available for sale and other [text block]",
        "terseLabel": "Summary of Revaluation Reserves",
        "documentation": "Disclosure of changes in revaluation reserve available for sale and other [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInRevaluationReserveForInvestmentsMeasuredAtFairValueThroughOtherComprehensiveIncomeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInRevaluationReserveForInvestmentsMeasuredAtFairValueThroughOtherComprehensiveIncomeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Changes In Revaluation Reserve For Investments Measured At Fair Value Through Other Comprehensive Income Explanatory",
        "verboseLabel": "Summary of Revaluation Reserve for Investments Measured at FVOCI",
        "documentation": "Disclosure of changes in revaluation reserve for investments measured at fair value through other comprehensive income explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInShareCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInShareCapitalAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Changes In Share Capital [abstract]",
        "documentation": "Disclosure Of Changes In Share Capital [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInShareCapitalLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInShareCapitalLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareCapital"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Changes In Share Capital [line items]",
        "documentation": "Disclosure Of Changes In Share Capital [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInShareCapitalTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInShareCapitalTable",
     "presentation": [
      "http://www.aegon.com/role/ShareCapital"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Changes In Share Capital [table]",
        "documentation": "Disclosure Of Changes In Share Capital [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInTheFairValueOfFinancialAssetsDesignatedAtFairValueThroughProfitOrLossLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInTheFairValueOfFinancialAssetsDesignatedAtFairValueThroughProfitOrLossLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Changes in the Fair Value of Financial Assets Designated at Fair Value Through Profit or Loss [Line Items]",
        "verboseLabel": "Disclosure of changes in the fair value of financial assets designated at fair value through profit or loss [line items]",
        "documentation": "Disclosure of changes in the fair value of financial assets that have not been hedged with derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInTheFairValueOfFinancialAssetsThatHaveNotBeenHedgedWithDerivativesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInTheFairValueOfFinancialAssetsThatHaveNotBeenHedgedWithDerivativesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Changes in the Fair Value of Financial Assets that have not been Hedged with Derivatives [Abstract]",
        "documentation": "Disclosure of changes in the fair value of financial assets that have not been hedged with derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInTheFairValueOfFinancialAssetsThatHaveNotBeenHedgedWithDerivativesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInTheFairValueOfFinancialAssetsThatHaveNotBeenHedgedWithDerivativesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in the fair value of financial assets that have not been hedged with derivatives explanatory",
        "terseLabel": "Summary of Changes in Fair Value have been Recognized for these Investments",
        "documentation": "Disclosure of changes in the fair value of financial assets that have not been hedged with derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInTheFairValueOfFinancialAssetsThatHaveNotBeenHedgedWithDerivativesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInTheFairValueOfFinancialAssetsThatHaveNotBeenHedgedWithDerivativesTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Changes in the Fair Value of Financial Assets that have not been Hedged with Derivatives [Table]",
        "terseLabel": "Disclosure of changes in the fair value of financial assets that have not been hedged with derivatives [table]",
        "documentation": "Disclosure of changes in the fair value of financial assets that have not been hedged with derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfChangesInUnrealizedFairValueOfAvailableforsaleInvestmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfChangesInUnrealizedFairValueOfAvailableforsaleInvestmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of changes in unrealized fair value of available-for-sale investments [abstract]",
        "documentation": "Disclosure of information about changes in the unrealized fair value of available-for-sale investments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [line items]",
        "terseLabel": "Disclosure of classes of share capital [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfClassesOfShareCapitalTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfClassesOfShareCapitalTable",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of classes of share capital [table]",
        "terseLabel": "Disclosure of classes of share capital [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to classes of share capital."
       }
      }
     },
     "auth_ref": [
      "r441",
      "r591",
      "r652"
     ]
    },
    "aeg_DisclosureOfCommissionsAndExpensesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommissionsAndExpensesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Commissions And Expenses [abstract]",
        "documentation": "Disclosure of commissions and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommissionsAndExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommissionsAndExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpenses"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Commissions And Expenses [text block]",
        "terseLabel": "Commissions and expenses",
        "documentation": "Disclosure Of Commissions And Expenses [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommissionsAndExpensesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommissionsAndExpensesLineItems",
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/CommissionsAndExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Commissions And Expenses [line items]",
        "terseLabel": "Disclosure of commissions and expenses [line items]",
        "documentation": "Disclosure of commissions and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommissionsAndExpensesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommissionsAndExpensesTable",
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/CommissionsAndExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Commissions And Expenses [table]",
        "terseLabel": "Disclosure Of Commissions And Expenses [table]",
        "documentation": "Disclosure of commissions and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommitmentsAndContingenciesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommitmentsAndContingenciesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of commitments and contingencies [abstract]",
        "documentation": "Disclosure of commitments and contingencies"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommitmentsAndContingenciesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommitmentsAndContingenciesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingencies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of commitments and contingencies [text block]",
        "terseLabel": "Commitments and contingencies",
        "documentation": "The entire disclosure for commitment and contingencies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommitmentsAndContingenciesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommitmentsAndContingenciesLineItems",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingencies",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of commitments and contingencies [line items]",
        "terseLabel": "Disclosure of commitments and contingencies [line items]",
        "documentation": "Disclosure of commitments and contingencies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCommitmentsAndContingenciesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCommitmentsAndContingenciesTable",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingencies",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Commitments And Contingencies [table]",
        "terseLabel": "Disclosure Of Commitments And Contingencies [table]",
        "documentation": "Disclosure of commitments and contingencies."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of commitments and contingent liabilities [text block]",
        "terseLabel": "Summary of Other Commitments and Contingencies"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of commitments and contingent liabilities. [Refer: Classes of contingent liabilities [domain]]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfCompensationOfKeyManagementPersonnelAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCompensationOfKeyManagementPersonnelAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Compensation Of Key Management Personnel [abstract]",
        "documentation": "Disclosure Of Compensation Of Key Management Personnel abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfComponentsOfIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfComponentsOfIncomeTaxExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Components Of Income Tax Explanatory",
        "terseLabel": "Components of Income Tax for Period (Income) / Charge",
        "documentation": "Disclosure of components of income tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCompositionOfAvailableOwnFundsAcrossTiersExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCompositionOfAvailableOwnFundsAcrossTiersExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Composition of Available Own Funds Across Tiers [text block]",
        "terseLabel": "Summary of Composition of Available Own Funds Across Tiers",
        "documentation": "Disclosure of composition of available own funds across tiers."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCompositionOfCapitalizationAndCalculationOfGrossFinancialLeverageRatioExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCompositionOfCapitalizationAndCalculationOfGrossFinancialLeverageRatioExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Composition of Capitalization and Calculation of Gross Financial Leverage Ratio [text block]",
        "terseLabel": "Summary of Composition of Total Capitalization and Calculation of Gross Financial Leverage Ratio",
        "documentation": "Disclosure of composition of capitalization and calculation of gross financial leverage ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCouponDetailsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCouponDetailsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Coupon Details [Text block]",
        "terseLabel": "Summary of Coupon Details",
        "documentation": "The disclosure of coupon details."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCreditExposuresExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCreditExposuresExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit exposures [table text block]",
        "terseLabel": "Summary of Group Limits Per Credit Rating",
        "documentation": "The disclosure of credit exposures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfCreditQualityOfGrossPositionsReinsuranceAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfCreditQualityOfGrossPositionsReinsuranceAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Credit Quality Of Gross Positions Reinsurance Assets [table text block]",
        "terseLabel": "Summary of Credit Quality of Gross Positions of Reinsurance Assets",
        "documentation": "The disclosure of credit quality of gross positions reinsurance assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCreditRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk [text block]",
        "terseLabel": "Schedule of Credit Risk Concentration"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of credit risk. [Refer: Credit risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r355",
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfCreditRiskExposureAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCreditRiskExposureExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [text block]",
        "terseLabel": "Summary of Credit Risk Exposure"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the credit risk exposure. Credit risk exposure is the credit risk inherent in an entity\u2019s financial assets and commitments to extend credit."
       }
      }
     },
     "auth_ref": [
      "r337",
      "r572"
     ]
    },
    "ifrs-full_DisclosureOfCreditRiskExposureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [line items]",
        "terseLabel": "Disclosure of credit risk exposure [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfCreditRiskExposureTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfCreditRiskExposureTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of credit risk exposure [table]",
        "terseLabel": "Disclosure of credit risk exposure [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the credit risk exposure."
       }
      }
     },
     "auth_ref": [
      "r337",
      "r572"
     ]
    },
    "aeg_DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [abstract]",
        "documentation": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [line items]",
        "terseLabel": "Disclosure of deferred acquisition costs arising from insurance contracts [Line Items]",
        "documentation": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsTable",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [table]",
        "terseLabel": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [table]",
        "documentation": "Disclosure Of Deferred Acquisition Costs Arising From Insurance Contracts [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredCostsArisingFromInsuranceContractsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredCostsArisingFromInsuranceContractsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Costs Arising From Insurance Contracts [text block]",
        "terseLabel": "Summary of Deferred Costs Arising From Insurance Contracts",
        "documentation": "The disclosure of deferred costs arising from insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpenses"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Expenses [text block]",
        "terseLabel": "Deferred expenses",
        "documentation": "The disclosure of deferred expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredIncomeTaxAssetNotRecognizedExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredIncomeTaxAssetNotRecognizedExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Income Tax Asset Not Recognized [text block]",
        "terseLabel": "Schedule of Loss Carryforward period and Deferred Corporate Income Tax Assets Not Recognized",
        "documentation": "Disclosure Of Deferred Income Tax Asset Not Recognized [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredTaxAssetsAndLiabilityRecognizedAndMovementsDuringPeriodExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Deferred Tax Assets And Liability Recognized And Movements During Period [table text block]",
        "terseLabel": "Schedule of Net Deferred Tax Assets and Liabilities has been Recognized",
        "documentation": "Disclosure of deferred tax assets and liability recognized and movements during period explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDeferredTaxLiabilityAssetExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDeferredTaxLiabilityAssetExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of deferred tax liability asset [text block]",
        "terseLabel": "Summary of Deferred Tax",
        "documentation": "The disclosure of deferred tax liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDeferredTaxesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDeferredTaxesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredTax"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of deferred taxes [text block]",
        "terseLabel": "Deferred tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of deferred taxes. [Refer: Deferred tax liabilities; Deferred tax assets]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDefinedBenefitPlansEmployeeBenefitExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDefinedBenefitPlansEmployeeBenefitExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Defined Benefit Plans Employee Benefit Expenses Explanatory",
        "terseLabel": "Summary of Fair Value of Plan Assets",
        "documentation": "The disclosure of defined benefit plans employee benefit expenses explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [text block]",
        "terseLabel": "Summary of Defined Benefit Plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of defined benefit plans. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r17",
      "r468"
     ]
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansLineItems",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlans",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [line items]",
        "terseLabel": "Disclosure of defined benefit plans [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDefinedBenefitPlansRecognizedInConsolidatedStatementsOfFinancialPositionExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDefinedBenefitPlansRecognizedInConsolidatedStatementsOfFinancialPositionExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans recognized in Consolidated Statements of Financial Position [text block]",
        "terseLabel": "Summary of Amounts Recognized in Statement of Financial Positions",
        "documentation": "Disclosure of defined benefit plans recognized in consolidated statements of financial position."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDefinedBenefitPlansTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDefinedBenefitPlansTable",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlans",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of defined benefit plans [table]",
        "terseLabel": "Disclosure of defined benefit plans [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to defined benefit plans."
       }
      }
     },
     "auth_ref": [
      "r17",
      "r468"
     ]
    },
    "aeg_DisclosureOfDerivativeFinancialAssetAndLiabilitiesOffsettingArrangementsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDerivativeFinancialAssetAndLiabilitiesOffsettingArrangementsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Derivative Financial Asset And Liabilities Offsetting Arrangements [abstract]",
        "documentation": "Disclosure of derivative financial asset and liabilities offsetting arrangements."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDerivativeFinancialInstrumentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDerivativeFinancialInstrumentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Derivative Financial Instruments [abstract]",
        "documentation": "Disclosure of derivative financial instruments abstract."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDerivativeFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Derivatives"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of derivative financial instruments [text block]",
        "terseLabel": "Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of derivative financial instruments. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfDerivativeFinancialInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDerivativeFinancialInstrumentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Derivative Financial Instruments [line items]",
        "terseLabel": "Disclosure of derivative financial instruments [Line Items]",
        "documentation": "Disclosure of derivative financial instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDerivativeFinancialInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDerivativeFinancialInstrumentsTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Derivative Financial Instruments [table]",
        "terseLabel": "Disclosure Of Derivative Financial Instruments [table]",
        "documentation": "Disclosure Of Derivative Financial Instruments [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDerivativesNotDesignatedInHedgeGeneralAccountExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDerivativesNotDesignatedInHedgeGeneralAccountExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Derivatives Not Designated In Hedge General Account [text block]",
        "terseLabel": "Derivatives Not Designated In Hedge",
        "documentation": "Disclosure of derivatives not designated in hedge general account."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailInformationAboutProposalProfitAppropriationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailInformationAboutProposalProfitAppropriationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detail Information About Proposal Profit Appropriation [text block]",
        "terseLabel": "Summary of Proposal for Profit Appropriation",
        "documentation": "The disclosure of detail information about proposal profit appropriation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutAnalysisOfInsuranceRevenueExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutAnalysisOfInsuranceRevenueExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Analysis Of Insurance Revenue Explanatory",
        "terseLabel": "Summary of Amounts Related to Changes in Liability for Remaining Coverage",
        "documentation": "Disclosure of detailed information about analysis of insurance revenue explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowings [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowings [text block]",
        "terseLabel": "Summary of Borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsLineItems",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowings [line items]",
        "terseLabel": "Disclosure of detailed information about borrowings [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutBorrowingsTable",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about borrowings [table]",
        "terseLabel": "Disclosure of detailed information about borrowings [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of borrowings."
       }
      }
     },
     "auth_ref": [
      "r938"
     ]
    },
    "aeg_DisclosureOfDetailedInformationAboutCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Carrying Amounts And Fair Values Of Financial Assets And Financial Liabilities Explanatory",
        "terseLabel": "Carrying Values and Estimated Fair Values of Assets and Liabilities",
        "documentation": "Disclosure of Detailed Information about Carrying Amounts and Fair Values of Financial Assets and Financial Liabilities [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about cash and cash equivalents [text block]",
        "terseLabel": "Summary of Detailed Information about Cash and Cash Equivalents",
        "documentation": "The disclosure for detailed information about cash and cash equivalent."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutCommissionsAndExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCommissionsAndExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about commissions and expenses [text block]",
        "terseLabel": "Summary of Commissions and Expenses",
        "documentation": "The disclosure of detailed information about commissions and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutCreditRatingLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCreditRatingLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Credit Rating [line items]",
        "terseLabel": "Disclosure of detailed information about credit rating [line items]",
        "documentation": "Line items presenting disclosure of detailed information about credit rating."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutCreditRatingTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutCreditRatingTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Credit Rating [table]",
        "terseLabel": "Disclosure Of Detailed Information About Credit Rating [table]",
        "documentation": "Tabular disclosure of detailed information about credit rating."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutDeferredCorporateIncomeTaxAssetsTemporaryDifferencesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutDeferredCorporateIncomeTaxAssetsTemporaryDifferencesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Deferred Corporate Income Tax Assets Temporary Differences Explanatory",
        "terseLabel": "Summary of Deferred Corporate Income Tax Asset",
        "documentation": "Disclosure of detailed information about deferred corporate income tax assets temporary differences explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutFinanceIncomeExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutFinanceIncomeExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Finance Income Expense [text block]",
        "terseLabel": "Summary of financial transactions results",
        "documentation": "The disclosure of detailed information about finance income (expense)."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutFinancingNetInvestmentResult",
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about Financing net investment result",
        "terseLabel": "Summary of Financing Net Investment Result",
        "documentation": "Disclosure of detailed information about Financing net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgedItemsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgedItemsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedged items [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgedItemsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgedItemsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedged items [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgedItemsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgedItemsTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedged items [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of hedged items."
       }
      }
     },
     "auth_ref": [
      "r316",
      "r557"
     ]
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedging instruments [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedging instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutHedgingInstrumentsTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about hedging instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of hedging instruments."
       }
      }
     },
     "auth_ref": [
      "r308",
      "r551"
     ]
    },
    "aeg_DisclosureOfDetailedInformationAboutHistoricalNetIncomeAndStockholdersEquityExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutHistoricalNetIncomeAndStockholdersEquityExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about historical net income and stockholders equity explanatory",
        "terseLabel": "Summary of Information on Historical Net Result and Shareholders' Equity",
        "documentation": "Disclosure of detailed information about historical net income and stockholders equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutIlliquidityPremiumPerPortfolioAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutIlliquidityPremiumPerPortfolioAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Illiquidity Premium Per Portfolio [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutIlliquidityPremiumPerPortfolioLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutIlliquidityPremiumPerPortfolioLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Illiquidity Premium Per Portfolio [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutIlliquidityPremiumPerPortfolioTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutIlliquidityPremiumPerPortfolioTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Illiquidity Premium Per Portfolio [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInRemunerationExpensesWithTimeSpendOnBoardexplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInRemunerationExpensesWithTimeSpendOnBoardexplanatoryTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About In Remuneration Expenses With Time Spend On BoardExplanatory [Table Text Block]",
        "terseLabel": "Summary of Remuneration Expenses",
        "documentation": "Disclosure Of Detailed Information About In Remuneration Expenses With Time Spend On BoardExplanatory"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Insurance Reinsurance And Investment Contracts Assets and Liabilities Per Segment [Abstract]",
        "documentation": "Disclosure of detailed information about insurance reinsurance and investment contracts assets and liabilities per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Insurance Reinsurance And Investment Contracts Assets and Liabilities Per Segment Explanatory",
        "terseLabel": "Summary of Detailed Information About Insurance, Reinsurance and Investment Contracts",
        "documentation": "Disclosure of detailed information about insurance reinsurance and investment contracts assets and liabilities per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Insurance Reinsurance And Investment Contracts Assets and Liabilities Per Segment [Line Items]",
        "documentation": "Disclosure of detailed information about insurance reinsurance and investment contracts assets and liabilities per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsAssetsAndLiabilitiesPerSegmentTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Insurance Reinsurance And Investment Contracts Assets and Liabilities Per Segment [Table]",
        "documentation": "Disclosure of detailed information about insurance reinsurance and investment contracts assets and liabilities per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceServiceExpensesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceServiceExpensesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Insurance Service Expenses [Abstract]",
        "documentation": "Disclosure of detailed information about insurance service expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceServiceExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceServiceExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpenseTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Insurance Service Expenses Explanatory",
        "terseLabel": "Summary of Insurance Service Expenses",
        "documentation": "Disclosure of detailed information about insurance service expenses explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceServiceExpensesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceServiceExpensesLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Insurance Service Expenses [Line Items]",
        "documentation": "Disclosure of detailed information about insurance service expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInsuranceServiceExpensesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInsuranceServiceExpensesTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Insurance Service Expenses [Table]",
        "documentation": "Disclosure of detailed information about insurance service expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInterestsInOtherEntitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInterestsInOtherEntitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Interests In Other Entities Explanatory",
        "terseLabel": "Summary of Shares in Group Companies",
        "documentation": "Disclosure Of Detailed Information About Interests In Other Entities Explanatory"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about investment property [text block]",
        "terseLabel": "Summary of Investments in Real Estate"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r98"
     ]
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyExplanatoryTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively Explanatory [Table Text Block]",
        "terseLabel": "Summary of Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively",
        "documentation": "Disclosure of detailed information about investments and other assets allocated to contracts that were not transitioned fully retrospectively explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Investments and Other Assets Allocated to Contracts that were not Transitioned Fully Retrospectively [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsInRealEstateHeldByEntitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsInRealEstateHeldByEntitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Investments In Real Estate Held By Entities [Abstract]",
        "documentation": "Disclosure Of Detailed Information About Investments In Real Estate Held By Entities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsInRealEstateHeldByEntitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsInRealEstateHeldByEntitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Investments In Real Estate Held By Entities [Line Items]",
        "documentation": "Disclosure Of Detailed Information About Investments In Real Estate Held By Entities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutInvestmentsInRealEstateHeldByEntitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutInvestmentsInRealEstateHeldByEntitiesTable",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Investments In Real Estate Held By Entities [Table]",
        "documentation": "Disclosure Of Detailed Information About Investments In Real Estate Held By Entities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutLoansToSubsidiariesJointVenturesAndAssociatesExpplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutLoansToSubsidiariesJointVenturesAndAssociatesExpplanatory",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed information about Loans to Subsidiaries, Joint Ventures and Associates [text block]",
        "terseLabel": "Summary of Loans to Group Companies",
        "documentation": "Disclosure of Detailed information about Loans to Subsidiaries, Joint Ventures and Associates [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutLongTermBorrowingsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutLongTermBorrowingsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/LongTermBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about long-term borrowings [text block]",
        "terseLabel": "Summary of Long-term Borrowings",
        "documentation": "The disclosure of detailed information about long-term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Net Expenses on Reinsurance Held [Abstract]",
        "documentation": "Disclosure of detailed information about net expenses on reinsurance held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldExplanatory",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Net Expenses on Reinsurance Held Explanatory",
        "terseLabel": "Summary of net income / (expenses) on reinsurance held",
        "documentation": "Disclosure of detailed information about net expenses on reinsurance held explanatory"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldLineItems",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Net Expenses on Reinsurance Held [Line Items]",
        "documentation": "Disclosure of detailed information about net expenses on reinsurance held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutNetExpensesOnReinsuranceHeldTable",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information About Net Expenses on Reinsurance Held [Table]",
        "documentation": "Disclosure of detailed information about net expenses on reinsurance held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Other Liabilities [text block]",
        "terseLabel": "Summary of Other Liabilities",
        "documentation": "Disclosure of detailed information about other liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutOtherOperatingIncomeAndOtherChargesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutOtherOperatingIncomeAndOtherChargesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Other Operating Income And Other Charges Explanatory",
        "terseLabel": "Summary of Other Income / (Charges)",
        "documentation": "Disclosure of detailed information about other operating income and other charges explanatory table text block."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about property, plant and equipment [text block]",
        "terseLabel": "Summary of Real Estate Held for Own Use and Equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of detailed information about property, plant and equipment. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r15",
      "r467"
     ]
    },
    "aeg_DisclosureOfDetailedInformationAboutReceivablesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutReceivablesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Receivables [text block]",
        "terseLabel": "Summary of Receivables",
        "documentation": "The disclosure of detailed information about receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17Abstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17Abstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Recognition Of Revenue In Transition To IFRS 17 [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17ExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17ExplanatoryTextBlock",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Recognition Of Revenue In Transition To IFRS 17 Explanatory [Text Block]",
        "terseLabel": "Summary of Revenue Recognized on Insurance and Investments Contracts",
        "documentation": "Disclosure of detailed information about recognition of revenue in transition to IFRS 17 explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17LineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Recognition Of Revenue In Transition To IFRS 17 [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17Table": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutRecognitionOfRevenueInTransitionToIfrs17Table",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information About Recognition Of Revenue In Transition To IFRS 17 [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure OF Detailed Information About Results From Financial Transaction [Abstract]",
        "documentation": "Disclosure OF Detailed Information About Results From Financial Transaction."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionExplanatoryTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure OF Detailed Information About Results From Financial Transaction Explanatory [Table Text Block]",
        "terseLabel": "Summary Of Results From Financial Transactions",
        "documentation": "Disclosure OF Detailed Information About Results From Financial Transaction."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure OF Detailed Information About Results From Financial Transaction [Line Items]",
        "documentation": "Disclosure OF Detailed Information About Results From Financial Transaction."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutResultsFromFinancialTransactionTable",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure OF Detailed Information About Results From Financial Transaction [Table]",
        "documentation": "Disclosure OF Detailed Information About Results From Financial Transaction."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutSubordinatedLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Detailed Information about Subordinated Liabilities [text block]",
        "terseLabel": "Summary of Subordinated Borrowings",
        "documentation": "The disclosure of detailed information about subordinated liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationAboutTrustPassthroughSecuritiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationAboutTrustPassthroughSecuritiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about trust pass-through securities [text block]",
        "terseLabel": "Summary of Trust Pass-through Securities",
        "documentation": "Disclosure of detailed information on trust pass-through securities [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationOfOtherOperatingExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationOfOtherOperatingExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information Of Other Operating Expense Explanatory",
        "terseLabel": "Summary of Detailed Information of Other Operating Expense",
        "documentation": "Disclosure of detailed information of other operating expense explanatory table text block."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Information On Employee Benefits Expense [text block]",
        "terseLabel": "Summary of Employee Expenses",
        "documentation": "The disclosure of detailed information on employee benefits expense."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailedPurchaseAndSaleTransactionsOfInvestmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailedPurchaseAndSaleTransactionsOfInvestmentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Detailed Purchase And Sale Transactions Of Investments Explanatory [text block]",
        "terseLabel": "Summary of Commitments through Purchase and Sale Transactions of Investments",
        "documentation": "The disclosure of detailed purchase and sale transactions of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailsIncomeReceivedFromInterestsAndInvestmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailsIncomeReceivedFromInterestsAndInvestmentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Details Income Received From Interests And Investments [table text block]",
        "terseLabel": "Summary of Income Received From Investments in RMBSs, SMBSs and ABSs",
        "documentation": "The disclosure of details income received from interests and investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDetailsOfOtherAssetsAndReceivablesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Details Of Other Assets And Receivables [table text block]",
        "terseLabel": "Summary of Other Assets and Receivables",
        "documentation": "The disclosure of details of other assets and receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDividendPerCommonShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDividendPerCommonShareExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Dividend Per Common Share Explanatory",
        "terseLabel": "Summary of Dividend Per Common Share",
        "documentation": "Disclosure of dividend per common share explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDividendPerCommonShareLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDividendPerCommonShareLineItems",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of dividend per common share [line items]",
        "documentation": "Disclosure of dividend per common share."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDividendPerCommonShareTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDividendPerCommonShareTable",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Dividend Per Common Share [Table]",
        "documentation": "Disclosure of dividend per common share."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDividendsPerShareAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDividendsPerShareAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Dividends Per Share [abstract]",
        "documentation": "Disclosure of dividends per share abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfDividendsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfDividendsPerShareExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShare"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of dividends per share [text block]",
        "terseLabel": "Dividend per common share",
        "documentation": "The disclosure of dividends per share."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfEarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfEarningsPerShareExplanatory",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShare"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of earnings per share [text block]",
        "terseLabel": "Earnings per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for earnings per share."
       }
      }
     },
     "auth_ref": [
      "r68"
     ]
    },
    "ifrs-full_DisclosureOfEmployeeBenefitsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfEmployeeBenefitsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlans"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of employee benefits [text block]",
        "terseLabel": "Defined benefit plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for employee benefits."
       }
      }
     },
     "auth_ref": [
      "r33"
     ]
    },
    "ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfEntitysReportableSegmentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of entity's operating segments [text block]",
        "terseLabel": "Segment information"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for operating segments."
       }
      }
     },
     "auth_ref": [
      "r377"
     ]
    },
    "aeg_DisclosureOfEquitiesPricesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfEquitiesPricesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of equities prices [line items]",
        "terseLabel": "Disclosure of equities prices [line items]",
        "documentation": "Disclosure of equities prices."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfEstimatedCapitalPositionLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfEstimatedCapitalPositionLineItems",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Estimated Capital Position [Line Items]",
        "documentation": "Disclosure of estimated capital position [Line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfEstimatedCapitalPositionTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfEstimatedCapitalPositionTable",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Estimated Capital Position [Table]",
        "documentation": "Disclosure of estimated capital position [Table]."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfEventsAfterReportingPeriodExplanatory",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriod"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of events after reporting period [text block]",
        "terseLabel": "Events after the reporting period"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for events after the reporting period."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "aeg_DisclosureOfExpectedFutureCashFlowsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfExpectedFutureCashFlowsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of expected future cash flows [text block]",
        "terseLabel": "Summary of Cash Flows are Expected to Occur",
        "documentation": "Disclosure of expected future cash flows."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetExplanatoryTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Expected Guaranteed Premiums And Management Fees Net Defined Benefit Liability Asset Explanatory [Table Text Block]",
        "terseLabel": "Summary of Expected Guaranteed Premiums and Management Fees Net Defined Benefit Liability Asset",
        "documentation": "Disclosure of expected guaranteed premiums and management fees net defined benefit liability asset explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfExternalCreditExposuresAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfExternalCreditExposuresAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of external credit grades [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFairValueFinancialAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFairValueFinancialAssetsAndLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Fair Value Financial Assets And Liabilities [abstract]",
        "documentation": "Disclosure Of Fair Value Financial Assets And Liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFairValueFinancialAssetsAndLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFairValueFinancialAssetsAndLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Fair Value Financial Assets And Liabilities [line items]",
        "terseLabel": "Disclosure of fair value financial assets and liabilities [line items]",
        "documentation": "Disclosure of fair value financial assets and liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFairValueFinancialAssetsAndLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFairValueFinancialAssetsAndLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Fair Value Financial Assets And Liabilities [table]",
        "terseLabel": "Disclosure Of Fair Value Financial Assets And Liabilities [table]",
        "documentation": "Disclosure Of Fair Value Financial Assets And Liabilities Table"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValue"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement [text block]",
        "terseLabel": "Fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for fair value measurement."
       }
      }
     },
     "auth_ref": [
      "r185"
     ]
    },
    "aeg_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets and liabilities [abstract]",
        "documentation": "Disclosure of fair value measurement of assets and liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets and liabilities [line items]",
        "terseLabel": "Disclosure of fair value measurement of assets and liabilities [line items]",
        "documentation": "Disclosure of Fair Value Measurement of Assets and Liabilities [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFairValueMeasurementOfAssetsAndLiabilityTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsAndLiabilityTable",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets and liability [table]",
        "terseLabel": "Disclosure of fair value measurement of assets and liability [table]",
        "documentation": "Disclosure of fair value measurement of assets and liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets [text block]",
        "terseLabel": "Schedule of Fair Values of Available-for-Sale (AFS) Instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the fair value measurement of assets."
       }
      }
     },
     "auth_ref": [
      "r184",
      "r586"
     ]
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets [line items]",
        "terseLabel": "Disclosure of fair value measurement of assets and liabilities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueMeasurementOfAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value measurement of assets [table]",
        "terseLabel": "Disclosure of fair value measurement of assets and liabilitiy [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the fair value measurement of assets."
       }
      }
     },
     "auth_ref": [
      "r184",
      "r586"
     ]
    },
    "ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueOfFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value of financial instruments [text block]",
        "terseLabel": "Summary of the Analysis of Assets and Liabilities Recorded at Fair Value on a Recurring Basis by Level of the Fair Value Hierarchy"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the fair value of financial instruments. [Refer: Classes of financial instruments [domain]; At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfFairValueOfPlanAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueOfPlanAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value of plan assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueOfPlanAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueOfPlanAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value of plan assets [text block]",
        "terseLabel": "Summary of Breakdown of Plan Assets for Retirement of Benefit Plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the fair value of defined benefit plan assets. [Refer: Plan assets [member]; Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r30",
      "r478"
     ]
    },
    "ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueOfPlanAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value of plan assets [line items]",
        "terseLabel": "Disclosure of fair value of plan assets [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFairValueOfPlanAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFairValueOfPlanAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of fair value of plan assets [table]",
        "terseLabel": "Disclosure of fair value of plan assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the fair value of defined benefit plan assets."
       }
      }
     },
     "auth_ref": [
      "r30",
      "r478"
     ]
    },
    "aeg_DisclosureOfFeeAndCommissionIncomeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFeeAndCommissionIncomeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Fee And Commission Income Explanatory",
        "terseLabel": "Fees and commission income",
        "documentation": "The disclosure of fee and commission income explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinanceIncomeExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinanceIncomeExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ResultsFromFinancialTransactions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of finance income (cost) [text block]",
        "terseLabel": "Results from financial transactions"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfFinancialAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [text block]",
        "terseLabel": "Summary of Financial Assets Excluding Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r343",
      "r530"
     ]
    },
    "ifrs-full_DisclosureOfFinancialAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [line items]",
        "terseLabel": "Disclosure of financial assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancialAssetsMeasuredAtAmortizedCostLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialAssetsMeasuredAtAmortizedCostLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Assets Measured At Amortized Cost [Line Items]",
        "terseLabel": "Disclosure of financial assets measured at amortized cost [Line Items]",
        "documentation": "Disclosure of financial assets measured at amortized cost line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancialAssetsMeasuredAtAmortizedCostTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialAssetsMeasuredAtAmortizedCostTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Assets Measured At Amortized Cost [Table]",
        "terseLabel": "Disclosure of financial assets measured at amortized cost [Table]",
        "documentation": "Disclosure of financial assets measured at amortized cost table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsLineItems",
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Assets Subject To Offsetting Enforceable Master Netting Arrangements and Similar Agreements [Line Items]",
        "terseLabel": "Disclosure of financial assets subject to offsetting enforceable master netting arrangements and similar agreements [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsTable",
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Assets Subject To Offsetting Enforceable Master Netting Arrangements and Similar Agreements [Table]",
        "terseLabel": "Disclosure of financial assets subject to offsetting enforceable master netting arrangements and similar agreements [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial assets [table]",
        "terseLabel": "Disclosure of financial assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to financial assets."
       }
      }
     },
     "auth_ref": [
      "r343",
      "r530"
     ]
    },
    "ifrs-full_DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transferred financial assets that are not derecognised in their entirety [text block]",
        "terseLabel": "Summary of Carrying Amount of Financial Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of transferred financial assets that are not derecognised in their entirety. [Refer: Transferred financial assets that are not derecognised in their entirety [domain]]"
       }
      }
     },
     "auth_ref": [
      "r339",
      "r573"
     ]
    },
    "aeg_DisclosureOfFinancialInformationOfAssociates": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialInformationOfAssociates",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Information Of Associates",
        "terseLabel": "Schedule Of Financial Information Of Associates",
        "documentation": "The disclosure of financial information of associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancialInformationOfJointVenturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialInformationOfJointVenturesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial information of joint ventures [text block]",
        "terseLabel": "Summary of Financial Information of Joint Ventures",
        "documentation": "Disclosure of financial information of joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial instruments at fair value through profit or loss [text block]",
        "terseLabel": "Carrying Values and Estimated Fair Values of Assets and Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of financial instruments measured at fair value through profit or loss. [Refer: At fair value [member]; Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial instruments [text block]",
        "terseLabel": "Transfers of financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for financial instruments."
       }
      }
     },
     "auth_ref": [
      "r358"
     ]
    },
    "aeg_DisclosureOfFinancialInvestmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialInvestmentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SummaryOfInvestmentsOtherThanInvestmentsInRelatedParties"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Financial Investments [text block]",
        "terseLabel": "Summary of investments other than investments in related parties",
        "documentation": "The entire disclosure of financial investments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfFinancialRiskManagementExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfFinancialRiskManagementExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisks"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of financial risk management [text block]",
        "terseLabel": "Financial risks"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the entity's financial risk management practices and policies."
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfFinancialRiskManagementLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialRiskManagementLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Risk Management [line items]",
        "terseLabel": "Disclosure of financial risk management [line items]",
        "documentation": "Line items represents information about financial risk management."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancialRiskManagementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancialRiskManagementTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financial Risk Management [table]",
        "terseLabel": "Disclosure Of Financial Risk Management [table]",
        "documentation": "Schedule disclosing information about financial risk management."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFinancingNetInvestmentResultExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFinancingNetInvestmentResultExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResult"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Financing Net Investment Result Explanatory",
        "verboseLabel": "Financing net investment result",
        "documentation": "Disclosure of financing net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfForeignExchangeRatesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfForeignExchangeRatesTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Foreign Exchange Rates [table]",
        "terseLabel": "Disclosure Of Foreign Exchange Rates [table]",
        "documentation": "Disclosure Of Foreign Exchange Rates [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFutureNetCashFlowLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFutureNetCashFlowLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Future Net Cash Flow [line items]",
        "terseLabel": "Disclosure of future net cash flow [Line Items]",
        "documentation": "Disclosure of future net cash flow [line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfFutureNetCashFlowTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfFutureNetCashFlowTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Future Net Cash Flow [table]",
        "terseLabel": "Disclosure Of Future Net Cash Flow [table]",
        "documentation": "Disclosure of future net cash flow table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGainLossOnFairValueHedgeIneffectiveness": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGainLossOnFairValueHedgeIneffectiveness",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of gain (loss) on fair value hedge ineffectiveness",
        "documentation": "Disclosure of gain (loss) on fair value hedge ineffectiveness."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGainsLossesOnCashFlowHedgeIneffectivenessLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGainsLossesOnCashFlowHedgeIneffectivenessLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Gains Losses On Cash Flow Hedge Ineffectiveness [Line Items]",
        "terseLabel": "Disclosure Of Gains Losses On Cash Flow Hedge Ineffectiveness [Line Items]",
        "documentation": "Disclosure of gains losses on cash flow hedge ineffectiveness [Line Items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGainsLossesOnCashFlowHedgeIneffectivenessTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGainsLossesOnCashFlowHedgeIneffectivenessTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Gains Losses On Cash Flow Hedge Ineffectiveness [Table]",
        "terseLabel": "Disclosure Of Gains Losses On Cash Flow Hedge Ineffectiveness [Table]",
        "documentation": "Disclosure of gains losses on cash flow hedge ineffectiveness [Table]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGainsOrLossesIncludedInProfitOrLossFinancialAssetsAndLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGainsOrLossesIncludedInProfitOrLossFinancialAssetsAndLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of gains or losses included in profit or loss financial assets and liabilities explanatory",
        "terseLabel": "Summary of Gains and losses recognized in the income statement on financial assets and financial liabilities",
        "documentation": "Disclosure of gains or losses included in profit or loss financial assets and liabilities explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of general information about financial statements [text block]",
        "terseLabel": "General information"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for general information about financial statements."
       }
      }
     },
     "auth_ref": [
      "r431",
      "r623"
     ]
    },
    "aeg_DisclosureOfGeneralInformationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGeneralInformationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of general information [abstract]",
        "documentation": "Disclosure of general information."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGeneralInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGeneralInformationLineItems",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformation",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of general information [line items]",
        "terseLabel": "Disclosure of general information [Line Items]",
        "documentation": "Line item represents disclosure of general information."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGeneralInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGeneralInformationTable",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformation",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of General Information [table]",
        "terseLabel": "Disclosure of General Information [table]",
        "documentation": "Disclosure of general information."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGroupLimitsPerCreditRatingLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGroupLimitsPerCreditRatingLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Group Limits Per Credit Rating [line items]",
        "terseLabel": "Disclosure of group limits per credit rating [line items]",
        "documentation": "Disclosure of group limits per credit rating."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfGroupLimitsPerCreditRatingTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfGroupLimitsPerCreditRatingTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Group Limits Per Credit Rating [table]",
        "terseLabel": "Disclosure of Group Limits Per Credit Rating [table]",
        "documentation": "Disclosure of Group Limits Per Credit Rating [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfHistoricalNetIncomeLossAndShareholdersEquityLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfHistoricalNetIncomeLossAndShareholdersEquityLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Historical Net Income (Loss) and Shareholders' Equity [line items]",
        "terseLabel": "Disclosure of historical net income (loss) and shareholders' equity [line items]",
        "documentation": "Disclosure of historical net income (loss) and shareholders' equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfHistoricalNetIncomeLossAndShareholdersEquityTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfHistoricalNetIncomeLossAndShareholdersEquityTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Historical Net Income (Loss) and Shareholders' Equity [table]",
        "terseLabel": "Disclosure of Historical Net Income (Loss) and Shareholders' Equity [table]",
        "documentation": "Disclosure of Historical Net Income (Loss) and Shareholders' Equity [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfImpairmentLossAndReversalOfImpairmentLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfImpairmentLossAndReversalOfImpairmentLossAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of impairment loss and reversal of impairment loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables",
      "http://www.aegon.com/role/OtherNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of impairment loss and reversal of impairment loss [text block]",
        "terseLabel": "Summary of impairment charges / (reversals)",
        "verboseLabel": "Summary of Impairment (losses) / reversals"
       }
      }
     },
     "auth_ref": [
      "r72",
      "r494"
     ]
    },
    "ifrs-full_DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of impairment loss and reversal of impairment loss [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfImpairmentLossAndReversalOfImpairmentLossTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfImpairmentLossAndReversalOfImpairmentLossTable",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of impairment loss and reversal of impairment loss [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to impairment loss and the reversal of impairment loss."
       }
      }
     },
     "auth_ref": [
      "r72",
      "r494"
     ]
    },
    "aeg_DisclosureOfIncomeTaxExpenseBenefitsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfIncomeTaxExpenseBenefitsLineItems",
     "presentation": [
      "http://www.aegon.com/role/IncomeTax",
      "http://www.aegon.com/role/IncomeTaxTables",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax expense benefits [line items]",
        "terseLabel": "Disclosure of Income Tax Expense Benefits [line items]",
        "documentation": "Line items represents information about income tax expense benefits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfIncomeTaxExpenseBenefitsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfIncomeTaxExpenseBenefitsTable",
     "presentation": [
      "http://www.aegon.com/role/IncomeTax",
      "http://www.aegon.com/role/IncomeTaxTables",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax expense benefits [table]",
        "terseLabel": "Disclosure of Income Tax Expense Benefits [Table]",
        "documentation": "Schedule disclosing information about income tax expense benefits."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIncomeTaxExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IncomeTax"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax [text block]",
        "terseLabel": "Income tax"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for income taxes."
       }
      }
     },
     "auth_ref": [
      "r11"
     ]
    },
    "aeg_DisclosureOfIncomeTaxRecognizedDirectlyInRetainedEarningsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfIncomeTaxRecognizedDirectlyInRetainedEarningsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Income Tax Recognized Directly In Retained Earnings Explanatory",
        "terseLabel": "Summary of Income Tax Recognized Directly in Retained Earnings",
        "documentation": "Disclosure of income tax recognized directly in retained earnings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfIncomeTaxReconciliationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfIncomeTaxReconciliationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of income tax reconciliation [abstract]",
        "documentation": "Disclosure of income tax reconciliation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Income Tax Relating To Components Of Other Comprehensive Income Explanatory",
        "terseLabel": "Summary of Income Tax Related to Components of Other Comprehensive Income",
        "documentation": "Disclosure of income tax relating to components of other comprehensive income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about credit exposures designated as measured at fair value through profit or loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about credit exposures designated as measured at fair value through profit or loss [text block]",
        "terseLabel": "Summary of Nominal Amount and Fair Value of Credit Derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about credit exposures designated as measured at fair value through profit or loss."
       }
      }
     },
     "auth_ref": [
      "r321"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about credit exposures designated as measured at fair value through profit or loss [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about credit exposures designated as measured at fair value through profit or loss [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to credit exposures designated as measured at fair value through profit or loss."
       }
      }
     },
     "auth_ref": [
      "r321"
     ]
    },
    "aeg_DisclosureOfInformationAboutCreditQualityExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInformationAboutCreditQualityExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Information About Credit Quality Explanatory",
        "terseLabel": "Schedule of Ratings Distribution of General Account Portfolios",
        "documentation": "Disclosure of information about credit quality explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about expected recognition of contractual service margin in profit or loss [text block]",
        "terseLabel": "Summary of Information about Expected Recognition of Contractual Service Margin in Profit or Loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about the expected recognition of the contractual service margin in profit or loss. [Refer: Contractual service margin [member]]"
       }
      }
     },
     "auth_ref": [
      "r241"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutExpectedRecognitionOfContractualServiceMarginInProfitOrLossTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about expected recognition of contractual service margin in profit or loss [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the expected recognition of the contractual service margin in profit or loss."
       }
      }
     },
     "auth_ref": [
      "r241"
     ]
    },
    "aeg_DisclosureOfInformationAboutNumberOfEmployeesTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInformationAboutNumberOfEmployeesTextBlock",
     "presentation": [
      "http://www.aegon.com/role/NumberOfEmployees"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Information About Number Of Employees [Text Block]",
        "terseLabel": "Number of employees",
        "documentation": "The entire disclosure of information about number of employees."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInformationAboutProbabilityDefaultRateAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInformationAboutProbabilityDefaultRateAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Information About Probability Default Rate [Abstract]",
        "documentation": "Disclosure of information about probability default rate abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInformationAboutProbabilityDefaultRateExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInformationAboutProbabilityDefaultRateExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Information About Probability Default Rate Explanatory",
        "terseLabel": "Summary of information about probability default rate explanatory",
        "documentation": "Disclosure of information about probability default rate explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInformationAboutProbabilityDefaultRateLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInformationAboutProbabilityDefaultRateLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Information About Probability Default Rate [Line Items]",
        "documentation": "Disclosure of information about probability default rate line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInformationAboutProbabilityDefaultRateTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInformationAboutProbabilityDefaultRateTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Information About Probability Default Rate [Table]",
        "documentation": "Disclosure of information about probability default rate table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [text block]",
        "terseLabel": "Summary of Information about Terms and Conditions of Hedging Instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information about the terms and conditions of hedging instruments and how they affect future cash flows. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r302",
      "r416"
     ]
    },
    "ifrs-full_DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the terms and conditions of hedging instruments and how they affect future cash flows."
       }
      }
     },
     "auth_ref": [
      "r302"
     ]
    },
    "ifrs-full_DisclosureOfInsuranceContractsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInsuranceContractsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResult"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of insurance contracts [text block]",
        "verboseLabel": "Insurance net investment result"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for insurance contracts."
       }
      }
     },
     "auth_ref": [
      "r271"
     ]
    },
    "aeg_DisclosureOfInsuranceContractsReinsuranceContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceContractsReinsuranceContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Insurance Contracts Reinsurance Contracts held and Investment Contracts with Discretionary Participating Features [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceContractsReinsuranceContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceContractsReinsuranceContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Insurance Contracts Reinsurance Contracts held and Investment Contracts with Discretionary Participating Features [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceContractsReinsuranceContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceContractsReinsuranceContractsHeldAndInvestmentContractsWithDiscretionaryParticipatingFeaturesTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Insurance Contracts Reinsurance Contracts held and Investment Contracts with Discretionary Participating Features [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment [Abstract]",
        "terseLabel": "Disclosure of insurance net investment [abstract]",
        "documentation": "Disclosure of insurance net investment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInImpairmentLossesReversalsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInImpairmentLossesReversalsLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Impairment Losses Reversals [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInImpairmentLossesReversalsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInImpairmentLossesReversalsTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Impairment Losses Reversals [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method [Line Items]",
        "documentation": "Disclosure of insurance net investment result in interest revenue on financial instruments calculated using the effective interest method line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method [Table]",
        "documentation": "Disclosure of insurance net investment result in interest revenue on financial instruments calculated using the effective interest method table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss [Line Items]",
        "definitionGuidance": "Interest income from instruments measured at FVPL",
        "documentation": "Disclosure of insurance net investment result in interest revenue on financial instruments measured at fair value through profit or loss line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss [Table]",
        "documentation": "Disclosure of insurance net investment result in interest revenue on financial instruments measured at fair value through profit or loss table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInOtherInvestmentIncomeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInOtherInvestmentIncomeLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Other Investment Income [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultInOtherInvestmentIncomeTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultInOtherInvestmentIncomeTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment Result In Other Investment Income [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentResultLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentResultLineItems",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of insurance net investment result [Line Items]",
        "terseLabel": "Disclosure of insurance net investment result [line items]",
        "documentation": "Disclosure of insurance net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceNetInvestmentTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceNetInvestmentTable",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Net Investment [Table]",
        "terseLabel": "Disclosure of insurance net investment [table]",
        "documentation": "Disclosure of insurance net investment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInsuranceServiceExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInsuranceServiceExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpense"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Insurance Service Expenses Explanatory",
        "terseLabel": "Insurance service expense",
        "documentation": "Disclosure of insurance service expenses explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfIntangibleAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about intangible assets [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfIntangibleAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of intangible assets [text block]",
        "terseLabel": "Intangible assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for intangible assets."
       }
      }
     },
     "auth_ref": [
      "r94"
     ]
    },
    "ifrs-full_DisclosureOfIntangibleAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about intangible assets [line items]",
        "terseLabel": "Disclosure of detailed information about intangible assets [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfIntangibleAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfIntangibleAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about intangible assets [table]",
        "terseLabel": "Disclosure of detailed information about intangible assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to details of intangible assets."
       }
      }
     },
     "auth_ref": [
      "r92",
      "r508"
     ]
    },
    "aeg_DisclosureOfInterestChargesAndRelatedFeesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestChargesAndRelatedFeesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Charges And Related Fees [Text block]",
        "terseLabel": "Interest charges and related fees",
        "documentation": "Disclosure of interest charges and related fees."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestChargesAndRelatedFeesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestChargesAndRelatedFeesLineItems",
     "presentation": [
      "http://www.aegon.com/role/InterestChargesAndRelatedFees",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interest charges and related fees [Line items]",
        "terseLabel": "Disclosure of interest charges and related fees [line items]",
        "documentation": "Disclosure of interest charges and related fees."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestChargesAndRelatedFeesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestChargesAndRelatedFeesTable",
     "presentation": [
      "http://www.aegon.com/role/InterestChargesAndRelatedFees",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interest charges and related fees [table]",
        "terseLabel": "Disclosure of Interest Charges and Related Fees [Table]",
        "documentation": "Disclosure of interest charges and related fees."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInterestExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInterestExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InterestChargesAndRelatedFees"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interest expense [text block]",
        "terseLabel": "Interest charges and related fees"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfInterestRateTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRateTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Rate [table]",
        "terseLabel": "Disclosure Of Interest Rate [table]",
        "documentation": "Disclosure Of Interest Rate [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRatesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRatesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Interest Rates [line items]",
        "terseLabel": "Disclosure of interest rates [line items]",
        "documentation": "Disclosure of interest rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodExplantory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodExplantory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables",
      "http://www.aegon.com/role/OtherNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method Explantory",
        "verboseLabel": "Summary of interest revenue on financial instruments calculated using the effective interest method",
        "terseLabel": "Summary of interest revenue on financial instruments calculated using the effective interest method",
        "documentation": "Disclosure of interest revenue on financial instruments calculated using the effective interest method."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodTable",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss [Abstract]",
        "documentation": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables",
      "http://www.aegon.com/role/OtherNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss Explanatory",
        "verboseLabel": "Summary of interest income from instruments measured at fair value through profit or loss",
        "documentation": "Disclosure of interest revenue on financial instruments measured at fair value through profit or loss"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss [Line Items]",
        "documentation": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossTable",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss [Table]",
        "documentation": "Disclosure Of Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestsInOtherEntitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestsInOtherEntitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interests in other entities [abstract]",
        "documentation": "Disclosure of interests in other entities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInterestsInOtherEntitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompanies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of interests in other entities [text block]",
        "terseLabel": "Shares in group companies"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for interests in other entities."
       }
      }
     },
     "auth_ref": [
      "r140"
     ]
    },
    "aeg_DisclosureOfInterestsInOtherEntitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestsInOtherEntitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interests In Other Entities [line items]",
        "terseLabel": "Disclosure of interests in other entities [Line Items]",
        "documentation": "Disclosure Of Interests In Other Entities [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInterestsInOtherEntitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInterestsInOtherEntitiesTable",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Interests In Other Entities [table]",
        "terseLabel": "Disclosure Of Interests In Other Entities [table]",
        "documentation": "Disclosure Of Interests In Other Entities [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInternalCreditExposuresAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInternalCreditExposuresAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of internal credit grades [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInternalCreditExposuresLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInternalCreditExposuresLineItems",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of internal credit grades [line items]",
        "terseLabel": "Disclosure of internal credit grades [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInternalCreditExposuresTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInternalCreditExposuresTable",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of internal credit grades [table]",
        "terseLabel": "Disclosure of internal credit grades [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to internal credit grades."
       }
      }
     },
     "auth_ref": [
      "r602",
      "r781"
     ]
    },
    "aeg_DisclosureOfInternalCreditRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInternalCreditRiskExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Internal Credit Risk Explanatory",
        "terseLabel": "Credit Derivative Disclosure By Quality",
        "documentation": "Disclosure of internal credit risk explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentContractsGeneralAndSeparateAccountLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentContractsGeneralAndSeparateAccountLineItems",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investment Contracts General And Separate Account [Line Items]",
        "terseLabel": "Disclosure of investment contracts general and separate accounts [Line Items]",
        "documentation": "Disclosure Of Investment Contracts General And Separate Account [Line Items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentContractsGeneralAndSeparateAccountTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentContractsGeneralAndSeparateAccountTable",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investment Contracts General And Separate Accounts [Table]",
        "documentation": "Disclosure Of Investment Contracts General And Separate Account [Table]."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInvestmentContractsLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInvestmentContractsLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeatures"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of investment contracts liabilities [text block]",
        "verboseLabel": "Investment contracts without discretionary participation features"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of investment contracts liabilities. [Refer: Investment contracts liabilities]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfInvestmentContractsWithoutDiscretionaryParticipationFeaturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentContractsWithoutDiscretionaryParticipationFeaturesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investment Contracts Without Discretionary Participation Features Explanatory",
        "terseLabel": "Summary of Investment Contracts Without Discretionary Participation Features",
        "documentation": "Disclosure of investment contracts without discretionary participation features explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Investment Income [abstract]",
        "documentation": "Disclosure of Investment Income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentIncomeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentIncomeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncome"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Investment Income [text block]",
        "terseLabel": "Investment income",
        "documentation": "Disclosure of investment income explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentIncomeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentIncomeLineItems",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncome",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Investment Income [Line Items]",
        "terseLabel": "Disclosure of investment income [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentIncomeTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentIncomeTable",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsTables",
      "http://www.aegon.com/role/CommissionsAndExpenses",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/FinancialRisksTables",
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
      "http://www.aegon.com/role/FinancingNetInvestmentResultTables",
      "http://www.aegon.com/role/InvestmentIncome",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail",
      "http://www.aegon.com/role/InvestmentIncomeTables",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of investment income [table]",
        "terseLabel": "Disclosure of investment income [table]",
        "documentation": "Disclosure of investment income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfInvestmentPropertyAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfInvestmentPropertyAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of detailed information about investment property [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentRevenueExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentRevenueExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncomeTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investment Revenue [text block]",
        "terseLabel": "Summary of Investment Income",
        "documentation": "Disclosure of investment revenue."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Investments [abstract]",
        "documentation": "Disclosure of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Investments"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investments [text block]",
        "terseLabel": "Investments",
        "documentation": "The entire disclosure of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsInFinancialAssetsAndRealEstateAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsInFinancialAssetsAndRealEstateAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of investments in financial assets and real estate [abstract]",
        "documentation": "Disclosure of investments in financial assets and real estate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsInFinancialAssetsAndRealEstateExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsInFinancialAssetsAndRealEstateExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investments In Financial Assets And Real Estate [text block]",
        "terseLabel": "Summary of Investments for General Accounts Comprise Financial Assets Excluding Derivatives And Investments in Real Estate",
        "documentation": "The disclosure of investments in financial assets and real estate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsInFinancialAssetsAndRealEstateLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsInFinancialAssetsAndRealEstateLineItems",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of investments in financial assets and real estate [line items]",
        "terseLabel": "Disclosure of investments in financial assets and real estate [line items]",
        "documentation": "The disclosure of line items(s) of investments in financial assets and real estate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsInFinancialAssetsAndRealEstateTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsInFinancialAssetsAndRealEstateTable",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of investments in financial assets and real estate [table]",
        "terseLabel": "Disclosure of investments in financial assets and real estate [table]",
        "documentation": "Tabular disclosure of investments in financial assets and real estate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsInJointVenturesAndAssociates": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsInJointVenturesAndAssociates",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociates"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Investments in Joint Ventures and Associates",
        "verboseLabel": "Investments in joint ventures and associates",
        "documentation": "Disclosure of Investments in joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsInSubsidiariesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsInSubsidiariesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investments In Subsidiaries Explanatory",
        "documentation": "Disclosure of investments in subsidiaries explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investments [line items]",
        "terseLabel": "Disclosure of investments [Line Items]",
        "documentation": "Disclosure of investments line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfInvestmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfInvestmentsTable",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Investments [table]",
        "terseLabel": "Disclosure Of Investments [table]",
        "documentation": "Disclosure of investments table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfJointVenturesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of joint ventures [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfJointVenturesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesLineItems",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of joint ventures [line items]",
        "terseLabel": "Disclosure of joint ventures [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfJointVenturesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfJointVenturesTable",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of joint ventures [table]",
        "terseLabel": "Disclosure of joint ventures [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to joint ventures."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r171",
      "r575"
     ]
    },
    "aeg_DisclosureOfKeyManagementPersonnelCompensationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfKeyManagementPersonnelCompensationLineItems",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of key management personnel compensation [line items]",
        "terseLabel": "Disclosure of key management personnel compensation [line items]",
        "documentation": "Disclosure of key management personnel compensation line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfKeyManagementPersonnelCompensationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfKeyManagementPersonnelCompensationTable",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of key management personnel compensation [table]",
        "terseLabel": "Disclosure of key management personnel compensation [table]",
        "documentation": "Disclosure of key management personnel compensation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Loans to subsidiaries, joint ventures and associates [abstract]",
        "documentation": "Disclosure of Loans to subsidiaries, joint ventures and associates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompanies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Loans to Subsidiaries, Joint Ventures and Associates [text block]",
        "terseLabel": "Loans to group companies",
        "documentation": "Disclosure of Loans to Subsidiaries, Joint Ventures and Associates [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesLineItems",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompanies",
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail",
      "http://www.aegon.com/role/LoansToGroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Loans to Subsidiaries Joint Ventures and Associates [Line items]",
        "terseLabel": "Disclosure of Loans to Subsidiaries Joint Ventures and Associates [Line items]",
        "documentation": "Disclosure of Loans to Subsidiaries Joint Ventures and Associates [Line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLoansToSubsidiariesJointVenturesAndAssociatesTable",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompanies",
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail",
      "http://www.aegon.com/role/LoansToGroupCompaniesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of loans to Subsidiaries Joint Ventures and Associates [table]",
        "terseLabel": "Disclosure of loans to Subsidiaries Joint Ventures and Associates [table]",
        "documentation": "Disclosure of loans to Subsidiaries Joint Ventures and Associates [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLongTermBorrowingsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLongTermBorrowingsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/LongTermBorrowings"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Long Term Borrowings Explanatory",
        "terseLabel": "Long-term borrowings",
        "documentation": "The entire disclosure of long term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLongtermBorrowingsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLongtermBorrowingsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Long-term Borrowings [abstract]",
        "documentation": "Disclosure of long-term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLongtermBorrowingsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLongtermBorrowingsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/LongTermBorrowings",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Long-term Borrowings [line items]",
        "terseLabel": "Disclosure of long-term borrowings [Line Items]",
        "documentation": "Disclosure of long-term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfLongtermBorrowingsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfLongtermBorrowingsTable",
     "presentation": [
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/LongTermBorrowings",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Long-term Borrowings [table]",
        "terseLabel": "Disclosure of Long-term Borrowings [table]",
        "documentation": "Disclosure of long-term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfManagingLiquidityRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfManagingLiquidityRiskExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Managing Liquidity Risk [table text block]",
        "terseLabel": "Summary of Maturity Analysis Gross Undiscounted Contractual Cash Flows",
        "documentation": "The disclosure of managing liquidity risk."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMarketRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMarketRiskExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of market risk [text block]",
        "terseLabel": "Summary of Market Risk Concentrations in Shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of market risk. [Refer: Market risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfMaterialAccountingPolicyInformationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaterialAccountingPolicyInformationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Material Accounting Policy Information [Abstract]",
        "documentation": "Disclosure of material accounting policy information abstract."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaterialAccountingPolicyInformationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of material accounting policy information [text block]",
        "terseLabel": "Material accounting policies information"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure of material accounting policy information applied by the entity."
       }
      }
     },
     "auth_ref": [
      "r448",
      "r594",
      "r615"
     ]
    },
    "aeg_DisclosureOfMaturityAnalysisForDerivativeFinancialAssetsAndDerivativeFinancialLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaturityAnalysisForDerivativeFinancialAssetsAndDerivativeFinancialLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maturity Analysis For Derivative Financial Assets And Derivative Financial Liabilities [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfMaturityAnalysisForDerivativeFinancialAssetsAndDerivativeFinancialLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaturityAnalysisForDerivativeFinancialAssetsAndDerivativeFinancialLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maturity Analysis For Derivative Financial Assets And Derivative Financial Liabilities [Line Items]",
        "terseLabel": "Disclosure of maturity analysis for derivative financial assets and derivative financial liabilities [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfMaturityAnalysisForDerivativeFinancialAssetsAndDerivativeFinancialLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaturityAnalysisForDerivativeFinancialAssetsAndDerivativeFinancialLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maturity Analysis For Derivative Financial Assets And Derivative Financial Liabilities [Table]",
        "terseLabel": "Disclosure of maturity analysis for derivative financial assets and derivative financial liabilities [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]",
        "terseLabel": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [table]",
        "terseLabel": "Disclosure of maturity analysis for financial assets held for managing liquidity risk [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the maturity analysis for financial assets held for managing liquidity risk."
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "aeg_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maturity Analysis For Liquidity Risk That Arises From Contracts Expected Release Of Risk Adjustments [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maturity Analysis For Liquidity Risk That Arises From Contracts Expected Release Of Risk Adjustments [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maturity Analysis For Liquidity Risk That Arises From Contracts Expected Release Of Risk Adjustments [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Abstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Abstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Explanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Explanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [text block]",
        "terseLabel": "Summary of Maturity Analysis - Insurance and Reinsurance Contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the maturity analysis for liquidity risk that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r257"
     ]
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17LineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Table": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsWithinScopeOfIFRS17Table",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the maturity analysis for liquidity risk that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r257"
     ]
    },
    "aeg_DisclosureOfMaximumExposureToCreditRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMaximumExposureToCreditRiskExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Maximum Exposure To Credit Risk Explanatory",
        "terseLabel": "Schedule of Maximum Exposure to Credit Risk",
        "documentation": "The disclosure of maximum exposure to credit risk."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfMovementByMeasurementComponentInsuranceReinsuranceContractsAndInvestmentContractsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMovementByMeasurementComponentInsuranceReinsuranceContractsAndInvestmentContractsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Movement By Measurement Component Insurance Reinsurance Contracts And Investment Contracts [Line Items]",
        "terseLabel": "Disclosure of movement by measurement component insurance reinsurance contracts and investment contracts [line items]",
        "documentation": "The line items of disclosure of movement by measurement component insurance reinsurance contracts and investment contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfMovementsInProvisionForAllowancesForDoubtfulDebtsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfMovementsInProvisionForAllowancesForDoubtfulDebtsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of movements in provision for allowances for doubtful debts explanatory",
        "terseLabel": "Summary of Movements in the Expected Credit Losses",
        "documentation": "The disclosure of movements in provision for allowances for doubtful debts."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [text block]",
        "terseLabel": "Summary of Movements of Defined Benefit Plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of a net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r20",
      "r471"
     ]
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetLineItems",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [line items]",
        "terseLabel": "Disclosure of net defined benefit liability (asset) [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNetDefinedBenefitLiabilityAssetTable",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of net defined benefit liability (asset) [table]",
        "terseLabel": "Disclosure of net defined benefit liability (asset) [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the net defined benefit liability (asset)."
       }
      }
     },
     "auth_ref": [
      "r20",
      "r471"
     ]
    },
    "aeg_DisclosureOfNetExpensesOnReinsuranceHeldExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNetExpensesOnReinsuranceHeldExplanatory",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeld"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Net Expenses on Reinsurance Held Explanatory",
        "terseLabel": "Net income / (expenses) on reinsurance held",
        "documentation": "Disclosure of net expenses on reinsurance held explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNonCurrentAssets": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNonCurrentAssets",
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Non Current Assets",
        "terseLabel": "Disclosure of Non Current Assets",
        "documentation": "Disclosure of Non Current Assets"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNonCurrentAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNonCurrentAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Non Current Assets [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNonCurrentAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNonCurrentAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssets",
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
      "http://www.aegon.com/role/NonCurrentAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Non Current Assets [Line Items]",
        "documentation": "Disclosure of non current assets [Line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNonCurrentAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNonCurrentAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssets",
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
      "http://www.aegon.com/role/NonCurrentAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Non Current Assets [Table]",
        "documentation": "Disclosure of non current assets [Table]."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of non-adjusting events after reporting period [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriod",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of non-adjusting events after reporting period [line items]",
        "terseLabel": "Disclosure of non-adjusting events after reporting period [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNonadjustingEventsAfterReportingPeriodTable",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriod",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of non-adjusting events after reporting period [table]",
        "terseLabel": "Disclosure of non-adjusting events after reporting period [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to non-adjusting events after the reporting period."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r455"
     ]
    },
    "ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of number and weighted average exercise prices of other equity instruments [text block]",
        "terseLabel": "Disclosure - Other Equity Instruments - Summary of Other Equity Instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the number and weighted average exercise prices of other equity instruments (ie other than share options)."
       }
      }
     },
     "auth_ref": [
      "r936"
     ]
    },
    "aeg_DisclosureOfNumberOfEmployeesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNumberOfEmployeesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Number Of Employees [abstract]",
        "documentation": "Disclosure of number of employees ."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNumberOfEmployeesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNumberOfEmployeesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Number Of Employees [text block]",
        "terseLabel": "Summary of Number of Employees",
        "documentation": "The disclosure of number of employees."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNumberOfEmployeesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNumberOfEmployeesLineItems",
     "presentation": [
      "http://www.aegon.com/role/NumberOfEmployees",
      "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of number of employees [line items]",
        "terseLabel": "Disclosure of number of employees [line items]",
        "documentation": "Disclosure of number of employees."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfNumberOfEmployeesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfNumberOfEmployeesTable",
     "presentation": [
      "http://www.aegon.com/role/NumberOfEmployees",
      "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of number of employees [table]",
        "terseLabel": "Disclosure of number of employees [table]",
        "documentation": "Disclosure of number of employees."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvency"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of objectives, policies and processes for managing capital [text block]",
        "terseLabel": "Capital management and solvency"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of information that enables users of financial statements to evaluate the entity's objectives, policies and processes for managing capital."
       }
      }
     },
     "auth_ref": [
      "r616"
     ]
    },
    "aeg_DisclosureOfOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Offsetting Enforceable Master Netting Arrangements And Similar Agreements [text block]",
        "terseLabel": "Offsetting, enforceable master netting arrangements, and similar agreements",
        "documentation": "The entire disclosure of offsetting enforceable master netting arrangements and similar agreements."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Offsetting Of Financial Assets And Financial Liabilities [abstract]",
        "documentation": "Disclosure of offsetting of financial assets and financial liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of offsetting of financial assets and financial liabilities [text block]",
        "terseLabel": "Summary of Financial Instruments Set Off in Statement of Financial Position"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the offsetting of financial assets and financial liabilities. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r357"
     ]
    },
    "ifrs-full_DisclosureOfOperatingSegmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOperatingSegmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [line items]",
        "terseLabel": "Disclosure of operating segments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOperatingSegmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOperatingSegmentsTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of operating segments [table]",
        "terseLabel": "Disclosure of operating segments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to operating segments."
       }
      }
     },
     "auth_ref": [
      "r364"
     ]
    },
    "aeg_DisclosureOfOtherAssetsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other assets [abstract]",
        "documentation": "Disclosure of other assets [abstract]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherAssetsAndReceivablesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsAndReceivablesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Assets And Receivables [abstract]",
        "documentation": "Disclosure Of Other Assets And Receivables [abstract]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherAssetsAndReceivablesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsAndReceivablesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other assets and receivables [text block]",
        "terseLabel": "Other assets and receivables",
        "documentation": "The entire disclosure of other assets and receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherAssetsAndReceivablesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsAndReceivablesLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Assets And Receivables [line items]",
        "terseLabel": "Disclosure of other assets and receivables [Line Items]",
        "documentation": "Disclosure of other assets and receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherAssetsAndReceivablesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsAndReceivablesTable",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Assets And Receivables [table]",
        "terseLabel": "Disclosure Of Other Assets And Receivables [table]",
        "documentation": "Disclosure Of Other Assets And Receivables [table]."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherCurrentAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other assets [text block]",
        "terseLabel": "Other current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other assets. [Refer: Other assets]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfOtherAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherCurrentAssets",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Other Assets [line items]",
        "terseLabel": "Disclosure of other assets [Line Items]",
        "documentation": "Disclosure of other assets [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/OtherCurrentAssets",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Other Assets [table]",
        "terseLabel": "Disclosure of Other Assets [table]",
        "documentation": "Disclosure of other assets [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherChargesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherChargesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other charges [abstract]",
        "documentation": "Disclosure of other charges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherChargesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherChargesLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other charges [line items]",
        "terseLabel": "Disclosure of other charges [line items]",
        "documentation": "Disclosure of other charges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherChargesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherChargesTable",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Charges [table]",
        "terseLabel": "Disclosure of Other Charges [Table]",
        "documentation": "Disclosure of other charges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherCommitmentsAndContingenciesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherCommitmentsAndContingenciesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Commitments And Contingencies [abstract]",
        "documentation": "Disclosure Of Other Commitments And Contingencies [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherEquityInstrumentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherEquityInstrumentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Equity Instruments [abstract]",
        "documentation": "Disclosure of other equity instrument."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherEquityInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherEquityInstrumentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstruments"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Equity Instruments Explanatory [text block]",
        "terseLabel": "Other equity instruments",
        "documentation": "The disclosure of other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherEquityInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherEquityInstrumentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstruments",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other equity instruments [line items]",
        "terseLabel": "Disclosure of other equity instruments [line items]",
        "documentation": "Line items of other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherEquityInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherEquityInstrumentsTable",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstruments",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other equity instruments [table]",
        "terseLabel": "Disclosure of other equity instruments [table]",
        "documentation": "Disclosure of other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherInvestmentIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherInvestmentIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Investment Income [Abstract]",
        "documentation": "Disclosure Of Other Investment Income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherInvestmentIncomeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherInvestmentIncomeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables",
      "http://www.aegon.com/role/OtherNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Investment Income Explanatory",
        "terseLabel": "Summary of other investment income explanatory",
        "documentation": "Disclosure of other investment income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherInvestmentIncomeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherInvestmentIncomeLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Investment Income [Line Items]",
        "documentation": "Disclosure Of Other Investment Income"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherInvestmentIncomeTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherInvestmentIncomeTable",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Investment Income [Table]",
        "documentation": "Disclosure Of Other Investment Income"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Liabilities [abstract]",
        "documentation": "Disclosure of other liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other liabilities [text block]",
        "verboseLabel": "Other liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other liabilities. [Refer: Other liabilities]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfOtherLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Liabilities [line items]",
        "terseLabel": "Disclosure of other liabilities [Line Items]",
        "documentation": "Disclosure of other liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Liabilities [table]",
        "terseLabel": "Disclosure Of Other Liabilities [table]",
        "documentation": "Disclosure of other liabilities table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherNetInvestmentResultExplantoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherNetInvestmentResultExplantoryTextBlock",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResult"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Net Investment Result Explantory [Text Block]",
        "terseLabel": "Other net investment result",
        "documentation": "Disclosure of other net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherNoncurrentAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssets"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other non-current assets [text block]",
        "terseLabel": "Non-current\u00a0assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other non-current assets. [Refer: Other non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "ifrs-full_DisclosureOfOtherNoncurrentLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherNoncurrentLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherNonCurrentLiabilities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other non-current liabilities [text block]",
        "terseLabel": "Other non-current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other non-current liabilities. [Refer: Other non-current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfOtherOperatingExpenseAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherOperatingExpenseAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Operating Expense [Abstract]",
        "documentation": "Disclosure of other operating expense abstract."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherOperatingExpenseExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpenses"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other operating expense [text block]",
        "terseLabel": "Other operating expenses"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfOtherOperatingExpenseLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherOperatingExpenseLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Operating Expense [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherOperatingExpenseTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherOperatingExpenseTable",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Operating Expense [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherOperatingIncomeAndOtherChargesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeCharges"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Operating Income And Other Charges Explanatory",
        "terseLabel": "Other income / (charges)",
        "documentation": "Disclosure of other operating income and other charges explanatory text block."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherProvisionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherProvisionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [text block]",
        "terseLabel": "Summary of Provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r86",
      "r503"
     ]
    },
    "ifrs-full_DisclosureOfOtherProvisionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [line items]",
        "terseLabel": "Disclosure of other provisions [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfOtherProvisionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfOtherProvisionsTable",
     "presentation": [
      "http://www.aegon.com/role/Provisions",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other provisions [table]",
        "terseLabel": "Disclosure of other provisions [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to other provisions."
       }
      }
     },
     "auth_ref": [
      "r86",
      "r503"
     ]
    },
    "aeg_DisclosureOfOtherReservesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherReservesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of other reserves [text block]",
        "terseLabel": "Summary of Other Reserves",
        "documentation": "The entire disclosure of other reserves."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherSelectedIncomeStatementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherSelectedIncomeStatementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Selected Income Statement [abstract]",
        "documentation": "Disclosure of other selected income statement ."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherSelectedIncomeStatementItemsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherSelectedIncomeStatementItemsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Selected Income Statement Items [text block]",
        "terseLabel": "Summary of Other Selected Income Statement Items",
        "documentation": "The disclosure of other selected income statement items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherSelectedIncomeStatementLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherSelectedIncomeStatementLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Selected Income Statement [line items]",
        "terseLabel": "Disclosure of other selected income statement [line items]",
        "documentation": "Disclosure of other selected income statement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOtherSelectedIncomeStatementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOtherSelectedIncomeStatementTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Other Selected Income Statement [table]",
        "terseLabel": "Disclosure Of Other Selected Income Statement [table]",
        "documentation": "Disclosure of other selected income statement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfOverviewOfFinancialInformationOfJointVenturesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfOverviewOfFinancialInformationOfJointVenturesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of overview of financial information of joint ventures [text block]",
        "terseLabel": "Summary of Overview of Summarized Financial Information to Carrying Amount of Joint Ventures And Results of the JVs Based on the Group's Relative Holding",
        "documentation": "Disclosure of overview of financial information of joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfPremiumsNetOfReinsuranceExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfPremiumsNetOfReinsuranceExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Reinsurance"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Premiums Net Of Reinsurance Explanatory",
        "terseLabel": "Reinsurance",
        "documentation": "Disclosure of premiums net of reinsurance."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfProposalProfitAppropriationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfProposalProfitAppropriationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Proposal Profit Appropriation [abstract]",
        "documentation": "Disclosure of proposal profit appropriation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfProposalProfitAppropriationExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfProposalProfitAppropriationExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Proposal Profit Appropriation [text block]",
        "terseLabel": "Proposal for profit appropriation",
        "documentation": "The entire disclosure of proposal profit appropriation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfProposalProfitAppropriationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfProposalProfitAppropriationLineItems",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriation",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Proposal Profit Appropriation [line items]",
        "terseLabel": "Disclosure of proposal profit appropriation [Line Items]",
        "documentation": "Disclosure of proposal profit appropriation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfProposalProfitAppropriationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfProposalProfitAppropriationTable",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriation",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Proposal Profit Appropriation [table]",
        "terseLabel": "Disclosure Of Proposal Profit Appropriation [table]",
        "documentation": "Disclosure of proposal profit appropriation."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfProvisionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfProvisionsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Provisions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of provisions [text block]",
        "terseLabel": "Provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of provisions. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfProvisionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfProvisionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/Provisions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Provisions [Line Items]",
        "documentation": "Disclosure of provisions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfPurchaseAndSaleTransactionsOfInvestmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfPurchaseAndSaleTransactionsOfInvestmentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Purchase And Sale Transactions Of Investments [abstract]",
        "documentation": "Disclosure of purchase and sale transactions of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfPurchaseAndSaleTransactionsOfInvestmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfPurchaseAndSaleTransactionsOfInvestmentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Purchase And Sale Transactions Of Investments [line items]",
        "terseLabel": "Disclosure of purchase and sale transactions of investments [line items]",
        "documentation": "Disclosure Of Purchase And Sale Transactions Of Investments [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfPurchaseAndSaleTransactionsOfInvestmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfPurchaseAndSaleTransactionsOfInvestmentsTable",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Purchase And Sale Transactions Of Investments [table]",
        "terseLabel": "Disclosure Of Purchase And Sale Transactions Of Investments [table]",
        "documentation": "Disclosure Of Purchase And Sale Transactions Of Investments [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfQuantitativeInformationAboutFinancialInstrumentsAndInsuranceAndReinsuranceContractsExposureToCurrencyRiskLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfQuantitativeInformationAboutFinancialInstrumentsAndInsuranceAndReinsuranceContractsExposureToCurrencyRiskLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Quantitative Information About Financial Instruments And Insurance And Reinsurance Contracts Exposure To Currency Risk [Line Items]",
        "terseLabel": "Disclosure of quantitative information about financial instruments and insurance and reinsurance contracts exposure to currency risk [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfQuantitativeInformationAboutFinancialInstrumentsAndInsuranceAndReinsuranceContractsExposureToCurrencyRiskTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfQuantitativeInformationAboutFinancialInstrumentsAndInsuranceAndReinsuranceContractsExposureToCurrencyRiskTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Quantitative Information About Financial Instruments And Insurance And Reinsurance Contracts Exposure To Currency Risk [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfQuantitativeInformationAboutFinancialInstrumentsExposureToCurrencyRiskAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfQuantitativeInformationAboutFinancialInstrumentsExposureToCurrencyRiskAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Quantitative Information about Financial Instruments Exposure to Currency Risk [Abstract]",
        "documentation": "Disclosure of quantitative information about financial instruments exposure to currency risk."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfQuantitativeInformationAboutFinancialInstrumentsExposureToCurrencyRiskExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfQuantitativeInformationAboutFinancialInstrumentsExposureToCurrencyRiskExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Quantitative Information About Financial Instruments Exposure To Currency Risk Explanatory",
        "terseLabel": "Summary of Quantitative Information about Financial Exposure to Currency Risk",
        "documentation": "Disclosure of quantitative information about financial instruments exposure to currency risk."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of quantitative information about right-of-use assets [text block]",
        "terseLabel": "Summary of information about right of use assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of quantitative information about right-of-use assets. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r196",
      "r422"
     ]
    },
    "ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of quantitative information about right-of-use assets [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of quantitative information about right-of-use assets [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to right-of-use assets."
       }
      }
     },
     "auth_ref": [
      "r196",
      "r422"
     ]
    },
    "aeg_DisclosureOfReceivablesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReceivablesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of receivables [abstract]",
        "documentation": "Disclosure of receivables [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReceivablesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReceivablesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/Receivables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Receivables [text block]",
        "terseLabel": "Receivables",
        "documentation": "The entire disclosure of receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReceivablesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReceivablesLineItems",
     "presentation": [
      "http://www.aegon.com/role/Receivables",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Receivables [line items]",
        "terseLabel": "Disclosure of receivables [Line Items]",
        "documentation": "Disclosure Of Receivables [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReceivablesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReceivablesTable",
     "presentation": [
      "http://www.aegon.com/role/Receivables",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Receivables [table]",
        "terseLabel": "Disclosure Of Receivables [table]",
        "documentation": "Disclosure of receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationBetweenStandardAndEffectiveIncomeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationBetweenStandardAndEffectiveIncomeTaxExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation Between Standard and Effective Income Tax Explanatory",
        "terseLabel": "Summary of Reconciliation Between Standard and Effective Income Tax",
        "documentation": "Disclosure Of reconciliation between standard and effective income tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationBetweenTheIncomeStatementsNetImpairmentChargeAndTheFluctuationsInTheLossAllowanceThatHaveAnEffectOnItExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationBetweenTheIncomeStatementsNetImpairmentChargeAndTheFluctuationsInTheLossAllowanceThatHaveAnEffectOnItExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation Between The Income Statements Net Impairment Charge And The Fluctuations In The Loss Allowance That Have An Effect On It Explanatory",
        "terseLabel": "Summary of Reconciliation of the Loss Allowance Movements with an Impact on the Income Statement with the Net Impairment Charge",
        "documentation": "Disclosure of reconciliation between the income statements net impairment charge and the fluctuations in the loss allowance that have an effect on it."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation From Operating Result Before Tax To Income Before Tax Explanatory",
        "terseLabel": "Summary of Reconciliation from Operating Result Before Tax to Income Before Tax",
        "documentation": "Disclosure of reconciliation from operating result before tax to income before tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation From Operating Result Before Tax To Income Before Tax [Line Items]",
        "terseLabel": "Disclosure of reconciliation from operating result before tax to income before tax [Line Items]",
        "documentation": "Disclosure of reconciliation from operating result before tax to income before tax ."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation From Operating Result Before Tax To Income Before Tax [Table]",
        "terseLabel": "Disclosure Of Reconciliation From Operating Result Before Tax To Income Before Tax [Table]",
        "documentation": "Disclosure of reconciliation from operating result before tax to income before tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationFromUnderlyingEarningsBeforeTaxToIncomeBeforeTaxAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationFromUnderlyingEarningsBeforeTaxToIncomeBeforeTaxAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation From Underlying Earnings Before Tax To Income Before Tax [abstract]",
        "documentation": "Disclosure of reconciliation from underlying earnings before tax to income before tax abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationOfChangesInAllowanceForCreditLossesOnReceivablesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationOfChangesInAllowanceForCreditLossesOnReceivablesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation Of Changes In Allowance For Credit Losses On Receivables [Line Items]",
        "terseLabel": "Disclosure of reconciliation of changes in allowance for credit losses on receivables [line items]",
        "documentation": "Disclosure of reconciliation of changes in allowance for credit losses on receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReconciliationOfChangesInAllowanceForCreditLossesOnReceivablesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationOfChangesInAllowanceForCreditLossesOnReceivablesTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation Of Changes In Allowance For Credit Losses On Receivables [Table]",
        "terseLabel": "Disclosure of reconciliation of changes in allowance for credit losses on receivables [table]",
        "documentation": "Disclosure of reconciliation of changes in allowance for credit losses on receivables."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByComponentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInInsuranceContractsByComponentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in insurance contracts by components [text block]",
        "terseLabel": "Summary of Movement Schedules by Measurement Component"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of changes in insurance contracts by components, ie the estimates of the present value of the future cash flows, the risk adjustment for non-financial risk and the contractual service margin. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r205"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByComponentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInInsuranceContractsByComponentsTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in insurance contracts by components [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of changes in insurance contracts by components."
       }
      }
     },
     "auth_ref": [
      "r205"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [text block]",
        "terseLabel": "Summary of Insurance Contracts and Reinsurance Contracts by Type"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of changes in insurance contracts by remaining coverage and incurred claims. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r202"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInInsuranceContractsByRemainingCoverageAndIncurredClaimsTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of changes in insurance contracts by remaining coverage and incurred claims."
       }
      }
     },
     "auth_ref": [
      "r202"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in intangible assets and goodwill [text block]",
        "terseLabel": "Summary of Intangible Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of changes in intangible assets and goodwill. [Refer: Intangible assets and goodwill]"
       }
      }
     },
     "auth_ref": [
      "r926"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in intangible assets and goodwill [line items]",
        "terseLabel": "Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in intangible assets and goodwill [table]",
        "terseLabel": "Disclosure of reconciliation of changes in intangible assets and goodwill [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of changes in intangible assets and goodwill."
       }
      }
     },
     "auth_ref": [
      "r926"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [abstract]",
        "terseLabel": "Disclosure of reconciliation of changes in allowance for credit losses on receivables [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [text block]",
        "terseLabel": "Summary of Changes in the Gross Carrying Amount / Market Value of the Financial Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of changes in the loss allowance and explanation of changes in the gross carrying amount for financial instruments. Loss allowance is the allowance for expected credit losses on financial assets measured in accordance with paragraph 4.1.2 of IFRS 9, lease receivables and contract assets, the accumulated impairment amount for financial assets measured in accordance with paragraph 4.1.2A of IFRS 9 and the provision for expected credit losses on loan commitments and financial guarantee contracts. [Refer: Gross carrying amount [member]]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r331",
      "r566",
      "r568"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of changes in the loss allowance and explanation of changes in the gross carrying amount for financial instruments."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r331",
      "r566",
      "r568"
     ]
    },
    "aeg_DisclosureOfReconciliationOfChangesInLossAllowanceExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationOfChangesInLossAllowanceExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Reconciliation of Changes in Loss Allowance Explanatory",
        "terseLabel": "Summary of Reconciliation of Changes in Loss Allowance",
        "documentation": "Disclosure of reconciliation of changes in loss allowance."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [text block]",
        "terseLabel": "Summary of Reconciliation of Liabilities Arising from Financing Activities"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the reconciliation of liabilities arising from financing activities. [Refer: Liabilities arising from financing activities]"
       }
      }
     },
     "auth_ref": [
      "r444",
      "r702"
     ]
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [line items]",
        "terseLabel": "Disclosure of reconciliation of liabilities arising from financing activities [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of reconciliation of liabilities arising from financing activities [table]",
        "terseLabel": "Disclosure of reconciliation of liabilities arising from financing activities [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the reconciliation of liabilities arising from financing activities."
       }
      }
     },
     "auth_ref": [
      "r444",
      "r702"
     ]
    },
    "aeg_DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReconciliationOfOtherNetInvestmentResultExplantory",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Reconciliation Of Other Net Investment Result Explantory",
        "terseLabel": "Summary of other net investment result",
        "documentation": "Disclosure of reconciliation of Other net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReinsuranceTransactionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReinsuranceTransactionsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Reinsurance Transactions [abstract]",
        "documentation": "Disclosure of reinsurance transactions [abstract]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReinsuranceTransactionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReinsuranceTransactionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Reinsurance Transactions [line items]",
        "documentation": "Disclosure of reinsurance transactions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfReinsuranceTransactionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfReinsuranceTransactionsTable",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Reinsurance Transactions [table]",
        "terseLabel": "Disclosure of Reinsurance Transactions [table]",
        "documentation": "Disclosure of reinsurance transactions [table]."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfRelatedPartyExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfRelatedPartyExplanatory",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of related party [text block]",
        "terseLabel": "Related party transactions"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for related parties."
       }
      }
     },
     "auth_ref": [
      "r42"
     ]
    },
    "aeg_DisclosureOfRemeasurementOfDefinedBenefitPlansExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfRemeasurementOfDefinedBenefitPlansExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Remeasurement Of Defined Benefit Plans [table text block]",
        "terseLabel": "Summary of Remeasurement of Defined Benefit Plans",
        "documentation": "Disclosure of remeasurement of defined benefit plans explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfRemunerationExpensesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfRemunerationExpensesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Remuneration Expenses [Abstract]",
        "documentation": "Disclosure of Remuneration Expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfRemunerationExpensesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfRemunerationExpensesLineItems",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Remuneration Expenses [Line Items]",
        "documentation": "Disclosure of Remuneration Expenses"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfRemunerationExpensesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfRemunerationExpensesTable",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Remuneration Expenses [Table]",
        "documentation": "Disclosure of Remuneration Expenses"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of repurchase and reverse repurchase agreements [text block]",
        "terseLabel": "Summary of Reverse Repurchase Agreements"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of repurchase and reverse repurchase agreements."
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfRevaluationReserveLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfRevaluationReserveLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Revaluation Reserve [line items]",
        "terseLabel": "Disclosure of revaluation reserve [Line Items]",
        "documentation": "Disclosure Of Revaluation Reserve [line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfRevaluationReserveTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfRevaluationReserveTable",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Revaluation Reserve [table]",
        "terseLabel": "Disclosure Of Revaluation Reserve [table]",
        "documentation": "Disclosure Of Revaluation Reserve [table]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfScheduleOfShareholdersEquityExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfScheduleOfShareholdersEquityExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Schedule Of Shareholders Equity [text block]",
        "terseLabel": "Summary of Shareholders' Equity",
        "documentation": "Disclosure Of Schedule Of Shareholders Equity [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsAbstract",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [abstract]",
        "terseLabel": "Financial actuarial assumptions"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [text block]",
        "terseLabel": "Summary of Actuarial Assumptions used to Determine Defined Benefit Obligations"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of a sensitivity analysis for significant actuarial assumptions used to determine the present value of a defined benefit obligation. [Refer: Actuarial assumptions [domain]; Defined benefit obligation, at present value]"
       }
      }
     },
     "auth_ref": [
      "r32"
     ]
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [line items]",
        "terseLabel": "Disclosure of sensitivity analysis for actuarial assumptions [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis for actuarial assumptions [table]",
        "terseLabel": "Disclosure of sensitivity analysis for actuarial assumptions [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the sensitivity analysis for actuarial assumptions."
       }
      }
     },
     "auth_ref": [
      "r32"
     ]
    },
    "aeg_DisclosureOfSensitivityAnalysisRelatedToTranslationRiskLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSensitivityAnalysisRelatedToTranslationRiskLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Sensitivity Analysis Related to Translation Risk [line items]",
        "terseLabel": "Disclosure of sensitivity analysis related to translation risk [line items]",
        "documentation": "Disclosure of Sensitivity Analysis Related to Translation Risk."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Abstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Abstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis to changes in risk variables that arise from contracts within scope of IFRS 17 [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Explanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Explanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis to changes in risk variables that arise from contracts within scope of IFRS 17 [text block]",
        "terseLabel": "Summary of Net Income and Shareholders' Equity to Changes in Various Underwriting Risks"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the sensitivity analysis to changes in risk variables that arise from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r254"
     ]
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17LineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis to changes in risk variables that arise from contracts within scope of IFRS 17 [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Table": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSensitivityAnalysisToChangesInRiskExposuresThatAriseFromContractsWithinScopeOfIFRS17Table",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of sensitivity analysis to changes in risk variables that arise from contracts within scope of IFRS 17 [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the sensitivity analysis to changes in risk variables that arise from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r254"
     ]
    },
    "aeg_DisclosureOfShareCapitalExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfShareCapitalExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of share capital [text block]",
        "terseLabel": "Summary of Share Capital - Par Value",
        "documentation": "The disclosure of share capital."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquity"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of share capital, reserves and other equity interest [text block]",
        "terseLabel": "Shareholders' equity"
       }
      },
      "en": {
       "role": {
        "documentation": "The entire disclosure for share capital, reserves and other equity interest."
       }
      }
     },
     "auth_ref": [
      "r442",
      "r592",
      "r653"
     ]
    },
    "aeg_DisclosureOfShareCapitalTransactionsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfShareCapitalTransactionsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareCapital"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Share Capital Transactions [text block]",
        "terseLabel": "Share capital",
        "documentation": "Disclosure of share capital transactions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSharePremiumAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSharePremiumAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of share premium [abstract]",
        "documentation": "Disclosure of share premium."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSharePremiumExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSharePremiumExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of share premium [text block]",
        "terseLabel": "Summary of Share Premium",
        "documentation": "Disclosure of share premium [text block]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSharePremiumLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSharePremiumLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Share Premium [line items]",
        "terseLabel": "Disclosure of share premium [Line Items]",
        "documentation": "Disclosure Of Share Premium [line items]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSharePremiumTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSharePremiumTable",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Share Premium [table]",
        "terseLabel": "Disclosure Of Share Premium [table]",
        "documentation": "Disclosure Of Share Premium [table]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfShareholdersEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfShareholdersEquityAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of shareholders equity [abstract]",
        "documentation": "Disclosure of shareholders equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfShareholdersEquityLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfShareholdersEquityLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquity",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of shareholders equity [line items]",
        "terseLabel": "Disclosure of shareholders equity [line items]",
        "documentation": "Disclosure of shareholders equity line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfShareholdersEquityTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfShareholdersEquityTable",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquity",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Shareholders Equity [table]",
        "terseLabel": "Disclosure of Shareholders Equity [table]",
        "documentation": "Disclosure of shareholders equity table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInAssociatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of associates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInAssociatesLineItems",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of associates [line items]",
        "terseLabel": "Disclosure of associates [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInAssociatesTable",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of associates [table]",
        "terseLabel": "Disclosure of associates [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to associates."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r172",
      "r576"
     ]
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInSubsidiariesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subsidiaries [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/GroupCompanies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subsidiaries [text block]",
        "terseLabel": "Group companies"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of subsidiaries. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r170",
      "r574"
     ]
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInSubsidiariesLineItems",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subsidiaries [line items]",
        "terseLabel": "Disclosure of subsidiaries [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSignificantInvestmentsInSubsidiariesTable",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subsidiaries [table]",
        "terseLabel": "Disclosure of subsidiaries [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to subsidiaries."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r170",
      "r574"
     ]
    },
    "aeg_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [abstract]",
        "documentation": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesExplanaotry": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesExplanaotry",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [text block]",
        "terseLabel": "Information about Significant Unobservable Inputs",
        "documentation": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [line items]",
        "terseLabel": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [line items]",
        "documentation": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsAndLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [table]",
        "terseLabel": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities [table]",
        "documentation": "Disclosure of significant unobservable inputs used in fair value measurement of assets and liabilities table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSubordinatedLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSubordinatedLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Subordinated Liabilities [abstract]",
        "documentation": "Disclosure of subordinated liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfSubordinatedLiabilitiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfSubordinatedLiabilitiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowings"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of subordinated liabilities [text block]",
        "terseLabel": "Subordinated borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of subordinated liabilities. [Refer: Subordinated liabilities]"
       }
      }
     },
     "auth_ref": [
      "r945"
     ]
    },
    "aeg_DisclosureOfSubordinatedLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSubordinatedLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowings",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Subordinated Liabilities [line items]",
        "terseLabel": "Disclosure of subordinated liabilities [Line Items]",
        "documentation": "Disclosure of subordinated liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSubordinatedLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSubordinatedLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowings",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Subordinated Liabilities [table]",
        "terseLabel": "Disclosure of Subordinated Liabilities [table]",
        "documentation": "Disclosure of subordinated liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Assets And Liabilities Per Segment [abstract]",
        "documentation": "Disclosure of summarized assets and liabilities per segment abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Assets And Liabilities Per Segment [text block]",
        "terseLabel": "Summary of Assets and Liabilities Per Segment",
        "documentation": "The disclosure of summarized assets and liabilities per segment ."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Assets And Liabilities Per Segment [line items]",
        "terseLabel": "Disclosure Of Summarized Assets And Liabilities Per Segment [line items]",
        "documentation": "Disclosure of summarized assets and liabilities per segment line items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedAssetsAndLiabilitiesPerSegmentTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Assets And Liabilities Per Segment [table]",
        "terseLabel": "Disclosure Of Summarized Assets And Liabilities Per Segment [table]",
        "documentation": "Disclosure of summarized assets and liabilities per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedInvestmentPerSegmentAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedInvestmentPerSegmentAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Investment Per Segment [abstract]",
        "documentation": "Disclosure of summarized investment per segment abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedInvestmentPerSegmentExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedInvestmentPerSegmentExplanatory",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Investment Per Segment [text block]",
        "terseLabel": "Summary of Investments",
        "documentation": "The disclosure of summarized investment per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedInvestmentPerSegmentLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedInvestmentPerSegmentLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Investment Per Segment [line items]",
        "terseLabel": "Disclosure of summarized investment per segment [line items]",
        "documentation": "Disclosure of summarized investment per segment line item."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummarizedInvestmentPerSegmentTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummarizedInvestmentPerSegmentTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summarized Investment Per Segment [table]",
        "terseLabel": "Disclosure Of Summarized Investment Per Segment [table]",
        "documentation": "Disclosure of summarized investment per segment ."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummaryCashFlowsStatementExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummaryCashFlowsStatementExplanatoryTextBlock",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summary Cash Flows Statement Explanatory [Text Block]",
        "verboseLabel": "Summary of Summary Cash Flow Statement",
        "documentation": "Disclosure of summary cash flows statement explanatory."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummaryOfCommissionsAndExpensesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummaryOfCommissionsAndExpensesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncomeTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summary Of Commissions And Expenses [text block]",
        "terseLabel": "Summary of Fees and Commission Income",
        "documentation": "Disclosure of summary of commissions and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummaryOfMaterialAccountingPolicyInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummaryOfMaterialAccountingPolicyInformationLineItems",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summary Of Material Accounting Policy Information [Line Items]",
        "documentation": "Disclosure Of Summary Of Material Accounting Policy Information."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummaryOfMaterialAccountingPolicyInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummaryOfMaterialAccountingPolicyInformationTable",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Summary of Material Accounting Policy Information [Table]",
        "documentation": "Disclosure of summary of material accounting policy information."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSummaryOfSensitivityAnalysisExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSummaryOfSensitivityAnalysisExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Summary Of Sensitivity Analysis Explanatory",
        "terseLabel": "Summary of Sensitivity Analysis of Contractual Service Margin, Net Income and Shareholders' Equity to Equity Markets",
        "documentation": "The disclosure of summary of sensitivity analysis."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSupplementaryInsuranceInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSupplementaryInsuranceInformationLineItems",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Supplementary Insurance Information [Line Items]",
        "terseLabel": "Disclosure of supplementary insurance information [line items]",
        "documentation": "Disclosure of supplementary insurance information."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfSupplementaryInsuranceInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfSupplementaryInsuranceInformationTable",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Supplementary Insurance Information [Table]",
        "terseLabel": "Disclosure of supplementary insurance information [table]",
        "documentation": "Disclosure of supplementary insurance information [table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of terms and conditions of share-based payment arrangement [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of terms and conditions of share-based payment arrangement [text block]",
        "terseLabel": "Summary of Cumulative Number of Shares and Their Status in Relation to Active Long Term Incentive Plans and Allocated Variable Compensation to Identified Staff"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the general terms and conditions of share-based payment arrangements. [Refer: Types of share-based payment arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r275",
      "r524"
     ]
    },
    "ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of terms and conditions of share-based payment arrangement [line items]",
        "terseLabel": "Disclosure of terms and conditions of share-based payment arrangement [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of terms and conditions of share-based payment arrangement [table]",
        "terseLabel": "Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to terms and conditions of share-based payment arrangements."
       }
      }
     },
     "auth_ref": [
      "r275",
      "r524"
     ]
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transactions between related parties [line items]",
        "terseLabel": "Disclosure of transactions between related parties [Line Items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfTransactionsBetweenRelatedPartiesTable",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transactions between related parties [table]",
        "terseLabel": "Disclosure of transactions between related parties [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to transactions between related parties."
       }
      }
     },
     "auth_ref": [
      "r41",
      "r486"
     ]
    },
    "aeg_DisclosureOfTransfersBetweenLevel1AndLeveI2ForFinancialAssetsAndLiabilitesRecordedAtFairValueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTransfersBetweenLevel1AndLeveI2ForFinancialAssetsAndLiabilitesRecordedAtFairValueAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transfers between level1 and leve i2 for financial assets and liabilites recorded at fair value [abstract]",
        "documentation": "Disclosure of transfers between level1 and leve i2 for financial assets and liabilites recorded at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTransfersBetweenLevel1AndLeveI2ForFinancialAssetsAndLiabilitesRecordedAtFairValueTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTransfersBetweenLevel1AndLeveI2ForFinancialAssetsAndLiabilitesRecordedAtFairValueTable",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transfers between level1 and leve i2 for financial assets and liabilites recorded at fair value [table]",
        "terseLabel": "Disclosure of transfers between level1 and leve i2 for financial assets and liabilites recorded at fair value [table]",
        "documentation": "Disclosure of transfers between level1 and leve i2 for financial assets and liabilites recorded at fair value [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTransfersBetweenLevel1AndLevel2ForFinancialAssetsAndLiabilitiesRecordedAtFairValueExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTransfersBetweenLevel1AndLevel2ForFinancialAssetsAndLiabilitiesRecordedAtFairValueExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FairValueTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transfers between level 1 and level 2 for financial assets and liabilities recorded at fair value explanatory",
        "terseLabel": "Schedule of Transfers between Level 1 and Level II for Financial Assets and Liabilities Recorded at Fair Value on Recurring Basis",
        "documentation": "Disclosure of transfers between level 1 and level 2 for financial assets and liabilities recorded at fair value explanatory"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTransfersBetweenLevel1AndLevel2ForFinancialAssetsAndLiabilitiesRecordedAtFairValueLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTransfersBetweenLevel1AndLevel2ForFinancialAssetsAndLiabilitiesRecordedAtFairValueLineItems",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of transfers between level 1 and level 2 for financial assets and liabilities recorded at fair value [line items]",
        "terseLabel": "Disclosure of transfers between level 1 and level 2 for financial assets and liabilities recorded at fair value [line items]",
        "documentation": "Disclosure of transfers between level 1 and level 2 for financial assets and liabilities recorded at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTrustPassThroughSecuritiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTrustPassThroughSecuritiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of trust pass-through securities [abstract]",
        "documentation": "Disclosure of trust pass-through securities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTrustPassThroughSecuritiesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTrustPassThroughSecuritiesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecurities"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of trust pass- through securities [text block]",
        "terseLabel": "Trust pass-through securities",
        "documentation": "Disclosure of trust pass-through securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTrustPassThroughSecuritiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTrustPassThroughSecuritiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of trust pass-through securities [line items]",
        "terseLabel": "Disclosure of trust pass-through securities [line items]",
        "documentation": "Disclosure of trust pass-through securities [line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfTrustPassThroughSecuritiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfTrustPassThroughSecuritiesTable",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of trust pass-through securities [table]",
        "terseLabel": "Disclosure of trust pass-through securities [table]",
        "documentation": "Disclosure of trust pass-through securities [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Weighted Assumptions on Economic Variables Based on Scenario Type [Abstract]",
        "documentation": "Disclosure of weighted Assumptions on economic variables based on scenario type."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Weighted Assumptions on Economic Variables Based on Scenario Type Explanatory",
        "terseLabel": "Summary of Weighted Assigned to Each Economic Scenario",
        "documentation": "Disclosure of weighted Assumptions on economic variables based on scenario type."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Weighted Assumptions on Economic Variables Based on Scenario Type [Line Items]",
        "terseLabel": "Disclosure of weighted assumptions on economic variables based on scenario type [line items]",
        "documentation": "Disclosure of weighted Assumptions on economic variables based on scenario type."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAssumptionsOnEconomicVariablesBasedOnScenarioTypeTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of Weighted Assumptions on Economic Variables Based on Scenario Type [Table]",
        "documentation": "Disclosure of weighted Assumptions on economic variables based on scenario type."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAverageNumberOfTreasurySharesExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAverageNumberOfTreasurySharesExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Weighted Average Number Of Treasury Shares Explanatory [text block]",
        "terseLabel": "Summary of Weighted Average Number of Treasury Shares",
        "documentation": "The disclosure of weighted average number of treasury shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAverageNumberOfTreasurySharesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAverageNumberOfTreasurySharesLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Weighted Average Number Of Treasury Shares [Line Items]",
        "documentation": "Disclosure Of Weighted Average Number Of Treasury Shares"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclosureOfWeightedAverageNumberOfTreasurySharesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclosureOfWeightedAverageNumberOfTreasurySharesTable",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Weighted Average Number Of Treasury Shares [Table]",
        "terseLabel": "Disclosure Of Weighted Average Number Of Treasury Shares [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [text block]",
        "terseLabel": "Summary of Yield Curve Used to Discount Cash Flows that do not Vary Based on Returns on Underlying Items"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of the yield curve used to discount cash flows that do not vary based on the returns on underlying items, applying paragraph 36 of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r248"
     ]
    },
    "ifrs-full_DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisclosureOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsTable",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to the yield curve used to discount cash flows that do not vary based on the returns on underlying items."
       }
      }
     },
     "auth_ref": [
      "r248"
     ]
    },
    "aeg_DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsExplanatoryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsExplanatoryTextBlock",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts Explanatory [Text Block]",
        "verboseLabel": "Summary of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts",
        "documentation": "Disclsure of relationship between amounts payable on demand that arise from contracts with in scope of ifrs17 and carrying amount of related groups of contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclsure Of Relationship Between Amounts Payable On Demand That Arise From Contracts With In Scope Of IFRS17 And Carrying Amount Of Related Groups Of Contracts [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DiscontinuedOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DiscontinuedOperationsMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discontinued operations [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of an entity that either has been disposed of or is classified as held for sale, and that: (a) represents a separate major line of business or geographical area of operations; (b) is part of a single co-ordinated plan to dispose of a separate major line of business or geographical area of operations; or (c) is a subsidiary acquired exclusively with a view to resale. A component of an entity comprises operations and cash flows that can be clearly distinguished, operationally and for financial reporting purposes, from the rest of the entity. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r287"
     ]
    },
    "aeg_DiscontinuedOperationsThatMayBeReclassifiedNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DiscontinuedOperationsThatMayBeReclassifiedNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discontinued Operations That May Be Reclassified Net Of Tax",
        "terseLabel": "Discontinued operations that may be reclassified",
        "documentation": "Discontinued operations that may be reclassified net of tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DiscontinuedOperationsThatMayBeReclassifiedNetOfTaxReclassifiedFromReserveOfDiscontinuedOperationsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DiscontinuedOperationsThatMayBeReclassifiedNetOfTaxReclassifiedFromReserveOfDiscontinuedOperationsHeldForSale",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discontinued Operations That May Be Reclassified Net Of Tax Reclassified From Reserve Of Discontinued Operations Held For Sale",
        "terseLabel": "Discontinued operations reclassified from opening reserves",
        "documentation": "Discontinued operations that may be reclassified net of tax reclassified from reserve of discontinued operations held for sale."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DiscontinuedOperationsThatWillNotBeReclassifiedNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DiscontinuedOperationsThatWillNotBeReclassifiedNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discontinued Operations That Will Not Be Reclassified Net Of Tax",
        "terseLabel": "Discontinued operations that will not be reclassified",
        "documentation": "Discontinued operations that will not be reclassified net of tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DiscontinuedOperationsThatWillNotBeReclassifiedNetOfTaxReclassifiedFromReserveOfDiscontinuedOperationsHeldForSale": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DiscontinuedOperationsThatWillNotBeReclassifiedNetOfTaxReclassifiedFromReserveOfDiscontinuedOperationsHeldForSale",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discontinued Operations That Will Not Be Reclassified Net Of Tax Reclassified From Reserve Of Discontinued Operations Held For Sale",
        "terseLabel": "Discontinued operations not reclassified from opening reserves",
        "documentation": "Discontinued operations that will not be reclassified net of tax reclassified from reserve of discontinued operations held for sale."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DiscountRateAppliedToCashFlowProjectionsPreTaxBasis": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DiscountRateAppliedToCashFlowProjectionsPreTaxBasis",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discount rate applied to cash flow projections pre tax basis",
        "terseLabel": "Pre-tax adjusted discount rate",
        "documentation": "The pre tax discount rate applied to cash flow projections for a cash-generating unit (group of units)."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DiscountedCashFlowMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DiscountedCashFlowMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Discounted cash flow [member]",
        "terseLabel": "Discounted cash flow [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a specific valuation technique consistent with the income approach that involves analysing future cash flow amounts through the application of present value techniques and inputs (for example, weighted average cost of capital, long-term revenue growth rate, long-term pre-tax operating margin, discount for lack of marketability, control premium). [Refer: Income approach [member]; Weighted average [member]]"
       }
      }
     },
     "auth_ref": [
      "r710",
      "r713"
     ]
    },
    "aeg_DisposalOfABusiness": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfABusiness",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of A Business",
        "verboseLabel": "Disposal of a business",
        "negatedLabel": "Disposal of a business",
        "documentation": "Disposal of a business."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfABusinessFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfABusinessFairValueMeasurementAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of A Business Fair Value Measurement Assets",
        "terseLabel": "Disposal of a business",
        "documentation": "Disposal of a business fair value measurement assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfDerivativesClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfDerivativesClassifiedAsOperatingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": -1.0,
       "order": 24.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of Derivatives Classified As Operating Activities",
        "terseLabel": "Disposal of derivatives",
        "documentation": "Disposal of derivatives classified as operating activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfGroupAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfGroupAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal of group assets",
        "terseLabel": "Disposal of group assets",
        "documentation": "Disposal of group assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfInvestmentsInAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfInvestmentsInAssociates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of Investments In Associates",
        "terseLabel": "Disposals",
        "documentation": "Disposal of investments in associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfInvestmentsInAssociatesJointVenturesAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfInvestmentsInAssociatesJointVenturesAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of Investments In Associates Joint Ventures Amount",
        "documentation": "Disposal of investments in associates joint ventures amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfInvestmentsOtherThanMoneyMarketInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfInvestmentsOtherThanMoneyMarketInvestments",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": -1.0,
       "order": 23.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of Investments Other Than Money Market Investments",
        "terseLabel": "Disposal of investments (other than money market investments)",
        "documentation": "Disposal of investments other than money market investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfOtherReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfOtherReserves",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of Other Reserves",
        "terseLabel": "Disposal",
        "documentation": "Disposal of other reserves."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DisposalOfRightOfUseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DisposalOfRightOfUseAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposal Of Right Of Use Assets",
        "negatedLabel": "Disposals",
        "documentation": "Disposal of right of use assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DisposalsInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DisposalsInvestmentProperty",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disposals, investment property",
        "negatedLabel": "Disposals"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in investment property resulting from disposals. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r100",
      "r107",
      "r510",
      "r515"
     ]
    },
    "aeg_DividendAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendDistributedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendDistributedMember",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend Distributed [member]",
        "terseLabel": "Dividend Distributed [member]",
        "documentation": "Dividend distributed."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendIncomeFromOtherInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendIncomeFromOtherInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend Income From Other Investment [Member]",
        "terseLabel": "Dividend income [Member]",
        "documentation": "Dividend income from other investment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendPerCommonShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendPerCommonShare",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend Per Common Share",
        "verboseLabel": "Dividend per common share",
        "documentation": "Dividend per common share."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendReceived",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend Received",
        "terseLabel": "Dividend received",
        "documentation": "Dividend received."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendReceivedAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendReceivedAssociates",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend Received Associates",
        "terseLabel": "Dividend",
        "documentation": "Dividend received associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendReceivedJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendReceivedJointVentures",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend Received Joint Ventures",
        "terseLabel": "Dividend",
        "documentation": "Dividend received joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DividendWithholdingTaxReduction": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendWithholdingTaxReduction",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividend withholding tax reduction",
        "negatedLabel": "Dividend withholding tax reduction",
        "documentation": "Dividend withholding tax reduction."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DividendsPaid": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsPaid",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends recognised as distributions to owners",
        "negatedLabel": "Dividends paid on common shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends recognised as distributions to owners."
       }
      }
     },
     "auth_ref": [
      "r435",
      "r593",
      "r614"
     ]
    },
    "ifrs-full_DividendsPaidClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsPaidClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 47.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends paid, classified as financing activities",
        "negatedLabel": "Dividends paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for dividends paid by the entity, classified as financing activities."
       }
      }
     },
     "auth_ref": [
      "r120"
     ]
    },
    "ifrs-full_DividendsPaidOrdinarySharesPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsPaidOrdinarySharesPerShare",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends paid, ordinary shares per share",
        "terseLabel": "Interim dividend per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends paid per ordinary share."
       }
      }
     },
     "auth_ref": [
      "r69",
      "r491"
     ]
    },
    "aeg_DividendsProposedAsDistributionsToOwnersPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DividendsProposedAsDistributionsToOwnersPerShare",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends Proposed as Distributions to Owners Per Share",
        "terseLabel": "Dividends proposed as distributions to owners per share",
        "documentation": "The amount, per share, of dividends proposed as distributions to owners."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share",
        "verboseLabel": "Aggregate dividend interim and final per share"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners."
       }
      }
     },
     "auth_ref": [
      "r443",
      "r595",
      "r618"
     ]
    },
    "ifrs-full_DividendsReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsReceived",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends received",
        "positiveTerseLabel": "Dividends received",
        "terseLabel": "Dividends received",
        "positiveLabel": "Dividends"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of dividends received."
       }
      }
     },
     "auth_ref": [
      "r152"
     ]
    },
    "ifrs-full_DividendsReceivedClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsReceivedClassifiedAsOperatingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends received, classified as operating activities",
        "terseLabel": "Dividends received"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from dividends received, classified as operating activities. [Refer: Dividends received]"
       }
      }
     },
     "auth_ref": [
      "r120"
     ]
    },
    "ifrs-full_DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends received from investments accounted for using equity method, classified as investing activities",
        "terseLabel": "Dividend received from joint ventures and associates"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow representing dividends received from investments that are accounted for using the equity method, classified as investing activities. [Refer: Investments accounted for using equity method; Dividends received]"
       }
      }
     },
     "auth_ref": [
      "r930"
     ]
    },
    "aeg_Dividendscapitalrepaymentsandcapitalinjectionsofsubsidiariesassociatesandjointventures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Dividendscapitalrepaymentsandcapitalinjectionsofsubsidiariesassociatesandjointventures",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends capital repayments and capital injections of subsidiaries associates and joint ventures",
        "terseLabel": "Dividends, capital repayments and capital injections of subsidiaries, associates and joint ventures",
        "documentation": "Dividends capital repayments and capital injections of subsidiaries associates and joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentAccountingStandard": {
     "xbrltype": "accountingStandardItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentAccountingStandard",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Accounting Standard",
        "documentation": "The basis of accounting the registrant has used to prepare the financial statements included in this filing This can either be 'U.S. GAAP', 'International Financial Reporting Standards', or 'Other'."
       }
      }
     },
     "auth_ref": [
      "r795"
     ]
    },
    "dei_DocumentAnnualReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentAnnualReport",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Annual Report",
        "documentation": "Boolean flag that is true only for a form used as an annual report."
       }
      }
     },
     "auth_ref": [
      "r794",
      "r795",
      "r818"
     ]
    },
    "dei_DocumentFinStmtErrorCorrectionFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFinStmtErrorCorrectionFlag",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Financial Statement Error Correction [Flag]",
        "documentation": "Indicates whether any of the financial statement period in the filing include a restatement due to error correction."
       }
      }
     },
     "auth_ref": [
      "r794",
      "r795",
      "r818",
      "r861"
     ]
    },
    "dei_DocumentFiscalPeriodFocus": {
     "xbrltype": "fiscalPeriodItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFiscalPeriodFocus",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Fiscal Period Focus",
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentFiscalYearFocus": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentFiscalYearFocus",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Fiscal Year Focus",
        "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentInformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentInformationLineItems",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Information [Line Items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentInformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentInformationTable",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Information [Table]",
        "documentation": "Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentPeriodEndDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentPeriodEndDate",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Period End Date",
        "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentRegistrationStatement": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentRegistrationStatement",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Registration Statement",
        "documentation": "Boolean flag that is true only for a form used as a registration statement."
       }
      }
     },
     "auth_ref": [
      "r790"
     ]
    },
    "dei_DocumentShellCompanyReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentShellCompanyReport",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Shell Company Report",
        "documentation": "Boolean flag that is true for a Shell Company Report pursuant to section 13 or 15(d) of the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r795"
     ]
    },
    "dei_DocumentTransitionReport": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentTransitionReport",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Transition Report",
        "documentation": "Boolean flag that is true only for a form used as a transition report."
       }
      }
     },
     "auth_ref": [
      "r839"
     ]
    },
    "dei_DocumentType": {
     "xbrltype": "submissionTypeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "DocumentType",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Type",
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DomesticGdpIndexPrice": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DomesticGdpIndexPrice",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Domestic GDP Index Price",
        "terseLabel": "Domestic GDP",
        "documentation": "Domestic GDP index price."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DonaDYoungMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DonaDYoungMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dona D Young [member]",
        "terseLabel": "Dona D Young [member]",
        "documentation": "Dona D Young."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DownsideScenarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DownsideScenarioMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Downside Scenario [member]",
        "terseLabel": "Downside [member]",
        "documentation": "Downside scenario."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_DutchGovernmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "DutchGovernmentMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dutch Government [member]",
        "terseLabel": "Dutch government [member]",
        "documentation": "Dutch government."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]",
        "terseLabel": "Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year"
       }
      }
     },
     "auth_ref": [
      "r850"
     ]
    },
    "aeg_ECLOnFinancialAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ECLOnFinancialAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "ECL On Financial Assets [Member]",
        "terseLabel": "ECL on financial assets [member]",
        "documentation": "ECL on financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "currency_EUR": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2025",
     "localname": "EUR",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Euro Member Countries, Euro",
        "terseLabel": "EUR [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EarningsPerCommonShareBAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EarningsPerCommonShareBAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Common Share B [Abstract]",
        "terseLabel": "Earnings per share (EUR per share)\u00a0from continuing and discontinued operations",
        "documentation": "Earnings per common share B."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EarningsPerShareAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings per share [abstract]",
        "terseLabel": "Earnings per share (EUR per share)\u00a0from continuing and discontinued operations"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EarningsPerShareExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareExplanatory",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings per share [text block]",
        "terseLabel": "Summary of Basic Earnings Per Share"
       }
      },
      "en": {
       "role": {
        "documentation": "The disclosure of earnings per share."
       }
      }
     },
     "auth_ref": [
      "r64"
     ]
    },
    "ifrs-full_EarningsPerShareLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareLineItems",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings per share [line items]",
        "terseLabel": "Earnings per share [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EarningsPerShareTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EarningsPerShareTable",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings per share [table]",
        "terseLabel": "Earnings Per Share [Table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to earnings per share."
       }
      }
     },
     "auth_ref": [
      "r64"
     ]
    },
    "aeg_EconomicVariableAssumptionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EconomicVariableAssumptionsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Economic Variable Assumptions [Abstract]",
        "documentation": "Economic variable assumptions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EconomicVariableAssumptionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EconomicVariableAssumptionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Economic Variable Assumptions [Line Items]",
        "terseLabel": "Economic variable assumptions [line items]",
        "documentation": "Economic variable assumptions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EconomicVariableAssumptionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EconomicVariableAssumptionsTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Economic Variable Assumptions [Table]",
        "documentation": "Economic variable assumptions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r245"
     ]
    },
    "aeg_EffectOfChangesInForeignExchangeRatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EffectOfChangesInForeignExchangeRatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect Of Changes In Foreign Exchange Rates [abstract]",
        "documentation": "Effect Of Changes In Foreign Exchange Rates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EffectOfChangesInInterestRatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EffectOfChangesInInterestRatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect Of Changes In Interest Rates [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EffectOfChangesInInterestRatesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EffectOfChangesInInterestRatesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect Of Changes In Interest Rates [Line Items]",
        "terseLabel": "Effect of changes in interest rates [Line items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EffectOfChangesInInterestRatesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EffectOfChangesInInterestRatesTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect Of Changes In Interest Rates [Table]",
        "terseLabel": "Effect Of Changes In Interest Rates [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EffectOfExchangeRateChangesOnCashAndCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect of exchange rate changes on cash and cash equivalents",
        "terseLabel": "Effects of changes in exchange rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The effect of exchange rate changes on cash and cash equivalents held or due in a foreign currency. [Refer: Cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r118",
      "r119"
     ]
    },
    "ifrs-full_EffectOnAdjustmentToContractualServiceMarginOfChoiceNotToAdjustContractualServiceMarginForSomeChangesInFulfilmentCashFlowsForContractsWithDirectParticipationFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EffectOnAdjustmentToContractualServiceMarginOfChoiceNotToAdjustContractualServiceMarginForSomeChangesInFulfilmentCashFlowsForContractsWithDirectParticipationFeatures",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "ifrs-full_InsuranceFinanceIncomeExpenses",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effect on adjustment to contractual service margin of choice not to adjust contractual service margin for some changes in fulfilment cash flows for contracts with direct participation features",
        "definitionGuidance": "Change in fulfilment value - risk mitigation option",
        "verboseLabel": "Change in fulfilment value - risk mitigation option"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the effect on the adjustment to the contractual service margin in the current period of a choice not to adjust the contractual service margin for some changes in the fulfilment cash flows of contracts with direct participation features. [Refer: Description of composition of underlying items for contracts with direct participation features]"
       }
      }
     },
     "auth_ref": [
      "r244"
     ]
    },
    "aeg_EffectsOfExchangeRatesOnNetIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EffectsOfExchangeRatesOnNetIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effects of Exchange Rates on Net Income",
        "terseLabel": "Estimated approximate effects on net income",
        "documentation": "Effects of exchange rates on net income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EffectsOfExchangeRatesOnShareholdersEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EffectsOfExchangeRatesOnShareholdersEquity",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Effects of exchange rates on shareholders equity",
        "terseLabel": "Estimated approximate effects on shareholders' equity",
        "documentation": "Effects of exchange rates on shareholders equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EligibilityRestrictionOnTierThreeOwnFundsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EligibilityRestrictionOnTierThreeOwnFundsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Eligibility Restriction On Tier Three Own Funds [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EligibilityRestrictionOnTierThreeOwnFundsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EligibilityRestrictionOnTierThreeOwnFundsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Eligibility Restriction On Tier Three Own Funds [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EliminationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EliminationMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Elimination [Member]",
        "terseLabel": "Elimination [member]",
        "documentation": "Elimination."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EliminationOfIntersegmentAmountsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EliminationOfIntersegmentAmountsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Elimination of intersegment amounts [member]",
        "terseLabel": "Eliminations [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the elimination of intersegment amounts in the reconciliations of total segment amounts to amounts recognised in the entity's financial statements."
       }
      }
     },
     "auth_ref": [
      "r757",
      "r758"
     ]
    },
    "aeg_EliminationOfShareInEarningsLossOfJointVenturesAndAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EliminationOfShareInEarningsLossOfJointVenturesAndAssociates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Elimination of share in earnings loss of joint ventures and associates",
        "terseLabel": "Elimination of share in earnings of joint ventures and associates",
        "documentation": "Elimination of share in earnings loss of joint ventures and associates"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EmployeeBenefitObligationsExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EmployeeBenefitObligationsExpenses",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee benefit obligations expenses",
        "totalLabel": "Total defined benefit expenses",
        "documentation": "Employee benefit obligations expenses"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EmployeeBenefitsExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EmployeeBenefitsExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail": {
       "parentTag": "aeg_CommissionAndExpense",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 5.0
      },
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee benefits expense",
        "negatedLabel": "Employee expenses",
        "negatedTotalLabel": "Total",
        "terseLabel": "Employee expenses"
       }
      }
     },
     "auth_ref": [
      "r433",
      "r607",
      "r677",
      "r782"
     ]
    },
    "us-gaap_EmployeeStockOptionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "EmployeeStockOptionMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employee Stock Option [Member]",
        "terseLabel": "Employee Stock Option"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EmployerContributionToPensionPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EmployerContributionToPensionPlan",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Employer Contribution To Pension Plan",
        "terseLabel": "Employer contribution to pension plan",
        "documentation": "Employer contribution to pension plan."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EnergyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EnergyMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Energy [Member]",
        "terseLabel": "Energy [member]",
        "documentation": "Energy."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine1": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressAddressLine1",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line One",
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCityOrTown": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressCityOrTown",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, City or Town",
        "documentation": "Name of the City or Town"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCountry": {
     "xbrltype": "countryCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressCountry",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Country",
        "documentation": "ISO 3166-1 alpha-2 country code."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressPostalZipCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressPostalZipCode",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Postal Zip Code",
        "documentation": "Code for the postal or zip code"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressesAddressTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityAddressesAddressTypeAxis",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Addresses, Address Type [Axis]",
        "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCentralIndexKey": {
     "xbrltype": "centralIndexKeyItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCentralIndexKey",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Central Index Key",
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
       }
      }
     },
     "auth_ref": [
      "r792"
     ]
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCommonStockSharesOutstanding",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Common Stock, Shares Outstanding",
        "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCurrentReportingStatus": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityCurrentReportingStatus",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Current Reporting Status",
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityDomain",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity [Domain]",
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityEmergingGrowthCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityEmergingGrowthCompany",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Emerging Growth Company",
        "documentation": "Indicate if registrant meets the emerging growth company criteria."
       }
      }
     },
     "auth_ref": [
      "r792"
     ]
    },
    "dei_EntityFileNumber": {
     "xbrltype": "fileNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityFileNumber",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity File Number",
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityFilerCategory": {
     "xbrltype": "filerCategoryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityFilerCategory",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Filer Category",
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure."
       }
      }
     },
     "auth_ref": [
      "r792"
     ]
    },
    "dei_EntityIncorporationStateCountryCode": {
     "xbrltype": "edgarStateCountryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityIncorporationStateCountryCode",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Incorporation, State or Country Code",
        "documentation": "Two-character EDGAR code representing the state or country of incorporation."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityInteractiveDataCurrent": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityInteractiveDataCurrent",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Interactive Data Current",
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files)."
       }
      }
     },
     "auth_ref": [
      "r901"
     ]
    },
    "dei_EntityRegistrantName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityRegistrantName",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Registrant Name",
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
       }
      }
     },
     "auth_ref": [
      "r792"
     ]
    },
    "dei_EntityShellCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityShellCompany",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Shell Company",
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r792"
     ]
    },
    "dei_EntityVoluntaryFilers": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityVoluntaryFilers",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Voluntary Filers",
        "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityWellKnownSeasonedIssuer": {
     "xbrltype": "yesNoItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "EntityWellKnownSeasonedIssuer",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Well-known Seasoned Issuer",
        "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A."
       }
      }
     },
     "auth_ref": [
      "r902"
     ]
    },
    "ecd_EqtyAwrdsAdjFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsAdjFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments, Footnote [Text Block]",
        "terseLabel": "Equity Awards Adjustments, Footnote"
       }
      }
     },
     "auth_ref": [
      "r844"
     ]
    },
    "ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]",
        "terseLabel": "Equity Awards Adjustments, Excluding Value Reported in Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r897"
     ]
    },
    "ecd_EqtyAwrdsAdjsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsAdjsMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Awards Adjustments [Member]",
        "terseLabel": "Equity Awards Adjustments"
       }
      }
     },
     "auth_ref": [
      "r897"
     ]
    },
    "ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EqtyAwrdsInSummryCompstnTblForAplblYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]",
        "terseLabel": "Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table"
       }
      }
     },
     "auth_ref": [
      "r897"
     ]
    },
    "aeg_Equipment1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Equipment1Member",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equipment 1 [member]",
        "terseLabel": "Equipment [member]",
        "documentation": "Equipment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquitableSolvencyTwoRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquitableSolvencyTwoRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equitable Solvency Two Ratio",
        "terseLabel": "Equitable solvency two ratio",
        "documentation": "Equitable solvency two ratio."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Equity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Equity",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "aeg_EquityIncludingOtherEquityInstruments",
       "weight": 1.0,
       "order": 20.0
      },
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity",
        "totalLabel": "Group equity",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of residual interest in the assets of the entity after deducting all its liabilities."
       }
      }
     },
     "auth_ref": [
      "r134",
      "r136",
      "r175",
      "r176",
      "r183",
      "r488",
      "r520",
      "r581",
      "r582",
      "r601",
      "r638",
      "r648"
     ]
    },
    "ifrs-full_EquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity [Abstract]",
        "terseLabel": "Shareholders' equity"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EquityAndLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAndLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity and liabilities",
        "totalLabel": "Total equity and liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the entity's equity and liabilities. [Refer: Equity; Liabilities]"
       }
      }
     },
     "auth_ref": [
      "r638"
     ]
    },
    "ifrs-full_EquityAndLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAndLiabilitiesAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity and liabilities [abstract]",
        "terseLabel": "Equity and liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EquityAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAttributableToOwnersOfParent",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity attributable to owners of parent",
        "totalLabel": "Issued capital and reserves attributable to owners of Aegon Ltd."
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of equity attributable to the owners of the parent. This specifically excludes non-controlling interest."
       }
      }
     },
     "auth_ref": [
      "r637"
     ]
    },
    "ifrs-full_EquityAttributableToOwnersOfParentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityAttributableToOwnersOfParentMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity attributable to owners of parent [member]",
        "terseLabel": "Issued capital and reserves [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity attributable to the owners of the parent."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "aeg_EquityFundMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityFundMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Fund [Member]",
        "terseLabel": "Equity funds [member]",
        "documentation": "Equity fund."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityIncludingOtherEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityIncludingOtherEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_EquityAndLiabilities",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Including Other Equity Instruments",
        "totalLabel": "Total equity",
        "documentation": "Equity including other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EquityInstrumentsPercentageContributedToFairValueOfPlanAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EquityInstrumentsPercentageContributedToFairValueOfPlanAssets",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity instruments, percentage contributed to fair value of plan assets",
        "terseLabel": "Equity instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage equity instruments contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] [Contrast: Equity instruments, amount contributed to fair value of plan assets]"
       }
      }
     },
     "auth_ref": [
      "r910"
     ]
    },
    "aeg_EquityMovementsOfJointVenturesAndAssociatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityMovementsOfJointVenturesAndAssociatesMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Movements Of Joint Ventures And Associates [member]",
        "terseLabel": "Equity movements of joint ventures and associates [member]",
        "documentation": "Equity movements of joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityPriceIndex": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityPriceIndex",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Price Index",
        "terseLabel": "Equity",
        "documentation": "Equity price index."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityPricesTenPercentageHigherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityPricesTenPercentageHigherMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity prices, ten percentage higher [member]",
        "verboseLabel": "Equity 10% increase [member]",
        "documentation": "Equity prices, ten percentage higher."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityPricesTenPercentageLowerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityPricesTenPercentageLowerMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity prices, ten percentage lower [member]",
        "verboseLabel": "Equity 10% decrease [member]",
        "documentation": "Equity prices, ten percentage lower."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityPricesTwentyPercentageHigherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityPricesTwentyPercentageHigherMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Prices, Twenty Percentage Higher [member]",
        "verboseLabel": "Equity 25% increase [member]",
        "documentation": "Equity prices, twenty percentage higher."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityPricesTwentyPercentageLowerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityPricesTwentyPercentageLowerMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Prices, Twenty Percentage Lower [member]",
        "verboseLabel": "Equity 25% decrease [member]",
        "documentation": "Equity prices, twenty percentage lower."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EquityRealEstateAndNonfixedIncomeExposure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EquityRealEstateAndNonfixedIncomeExposure",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity, real estate and nonfixed income exposure",
        "verboseLabel": "Maximum exposure of equity market risk and other investments risk",
        "documentation": "Equity, real estate and non-fixed income exposure."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_EquityValuationAssumptionDifferenceFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "EquityValuationAssumptionDifferenceFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity Valuation Assumption Difference, Footnote [Text Block]",
        "terseLabel": "Equity Valuation Assumption Difference, Footnote"
       }
      }
     },
     "auth_ref": [
      "r854"
     ]
    },
    "ecd_ErrCompAnalysisTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ErrCompAnalysisTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Erroneous Compensation Analysis [Text Block]",
        "terseLabel": "Erroneous Compensation Analysis"
       }
      }
     },
     "auth_ref": [
      "r811",
      "r822",
      "r832",
      "r865"
     ]
    },
    "ecd_ErrCompRecoveryTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ErrCompRecoveryTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Erroneously Awarded Compensation Recovery [Table]",
        "terseLabel": "Erroneously Awarded Compensation Recovery"
       }
      }
     },
     "auth_ref": [
      "r808",
      "r819",
      "r829",
      "r862"
     ]
    },
    "aeg_EstablishingOfLossRecoveryComponentFromOnerousUnderlyingContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EstablishingOfLossRecoveryComponentFromOnerousUnderlyingContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Establishing of Loss Recovery Component from Onerous Underlying Contracts",
        "terseLabel": "Establishing of loss recovery component from onerous underlying contracts",
        "documentation": "Establishing of loss recovery component from onerous underlying contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EstimatedApproximateEffectsOnContractualServiceMargin": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EstimatedApproximateEffectsOnContractualServiceMargin",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimated Approximate Effects on Contractual Service Margin",
        "terseLabel": "CSM",
        "documentation": "Estimated approximate effects on contractual service margin."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EstimatedApproximateEffectsOnNetIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EstimatedApproximateEffectsOnNetIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimated Approximate Effects on Net Income",
        "terseLabel": "Net result",
        "documentation": "Estimated approximate effects on net income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EstimatedApproximateEffectsOnShareholdersEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EstimatedApproximateEffectsOnShareholdersEquity",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimated Approximate Effects on Shareholders' Equity",
        "verboseLabel": "Shareholders' equity",
        "documentation": "Estimated approximate effects on shareholders' equity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_EstimatesOfPresentValueOfFutureCashInflowsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EstimatesOfPresentValueOfFutureCashInflowsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimates of present value of future cash inflows [member]",
        "terseLabel": "Present value of cash inflows [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the estimates of the present value of future cash flows inflows related to insurance contracts. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r236"
     ]
    },
    "ifrs-full_EstimatesOfPresentValueOfFutureCashOutflowsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "EstimatesOfPresentValueOfFutureCashOutflowsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Estimates of present value of future cash outflows [member]",
        "terseLabel": "Present value of cash outflows [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the estimates of the present value of future cash flows outflows related to insurance contracts. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r235"
     ]
    },
    "aeg_EurGbpMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EurGbpMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "EUR GBP [Member]",
        "terseLabel": "EUR/GBP [member]",
        "documentation": "EUR/GBP."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EurUsdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EurUsdMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "EUR USD [Member]",
        "terseLabel": "EUR/USD [member]",
        "documentation": "EUR/USD."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EventAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EventAxis",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Event [Axis]",
        "documentation": "Event."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_EventMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "EventMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Event [Member]",
        "documentation": "Event."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExecutiveBoardMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExecutiveBoardMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Executive Board [Member]",
        "terseLabel": "Executive board [member]",
        "documentation": "Executive board."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ExecutiveCategoryAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ExecutiveCategoryAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Executive Category [Axis]",
        "terseLabel": "Executive Category:"
       }
      }
     },
     "auth_ref": [
      "r860"
     ]
    },
    "aeg_ExecutiveDirectorsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExecutiveDirectorsMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Executive Directors [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExpectedAllowanceForCreditLossesOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExpectedAllowanceForCreditLossesOfFinancialAssets",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfMovementsInTheExpectedCreditLossesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected Allowance For Credit Losses Of Financial Assets",
        "negatedLabel": "Expected credit losses",
        "documentation": "Expected allowance for credit losses of financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExpectedCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExpectedCreditLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected Credit Loss",
        "totalLabel": "Loss allowance on December\u00a031",
        "documentation": "Expected credit loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpectedCreditLossRate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpectedCreditLossRate",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected credit loss rate"
       }
      },
      "en": {
       "role": {
        "documentation": "The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights."
       }
      }
     },
     "auth_ref": [
      "r736",
      "r751"
     ]
    },
    "aeg_ExpectedCreditLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExpectedCreditLosses",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected Credit Losses",
        "terseLabel": "Expected credit losses",
        "documentation": "Expected credit losses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExpectedDeferredGainsRecognizedDirectlyInEquityToBeReclassifiedIntoProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExpectedDeferredGainsRecognizedDirectlyInEquityToBeReclassifiedIntoProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expected deferred gains recognized directly in equity to be reclassified into profit or loss",
        "definitionGuidance": "Expected deferred gain/(loss) to be reclassified from equity into net result during the next 12 months",
        "documentation": "Expected deferred gains recognized directly in equity to be reclassified into profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExpenseByNature": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExpenseByNature",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expenses, by nature",
        "totalLabel": "Total charges"
       }
      }
     },
     "auth_ref": [
      "r677"
     ]
    },
    "aeg_ExpensesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExpensesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Expenses [Member]",
        "terseLabel": "Expenses [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExperienceAdjustmentsOnCurrentService": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExperienceAdjustmentsOnCurrentService",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Experience Adjustments on Current Service",
        "terseLabel": "Experience adjustments on current service",
        "documentation": "Release of risk adjustment for non financial risk."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExperienceAdjustmentsOnIncurredClaims": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExperienceAdjustmentsOnIncurredClaims",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Experience Adjustments On Incurred Claims",
        "terseLabel": "Experience adjustments on incurred claims",
        "documentation": "Experience adjustments on incurred claims."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExperienceAdjustmentsThatRelateToAReversalOfUnderlyingOnerousContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExperienceAdjustmentsThatRelateToAReversalOfUnderlyingOnerousContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Experience Adjustments that Relate to a Reversal of Underlying Onerous Contracts",
        "terseLabel": "Experience adjustments that relate to (a reversal of) underlying onerous contracts",
        "documentation": "Experience adjustments that relate to a reversal of underlying onerous contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ExperienceAdjustmentsThatRelateToCurrentServiceIncludedInOtherIncomeCharges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ExperienceAdjustmentsThatRelateToCurrentServiceIncludedInOtherIncomeCharges",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Experience Adjustments That Relate To Current Service Included In Other Income Charges",
        "terseLabel": "Experience adjustments that relate to current service included in other income charges",
        "documentation": "Experience adjustments that relate to current service included in other income charges."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Explanation of inputs, assumptions and estimation techniques used to apply impairment requirements [text block]",
        "terseLabel": "Summary of Economic Variable Assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The explanation of the inputs, assumptions and estimation techniques used to apply the impairment requirements for financial instruments."
       }
      }
     },
     "auth_ref": [
      "r326",
      "r562"
     ]
    },
    "ifrs-full_ExternalCreditGradesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExternalCreditGradesAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "External credit grades [axis]",
        "terseLabel": "External credit grades [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r735",
      "r750",
      "r778"
     ]
    },
    "ifrs-full_ExternalCreditGradesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ExternalCreditGradesDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "External credit grades [domain]",
        "terseLabel": "External credit grades [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'External credit grades' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r735",
      "r750",
      "r778"
     ]
    },
    "aeg_FHLBSecuredBorrowingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FHLBSecuredBorrowingsMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "FHLB Secured borrowings [member]",
        "terseLabel": "FHLB Secured Borrowings [member]",
        "documentation": "FHLB secured borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FTSEHundredMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FTSEHundredMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "FTSE Hundred [member]",
        "terseLabel": "FTSE 100 [member]",
        "documentation": "FTSE Hundred."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FairValueAtFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FairValueAtFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value At Financial Assets",
        "terseLabel": "Assets carried at fair value",
        "documentation": "Fair value at financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FairValueHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FairValueHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair value hedges [member]",
        "presentationGuidance": "Applying the fair value option [member]",
        "verboseLabel": "Fair value hedges [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedges of the exposure to changes in fair value of a recognised asset or liability or an unrecognised firm commitment, or an identified portion of such an asset, liability or firm commitment, that is attributable to a particular risk and could affect profit or loss. [Refer: Types of hedges [domain]]"
       }
      }
     },
     "auth_ref": [
      "r95",
      "r308",
      "r316",
      "r319",
      "r551",
      "r557",
      "r560"
     ]
    },
    "aeg_FairValueOfInvestmentInQuotedShareHeldByTheCompany": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FairValueOfInvestmentInQuotedShareHeldByTheCompany",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Of Investment In Quoted Share Held By The Company",
        "terseLabel": "Fair value of investment in quoted share held by the company",
        "documentation": "Fair value of investment in quoted share held by the company."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FairValueOfLongtermBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FairValueOfLongtermBorrowings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair value of longterm borrowings",
        "terseLabel": "Fair value of long-term borrowings",
        "documentation": "Fair value of long-term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FairValueOfSharesAtGrantDate": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FairValueOfSharesAtGrantDate",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Of Shares At Grant Date",
        "terseLabel": "Fair value of shares at grant date in EUR",
        "documentation": "Fair value of shares at grant date."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FairValueOfTrustPassThroughSecuritiesLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FairValueOfTrustPassThroughSecuritiesLoans",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair value of Trust pass through securities loans",
        "verboseLabel": "Fair value",
        "documentation": "Fair value of trust pass through securities loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FairValueOrCashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FairValueOrCashFlowHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Or Cash Flow Hedges [Member]",
        "terseLabel": "Cash flow hedges [member]",
        "documentation": "Fair Value Or Cash Flow Hedges"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FederalHomeLoanBankSharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FederalHomeLoanBankSharesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Federal Home Loan Bank shares [member]",
        "terseLabel": "Federal Home Loan Bank shares [member]",
        "documentation": "Federal Home Loan Bank shares."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FeeAndCommissionIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FeeAndCommissionIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherResult",
       "weight": -1.0,
       "order": 37.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee and commission income",
        "terseLabel": "Fees and commission income",
        "verboseLabel": "On December 31"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "ifrs-full_FeeAndCommissionIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FeeAndCommissionIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee and commission income [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FeeAndCommissionIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FeeAndCommissionIncomeExpense",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee and commission income (expense)",
        "terseLabel": "Fee and commission income"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "aeg_FeeAndCommissionIncomeFromContinuingAndDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FeeAndCommissionIncomeFromContinuingAndDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "aeg_RevenueFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee And Commission Income From Continuing And Discontinued Operations",
        "terseLabel": "Fee and commission income",
        "documentation": "Fee and commission income from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FeeFromAssetsManagementAndInsuranceDistrubution": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FeeFromAssetsManagementAndInsuranceDistrubution",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee From Assets Management And Insurance Distrubution",
        "verboseLabel": "Fee from asset management and insurance distribution",
        "documentation": "Fee from assets management and insurance distrubution."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FeeIncomeAndExpenseAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FeeIncomeAndExpenseAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee income and expense [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FeeIncomeExpenseArisingFromTrustAndFiduciaryActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FeeIncomeExpenseArisingFromTrustAndFiduciaryActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fee income (expense) arising from trust and fiduciary activities",
        "verboseLabel": "Fees on trust and fiduciary activities"
       }
      }
     },
     "auth_ref": [
      "r300",
      "r547"
     ]
    },
    "aeg_FifteenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FifteenYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fifteen Years [Member]",
        "terseLabel": "15 year [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinalDividendMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinalDividendMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Final Dividend [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinalDividendTwoThousandAndTwentyFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinalDividendTwoThousandAndTwentyFiveMember",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Final Dividend Two Thousand And Twenty Five [Member]",
        "verboseLabel": "Final Dividend 2025 [Member]",
        "documentation": "Final dividend two thousand and twenty five."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinalDividendTwoThousandAndTwentyFourMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinalDividendTwoThousandAndTwentyFourMember",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Final Dividend Two Thousand And Twenty Four [Member]",
        "terseLabel": "Final Dividend 2024 [Member]",
        "documentation": "Final dividend two thousand and twenty four."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinalDividendTwoThousandAndTwentyThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinalDividendTwoThousandAndTwentyThreeMember",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Final Dividend Two Thousand And Twenty Three [Member]",
        "terseLabel": "Final Dividend 2023 [Member]",
        "documentation": "Final dividend two thousand and twenty three member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinalDividendsProposed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinalDividendsProposed",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Final dividends proposed",
        "negatedLabel": "Final dividend on common shares",
        "documentation": "Final dividends proposed."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finance income (expenses) from reinsurance contracts held excluded from profit or loss, net of tax",
        "verboseLabel": "Amounts recognized in OCI"
       }
      }
     },
     "auth_ref": [
      "r265",
      "r267",
      "r671"
     ]
    },
    "ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 26.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finance income (expenses) from reinsurance contracts held recognised in profit or loss",
        "terseLabel": "Net reinsurance finance income / (expenses) on reinsurance held",
        "verboseLabel": "Net reinsurance finance income / (expenses) on reinsurance held",
        "positiveLabel": "Amounts recognized in profit or loss",
        "definitionGuidance": "Other reinsurance finance income / (expenses)"
       }
      }
     },
     "auth_ref": [
      "r265",
      "r667"
     ]
    },
    "ifrs-full_FinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets",
        "measurementGuidance": "Loans at amortized cost",
        "totalLabel": "Total",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "presentationGuidance": "Investments measured at amortized cost",
        "verboseLabel": "Financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity\u2019s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity\u2019s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity\u2019s own equity instruments. For this purpose the entity\u2019s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity\u2019s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r323",
      "r330",
      "r331",
      "r337",
      "r566",
      "r568",
      "r572",
      "r736"
     ]
    },
    "ifrs-full_FinancialAssetsAtAmortisedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtAmortisedCost",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at amortised cost",
        "definitionGuidance": "Financial assets measured at amortized cost",
        "terseLabel": "Amortized cost"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r346",
      "r535"
     ]
    },
    "ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtAmortisedCostCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at amortised cost, category [member]",
        "presentationGuidance": "Measured at amortized cost [member]",
        "terseLabel": "Financial assets at amortised cost, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at amortised cost category. [Refer: Financial assets at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r346",
      "r535"
     ]
    },
    "aeg_FinancialAssetsAtAmortisedCostNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsAtAmortisedCostNet",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets At Amortised Cost Net",
        "terseLabel": "Amortized cost",
        "definitionGuidance": "Financial assets measured at amortized cost",
        "documentation": "Financial assets at amortised cost net."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets, at fair value",
        "terseLabel": "Fair value",
        "definitionGuidance": "Fair value",
        "measurementGuidance": "Assets carried at fair value",
        "exampleGuidance": "Total\u00a0financial\u00a0assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of financial assets. [Refer: At fair value [member]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through other comprehensive income",
        "terseLabel": "Fair value through other comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r348",
      "r538"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through other comprehensive income, category [member]",
        "definitionGuidance": "Other [member]",
        "terseLabel": "Fair value through other comprehensive income [member]",
        "presentationGuidance": "At fair value through other comprehensive income [member]",
        "verboseLabel": "FVOCI financial assets [member]",
        "disclosureGuidance": "Financial assets at fair value through other comprehensive income, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at fair value through other comprehensive income category. [Refer: Financial assets at fair value through other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r348",
      "r538"
     ]
    },
    "aeg_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeThatShallBeNotBeRecycled": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeThatShallBeNotBeRecycled",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets At Fair Value Through Other Comprehensive Income That Shall Be Not Be Recycled",
        "terseLabel": "Financial assets measured at FVOCI \u2013 no recycling",
        "verboseLabel": "FVOCI\u00a0(no recycling)",
        "documentation": "Financial assets at fair value through other comprehensive income that shall be not be recycled."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeThatShallBeRecycled": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeThatShallBeRecycled",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets At Fair Value Through Other Comprehensive Income That Shall Be Recycled",
        "presentationGuidance": "Financial assets measured at FVOCI \u2013 with recycling",
        "definitionGuidance": "FVOCI\u00a0(With recycling)",
        "documentation": "Financial assets at fair value through other comprehensive income that shall be recycled."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss",
        "definitionGuidance": "Financial assets measured at FVPL",
        "terseLabel": "Fair value through profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r344",
      "r531"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, category [member]",
        "verboseLabel": "Financial assets at fair value through profit or loss [member]",
        "definitionGuidance": "FVPL financial assets [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at fair value through profit or loss category. [Refer: Financial assets at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r344",
      "r531"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, classified as held for trading",
        "terseLabel": "Trading"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets at fair value through profit or loss classified as held for trading. A financial asset is classified as held for trading if: (a) it is acquired principally for the purpose of selling it in the near term; (b) on initial recognition it is part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking; or (c) it is a derivative (except for a derivative that is a financial guarantee contract or a designated and effective hedging instrument). [Refer: At fair value [member]; Financial assets at fair value through profit or loss, mandatorily measured at fair value]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently",
        "presentationGuidance": "Financial assets measured at FVPL \u2013 designated",
        "terseLabel": "Designated"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets at fair value through profit or loss that were designated as such upon initial recognition or subsequently. [Refer: At fair value [member]; Financial assets at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r344"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member]",
        "terseLabel": "Assets designated at FVPL [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets at fair value through profit or loss designated as such upon initial recognition or subsequently category. [Refer: Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently]"
       }
      }
     },
     "auth_ref": [
      "r344"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail": {
       "parentTag": "ifrs-full_FinancialAssets",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, mandatorily measured at fair value",
        "verboseLabel": "Financial assets measured at FVPL \u2013 mandatory"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets mandatorily measured at fair value through profit or loss in accordance with IFRS 9. [Refer: Financial assets at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r344"
     ]
    },
    "ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]",
        "presentationGuidance": "Assets mandatorily measured at FVPL [member]",
        "terseLabel": "Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial assets mandatorily measured at fair value through profit or loss category. [Refer: Financial assets at fair value through profit or loss, mandatorily measured at fair value]"
       }
      }
     },
     "auth_ref": [
      "r344"
     ]
    },
    "aeg_FinancialAssetsExcludingDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsExcludingDerivatives",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 59.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets Excluding Derivatives",
        "terseLabel": "Investments",
        "documentation": "Financial assets excluding derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialAssetsExcludingDerivativesCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsExcludingDerivativesCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets Excluding Derivatives Category [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialAssetsExcludingDerivativesMeasurementCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsExcludingDerivativesMeasurementCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets Excluding Derivatives Measurement Category [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialAssetsExcludingReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsExcludingReceivablesMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets Excluding Receivables [Member]",
        "terseLabel": "Financial assets excluding receivables [member]",
        "documentation": "Financial assets excluding receivables."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsHeldForManagingLiquidityRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsHeldForManagingLiquidityRisk",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets held for managing liquidity risk",
        "terseLabel": "Amount held in general account investment readily redeemable and saleable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets held for managing liquidity risk (for example, financial assets that are readily saleable or expected to generate cash inflows to meet cash outflows on financial liabilities). [Refer: Liquidity risk [member]; Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r351"
     ]
    },
    "ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets measured at fair value through other comprehensive income",
        "verboseLabel": "Financial assets measured at FVOCI",
        "negatedTerseLabel": "Investments measured at FVOCI"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets that are measured at fair value through other comprehensive income. A financial asset shall be measured at fair value through other comprehensive income if both of the following conditions are met: (a) the financial asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets and (b) the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. [Refer: At fair value [member]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r348",
      "r537"
     ]
    },
    "aeg_FinancialAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets [Member]",
        "terseLabel": "Financial assets [member]",
        "documentation": "Financial Assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial assets pledged as collateral for liabilities or contingent liabilities",
        "definitionGuidance": "Contingent liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r295",
      "r543"
     ]
    },
    "aeg_FinancialAssetsRevaluedAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialAssetsRevaluedAmountMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Assets Revalued Amount [member]",
        "terseLabel": "Financial assets revalued amount [Member]",
        "documentation": "Financial assets revalued amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialBankingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialBankingMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Banking [member]",
        "terseLabel": "Financial - Banking [member]",
        "documentation": "Financial banking."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialGuaranteeContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialGuaranteeContractsMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial guarantee contracts [member]",
        "terseLabel": "Financial guarantee contracts [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for contracts that require the issuer to make specified payments to reimburse the holder for a loss it incurs because a specified debtor fails to make payment when due in accordance with the original or modified terms of a debt instrument."
       }
      }
     },
     "auth_ref": [
      "r337",
      "r354",
      "r567",
      "r572"
     ]
    },
    "aeg_FinancialInstrumentsAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialInstrumentsAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments Assets [Member]",
        "terseLabel": "Financial instruments - assets [member]",
        "documentation": "Financial instruments assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialInstrumentsLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialInstrumentsLiabilitiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments Liabilities [Member]",
        "terseLabel": "Financial instruments - liabilities [member]",
        "documentation": "Financial instruments liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedAtAccountNoCreditDerivativesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedAtAccountNoCreditDerivativesAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments Measured At Fair Value Through Profit Or Loss Because Credit Derivative Is Used At Account No Credit Derivatives [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedAtAccountNoCreditDerivativesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedAtAccountNoCreditDerivativesDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments Measured At Fair Value Through Profit Or Loss Because Credit Derivative Is Used At Account No Credit Derivatives [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk [axis]",
        "terseLabel": "Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r321"
     ]
    },
    "ifrs-full_FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRiskDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk [domain]",
        "terseLabel": "Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments measured at fair value through profit or loss, because a credit derivative is used to manage the credit risk of these instruments. It also represents the standard value for the 'Financial instruments measured at fair value through profit or loss because credit derivative is used to manage credit risk' axis if no other member is used. [Refer: Classes of financial instruments [domain]; Credit risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r321"
     ]
    },
    "aeg_FinancialInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments [Member]",
        "terseLabel": "Financial instruments [member]",
        "documentation": "Financial instruments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialInstrumentsNotCreditimpairedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialInstrumentsNotCreditimpairedMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments not credit-impaired [member]",
        "terseLabel": "Lifetime ECL not credit impaired [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments that are not credit-impaired. [Refer: Credit impairment of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337",
      "r566",
      "r572"
     ]
    },
    "ifrs-full_FinancialInstrumentsPurchasedOrOriginatedCreditimpairedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialInstrumentsPurchasedOrOriginatedCreditimpairedMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments purchased or originated credit-impaired [member]",
        "terseLabel": "Purchased credit impaired [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for financial instruments that were purchased or originated as credit-impaired. [Refer: Financial instruments credit-impaired [member]]"
       }
      }
     },
     "auth_ref": [
      "r329",
      "r336",
      "r565",
      "r571"
     ]
    },
    "aeg_FinancialInstrumentsSoldOrRePledgedAsCollateralAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialInstrumentsSoldOrRePledgedAsCollateralAtFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Instruments Sold Or Re pledged As Collateral At Fair Value",
        "terseLabel": "Fair value of cash collateral received",
        "documentation": "Financial instruments sold or re pledged as collateral at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial assets",
        "verboseLabel": "Financial instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial assets. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r727",
      "r754"
     ]
    },
    "ifrs-full_FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": -1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities",
        "definitionGuidance": "Financial instruments"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r727",
      "r754"
     ]
    },
    "ifrs-full_FinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities",
        "terseLabel": "Financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity\u2019s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity\u2019s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity\u2019s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity\u2019s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity\u2019s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity\u2019s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtAmortisedCostCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at amortised cost, category [member]",
        "terseLabel": "Financial liabilities at amortised cost, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial liabilities at amortised cost category. [Refer: Financial liabilities at amortised cost]"
       }
      }
     },
     "auth_ref": [
      "r347",
      "r536"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities, at fair value",
        "definitionGuidance": "Fair value of subordinated borrowings",
        "terseLabel": "Liabilities carried at fair value",
        "verboseLabel": "Total estimated fair value"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at fair value through profit or loss, category [member]",
        "terseLabel": "Financial liabilities at fair value through profit or loss, category [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the financial liabilities at fair value through profit or loss category. [Refer: Financial liabilities at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r345",
      "r534"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at fair value through profit or loss that meet definition of held for trading",
        "terseLabel": "Trading"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities at fair value through profit or loss that meet the definition of held for trading. A financial liability is classified as held for trading if: (a) it is acquired or incurred principally for the purpose of selling or repurchasing it in the near term; (b) on initial recognition it is part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking; or (c) it is a derivative (except for a derivative that is a financial guarantee contract or a designated and effective hedging instrument). [Refer: Financial liabilities at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r345",
      "r533"
     ]
    },
    "ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently",
        "terseLabel": "Designated"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities at fair value through profit or loss that were designated as such upon initial recognition or subsequently. [Refer: At fair value [member]; Financial liabilities at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r345",
      "r532"
     ]
    },
    "aeg_FinancialOtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialOtherMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial Other [member]",
        "terseLabel": "Financial - Other [member]",
        "documentation": "Financial other."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialRisksManagementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialRisksManagementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Financial risks management[abstract]",
        "documentation": "Financial risks management."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancialsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancialsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financials [member]",
        "terseLabel": "Financials [member]",
        "documentation": "Financials."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancingNetInvestmentResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancingNetInvestmentResult",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_TotalNetInvestmentResult",
       "weight": 1.0,
       "order": 32.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Net Investment Result",
        "totalLabel": "Financing net investment result",
        "documentation": "Financing net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancingNetInvestmentResultLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancingNetInvestmentResultLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResult"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing net investment result [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancingNetInvestmentResultMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancingNetInvestmentResultMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing Net Investment Result [Member]",
        "documentation": "Financing net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancingnetinvestmentresultAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancingnetinvestmentresultAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing net investment result [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FinancingnetinvestmentresultTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FinancingnetinvestmentresultTable",
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResult"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Financing net investment result [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FivePercentageDecreaseInExpensesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FivePercentageDecreaseInExpensesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Five Percentage Decrease in Expenses [Member]",
        "terseLabel": "5% decrease in expenses [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FivePercentageDecreaseInMortalityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FivePercentageDecreaseInMortalityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Five Percentage Decrease In Mortality Rates [Member]",
        "verboseLabel": "5% decrease in mortality rates [member]",
        "documentation": "Five percentage decrease in mortality rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FivePercentageIncreaseInExpensesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FivePercentageIncreaseInExpensesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Five Percentage Increase in Expenses [Member]",
        "terseLabel": "5% increase in expenses [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FivePercentageIncreaseInMortalityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FivePercentageIncreaseInMortalityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Five Percentage Increase in Mortality Rates [Member]",
        "terseLabel": "5% increase in mortality rates [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FiveYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Five Years [Member]",
        "terseLabel": "5 year [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FixedChargeCoverageRatio": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FixedChargeCoverageRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fixed Charge Coverage Ratio",
        "terseLabel": "Fixed Charge Coverage",
        "documentation": "Fixed charge coverage ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FixedCompensationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FixedCompensationMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fixed Compensation [Member]",
        "terseLabel": "Fixed compensation [member]",
        "documentation": "Fixed compensation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FixedDeferredAnnuityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FixedDeferredAnnuityMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fixed Deferred Annuity [Member]",
        "terseLabel": "Fixed Deferred Annuity [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_FloatingInterestRateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "FloatingInterestRateMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Floating interest rate [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a non-fixed interest rate. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r937"
     ]
    },
    "ifrs-full_ForeignCountriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ForeignCountriesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign countries [member]",
        "terseLabel": "International [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for countries outside the entity's country of domicile. [Refer: Country of domicile [member]]"
       }
      }
     },
     "auth_ref": [
      "r373",
      "r374"
     ]
    },
    "aeg_ForeignCurrencyTranslationReserveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ForeignCurrencyTranslationReserveMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign Currency Translation Reserve [member]",
        "terseLabel": "Foreign currency translation reserve [member]",
        "documentation": "Foreign currency translation reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ForeignExchangeContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ForeignExchangeContractsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign Exchange Contracts [Member]",
        "terseLabel": "Foreign exchange contracts [member]",
        "documentation": "Foreign exchange contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ForeignExchangeFxForwardMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ForeignExchangeFxForwardMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign Exchange FX Forward [Member]",
        "terseLabel": "Foreign exchange - FX forward [member]",
        "documentation": "Foreign exchange FX forward."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ForeignExchangeRatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ForeignExchangeRatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign exchange rates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Disqualification of Tax Benefits, Amount",
        "terseLabel": "Forgone Recovery due to Disqualification of Tax Benefits, Amount"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r869"
     ]
    },
    "ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryDueToExpenseOfEnforcementAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Expense of Enforcement, Amount",
        "terseLabel": "Forgone Recovery due to Expense of Enforcement, Amount"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r869"
     ]
    },
    "ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryDueToViolationOfHomeCountryLawAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery due to Violation of Home Country Law, Amount",
        "terseLabel": "Forgone Recovery due to Violation of Home Country Law, Amount"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r869"
     ]
    },
    "ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryExplanationOfImpracticabilityTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery, Explanation of Impracticability [Text Block]",
        "terseLabel": "Forgone Recovery, Explanation of Impracticability"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r869"
     ]
    },
    "ecd_ForgoneRecoveryIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "ForgoneRecoveryIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forgone Recovery, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r869"
     ]
    },
    "ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]",
        "terseLabel": "Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year"
       }
      }
     },
     "auth_ref": [
      "r849"
     ]
    },
    "aeg_FranceGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FranceGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "France Government bonds [member]",
        "terseLabel": "France government bonds [member]",
        "documentation": "France government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FreeCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FreeCashFlows",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Free Cash Flows",
        "documentation": "Free cash flows."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FundsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Funds [member]",
        "terseLabel": "Funds [member]",
        "documentation": "Funds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FundsWithheldUnderReinsuranceContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FundsWithheldUnderReinsuranceContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Funds Withheld Under Reinsurance Contracts",
        "terseLabel": "Funds withheld under reinsurance contracts",
        "documentation": "Funds withheld under reinsurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_FutureServicingRightsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "FutureServicingRightsMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Future Servicing Rights [Member]",
        "documentation": "Future servicing rights."
       }
      }
     },
     "auth_ref": []
    },
    "country_GB": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2025",
     "localname": "GB",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "UNITED KINGDOM",
        "terseLabel": "United Kingdom [member]",
        "verboseLabel": "United Kingdom [member]"
       }
      }
     },
     "auth_ref": []
    },
    "currency_GBP": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2025",
     "localname": "GBP",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "United Kingdom, Pounds",
        "terseLabel": "GBP [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GBP250MillionMediumtermNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GBP250MillionMediumtermNotesMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "GBP 250 million Medium-Term Notes [member]",
        "terseLabel": "GBP 250 Million Medium-Term Notes [member]",
        "documentation": "GBP 250 million medium-term notes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GBP400MillionSeniorUnsecuredNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GBP400MillionSeniorUnsecuredNotesMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "GBP 400 million Senior Unsecured Notes [member]",
        "terseLabel": "GBP 400 Million Senior Unsecured Notes [member]",
        "documentation": "GBP 400 million senior unsecured notes."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainLossOnChangeInFairValueOfHedgedItemUsedAsBasisForRecognisingHedgeIneffectiveness": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossOnChangeInFairValueOfHedgedItemUsedAsBasisForRecognisingHedgeIneffectiveness",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) on change in fair value of hedged item used as basis for recognising hedge ineffectiveness",
        "verboseLabel": "Ineffective portion of hedge transactions to which hedge accounting is applied",
        "definitionGuidance": "Change in fair value of hedged item for ineffectiveness assessment"
       }
      },
      "en": {
       "role": {
        "documentation": "The gain (loss) on the change in fair value of the hedged item used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item."
       }
      }
     },
     "auth_ref": [
      "r312",
      "r313",
      "r555",
      "r556"
     ]
    },
    "ifrs-full_GainLossOnChangeInFairValueOfHedgingInstrumentUsedAsBasisForRecognisingHedgeIneffectiveness": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossOnChangeInFairValueOfHedgingInstrumentUsedAsBasisForRecognisingHedgeIneffectiveness",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) on change in fair value of hedging instrument used as basis for recognising hedge ineffectiveness",
        "terseLabel": "Changes\u00a0in\u00a0fair value used for calculating hedge ineffectiveness"
       }
      },
      "en": {
       "role": {
        "documentation": "The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item."
       }
      }
     },
     "auth_ref": [
      "r306",
      "r549"
     ]
    },
    "aeg_GainLossOnChangesInDiscountRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainLossOnChangesInDiscountRates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain Loss on Changes in Discount Rates",
        "terseLabel": "Gain (loss) on changes in discount rates",
        "documentation": "Gain Loss on changes in discount rates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainLossOnHedgeIneffectiveness": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossOnHedgeIneffectiveness",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) on hedge ineffectiveness",
        "definitionGuidance": "Hedge ineffectiveness on cash flow hedges"
       }
      },
      "en": {
       "role": {
        "documentation": "The gain (loss) on hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item."
       }
      }
     },
     "auth_ref": [
      "r317",
      "r558"
     ]
    },
    "ifrs-full_GainLossOnHedgeIneffectivenessRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossOnHedgeIneffectivenessRecognisedInProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) on hedge ineffectiveness recognised in profit or loss",
        "verboseLabel": "Reclassification of gain (loss) from equity to investment income",
        "terseLabel": "Gains/(losses) reclassified from equity into the income statement"
       }
      }
     },
     "auth_ref": [
      "r317",
      "r318",
      "r558",
      "r559"
     ]
    },
    "aeg_GainLossOnOtherInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainLossOnOtherInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain Loss On Other Investments",
        "totalLabel": "Total",
        "terseLabel": "Total",
        "documentation": "Gain loss on other investments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) on remeasurement, net defined benefit liability (asset)",
        "negatedLabel": "Remeasurements of defined benefit plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r26",
      "r475"
     ]
    },
    "ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Changes in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income [abstract]",
        "terseLabel": "Remeasurements of the defined benefit obligations:"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainLossOnReversalOfOnerousContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainLossOnReversalOfOnerousContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain Loss on Reversal of Onerous Contracts",
        "verboseLabel": "Gain (loss) on reversal of onerous contracts",
        "documentation": "Gain loss on reversal of onerous contracts."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_ResultBeforeTaxFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation",
        "verboseLabel": "Impairment loss on measurement of disposal group"
       }
      }
     },
     "auth_ref": [
      "r285"
     ]
    },
    "aeg_GainOnDisposalOfPortfolioInsuranceContractAndReinsuranceContract": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainOnDisposalOfPortfolioInsuranceContractAndReinsuranceContract",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain On Disposal Of Portfolio Insurance Contract And Reinsurance Contract",
        "verboseLabel": "Gain on disposal of portfolio insurance contract and reinsurance contract",
        "documentation": "Gain on disposal of portfolio insurance contract and reinsurance contract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainOnDivestmentOfSubsidiariesOrAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainOnDivestmentOfSubsidiariesOrAssociates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain On Divestment Of Subsidiaries Or Associates",
        "terseLabel": "Gain on divestment of subsidiaries or associates",
        "documentation": "Gain on divestment of subsidiaries or associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainOnTransferOfLegalOwnership": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainOnTransferOfLegalOwnership",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gain On Transfer Of Legal Ownership",
        "verboseLabel": "Gain on transfer of legal ownership.",
        "documentation": "Gain on transfer of legal ownership."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainsAndLossesOnSaleOfAssetsOnUnconsolidatedStructuredEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsAndLossesOnSaleOfAssetsOnUnconsolidatedStructuredEntities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail": {
       "parentTag": "aeg_InterestIncomeAndGainsAndLossesOnSaleOfAssetsOnUnconsolidatedStructuredEntities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains And Losses On Sale Of Assets On Unconsolidated Structured Entities",
        "terseLabel": "Total gains and losses on sale of assets",
        "documentation": "Gains and losses on sale of assets on unconsolidated structured entities such as RMBSs, CMBSs and ABSs and investment funds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnChangeInFairValueOfDerivatives",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on change in fair value of derivatives",
        "verboseLabel": "Net fair value change of derivatives",
        "totalLabel": "Total",
        "presentationGuidance": "Total"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "aeg_GainsLossesOnChangeOnInvestmentsInRealEstate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnChangeOnInvestmentsInRealEstate",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Change On Investments In Real Estate",
        "terseLabel": "Gains / (losses) on investments in real estate",
        "verboseLabel": "Net fair value change on investments in real estate",
        "documentation": "Gains (losses) on change on investments in real estate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainsLossesOnChangeOnInvestmentsInRealEstateAtFairValueNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnChangeOnInvestmentsInRealEstateAtFairValueNet",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Change On Investments In Real Estate At Fair Value Net",
        "verboseLabel": "Net fair value change on investments in real estate",
        "documentation": "Gains (losses) on change on investments in real estate at fair value net."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainsLossesOnDisposalOfFinancialAssetsMeasuredAtFVOCIMayBeReclassifiedSubsequentlyToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnDisposalOfFinancialAssetsMeasuredAtFVOCIMayBeReclassifiedSubsequentlyToProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 11.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Disposal Of Financial Assets Measured At FVOCI May Be Reclassified Subsequently To Profit Or Loss",
        "verboseLabel": "Realized gains / (losses) on disposal of financial assets (FVOCI)",
        "terseLabel": "Realized gains / (losses) on disposal of financial assets (FVOCI)",
        "documentation": "Gains Losses On Disposal Of Financial Assets Measured At FVOCI May Be Reclassified Subsequently To Profit Or Loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnDisposalsOfInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnDisposalsOfInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on disposals of investments",
        "verboseLabel": "Realized gains and losses on financial investments",
        "terseLabel": "Gain (loss) on disposal of Investment"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) on disposals of investments."
       }
      }
     },
     "auth_ref": [
      "r675"
     ]
    },
    "ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Foreign exchange gain (loss)",
        "terseLabel": "Net foreign currency gains and (losses)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Classes of financial instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r34",
      "r479",
      "r621"
     ]
    },
    "ifrs-full_GainsLossesOnFairValueAdjustmentInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnFairValueAdjustmentInvestmentProperty",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on fair value adjustment, investment property",
        "terseLabel": "Fair value gains / (losses)"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) from changes in the fair value of investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r101",
      "r511"
     ]
    },
    "aeg_GainsLossesOnFinancialAssetsAndLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsDesignated": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnFinancialAssetsAndLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsDesignated",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueGainsAndLossesRecognizedInTheIncomeStatementOnFinancialAssetsAndFinancialLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Financial Assets And Liabilities At Fair Value Through Profit Or Loss Classified As Designated",
        "terseLabel": "Designated",
        "documentation": "Gains losses on financial assets and liabilities at fair value through profit or loss classified as designated."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on financial assets at fair value through profit or loss",
        "terseLabel": "Debt securities and money market investments"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss]"
       }
      }
     },
     "auth_ref": [
      "r297",
      "r544"
     ]
    },
    "ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on financial assets at fair value through profit or loss, designated upon initial recognition or subsequently",
        "terseLabel": "Net Fair Value Change of Financial Investments at FVPL",
        "definitionGuidance": "Assets designated at FVPL"
       }
      }
     },
     "auth_ref": [
      "r297"
     ]
    },
    "ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on financial assets at fair value through profit or loss, mandatorily measured at fair value",
        "terseLabel": "Assets mandatorily measured at FVPL"
       }
      }
     },
     "auth_ref": [
      "r297"
     ]
    },
    "aeg_GainsLossesOnFinancialAssetsFromInsuranceContractsIssuedMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnFinancialAssetsFromInsuranceContractsIssuedMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Financial Assets From Insurance Contracts Issued Measured At Fair Value Through Other Comprehensive Income Before Tax",
        "verboseLabel": "Unrealized gains / (losses) on financial assets (FVOCI)",
        "documentation": "Gains losses on financial assets from insurance contracts issued measured at fair value through other comprehensive income before tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainsLossesOnFinancialAssetsFromNonInsuranceItemsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnFinancialAssetsFromNonInsuranceItemsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 10.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Financial Assets From Non Insurance Items Measured At Fair Value Through Other Comprehensive Income Before Tax",
        "verboseLabel": "Unrealized gains / (losses) on financial assets (FVOCI)",
        "documentation": "Gains losses on financial assets from non insurance items measured at fair value through other comprehensive income before tax."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfOtherComprehensiveIncomeDueToInsuranceInvestmentReturn",
       "weight": 1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) on financial assets measured at fair value through other comprehensive income, before tax",
        "definitionGuidance": "Unrealized gains / (losses) on financial assets (FVOCI)",
        "terseLabel": "Other",
        "presentationGuidance": "Other (i.e. FVOCI)"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) recognised in other comprehensive income on financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9, before tax, before reclassification adjustments. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r299",
      "r546",
      "r672"
     ]
    },
    "aeg_GainsLossesOnInvestmentsInRealEstate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesOnInvestmentsInRealEstate",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses On Investments In Real Estate",
        "terseLabel": "Gains and (losses) on investments in real estate",
        "documentation": "Gains losses on investments in real estate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in other comprehensive income, fair value measurement, assets",
        "terseLabel": "Total gains /losses in OCI"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) including exchange differences recognised in other comprehensive income on the fair value measurement of assets. [Refer: At fair value [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r180",
      "r585"
     ]
    },
    "ifrs-full_GainsLossesRecognisedInProfitOrLossExcludingExchangeDifferencesFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInProfitOrLossExcludingExchangeDifferencesFairValueMeasurementAssets",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in profit or loss excluding exchange differences, fair value measurement, assets",
        "terseLabel": "Net gains/losses transferred to income statement"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) excluding exchange differences, recognised in profit or loss, on the fair value measurement of assets. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r935"
     ]
    },
    "ifrs-full_GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in profit or loss, fair value measurement, assets",
        "terseLabel": "Total gains /losses in income statement"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) including exchange differences recognised in profit or loss on the fair value measurement of assets. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r179",
      "r584"
     ]
    },
    "ifrs-full_GainsLossesRecognisedInProfitOrLossFairValueMeasurementLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInProfitOrLossFairValueMeasurementLiabilities",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in profit or loss, fair value measurement, liabilities",
        "terseLabel": "Total gains /losses in income statement"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) including exchange differences recognised in profit or loss on the fair value measurement of liabilities. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r179",
      "r584"
     ]
    },
    "ifrs-full_GainsLossesRecognisedInProfitOrLossOnExchangeDifferencesFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GainsLossesRecognisedInProfitOrLossOnExchangeDifferencesFairValueMeasurementAssets",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains (losses) recognised in profit or loss on exchange differences, fair value measurement, assets",
        "terseLabel": "Foreign currency translation differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The gains (losses) on exchange differences, recognised in profit or loss, on the fair value measurement of assets. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r935"
     ]
    },
    "aeg_GainsLossesTransferredToIncomeStatementOnDisposalOfFinancialAssetsMeasuredAtFVOCI": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesTransferredToIncomeStatementOnDisposalOfFinancialAssetsMeasuredAtFVOCI",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 5.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains Losses Transferred To Income Statement On Disposal Of Financial Assets Measured At FVOCI",
        "terseLabel": "Realized gains / (losses) on disposal of financial assets (FVOCI)",
        "documentation": "Gains losses transferred to income statement on disposal of financial assets measured at FVOCI."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GainsLossesTransferredToTheIncomeStatement": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GainsLossesTransferredToTheIncomeStatement",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gains losses transferred to the income statement",
        "terseLabel": "Net (gains) / losses transferred to income statement",
        "documentation": "Gains losses transferred to the income statement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GbpEurMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GbpEurMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "GBP EUR [Member]",
        "terseLabel": "GBP/EUR [member]",
        "documentation": "GBP/EUR."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GbpUsdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GbpUsdMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "GBP USD [Member]",
        "terseLabel": "GBP/USD [member]",
        "documentation": "GBP/USD."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GeneralAccountEquityRealEstateAndOtherNonfixedIncomePortfolioLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GeneralAccountEquityRealEstateAndOtherNonfixedIncomePortfolioLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "General account equity, real estate and other non-fixed-income portfolio [line items]",
        "terseLabel": "General account equity, real estate and other non-fixed-income portfolio [line items]",
        "documentation": "General account equity, real estate and other non-fixed-income portfolio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GeneralModelAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GeneralModelAbstract",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "General Model [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GeneralModelMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GeneralModelMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "General Model [Member]",
        "terseLabel": "General model [member]",
        "documentation": "General model."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GeographicalAreasAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GeographicalAreasAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical areas [axis]",
        "terseLabel": "Geographical areas [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r375",
      "r683",
      "r715",
      "r721",
      "r760"
     ]
    },
    "ifrs-full_GeographicalAreasDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GeographicalAreasDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfRatingsDistributionOfGeneralAccountPortfoliosDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical areas [domain]",
        "terseLabel": "Geographical areas [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated geographical areas. It also represents the standard value for the 'Geographical areas' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r375",
      "r683",
      "r715",
      "r721",
      "r760"
     ]
    },
    "aeg_GeographicalConsolidationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GeographicalConsolidationMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical Consolidation [member]",
        "terseLabel": "Geographical Consolidation [member]",
        "documentation": "Geographical consolidation."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Goodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Goodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfGeographicallyCashGeneratingUnitsToGoodwillDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill",
        "terseLabel": "Goodwill"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r79",
      "r81",
      "r281",
      "r496",
      "r498",
      "r529",
      "r626"
     ]
    },
    "ifrs-full_GoodwillMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GoodwillMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill [member]",
        "terseLabel": "Goodwill [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for goodwill. [Refer: Goodwill]"
       }
      }
     },
     "auth_ref": [
      "r690",
      "r770"
     ]
    },
    "ifrs-full_GoodwillRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GoodwillRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill recognised as of acquisition date",
        "terseLabel": "Goodwill recognised as of acquisition date"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the business combination's acquisition date for goodwill. [Refer: Goodwill; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r724",
      "r725",
      "r772"
     ]
    },
    "aeg_GovernmentBondMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GovernmentBondMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Government Bond [member]",
        "terseLabel": "Government bonds [member]",
        "documentation": "Government bond."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Government bonds [member]",
        "terseLabel": "Government bonds [member]",
        "documentation": "Government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GovernmentBondsPerCountryOfRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GovernmentBondsPerCountryOfRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Government Bonds Per Country of Risk [Member]",
        "terseLabel": "Government bonds per country of risk [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossCarryingAmountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossCarryingAmountMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross carrying amount [member]",
        "terseLabel": "Carrying value [member]",
        "verboseLabel": "Gross carrying amount [member]"
       }
      }
     },
     "auth_ref": [
      "r13",
      "r89",
      "r105",
      "r112",
      "r281",
      "r331",
      "r337",
      "r465",
      "r505",
      "r514",
      "r519",
      "r568",
      "r572",
      "r736"
     ]
    },
    "aeg_GrossCashReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GrossCashReceivable",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross Cash Receivable",
        "terseLabel": "Gross cash receivable",
        "documentation": "Gross cash receivable."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
       "weight": -1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross financial assets set off against financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements",
        "verboseLabel": "Gross amounts set off in the statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial assets set off against financial liabilities when an entity: (a) currently has a legally enforceable right to set off the recognised amounts; and (b) intends either to settle on a net basis, or to realise the asset and settle the liability simultaneously. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r291",
      "r542"
     ]
    },
    "ifrs-full_GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross financial assets subject to offsetting, enforceable master netting arrangements or similar agreements",
        "verboseLabel": "Gross amounts"
       }
      },
      "en": {
       "role": {
        "documentation": "The gross amount of recognised financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r290"
     ]
    },
    "aeg_GrossFinancialLeverage": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GrossFinancialLeverage",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_Capitalisation",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross Financial Leverage",
        "terseLabel": "Gross Financial Leverage",
        "totalLabel": "Total gross financial leverage",
        "documentation": "Gross financial leverage."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_GrossFinancialLeverageRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GrossFinancialLeverageRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross Financial Leverage Ratio",
        "terseLabel": "Gross financial leverage ratio",
        "documentation": "Gross financial leverage ratio."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross financial liabilities set off against financial assets subject to offsetting, enforceable master netting arrangements or similar agreements",
        "verboseLabel": "Gross amounts set off in the statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities set off against financial assets when an entity: (a) currently has a legally enforceable right to set off the recognised amounts; and (b) intends either to settle on a net basis or to realise the asset and settle the liability simultaneously. [Refer: Financial assets; Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r291",
      "r542"
     ]
    },
    "ifrs-full_GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements",
        "verboseLabel": "Gross amounts"
       }
      },
      "en": {
       "role": {
        "documentation": "The gross amount of recognised financial liabilities that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r290"
     ]
    },
    "aeg_GrossReinsuranceAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "GrossReinsuranceAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Gross reinsurance Amount",
        "terseLabel": "Gross amount",
        "documentation": "Gross reinsurance Amount"
       }
      }
     },
     "auth_ref": []
    },
    "srt_GuarantorAndIssuerGuaranteedSecurityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "GuarantorAndIssuerGuaranteedSecurityAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Guarantor and Issuer, Guaranteed Security [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_HandlingAndClearingFees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HandlingAndClearingFees",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Handling And Clearing Fees",
        "negatedLabel": "Handling and clearing fees",
        "documentation": "Handling and clearing fees."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_HedgeFunds1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HedgeFunds1Member",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedge Funds 1 [member]",
        "terseLabel": "Hedge funds [member]",
        "documentation": "Hedge funds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_HedgedItemAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgedItemAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedged item, assets",
        "terseLabel": "Carrying amounts, Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedged item, recognised as an asset. [Refer: Hedged items [domain]]"
       }
      }
     },
     "auth_ref": [
      "r309",
      "r552"
     ]
    },
    "ifrs-full_HedgedItemLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgedItemLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedged item, liabilities",
        "terseLabel": "Carrying amounts, Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedged item, recognised as a liability. [Refer: Hedged items [domain]]"
       }
      }
     },
     "auth_ref": [
      "r309",
      "r552"
     ]
    },
    "ifrs-full_HedgedItemsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgedItemsAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedged items [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r316",
      "r557"
     ]
    },
    "ifrs-full_HedgedItemsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgedItemsDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedged items [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedged items. A hedged item can be a recognised asset or liability, an unrecognised firm commitment, a forecast transaction or a net investment in a foreign operation. The hedged item can be: (a) a single item; or (b) a group of items (subject to paragraphs 6.6.1\u20136.6.6 and B6.6.1\u2013B6.6.16 of IFRS 9). A hedged item can also be a component of such an item or group of items (see paragraphs 6.3.7 and B6.3.7\u2013B6.3.25 of IFRS 9). This member also represents the standard value for the 'Hedged items' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r316",
      "r557"
     ]
    },
    "aeg_HedgedOnPolicyHolderFundMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HedgedOnPolicyHolderFundMember",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedged On Policy Holder Fund [Member]",
        "terseLabel": "PH designated [member]",
        "documentation": "Hedged on policy holder fund."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgesOfNetInvestmentInForeignOperationsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedges of net investment in foreign operations [member]",
        "verboseLabel": "Net foreign investment hedges [member]",
        "definitionGuidance": "Net investment hedges [member]",
        "disclosureGuidance": "Net investment hedges [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedges of the entity's monetary items that are receivable from or payable to a foreign operation, for which settlement is neither planned nor likely to occur in the foreseeable future. A foreign operation is an entity that is a subsidiary, associate, joint venture or branch of a reporting entity, the activities of which are based or conducted in a country or currency other than those of the reporting entity."
       }
      }
     },
     "auth_ref": [
      "r97",
      "r308",
      "r316",
      "r319",
      "r551",
      "r557",
      "r560"
     ]
    },
    "ifrs-full_HedgingInstrumentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgingInstrumentAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instrument, assets",
        "terseLabel": "Assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedging instrument, recognised as an asset. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r305",
      "r548"
     ]
    },
    "ifrs-full_HedgingInstrumentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgingInstrumentLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instrument, liabilities",
        "terseLabel": "Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r305",
      "r548"
     ]
    },
    "ifrs-full_HedgingInstrumentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgingInstrumentsAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instruments [axis]",
        "terseLabel": "Hedging instruments [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r302",
      "r308",
      "r551"
     ]
    },
    "ifrs-full_HedgingInstrumentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "HedgingInstrumentsDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hedging instruments [domain]",
        "terseLabel": "Hedging instruments [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for hedging instruments. A hedging instrument can be a designated: (a) derivative measured at fair value through profit or loss, except for some written options (see paragraph B6.2.4 of IFRS 9); (b) non-derivative financial asset or non-derivative financial liability measured at fair value through profit or loss, unless it is a financial liability designated as at fair value through profit or loss for which the amount of its change in fair value that is attributable to changes in the credit risk of that liability is presented in other comprehensive income in accordance with paragraph 5.7.7 of IFRS 9. For a hedge of foreign currency risk, the foreign currency risk component of a non-derivative financial asset or a non-derivative financial liability may be designated as a hedging instrument provided that it is not an investment in an equity instrument for which an entity has elected to present changes in fair value in other comprehensive income in accordance with paragraph 5.7.5 of IFRS 9. This member also represents the standard value for the 'Hedging instruments' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r302",
      "r308",
      "r551"
     ]
    },
    "aeg_HoldingAndOtherActivitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HoldingAndOtherActivitiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Holding and other activities [member]",
        "terseLabel": "Holding and other activities [member]",
        "documentation": "Holding and other activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_HoldingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HoldingMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Holding [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_HousePriceIndex": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HousePriceIndex",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "House Price Index",
        "terseLabel": "House Price Index",
        "documentation": "House price index."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_HungaryGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HungaryGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hungary Government bonds [member]",
        "terseLabel": "Hungary government bonds [member]",
        "documentation": "Hungary Government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_HybridLeverage": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "HybridLeverage",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_GrossFinancialLeverage",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Hybrid Leverage",
        "totalLabel": "Hybrid leverage",
        "documentation": "Hybrid leverage."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IMDPayoutHedgeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IMDPayoutHedgeMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "IMD Payout Hedge [Member]",
        "verboseLabel": "IMD Payout Hedge [Member]",
        "documentation": "IMD Payout Hedge."
       }
      }
     },
     "auth_ref": []
    },
    "country_IN": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2025",
     "localname": "IN",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "INDIA"
       }
      }
     },
     "auth_ref": []
    },
    "dei_IcfrAuditorAttestationFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "IcfrAuditorAttestationFlag",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "ICFR Auditor Attestation Flag"
       }
      }
     },
     "auth_ref": [
      "r794",
      "r795",
      "r818"
     ]
    },
    "ifrs-full_IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Identifiable intangible assets recognised as of acquisition date"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount recognised as of the acquisition date for identifiable intangible assets acquired in a business combination. [Refer: Intangible assets other than goodwill; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r723",
      "r725",
      "r771"
     ]
    },
    "aeg_ImpactOfOtherComprehensiveIncomeDueToInsuranceInvestmentReturn": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpactOfOtherComprehensiveIncomeDueToInsuranceInvestmentReturn",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_NetInsuranceInvestmentReturnFromInsuranceAndInvestmentContract",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impact Of Other Comprehensive Income Due To Insurance Investment Return",
        "totalLabel": "OCI impacts",
        "documentation": "Impact of other comprehensive income due to insurance investment return."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_NetInsuranceInvestmentReturnFromInsuranceAndInvestmentContract",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impact Of Profit Or Loss Due To Insurance Investment Return",
        "totalLabel": "Profit or loss impacts",
        "documentation": "Impact of profit or loss due to insurance investment return."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpairmentChargesAndReversalsOnFinancialAssetsExcludingReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentChargesAndReversalsOnFinancialAssetsExcludingReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Charges And Reversals On Financial Assets, Excluding Receivables",
        "verboseLabel": "Impairment losses / (reversals) on financial assets, excluding receivables",
        "documentation": "Impairment (charges) / reversals on financial assets, excluding receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpairmentChargesAndReversalsOnNonfinancialAssetsAndReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentChargesAndReversalsOnNonfinancialAssetsAndReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Charges And Reversals On Non-Financial Assets And Receivables",
        "terseLabel": "Impairment losses / (reversals) on non-financial assets and receivables",
        "documentation": "Impairment charges / (reversals) on non-financial assets and receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpairmentLossOnDebtSecurity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentLossOnDebtSecurity",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": "ifrs-full_ImpairmentLossRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Loss on Debt Security",
        "terseLabel": "Debt securities measured at FVOCI",
        "documentation": "Impairment loss on debt security."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpairmentLossOnMortgageLoan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentLossOnMortgageLoan",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": "ifrs-full_ImpairmentLossRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Loss on Mortgage Loan",
        "terseLabel": "Mortgage loans measured at amortized cost",
        "documentation": "Impairment loss on mortgage loan."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail",
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss recognised in profit or loss",
        "definitionGuidance": "Impairment charge in P&amp;L",
        "terseLabel": "Impairment loss recognised in profit or loss",
        "verboseLabel": "Impairment (losses) on financial assets, excluding receivables",
        "totalLabel": "Net impairment charge in P&amp;L"
       }
      }
     },
     "auth_ref": [
      "r70",
      "r73",
      "r492"
     ]
    },
    "aeg_ImpairmentLossRecognizedPeriodIntangibleAssetsAndGoodwill": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentLossRecognizedPeriodIntangibleAssetsAndGoodwill",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Loss Recognized Period Intangible Assets And Goodwill",
        "terseLabel": "Impairment loss recognized period intangible assets and goodwill",
        "documentation": "Impairment loss recognized period intangible assets and goodwill."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
       "weight": -1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment loss (reversal of impairment loss) recognised in profit or loss",
        "presentationGuidance": "Impact of stage transfers on year-end ECL",
        "terseLabel": "Impairment (losses) / reversals",
        "negatedLabel": "Impairment (losses) / reversals"
       }
      }
     },
     "auth_ref": [
      "r434",
      "r677"
     ]
    },
    "aeg_ImpairmentLossReversalOfImpairmentLossRecognizedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentLossReversalOfImpairmentLossRecognizedInProfitOrLoss",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Loss Reversal Of Impairment Loss Recognized In Profit Or Loss",
        "negatedLabel": "Impairment (losses) / reversals",
        "documentation": "Impairment loss reversal of impairment loss recognized in profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpairmentLossesReversals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentLossesReversals",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Losses Reversals",
        "terseLabel": "Impairment (losses) / reversals",
        "documentation": "Impairment (losses) / reversals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ImpairmentLossesReversalsInOtherNetInvestmentResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ImpairmentLossesReversalsInOtherNetInvestmentResult",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment Losses Reversals In Other Net Investment Result",
        "terseLabel": "Impairment (losses) / reversals",
        "documentation": "Impairment losses reversals in other net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ImpairmentOfFinancialAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ImpairmentOfFinancialAssetsAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment of financial assets [axis]",
        "terseLabel": "Impairment of financial assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "ifrs-full_ImpairmentOfFinancialAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ImpairmentOfFinancialAssetsDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Impairment of financial assets [domain]",
        "terseLabel": "Impairment of financial assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Impairment of financial assets' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r603"
     ]
    },
    "aeg_InceaseDecreaseThroughInsuranceContractsDisposedOffDuringThePeriodLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InceaseDecreaseThroughInsuranceContractsDisposedOffDuringThePeriodLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Incease Decrease Through Insurance Contracts Disposed Off During The Period Liability Asset",
        "terseLabel": "Contracts disposed during the period",
        "documentation": "Increase decrease through insurance contracts disposed off during the period liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncludedInTheStatementOfIncomeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncludedInTheStatementOfIncomeAxis",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Included in the Statement of Income [Axis]",
        "terseLabel": "Included in the statement of income [axis]",
        "documentation": "Included in the statement of income axis."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncludedInTheStatementOfIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncludedInTheStatementOfIncomeMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Included in the Statement of Income [Member]",
        "terseLabel": "Included in the statement of income [member]",
        "documentation": "Included in the statement of income"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeExpensesFromReinsuranceContractsHeldOtherThanFinanceIncomeExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeExpensesFromReinsuranceContractsHeldOtherThanFinanceIncomeExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_InsuranceServiceResult",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income (expenses) from reinsurance contracts held, other than finance income (expenses)",
        "terseLabel": "Net income / (expenses) on reinsurance held",
        "verboseLabel": "Net income / (expenses) on reinsurance held"
       }
      }
     },
     "auth_ref": [
      "r266",
      "r665"
     ]
    },
    "aeg_IncomeFromSecuritiesLendingPrograms": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeFromSecuritiesLendingPrograms",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income from securities lending programs",
        "verboseLabel": "Income from security lending programs",
        "documentation": "Income from securities lending programs."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeLossBeforeTaxAndShareOfProfitLossOfAssociatesAndJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeLossBeforeTaxAndShareOfProfitLossOfAssociatesAndJointVentures",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_Revenue",
       "weight": 1.0,
       "order": 39.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Loss Before Tax And Share Of Profit Loss Of Associates And Joint Ventures",
        "terseLabel": "Result before share in profit / (loss) of joint ventures, associates and tax",
        "documentation": "Income loss before tax and share of profit loss of associates and joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeOrLossFromInsuranceAndInvestmentContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeOrLossFromInsuranceAndInvestmentContractsMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Or Loss From Insurance And Investment Contracts [Member]",
        "terseLabel": "Income or loss from Insurance and Investment contracts [member]",
        "documentation": "Income or loss from insurance and investment contracts member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeRecognisedOnInitialRecognitionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeRecognisedOnInitialRecognitionMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Recognised On Initial Recognition [Member]",
        "terseLabel": "Income recognised on initial recognition [member]",
        "documentation": "Income recognised on initial recognition member."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeStatementAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeStatementAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit or loss [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxEffectOnOperatingResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxEffectOnOperatingResult",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Effect On Operating Result",
        "terseLabel": "Tax effect",
        "documentation": "Income Tax Effect On Operating Result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxExpenseBenefitsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxExpenseBenefitsLineItems",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Expense Benefits [line items]",
        "terseLabel": "Income tax expense benefits [line items]",
        "documentation": "Income tax expense benefits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxExpenseBenefitsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxExpenseBenefitsTable",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Expense Benefits [table]",
        "terseLabel": "Income Tax Expense Benefits [table]",
        "documentation": "Income tax expense benefits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxExpenseContinuingAndDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxExpenseContinuingAndDiscontinuedOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": -1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Expense Continuing And Discontinued Operations",
        "negatedLabel": "Income tax (expense) / benefit",
        "documentation": "Income tax expense continuing and discontinued operations."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxExpenseContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxExpenseContinuingOperations",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperations",
       "weight": -1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax expense (income)",
        "negatedLabel": "Income tax (expense) / benefit",
        "negatedTotalLabel": "Income tax benefit / (charge)",
        "negatedTerseLabel": "Income tax (expense) or income",
        "verboseLabel": "Income tax expense or income"
       }
      }
     },
     "auth_ref": [
      "r2",
      "r5",
      "r6",
      "r49",
      "r166",
      "r363",
      "r456",
      "r459",
      "r460",
      "r668"
     ]
    },
    "aeg_IncomeTaxReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Receivables",
        "terseLabel": "Income tax receivable",
        "documentation": "Income tax receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatedToEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatedToEquityInstruments",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail": {
       "parentTag": "ifrs-full_CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Related To Equity Instruments",
        "negatedLabel": "Equity instruments",
        "documentation": "Income tax related to equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatedToOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatedToOther",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail": {
       "parentTag": "ifrs-full_CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRecognizedDirectlyInRetainedEarningsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax related to other",
        "negatedLabel": "Other",
        "documentation": "Income tax related to other."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to cash flow hedges included in other comprehensive income",
        "terseLabel": "Changes in cash flow hedging reserve"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r4",
      "r670"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income",
        "totalLabel": "Total income tax related to items of other comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r4",
      "r458",
      "r670"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Components Of Other Comprehensive Income That Will Be Reclassified To Loss Or Profit",
        "totalLabel": "Items that may be reclassified subsequently to profit or loss",
        "documentation": "Income tax relating to components of other comprehensive income that will be reclassified to loss or profit."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]",
        "terseLabel": "Items that may be reclassified subsequently to profit and loss:"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToLossOrProfit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToLossOrProfit",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Components Of Other Comprehensive Income That Will Not Be Reclassified To Loss Or Profit",
        "totalLabel": "Items that will not be reclassified to profit and loss",
        "documentation": "Income tax relating to components of other comprehensive income that will not be reclassified to loss or profit."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 15.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss",
        "negatedLabel": "Income tax relating to items that will not be reclassified"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income that will not be reclassified to profit or loss. [Refer: Income tax relating to components of other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r673"
     ]
    },
    "ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]",
        "terseLabel": "Items that will not be reclassified to profit and loss:"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatingToGainsLossesOnRevaluationOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToGainsLossesOnRevaluationOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Gains Losses On Revaluation Of Financial Assets At Fair Value Through Other Comprehensive Income",
        "terseLabel": "Unrealized (Gains) / losses on revaluation of FVOCI investments",
        "documentation": "Income tax relating to gains losses on revaluation of financial assets at fair value through other comprehensive income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatingToGainsLossesOnRevaluationOfInsuranceContractsThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToGainsLossesOnRevaluationOfInsuranceContractsThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Gains Losses On Revaluation Of Insurance Contracts Through Other Comprehensive Income",
        "terseLabel": "Revaluation reserve - Insurance contracts",
        "documentation": "income tax relating to gains losses on revaluation of insurance contracts through other comprehensive income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatingToGainsLossesOnRevaluationOfReinsuranceContractsThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToGainsLossesOnRevaluationOfReinsuranceContractsThroughOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Gains Losses On Revaluation Of Reinsurance Contracts Through Other Comprehensive Income",
        "verboseLabel": "Revaluation reserve - Reinsurance contracts",
        "documentation": "Income tax relating to gains losses on revaluation of reinsurance contracts through other comprehensive income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToHedgesOfNetInvestmentsInForeignOperationsOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToHedgesOfNetInvestmentsInForeignOperationsOfOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToLossOrProfit",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to hedges of net investments in foreign operations included in other comprehensive income",
        "terseLabel": "Movement in foreign currency translation and net foreign investment hedging reserve"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to hedges of net investments in foreign operations. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r4",
      "r670"
     ]
    },
    "aeg_IncomeTaxRelatingToInsuranceItemsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToInsuranceItemsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 9.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Insurance Items Of Other Comprehensive Income That Will Be Reclassified To Profit Or Loss",
        "negatedLabel": "Income tax relating to items that may be reclassified",
        "documentation": "Income tax relating to insurance items of other comprehensive income that will be reclassified to profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncomeTaxRelatingToItemsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncomeTaxRelatingToItemsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 18.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": -1.0,
       "order": 21.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Relating To Items Of Other Comprehensive IncomeThat Will Be Reclassified To Profit Or Loss",
        "negatedLabel": "Income tax relating to items that may be reclassified",
        "documentation": "Income tax relating to items of other comprehensive income that will be reclassified to profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail": {
       "parentTag": "aeg_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToLossOrProfit",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfIncomeTaxRelatedToComponentsOfOtherComprehensiveIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income tax relating to remeasurements of defined benefit plans included in other comprehensive income",
        "terseLabel": "Remeasurements of defined benefit plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans. [Refer: Other comprehensive income; Reserve of remeasurements of defined benefit plans; Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r4",
      "r670"
     ]
    },
    "ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncomeTaxesPaidRefundClassifiedAsOperatingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income taxes paid (refund), classified as operating activities",
        "negatedLabel": "Tax (paid)/ received"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash flows from income taxes paid or refunded, classified as operating activities. [Refer: Income taxes paid (refund)]"
       }
      }
     },
     "auth_ref": [
      "r121",
      "r695"
     ]
    },
    "aeg_IncreaseByFifteenPercentageOfGBPCurrenciesRelativeToEuroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseByFifteenPercentageOfGBPCurrenciesRelativeToEuroMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase By Fifteen Percentage Of GBP Currencies Relative To Euro [member]",
        "terseLabel": "Increase by 15% of GBP currencies relative to Euro [member]",
        "documentation": "Increase by fifteen percentage of GBP currencies relative to Euro."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseByFifteenPercentageOfNonEuroCurrenciesRelativeToEuroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseByFifteenPercentageOfNonEuroCurrenciesRelativeToEuroMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase By Fifteen Percentage Of Non Euro Currencies Relative To Euro [member]",
        "terseLabel": "Increase by 15% of non Euro currencies relative to Euro [member]",
        "documentation": "Increase by fifteen percentage of non Euro currencies relative to Euro."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseByFifteenPercentageOfUSDCurrenciesRelativeToEuroMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseByFifteenPercentageOfUSDCurrenciesRelativeToEuroMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase By Fifteen Percentage Of USD Currencies Relative To Euro [member]",
        "terseLabel": "Increase by 15% of USD currencies relative to Euro [member]",
        "documentation": "Increase by fifteen percentage of USD currencies relative to Euro."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseDueToChangeInValueOfUnderlyingAssetsForProductWithDirectParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseDueToChangeInValueOfUnderlyingAssetsForProductWithDirectParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Due To Change In Value Of Underlying Assets For Product With Direct Participating Features Liability Asset",
        "verboseLabel": "Change in fair value of the underlying assets",
        "documentation": "Increase decrease due to change in value of underlying assets for product with direct participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseDueToChangesInEstimatesRelatingToLossesOnUnderlyingOnerousContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseDueToChangesInEstimatesRelatingToLossesOnUnderlyingOnerousContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Due To Changes In Estimates Relating To Losses On Underlying Onerous Contracts",
        "terseLabel": "Changes in estimates that relate to losses and reversals of losses on underlying onerous contracts",
        "documentation": "Increase decrease due to changes in estimates relating to losses on underlying onerous contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseDueToFinanceIncomeExpenseInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseDueToFinanceIncomeExpenseInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Due To Finance Income Expense Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Insurance finance income / (expenses)",
        "documentation": "Increase decrease due to finance income expense insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInAllowanceForCreditLossesOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInAllowanceForCreditLossesOfFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Allowance For Credit Losses Of Financial Assets",
        "terseLabel": "Increase (decrease) in allowance for credit losses of financial assets",
        "documentation": "Increase (decrease) in allowance for credit losses of financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInAssetsGrossRevaluationChangesRecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInAssetsGrossRevaluationChangesRecognized",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Assets Gross Revaluation Changes Recognized",
        "terseLabel": "Gross revaluation",
        "documentation": "Increase decrease in assets gross revaluation changes recognized."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInAssetsOtherChanges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInAssetsOtherChanges",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Assets Other Changes",
        "terseLabel": "Other",
        "documentation": "Increase decrease in assets other changes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInAssetsTaxEffect": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInAssetsTaxEffect",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Assets Tax Effect",
        "terseLabel": "Tax effect",
        "documentation": "Increase decrease in assets tax effect."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInBorrowingCapacity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInBorrowingCapacity",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in borrowing capacity",
        "terseLabel": "Increase (decrease) in borrowing capacity",
        "documentation": "Increase (decrease) in borrowing capacity"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCashAndCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in cash and cash equivalents",
        "presentationGuidance": "Net increase / (decrease) in cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in cash and cash equivalents after the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r124",
      "r446"
     ]
    },
    "ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsDisclosureOfDetailedInformationOfCashFlowStatementDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in cash and cash equivalents before effect of exchange rate changes",
        "totalLabel": "Net increase / (decrease) in cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in cash and cash equivalents before the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r124",
      "r446"
     ]
    },
    "aeg_IncreaseDecreaseInCashFlowsFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInCashFlowsFromFinancingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) In Cash Flows From Financing Activities",
        "terseLabel": "Increase (decrease) in net cash flows from financing activities",
        "documentation": "Increase (decrease) in cash flows from finanacing activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInCashFlowsFromInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInCashFlowsFromInvestingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) In Cash Flows From Investing Activities",
        "terseLabel": "Increase (decrease) in net cash flows from investing activities",
        "documentation": "Increase (decrease) in cash flows from investing activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInCashFlowsFromOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInCashFlowsFromOperatingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) In Cash Flows From Operating Activities",
        "terseLabel": "Increase (decrease) in net cash flows from operating activities",
        "documentation": "Increase (decrease) in cash flows from operating activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInContractualServiceMarginDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithInScopeOfIfrs17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInContractualServiceMarginDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithInScopeOfIfrs17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Contractual Service Margin Due To Reasonably Possible Decrease In Risk Exposure That Arises From Contracts With in Scope Of IFRS 17 Insurance Contracts Issued Before Mitigation By Reinsurance Contracts Held",
        "terseLabel": "On CSM, gross of reinsurance decrease",
        "documentation": "Increase decrease in contractual service margin due to reasonably possible decrease in risk Exposure that arises from contracts with in scope of ifrs 17 insurance contracts issued before mitigation by reinsurance contracts held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInContractualServiceMarginDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithInScopeOfIfrs17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInContractualServiceMarginDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithInScopeOfIfrs17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Contractual Service Margin Due To Reasonably Possible Increase In Risk Exposure That Arises From Contracts With in Scope Of IFRS 17 Insurance Contracts Issued Before Mitigation By Reinsurance Contracts Held",
        "terseLabel": "On CSM, gross of reinsurance increase",
        "documentation": "Increase decrease in contractual service margin due to reasonably possible increase in risk Exposure that arises from contracts with in scope of ifrs 17 insurance contracts issued before mitigation by reinsurance contracts held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInContractualServiceMarginDuetoReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIfrs17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInContractualServiceMarginDuetoReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIfrs17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Contractual Service Margin DueTo Reasonably Possible decrease In Risk Exposure That Arises From Contracts Within Scope Of IFRS17",
        "terseLabel": "On CSM, net of reinsurance decrease",
        "documentation": "Increase decrease in contractual Service Margin due to reasonably possible decrease in risk exposure that arises from contracts with in scope of ifrs17."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInContractualServiceMarginDuetoReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIfrs17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInContractualServiceMarginDuetoReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIfrs17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Contractual Service Margin DueTo Reasonably Possible Increase In Risk Exposure That Arises From Contracts Within Scope Of IFRS17",
        "terseLabel": "On CSM, net of reinsurance increase",
        "documentation": "Increase decrease in contractual Service Margin due to reasonably possible increase in risk exposure that arises from contracts with in scope of ifrs17."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInCreditDerivativeFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCreditDerivativeFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in credit derivative, fair value",
        "terseLabel": "Increase/(Decrease) during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the fair value of a credit derivative. [Refer: Credit derivative, fair value]"
       }
      }
     },
     "auth_ref": [
      "r320"
     ]
    },
    "ifrs-full_IncreaseDecreaseInCreditDerivativeNominalAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInCreditDerivativeNominalAmount",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfNominalAmountAndFairValueOfCreditDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in credit derivative, nominal amount",
        "terseLabel": "Increase/(Decrease) during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the nominal amount of a credit derivative. [Refer: Credit derivative, nominal amount]"
       }
      }
     },
     "auth_ref": [
      "r320"
     ]
    },
    "ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption",
        "terseLabel": "Decrease in actuarial assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r31"
     ]
    },
    "ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption",
        "terseLabel": "Increase in actuarial assumptions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r31"
     ]
    },
    "ifrs-full_IncreaseDecreaseInEquityDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInEquityDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in equity due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17",
        "terseLabel": "On shareholders' equity, net of reinsurance decrease"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity that would have been caused by a reasonably possible decrease in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252",
      "r253"
     ]
    },
    "ifrs-full_IncreaseDecreaseInEquityDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInEquityDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in equity due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17, insurance contracts issued before mitigation by reinsurance contracts held",
        "terseLabel": "On shareholders' equity, gross of reinsurance decrease"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity, before mitigation by reinsurance contracts held, that would have been caused by a reasonably possible decrease in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252"
     ]
    },
    "ifrs-full_IncreaseDecreaseInEquityDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInEquityDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in equity due to reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17",
        "terseLabel": "On shareholders' equity, net of reinsurance increase"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity that would have been caused by a reasonably possible increase in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252",
      "r253"
     ]
    },
    "ifrs-full_IncreaseDecreaseInEquityDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInEquityDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in equity due to reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17, insurance contracts issued before mitigation by reinsurance contracts held",
        "terseLabel": "On shareholders' equity, gross of reinsurance increase"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity, before mitigation by reinsurance contracts held, that would have been caused by a reasonably possible increase in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252"
     ]
    },
    "aeg_IncreaseDecreaseInEstimatedLossesAndReversalOnOnusContractsInsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInEstimatedLossesAndReversalOnOnusContractsInsuranceContractLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Estimated Losses And Reversal On Onus Contracts Insurance Contract Liability Asset",
        "terseLabel": "Changes in estimates that relate to losses and reversals of losses on underlying onerous contracts",
        "documentation": "Increase decrease in estimated losses and reversal on onus contracts insurance contract liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInFairValueOfUnderlyingAssetsOfProductsWithDirectParticipatingFeaturesInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInFairValueOfUnderlyingAssetsOfProductsWithDirectParticipatingFeaturesInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Fair Value Of Underlying Assets Of Products With Direct Participating Features Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Change in fair value of the underlying assets of products with direct participating features",
        "documentation": "Increase decrease in fair value of underlying assets of products with direct participating features insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInInsuranceContractsThatRelateToFutureServiceInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInInsuranceContractsThatRelateToFutureServiceInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Insurance Contracts That Relate To Future Service Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Changes that relate to future service",
        "documentation": "Increase decrease in insurance contracts that relate to future service insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseInProfitLossDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInProfitLossDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in profit (loss) due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17",
        "terseLabel": "On net result, net of reinsurance decrease"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in profit (loss) that would have been caused by a reasonably possible decrease in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252",
      "r253"
     ]
    },
    "ifrs-full_IncreaseDecreaseInProfitLossDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInProfitLossDueToReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in profit (loss) due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17, insurance contracts issued before mitigation by reinsurance contracts held",
        "terseLabel": "On net result, gross of reinsurance increase"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in profit (loss), before mitigation by reinsurance contracts held, that would have been caused by a reasonably possible decrease in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252"
     ]
    },
    "ifrs-full_IncreaseDecreaseInProfitLossDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInProfitLossDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in profit (loss) due to reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17",
        "terseLabel": "On net result, net of reinsurance increase"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in profit (loss) that would have been caused by a reasonably possible increase in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252",
      "r253"
     ]
    },
    "ifrs-full_IncreaseDecreaseInProfitLossDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseInProfitLossDueToReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17InsuranceContractsIssuedBeforeMitigationByReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) in profit (loss) due to reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17, insurance contracts issued before mitigation by reinsurance contracts held",
        "terseLabel": "On net result, gross of reinsurance decrease"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in profit (loss), before mitigation by reinsurance contracts held, that would have been caused by a reasonably possible increase in the risk variable that arises from contracts within the scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r252"
     ]
    },
    "aeg_IncreaseDecreaseInProfitOrLossAndOtherComprehensiveIncomeDueToChangesInReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInProfitOrLossAndOtherComprehensiveIncomeDueToChangesInReinsuranceContractsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) In Profit Or Loss And Other Comprehensive Income Due To Changes In Reinsurance Contracts Held",
        "terseLabel": "Total changes in the profit or loss and OCI",
        "documentation": "Increase (decrease) in profit or loss and other comprehensive income due to changes in reinsurance contracts held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInReconciliationOfDebtFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInReconciliationOfDebtFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Reconciliation Of Debt From Financing Activities",
        "terseLabel": "Addition",
        "documentation": "Increase decrease in reconciliation of debt from financing activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseInSolvencyRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseInSolvencyRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease In Solvency Ratio",
        "terseLabel": "Increase Decrease In Solvency Ratio",
        "documentation": "Increase decrease in solvency ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughAcquisitionCostsPaidInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughAcquisitionCostsPaidInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Acquisition Costs Paid Insurance Contracts Liability Asset",
        "terseLabel": "Acquisition costs paid",
        "documentation": "Increase decrease through acquisition costs paid insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughAcquisitionCostsPaidInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughAcquisitionCostsPaidInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Acquisition Costs Paid Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Acquisition costs paid",
        "documentation": "Increase decrease through acquisition costs paid insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughAdditionalItemsNecessaryToUnderstandChangeInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughAdditionalItemsNecessaryToUnderstandChangeInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through additional items necessary to understand change, insurance contracts liability (asset)",
        "verboseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from additional items that may be necessary to understand the change in the net carrying amount of the insurance contracts. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r228"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughAmortisationOfInsuranceAcquisitionCashFlowsInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughAmortisationOfInsuranceAcquisitionCashFlowsInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through amortisation of insurance acquisition cash flows, insurance contracts liability (asset)",
        "terseLabel": "Amortization of insurance acquisition cash flows"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from amortisation of insurance acquisition cash flows. [Refer: Insurance contracts liability (asset); Increase (decrease) through insurance acquisition cash flows, insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r208"
     ]
    },
    "aeg_IncreaseDecreaseThroughAmortizationOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughAmortizationOfFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Amortization Of Financial Assets",
        "terseLabel": "Amortizations through income statement",
        "documentation": "Increase decrease through amortization of financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughAmountsReceivedReinsuranceInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughAmountsReceivedReinsuranceInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Amounts Received Reinsurance Insurance Contracts Liability Asset",
        "terseLabel": "Amounts received",
        "documentation": "Increase decrease through amounts received reinsurance insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through business combinations, deferred tax liability (asset)",
        "terseLabel": "Acquisitions / Additions"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in deferred tax liability (asset) resulting from business combinations. [Refer: Deferred tax liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r904"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughCashFlowsInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughCashFlowsInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through cash flows, insurance contracts liability (asset)",
        "terseLabel": "Cash flows",
        "verboseLabel": "Cash flows",
        "presentationGuidance": "Cash flow - contracts disposed"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from cash flows. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r225"
     ]
    },
    "aeg_IncreaseDecreaseThroughCashFlowsInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughCashFlowsInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Cash Flows Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Cash flows",
        "documentation": "Increase decrease through cash flows insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughCashFlowsInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughCashFlowsInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Cash Flows Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Cash flows",
        "documentation": "Increase decrease through cash flows investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughCashFlowsReinsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughCashFlowsReinsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Cash Flows Reinsurance Contracts Liability Asset",
        "terseLabel": "Cash flows of reInsurance",
        "documentation": "Increase decrease through cash flows reinsurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughChangeInEstimatesThatAdjustOnerousContractsInsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangeInEstimatesThatAdjustOnerousContractsInsuranceContractLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Change In Estimates That Adjust Onerous Contracts Insurance Contract Liability Asset",
        "verboseLabel": "Changes in estimates that adjust onerous contracts",
        "documentation": "Increase decrease through change in estimates that adjust onerous contracts insurance contract liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughChangeInEstimatesThatAdjustOnerousContractsInsuranceContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangeInEstimatesThatAdjustOnerousContractsInsuranceContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Change In Estimates That Adjust Onerous Contracts Insurance Contract With Discretionary Participating Features Liability Asset",
        "verboseLabel": "Changes in estimates that adjust onerous contracts",
        "documentation": "Increase decrease through change in estimates that adjust onerous contracts insurance contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughChangeInRiskAdjustmentForNonfinancialRiskThatDoesNotRelateToFutureOrPastServiceInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangeInRiskAdjustmentForNonfinancialRiskThatDoesNotRelateToFutureOrPastServiceInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through change in risk adjustment for non-financial risk that does not relate to future or past service, insurance contracts liability (asset)",
        "verboseLabel": "Release of risk adjustment"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from the change in the risk adjustment for non-financial risk that does not relate to future service or past service. [Refer: Insurance contracts liability (asset); Risk adjustment for non-financial risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r218"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughChangesInEstimatesThatAdjustContractualServiceMarginInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesInEstimatesThatAdjustContractualServiceMarginInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes in estimates that adjust contractual service margin, insurance contracts liability (asset)",
        "terseLabel": "Changes in estimates that adjust contractual service margin",
        "verboseLabel": "Changes in estimates that adjust CSM"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from changes in estimates that adjust the contractual service margin. [Refer: Insurance contracts liability (asset); Contractual service margin [member]]"
       }
      }
     },
     "auth_ref": [
      "r214"
     ]
    },
    "aeg_IncreaseDecreaseThroughChangesInEstimatesThatAdjustContractualServiceMarginInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesInEstimatesThatAdjustContractualServiceMarginInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes In Estimates That Adjust Contractual Service Margin Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Changes in estimates that adjust contractual service margin",
        "documentation": "Increase decrease through changes in estimates that adjust contractual service margin insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes in foreign exchange rates, net defined benefit liability (asset)",
        "terseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r27"
     ]
    },
    "aeg_IncreaseDecreaseThroughChangesInForeignExchangeRatesOfInvestmentsInAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesInForeignExchangeRatesOfInvestmentsInAssociates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes In Foreign Exchange Rates Of Investments In Associates",
        "terseLabel": "Net exchange difference",
        "documentation": "Increase (decrease) through changes in foreign exchange rates of investments in associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughChangesInForeignExchangeRatesOfInvestmentsInJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesInForeignExchangeRatesOfInvestmentsInJointVentures",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes In Foreign Exchange Rates Of Investments In Joint Ventures",
        "terseLabel": "Net exchange difference",
        "documentation": "Increase Decrease Through Changes In Foreign Exchange Rates Of Investments In Joint Ventures."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughChangesInInterestAccrualFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesInInterestAccrualFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes In Interest Accrual Financial Assets",
        "terseLabel": "Changes in interest accrual",
        "documentation": "Increase decrease through changes in interest accrual financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughChangesInInterestRatesAndFinancialResultsInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesInInterestRatesAndFinancialResultsInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes In Interest Rates And Financial Results Insurance Contracts Liability Asset",
        "terseLabel": "Changes in interest rates and other financial assumptions",
        "documentation": "Increase decrease through changes in interest rates and financial results insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughChangesInModelsOrRiskParametersFinancialAssetsAllowanceAccountForCreditLossesOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesInModelsOrRiskParametersFinancialAssetsAllowanceAccountForCreditLossesOfFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes In Models Or Risk Parameters Financial Assets Allowance Account For Credit Losses Of Financial Assets",
        "terseLabel": "Change in models",
        "documentation": "Increase decrease through changes in models or risk parameters financial assets allowance account for credit losses of financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity",
        "terseLabel": "Change in ownership non-controlling interest"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity through changes in ownership interests in subsidiaries that do not result in loss of control. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r612"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughChangesThatRelateToCurrentServiceInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesThatRelateToCurrentServiceInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes that relate to current service, insurance contracts liability (asset)",
        "terseLabel": "Revenue recognised for incurred policyholder tax expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from changes that relate to current service. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r220"
     ]
    },
    "aeg_IncreaseDecreaseThroughChangesThatRelateToCurrentServiceInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughChangesThatRelateToCurrentServiceInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Changes That Relate To Current Service Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Changes that relate to current service",
        "documentation": "Increase decrease through changes that relate to current service insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughChangesThatRelateToFutureServiceInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesThatRelateToFutureServiceInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes that relate to future service, insurance contracts liability (asset)",
        "verboseLabel": "Changes that relate to future service"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from changes that relate to future service. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r210",
      "r216"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughChangesThatRelateToPastServiceInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughChangesThatRelateToPastServiceInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through changes that relate to past service, insurance contracts liability (asset)",
        "verboseLabel": "Changes that relate to past service"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from changes that relate to past service, ie changes in fulfilment cash flows relating to incurred claims. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r209",
      "r221"
     ]
    },
    "aeg_IncreaseDecreaseThroughClaimsBenefitsAndExpensesPaidInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughClaimsBenefitsAndExpensesPaidInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Claims Benefits And Expenses Paid Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Claims, benefits and expenses paid",
        "documentation": "Increase decrease through claims benefits and expenses paid insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughContractsDisposedOffDuringThePeriodLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughContractsDisposedOffDuringThePeriodLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Contracts Disposed Off During The Period Liability Asset",
        "verboseLabel": "Contracts disposed during the period",
        "documentation": "Increase decrease through contracts disposed off during the period liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughDisposalOfBusinessDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughDisposalOfBusinessDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Disposal Of Business Deferred Tax Liability Asset",
        "terseLabel": "Disposal of a business",
        "documentation": "Increase decrease through disposal of business deferred tax liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughDisposalOfBusinessDuringThePeriodInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughDisposalOfBusinessDuringThePeriodInsuranceContractsLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Disposal Of Business During The Period Insurance Contracts Liability Asset",
        "terseLabel": "Disposal of a business",
        "documentation": "Increase decrease through disposal of business during the period insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughEarningsReleasedToMeetContractualServiceMarginInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughEarningsReleasedToMeetContractualServiceMarginInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Earnings Released To Meet Contractual Service Margin Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Earnings released from contractual service margin",
        "documentation": "Increase decrease through earnings released to meet contractual service margin insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughEffectOfChangesInRiskOfNonperformanceByIssuerOfReinsuranceContractsHeldInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughEffectOfChangesInRiskOfNonperformanceByIssuerOfReinsuranceContractsHeldInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through effect of changes in risk of non-performance by issuer of reinsurance contracts held, insurance contracts liability (asset)",
        "verboseLabel": "Changes in risk of\u00a0non-performance\u00a0of reinsurers",
        "terseLabel": "Effect of changes in risk of\u00a0non-performance\u00a0of reinsurers"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from the effect of changes in the risk of non-performance by the issuer of reinsurance contracts held. [Refer: Insurance contracts liability (asset); Reinsurance contracts held [member]]"
       }
      }
     },
     "auth_ref": [
      "r226"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughEffectsOfContractsInitiallyRecognisedInPeriodInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughEffectsOfContractsInitiallyRecognisedInPeriodInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through effects of contracts initially recognised in period, insurance contracts liability (asset)",
        "verboseLabel": "Issued non-onerous contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from the effects of contracts initially recognised in the period. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r215",
      "r239"
     ]
    },
    "aeg_IncreaseDecreaseThroughEffectsOfContractsInitiallyRecognizedInPeriodInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughEffectsOfContractsInitiallyRecognizedInPeriodInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Effects Of Contracts Initially Recognized In Period Insurance Contracts Liability Asset",
        "verboseLabel": "New contracts recognized",
        "documentation": "Increase decrease through effects of contracts initially recognized in period insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughEffectsOfGroupsOfOnerousContractsInitiallyRecognisedInPeriodInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughEffectsOfGroupsOfOnerousContractsInitiallyRecognisedInPeriodInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through effects of groups of onerous contracts initially recognised in period, insurance contracts liability (asset)",
        "definitionGuidance": "Loss on onerous contracts",
        "presentationGuidance": "Issued onerous contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from the effects of groups of onerous contracts initially recognised in the period. An insurance contract is onerous at the date of initial recognition if the fulfilment cash flows allocated to the contract, any previously recognised acquisition cash flows and any cash flows arising from the contract at the date of initial recognition in total are a net outflow. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r240"
     ]
    },
    "aeg_IncreaseDecreaseThroughEffectsOfGroupsOfOnerousContractsInitiallyRecognizedInPeriodInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughEffectsOfGroupsOfOnerousContractsInitiallyRecognizedInPeriodInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Effects Of Groups Of Onerous Contracts Initially Recognized In Period Insurance Contracts Liability Asset",
        "terseLabel": "Onerous contract losses (and reversals)",
        "documentation": "Increase decrease through effects of groups of onerous contracts initially recognized in period insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughEffectsOfInsuranceContractsLiabilityAssetAggregateAmountRecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughEffectsOfInsuranceContractsLiabilityAssetAggregateAmountRecognized",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Effects Of Insurance Contracts Liability Asset Aggregate Amount Recognized",
        "terseLabel": "Total",
        "documentation": "Increase decrease through effects of insurance contracts liability asset aggregate amount recognized."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughExperienceAdjustmentOnCurrentServiceInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughExperienceAdjustmentOnCurrentServiceInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Experience Adjustment On Current Service Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Experience adjustments on current service",
        "documentation": "Increase decrease through experience adjustment on current service insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughExperienceAdjustmentsInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughExperienceAdjustmentsInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through experience adjustments, insurance contracts liability (asset)",
        "verboseLabel": "Experience adjustments on current service"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from experience adjustments, excluding amounts related to the risk adjustment for non-financial risk included in paragraph 104(b)(ii) of IFRS 17. Experience adjustment is a difference between: (a)\u00a0for premium receipts (and any related cash flows such as insurance acquisition cash flows and insurance premium taxes) - the estimate at the beginning of the period of the amounts expected in the period and the actual cash flows in the period; or (b) for insurance service expenses (excluding insurance acquisition expenses) - the estimate at the beginning of the period of the amounts expected to be incurred in the period and the actual amounts incurred in the period. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r219"
     ]
    },
    "aeg_IncreaseDecreaseThroughExperienceAdjustmentsOnClaimsIncurredInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughExperienceAdjustmentsOnClaimsIncurredInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Experience Adjustments On Claims Incurred Insurance Contracts Liability Asset",
        "terseLabel": "Experience adjustments on claims incurred",
        "documentation": "Increase decrease through experience adjustments on claims incurred insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughForeignExchangeFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughForeignExchangeFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through foreign exchange, financial assets",
        "verboseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in financial assets resulting from foreign exchange. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r730",
      "r749",
      "r773"
     ]
    },
    "aeg_IncreaseDecreaseThroughForeignExchangeTranslationInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughForeignExchangeTranslationInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Foreign Exchange Translation Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Net exchange differences",
        "documentation": "Increase decrease through foreign exchange translation investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughIncurredClaimsAndOtherIncurredInsuranceServiceExpensesInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughIncurredClaimsAndOtherIncurredInsuranceServiceExpensesInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through incurred claims and other incurred insurance service expenses, insurance contracts liability (asset)",
        "terseLabel": "Incurred claims and other insurance service expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from incurred claims and other incurred insurance service expenses. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r207"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughIncurredClaimsPaidAndOtherInsuranceServiceExpensesPaidForInsuranceContractsIssuedExcludingInsuranceAcquisitionCashFlowsInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughIncurredClaimsPaidAndOtherInsuranceServiceExpensesPaidForInsuranceContractsIssuedExcludingInsuranceAcquisitionCashFlowsInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through incurred claims paid and other insurance service expenses paid for insurance contracts issued excluding insurance acquisition cash flows, insurance contracts liability (asset)",
        "verboseLabel": "Claims, benefits and expenses paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from incurred claims paid and other insurance service expenses paid for insurance contracts issued, excluding insurance acquisition cash flows. [Refer: Insurance contracts liability (asset); Increase (decrease) through insurance acquisition cash flows, insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r224"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughIncurredClaimsRecoveredAndOtherInsuranceServiceExpensesRecoveredUnderReinsuranceContractsHeldInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughIncurredClaimsRecoveredAndOtherInsuranceServiceExpensesRecoveredUnderReinsuranceContractsHeldInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through incurred claims recovered and other insurance service expenses recovered under reinsurance contracts held, insurance contracts liability (asset)",
        "terseLabel": "Net expenses from reinsurance contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from incurred claims recovered and other insurance service expenses recovered under reinsurance contracts held. [Refer: Insurance contracts liability (asset); Reinsurance contracts held [member]]"
       }
      }
     },
     "auth_ref": [
      "r224"
     ]
    },
    "aeg_IncreaseDecreaseThroughInsuranceClaimAndExpensesInsuranceContractsLiabilityAssetInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceClaimAndExpensesInsuranceContractsLiabilityAssetInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Claim And Expenses Insurance Contracts Liability Asset Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Incurred claims and expenses",
        "documentation": "Increase decrease through insurance claim and expenses insurance contracts liability asset investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughInsuranceContractsThroughTransferToDisposalGroups": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceContractsThroughTransferToDisposalGroups",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Contracts Through Transfer To Disposal Groups",
        "terseLabel": "Transfers to disposal groups",
        "documentation": "Increase decrease through insurance contracts through transfer to disposal groups."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughInsuranceContractsThroughTransferToDisposalOfBusiness": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceContractsThroughTransferToDisposalOfBusiness",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Contracts Through Transfer To Disposal Of Business",
        "terseLabel": "Disposal of a business",
        "documentation": "Increase decrease through insurance contracts through transfer to disposal of business."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughInsuranceFinanceIncomeInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceFinanceIncomeInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Finance Income Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Insurance finance (income) / expenses",
        "documentation": "Increase decrease through insurance finance income investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughInsuranceFinanceIncomeOrExpensesInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughInsuranceFinanceIncomeOrExpensesInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through insurance finance income or expenses, insurance contracts liability (asset)",
        "terseLabel": "Insurance finance (income) / expenses",
        "definitionGuidance": "Insurance finance income / (expenses)",
        "verboseLabel": "Insurance finance (income) / expenses"
       }
      }
     },
     "auth_ref": [
      "r227"
     ]
    },
    "aeg_IncreaseDecreaseThroughInsuranceOnerousContractLossesAndReversalsInsuranceContractsLiabilityAssetInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceOnerousContractLossesAndReversalsInsuranceContractsLiabilityAssetInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Onerous Contract Losses And Reversals Insurance Contracts Liability Asset Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Onerous contract losses (and reversals)",
        "documentation": "Increase decrease through insurance onerous contract losses and reversals insurance contracts liability asset investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughInsuranceRevenueInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughInsuranceRevenueInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through insurance revenue, insurance contracts liability (asset)",
        "terseLabel": "Insurance revenue"
       }
      }
     },
     "auth_ref": [
      "r206"
     ]
    },
    "aeg_IncreaseDecreaseThroughInsuranceRevenueInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceRevenueInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Revenue Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Insurance revenue",
        "documentation": "Increase decrease through insurance revenue investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughInsuranceServiceExpensesInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughInsuranceServiceExpensesInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "ifrs-full_InsuranceFinanceIncomeExpenses",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through insurance service expenses, insurance contracts liability (asset)",
        "verboseLabel": "Insurance finance expenses from PAA contracts",
        "terseLabel": "Insurance service expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from insurance service expenses. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r211"
     ]
    },
    "aeg_IncreaseDecreaseThroughInsuranceServiceExpensesInsuranceContractsLiabilityAssetInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceServiceExpensesInsuranceContractsLiabilityAssetInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase decrease through insurance service expenses, insurance contracts liability asset investment contract with discretionary participating features liability asset",
        "terseLabel": "Insurance service expenses",
        "documentation": "Increase (decrease) through insurance service expenses, insurance contracts liability (asset) investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughInsuranceServiceExpensesReinsuranceHeldContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceServiceExpensesReinsuranceHeldContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Service Expenses Reinsurance Held Contracts Liability Asset",
        "terseLabel": "Net income/expenses of reinsurance held",
        "documentation": "Increase decrease through insurance service expenses reinsurance held contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughInsuranceServiceResultInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughInsuranceServiceResultInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through insurance service result, insurance contracts liability (asset)",
        "terseLabel": "Insurance service result",
        "verboseLabel": "Insurance service result"
       }
      }
     },
     "auth_ref": [
      "r213",
      "r222"
     ]
    },
    "aeg_IncreaseDecreaseThroughInsuranceServiceResultInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInsuranceServiceResultInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Insurance Service Result Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Insurance service result",
        "documentation": "Increase decrease through insurance service result investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughInterestAccretedOnInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInterestAccretedOnInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Interest Accreted On Insurance Contracts Liability Asset",
        "terseLabel": "Interest accreted to insurance contracts",
        "documentation": "Increase decrease through interest accreted on insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughInvestmentComponentsExcludedFromInsuranceRevenueAndInsuranceServiceExpensesInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughInvestmentComponentsExcludedFromInsuranceRevenueAndInsuranceServiceExpensesInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through investment components excluded from insurance revenue and insurance service expenses, insurance contracts liability (asset)",
        "terseLabel": "Investment components"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from investment components excluded from insurance revenue and insurance service expenses (combined with refunds of premiums unless refunds of premiums are presented as part of the cash flows in the period described in paragraph 105(a)(i) of IFRS 17). [Refer: Description of approach used to determine investment components; Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r212"
     ]
    },
    "aeg_IncreaseDecreaseThroughInvestmentComponentsExcludedFromInsuranceRevenueAndInsuranceServiceExpensesInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughInvestmentComponentsExcludedFromInsuranceRevenueAndInsuranceServiceExpensesInvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Investment Components Excluded From Insurance Revenue And Insurance Service Expenses Investment Contract With Discretionary Participating Features Liability Asset",
        "terseLabel": "Investment components",
        "documentation": "Increase decrease through investment components excluded from insurance revenue and insurance service expenses investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughLiabilityForIncurredClaimsInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughLiabilityForIncurredClaimsInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Liability For Incurred Claims Insurance Contracts Liability Asset",
        "terseLabel": "Adjustments for incurred claims",
        "documentation": "Increase decrease through liability for incurred claims insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughModificationOfContractualCashFlowsFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughModificationOfContractualCashFlowsFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through modification of contractual cash flows, financial assets",
        "terseLabel": "Modification of financial assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in financial assets resulting from the modification of contractual cash flows. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r732",
      "r775"
     ]
    },
    "aeg_IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialsAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialsAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Net Exchange Differences Allowance Account For Credit Losses Of Financials Assets",
        "verboseLabel": "Net exchange differences",
        "documentation": "Increase decrease through net exchange differences allowance account for credit losses of financials assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, deferred tax liability (asset)",
        "terseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r904"
     ]
    },
    "aeg_IncreaseDecreaseThroughNetExchangeDifferencesInsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesInsuranceContractLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Net Exchange Differences Insurance Contract Liability Asset",
        "verboseLabel": "Net exchange differences",
        "terseLabel": "Net exchange differences",
        "documentation": "Increase decrease through net exchange differences insurance contract liability asset"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughNetExchangeDifferencesInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Net Exchange Differences Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Net exchange differences",
        "documentation": "Increase decrease through net exchange differences insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, intangible assets and goodwill",
        "terseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill]"
       }
      }
     },
     "auth_ref": [
      "r924"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesInvestmentProperty",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, investment property",
        "terseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in investment property resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r102",
      "r108"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, other provisions",
        "terseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r921"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesRightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughNetExchangeDifferencesRightofuseAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through net exchange differences, right-of-use assets",
        "terseLabel": "Net exchange differences"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in right-of-use assets resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r907"
     ]
    },
    "aeg_IncreaseDecreaseThroughNetForeignExchangeDifferencesInsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNetForeignExchangeDifferencesInsuranceContractLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Net Foreign Exchange Differences Insurance Contract Liability Asset",
        "terseLabel": "Net exchange differences",
        "documentation": "Increase decrease through net foreign exchange differences insurance contract liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughNetForeignExchangeDifferencesReinsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNetForeignExchangeDifferencesReinsuranceContractLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Net Foreign Exchange Differences Reinsurance Contract Liability Asset",
        "terseLabel": "Net exchange differences of reinsurance",
        "documentation": "Increase decrease through net foreign exchange differences reinsurance contract liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughNewContractsIssuedNonOnerousInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNewContractsIssuedNonOnerousInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through New Contracts Issued Non Onerous Insurance Contracts Liability Asset",
        "terseLabel": "New contracts issued \u2013\u00a0non-onerous",
        "documentation": "Increase decrease through new contracts issued non onerous insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughNewContractsIssuedOnerousInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughNewContractsIssuedOnerousInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through New Contracts Issued Onerous Insurance Contracts Liability Asset",
        "terseLabel": "New contracts issued \u2013 onerous",
        "documentation": "Increase decrease through new contracts issued onerous insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughOtherChangesInsuranceContractsLiabiityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherChangesInsuranceContractsLiabiityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Changes Insurance Contracts Liabiity Asset",
        "terseLabel": "Other movements",
        "verboseLabel": "Other",
        "documentation": "Increase decrease through other changes insurance contracts liabiity asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughOtherChangesInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherChangesInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Changes Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Other",
        "documentation": "Increase decrease through other changes insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughOtherChangesReinsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherChangesReinsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Changes Reinsurance Contracts Liability Asset",
        "terseLabel": "Other movements of reinsurance",
        "documentation": "Increase decrease through other changes reinsurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughOtherMovementsAllowanceForCreditLossesOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherMovementsAllowanceForCreditLossesOfFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfMovementsInTheExpectedCreditLossesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Movements Allowance For Credit Losses Of Financial Assets",
        "terseLabel": "Other movements",
        "documentation": "Increase (decrease) through other movements allowance for credit losses of financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughOtherMovementsFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughOtherMovementsFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through other movements, financial assets",
        "terseLabel": "Other movements"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in financial assets resulting from other movements. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r730",
      "r734",
      "r749",
      "r773",
      "r777"
     ]
    },
    "aeg_IncreaseDecreaseThroughOtherMovementsInsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherMovementsInsuranceContractLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Movements Insurance Contract Liability Asset",
        "verboseLabel": "Other movements",
        "documentation": "Increase decrease through other movements insurance contract liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughOtherMovementsInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherMovementsInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Movements Insurance Contracts With Discretionary Participating Features Liability Asset",
        "verboseLabel": "Other",
        "documentation": "Increase decrease through other movements insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughOtherRightOfUseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughOtherRightOfUseAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Other Right Of Use Assets",
        "terseLabel": "Other",
        "documentation": "Increase Decrease Through Other Right Of Use Assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughPremiumsPaidReinsuranceNetOfFixedCommissionInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughPremiumsPaidReinsuranceNetOfFixedCommissionInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Premiums Paid Reinsurance Net Of Fixed Commission Insurance Contracts Liability Asset",
        "terseLabel": "Premiums paid, net of received fixed commission",
        "documentation": "Increase decrease through premiums paid reinsurance net of fixed commission insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughPremiumsReceivedForInsuranceContractsIssuedInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughPremiumsReceivedForInsuranceContractsIssuedInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through premiums received for insurance contracts issued, insurance contracts liability (asset)",
        "terseLabel": "Premiums received"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from premiums received for insurance contracts issued. [Refer: Insurance contracts liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r223"
     ]
    },
    "aeg_IncreaseDecreaseThroughPremiumsReceivedInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughPremiumsReceivedInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Premiums Received Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Premiums received",
        "documentation": "increase decrease through premiums received insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughRealizedGainsLossFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughRealizedGainsLossFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Realized Gains Loss Financial Assets",
        "terseLabel": "Realized gains and losses through income statement",
        "documentation": "Increase decrease through realized gains loss financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughRecognitionOfContractualServiceMarginInProfitOrLossToReflectTransferOfServicesInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughRecognitionOfContractualServiceMarginInProfitOrLossToReflectTransferOfServicesInsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through recognition of contractual service margin in profit or loss to reflect transfer of services, insurance contracts liability (asset)",
        "verboseLabel": "Earnings released from contractual service margin",
        "terseLabel": "Earnings released from contractual service margin"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in insurance contracts liability (asset) resulting from recognition of the contractual service margin in profit or loss to reflect the transfer of services. [Refer: Insurance contracts liability (asset); Contractual service margin [member]]"
       }
      }
     },
     "auth_ref": [
      "r217"
     ]
    },
    "aeg_IncreaseDecreaseThroughReinsuranceContractsDisposedOffDuringTheYearLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughReinsuranceContractsDisposedOffDuringTheYearLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Reinsurance Contracts Disposed Off During The Year Liability Asset",
        "terseLabel": "Reinsurance contracts disposed in the year",
        "documentation": "Increase decrease through reinsurance contracts disposed off during the year liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughReleaseOfRiskAdjustmentInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughReleaseOfRiskAdjustmentInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Release Of Risk Adjustment Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Release of risk adjustment",
        "documentation": "Increase decrease through release of risk adjustment insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughRevaluationOfChangesInNonFinancialAssumptionsAndExperienceAdjustmentsToCurrentInterestRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughRevaluationOfChangesInNonFinancialAssumptionsAndExperienceAdjustmentsToCurrentInterestRates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Revaluation Of Changes In Non Financial Assumptions And Experience Adjustments To Current Interest Rates",
        "terseLabel": "Revaluation of changes in\u00a0non-financial\u00a0assumptions and experience adjustments to current interest rates",
        "documentation": "Increase decrease through revaluation of changes in non financial assumptions and experience adjustments to current interest rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughRevenueRecognizedForIncurredPolicyholderTaxExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughRevenueRecognizedForIncurredPolicyholderTaxExpenses",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Revenue Recognized For Incurred Policyholder Tax Expenses",
        "verboseLabel": "Changes that relate to current service",
        "documentation": "Increase decrease through revenue recognized for incurred policyholder tax expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughServiceResultInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughServiceResultInsuranceContractsWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Service Result Insurance Contracts With Discretionary Participating Features Liability Asset",
        "terseLabel": "Insurance service result",
        "documentation": "increase decrease through service result insurance contracts with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughSharebasedPaymentTransactions",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through share-based payment transactions, equity",
        "terseLabel": "Incentive plans",
        "negatedLabel": "Incentive plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in equity resulting from share-based payment transactions. [Refer: Equity]"
       }
      }
     },
     "auth_ref": [
      "r612"
     ]
    },
    "aeg_IncreaseDecreaseThroughTransferToDisposalGroupDuringThePeriodInsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughTransferToDisposalGroupDuringThePeriodInsuranceContractsLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Transfer To Disposal Group During The Period Insurance Contracts Liability Asset",
        "terseLabel": "Transfers to disposal groups",
        "documentation": "Increase decrease through transfer to disposal group during the period insurance contracts liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughTransferToFromOtherHeadingsDeferredTaxLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughTransferToFromOtherHeadingsDeferredTaxLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through Transfer to/from other headings Deferred Tax Liability Asset",
        "verboseLabel": "Transfer to/from other headings",
        "documentation": "Increase (decrease) through Transfer to/from other headings Deferred Tax Liability Asset"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughTransferToFromOtherHeadingsFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughTransferToFromOtherHeadingsFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Transfer To From Other Headings Financial Assets",
        "terseLabel": "Transfer to/from other headings",
        "documentation": "Increase decrease through transfer to from other headings financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughTransferToOtherHeadingsInsuranceContractLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughTransferToOtherHeadingsInsuranceContractLiabilityAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Transfer To Other Headings Insurance Contract Liability Asset",
        "terseLabel": "Transfer (to)/from other headings",
        "documentation": "Increase decrease through transfer to other headings insurance contract liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesIntangibleAssetsAndGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughTransfersAndOtherChangesIntangibleAssetsAndGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through transfers and other changes, intangible assets and goodwill",
        "terseLabel": "Other movements"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in intangible assets and goodwill resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets and goodwill]"
       }
      }
     },
     "auth_ref": [
      "r925"
     ]
    },
    "ifrs-full_IncreaseDecreaseThroughTransfersFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseDecreaseThroughTransfersFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (decrease) through transfers, financial assets",
        "terseLabel": "Transfers"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in financial assets resulting from transfers. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r730",
      "r733",
      "r749",
      "r773",
      "r776"
     ]
    },
    "aeg_IncreaseDecreaseThroughTransfersFinancialAssetsAllowanceAccountForCreditLossesOfFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughTransfersFinancialAssetsAllowanceAccountForCreditLossesOfFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Transfers Financial Assets Allowance Account For Credit Losses Of Financial Assets",
        "terseLabel": "Transfers",
        "documentation": "Increase decrease through transfers financial assets allowance account for credit losses of financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseDecreaseThroughUnrealizedGainLossEquityFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseDecreaseThroughUnrealizedGainLossEquityFinancialAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase Decrease Through Unrealized Gain Loss Equity Financial Assets",
        "terseLabel": "Unrealized gains/losses through equity",
        "documentation": "Increase decrease through unrealized gain loss equity financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IncreaseOfMarketInterestRatesHundredBasisPointsEffectOnYieldCurveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncreaseOfMarketInterestRatesHundredBasisPointsEffectOnYieldCurveMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase of Market Interest Rates Hundred Basis Points Effect On Yield Curve [Member]",
        "terseLabel": "100 bps increase - Yield curve [member]",
        "documentation": "Increase of market interest rates hundred basis points effect on yield curve."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IncreaseThroughOriginationOrPurchaseFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IncreaseThroughOriginationOrPurchaseFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase through origination or purchase, financial assets",
        "verboseLabel": "New financial assets originated or purchased"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in financial assets resulting from origination or purchase. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r730",
      "r731",
      "r749",
      "r773",
      "r774"
     ]
    },
    "aeg_IncurredClaimsAndExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IncurredClaimsAndExpenses",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Incurred Claims And Expenses",
        "terseLabel": "Incurred claims and expenses",
        "documentation": "Incurred claims and expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IndependentThirdPartyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndependentThirdPartyAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Independent Third Party [Axis]",
        "terseLabel": "Independent Third Party [Axis]",
        "documentation": "Independent Third Party."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IndependentThirdPartyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndependentThirdPartyDomain",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Independent Third Party [Domain]",
        "terseLabel": "Independent Third Party [Domain]",
        "documentation": "Independent Third Party."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IndexedUniversalLifeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndexedUniversalLifeMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Indexed Universal Life [Member]",
        "terseLabel": "Indexed Universal Life [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_IndividualAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "IndividualAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure",
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure",
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements",
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Individual [Axis]",
        "terseLabel": "Individual:"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r860",
      "r869",
      "r873",
      "r881"
     ]
    },
    "aeg_IndividualProtectionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndividualProtectionMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Individual Protection [Member]",
        "terseLabel": "Individual Protection [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IndonesiaGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndonesiaGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Indonesia Government Bonds [Member]",
        "terseLabel": "Indonesia government bonds [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IndustrialMortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndustrialMortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Industrial Mortgage Loans [member]",
        "terseLabel": "Industrial mortgage loans [member]",
        "documentation": "Industrial mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IndustriesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IndustriesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Industries [member]",
        "terseLabel": "Industries [member]",
        "documentation": "Industries."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InitialRecognitionOfOnerousUnderlyingContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InitialRecognitionOfOnerousUnderlyingContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Initial Recognition Of Onerous Underlying Contracts",
        "terseLabel": "Initial recognition of onerous underlying contracts",
        "documentation": "Initial recognition of onerous underlying contracts."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InitiallyAppliedIFRSsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InitiallyAppliedIFRSsAxis",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Initially applied IFRSs [axis]"
       }
      }
     },
     "auth_ref": [
      "r128",
      "r450"
     ]
    },
    "ifrs-full_InitiallyAppliedIFRSsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InitiallyAppliedIFRSsDomain",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Initially applied IFRSs [domain]"
       }
      }
     },
     "auth_ref": [
      "r128",
      "r450"
     ]
    },
    "ecd_InsiderTradingArrLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTradingArrLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Arrangements [Line Items]",
        "terseLabel": "Insider Trading Arrangements:"
       }
      }
     },
     "auth_ref": [
      "r879"
     ]
    },
    "ecd_InsiderTradingPoliciesProcLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTradingPoliciesProcLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures [Line Items]",
        "terseLabel": "Insider Trading Policies and Procedures:"
       }
      }
     },
     "auth_ref": [
      "r796",
      "r885"
     ]
    },
    "ecd_InsiderTrdPoliciesProcAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTrdPoliciesProcAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures Adopted [Flag]",
        "terseLabel": "Insider Trading Policies and Procedures Adopted"
       }
      }
     },
     "auth_ref": [
      "r796",
      "r885"
     ]
    },
    "ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "InsiderTrdPoliciesProcNotAdoptedTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insider Trading Policies and Procedures Not Adopted [Text Block]",
        "terseLabel": "Insider Trading Policies and Procedures Not Adopted"
       }
      }
     },
     "auth_ref": [
      "r796",
      "r885"
     ]
    },
    "aeg_InsuranceAndInvestmentContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceAndInvestmentContractsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance And Investment Contracts [member]",
        "terseLabel": "Insurance and investment contracts [member]",
        "documentation": "Insurance and investment contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceAndReinsuranceAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceAndReinsuranceAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance and Reinsurance Assets [Member]",
        "terseLabel": "Insurance and reinsurance assets [member]",
        "documentation": "Insurance and reinsurance assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceAndReinsuranceLiabilitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceAndReinsuranceLiabilitiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance and Reinsurance Liabilities [Member]",
        "terseLabel": "Insurance and reinsurance liabilities [member]",
        "documentation": "Insurance and reinsurance liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractLiabilitiesExcludingInvestmentContract": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractLiabilitiesExcludingInvestmentContract",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contract Liabilities Excluding Investment Contract",
        "terseLabel": "Insurance contract liabilities",
        "documentation": "Insurance contract liabilities excluding investment contract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contract [Member]",
        "terseLabel": "Insurance contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractsAndInvestmentContractsWithoutParticipationFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsAndInvestmentContractsWithoutParticipationFeatures",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts And Investment Contracts Without Participation Features",
        "terseLabel": "Insurance contracts and investment contracts without participation features",
        "documentation": "Insurance contracts and investment contracts without participation features."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceContractsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsAxis",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r201",
      "r205",
      "r234",
      "r239",
      "r241"
     ]
    },
    "ifrs-full_InsuranceContractsByComponentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsByComponentsAxis",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts by components [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r201",
      "r205",
      "r239"
     ]
    },
    "ifrs-full_InsuranceContractsByComponentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsByComponentsDomain",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts by components [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all insurance contracts when disaggregated by components, ie the estimates of the present value of the future cash flows, the risk adjustment for non-financial risk and the contractual service margin. This member also represents the standard value for the 'Insurance contracts by components' axis if no other member is used. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r201",
      "r205",
      "r239"
     ]
    },
    "ifrs-full_InsuranceContractsByRemainingCoverageAndIncurredClaimsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsByRemainingCoverageAndIncurredClaimsAxis",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts by remaining coverage and incurred claims [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r202"
     ]
    },
    "ifrs-full_InsuranceContractsByRemainingCoverageAndIncurredClaimsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsByRemainingCoverageAndIncurredClaimsDomain",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts by remaining coverage and incurred claims [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all insurance contracts when disaggregated by remaining coverage and incurred claims. This member also represents the standard value for the 'Insurance contracts by remaining coverage and incurred claims' axis if no other member is used. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r202"
     ]
    },
    "ifrs-full_InsuranceContractsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsDomain",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for contracts under which one party (the issuer) accepts significant insurance risk from another party (the policyholder) by agreeing to compensate the policyholder if a specified uncertain future event (the insured event) adversely affects the policyholder. All references in IFRS 17 to insurance contracts also apply to: (a) reinsurance contracts held, except: (i) for references to insurance contracts issued; and (ii) as described in paragraphs 60\u201370A of IFRS 17; (b) investment contracts with discretionary participation features provided the entity also issues insurance contracts, except for the reference to insurance contracts in paragraph 3(c) of IFRS 17 and as described in paragraph 71 of IFRS 17. An investment contract with discretionary participation features is a financial instrument that provides a particular investor with the contractual right to receive, as a supplement to an amount not subject to the discretion of the issuer, additional amounts: (a) that are expected to be a significant portion of the total contractual benefits; (b) the timing or amount of which are contractually at the discretion of the issuer; and (c) that are contractually based on: (i) the returns on a specified pool of contracts or a specified type of contract; (ii) realised and/or unrealised investment returns on a specified pool of assets held by the issuer; or (iii) the profit or loss of the entity or fund that issues the contract. This member also represents the standard value for the 'Insurance contracts' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r201",
      "r205",
      "r234",
      "r239",
      "r241"
     ]
    },
    "ifrs-full_InsuranceContractsIssuedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsIssuedMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts issued [member]",
        "presentationGuidance": "Insurance contracts issued [member]",
        "verboseLabel": "Insurance contracts [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for insurance contracts issued. [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r239",
      "r241",
      "r255",
      "r257",
      "r268"
     ]
    },
    "ifrs-full_InsuranceContractsIssuedThatAreAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsIssuedThatAreAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 57.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts issued that are assets",
        "terseLabel": "Insurance contract assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of insurance contracts issued that are assets. [Refer: Assets; Insurance contracts issued [member]]"
       }
      }
     },
     "auth_ref": [
      "r259",
      "r627"
     ]
    },
    "ifrs-full_InsuranceContractsIssuedThatAreLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsIssuedThatAreLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts issued that are liabilities",
        "terseLabel": "Insurance contract liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of insurance contracts issued that are liabilities. [Refer: Liabilities; Insurance contracts issued [member]]"
       }
      }
     },
     "auth_ref": [
      "r260",
      "r633"
     ]
    },
    "aeg_InsuranceContractsLiabilitiesWithSignificantExpectedReleaseOfRiskAdjustments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsLiabilitiesWithSignificantExpectedReleaseOfRiskAdjustments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts Liabilities With Significant Expected Release Of Risk Adjustments",
        "terseLabel": "Expected release of risk adjustment",
        "documentation": "Insurance contracts liabilities with significant expected release of risk adjustments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceContractsLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts liability (asset)",
        "terseLabel": "Insurance contracts",
        "verboseLabel": "Insurance contracts net balance",
        "periodEndLabel": "Closing net balance",
        "periodStartLabel": "Opening net balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of insurance contracts liability (asset). [Refer: Assets; Liabilities; Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r269"
     ]
    },
    "ifrs-full_InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsOtherThanThoseToWhichPremiumAllocationApproachHasBeenAppliedMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts other than those to which premium allocation approach has been applied [member]",
        "terseLabel": "Insurance contracts other than those to which premium allocation approach has been applied [member]",
        "verboseLabel": "Contracts not measured under the PAA [member]",
        "disclosureGuidance": "Contracts measured under Non-PAA [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for insurance contracts other than those to which the premium allocation approach has been applied. Premium allocation approach is an approach, described in paragraphs 53-59 of IFRS 17, that simplifies the measurement of the liability for remaining coverage of a group of insurance contracts."
       }
      }
     },
     "auth_ref": [
      "r205",
      "r234",
      "r239",
      "r241"
     ]
    },
    "aeg_InsuranceContractsRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsRevenue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "aeg_RevenueFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts Revenue",
        "verboseLabel": "Insurance revenue",
        "documentation": "Insurance contracts revenue."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceContractsThatAreAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsThatAreAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts that are assets",
        "verboseLabel": "Insurance contract assets",
        "periodEndLabel": "Closing assets",
        "periodStartLabel": "Opening assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of insurance contracts that are assets. [Refer: Assets; Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r269"
     ]
    },
    "ifrs-full_InsuranceContractsThatAreLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsThatAreLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts that are liabilities",
        "disclosureGuidance": "Insurance liabilities",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Closing balance",
        "verboseLabel": "Insurance contract liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of insurance contracts that are liabilities. [Refer: Liabilities; Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r269"
     ]
    },
    "ifrs-full_InsuranceContractsToWhichPremiumAllocationApproachHasBeenAppliedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceContractsToWhichPremiumAllocationApproachHasBeenAppliedMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance contracts to which premium allocation approach has been applied [member]",
        "terseLabel": "Insurance contracts to which premium allocation approach has been applied [member]",
        "definitionGuidance": "Contracts measured under the PAA [member]",
        "verboseLabel": "Contracts measured under the PAA [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for insurance contracts to which the premium allocation approach has been applied. Premium allocation approach is an approach, described in paragraphs 53-59 of IFRS 17, that simplifies the measurement of the liability for remaining coverage of a group of insurance contracts."
       }
      }
     },
     "auth_ref": [
      "r201"
     ]
    },
    "aeg_InsuranceContractsWithDirectParticipatingFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsWithDirectParticipatingFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts With Direct Participating Features [Member]",
        "terseLabel": "Insurance Contracts With Direct Participating Features [member]",
        "documentation": "Insurance contracts with direct participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractsWithDirectParticipationContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsWithDirectParticipationContractsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts With Direct Participation Contracts [Member]",
        "terseLabel": "Insurance contracts - Direct participating contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractsWithDpfMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsWithDpfMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts With DPF [Member]",
        "terseLabel": "Insurance contracts with DPF [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractsWithoutDirectParticipatingFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsWithoutDirectParticipatingFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts Without Direct Participating Features [Member]",
        "terseLabel": "Insurance Contracts Without Direct Participating Features [member]",
        "documentation": "Insurance contracts without direct participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceContractsWithoutDirectParticipationContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceContractsWithoutDirectParticipationContractsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Contracts Without Direct Participation Contracts [Member]",
        "terseLabel": "Insurance contracts - Without direct participation contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceFinanceIncomeExpenseAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceFinanceIncomeExpenseAxis",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Finance Income Expense [Axis]",
        "terseLabel": "Insurance finance income expense [axis]",
        "documentation": "Insurance finance income expense."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceFinanceIncomeExpenseMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceFinanceIncomeExpenseMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Finance Income Expense [Member]",
        "terseLabel": "Insurance finance income expense [member]",
        "documentation": "Insurance finance income expense."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceFinanceIncomeExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceFinanceIncomeExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance finance income (expenses)",
        "terseLabel": "Insurance finance income / (expenses)",
        "totalLabel": "Total insurance/ reinsurance finance income / (expenses)"
       }
      }
     },
     "auth_ref": [
      "r243"
     ]
    },
    "aeg_InsuranceFinanceIncomeExpensesFromInsuranceAndInvestmentContractsIssuedRecognizedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceFinanceIncomeExpensesFromInsuranceAndInvestmentContractsIssuedRecognizedInProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Finance Income Expenses From Insurance And Investment Contracts Issued Recognized In Profit Or Loss",
        "verboseLabel": "Amounts recognized in profit or loss",
        "documentation": "Insurance finance income expenses from insurance and investment contracts issued recognized in profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance finance income (expenses) from insurance contracts issued excluded from profit or loss that will be reclassified to profit or loss, before tax",
        "terseLabel": "Amounts recognized in OCI"
       }
      }
     },
     "auth_ref": [
      "r264",
      "r267",
      "r672"
     ]
    },
    "ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 25.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance finance income (expenses) from insurance contracts issued recognised in profit or loss",
        "terseLabel": "Insurance finance income / (expenses)"
       }
      }
     },
     "auth_ref": [
      "r264",
      "r666"
     ]
    },
    "aeg_InsuranceImpairmentLossesReversals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceImpairmentLossesReversals",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 30.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Impairment Losses Reversals",
        "terseLabel": "Impairment (losses) / reversals",
        "documentation": "Insurance impairment losses reversals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceInterestExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceInterestExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 31.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Interest Expenses",
        "terseLabel": "Interest expenses",
        "documentation": "Insurance interest expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceInterestRevenueOnFinancialInstrumentsMeasuredAtFVPL": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceInterestRevenueOnFinancialInstrumentsMeasuredAtFVPL",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 27.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Interest Revenue On Financial Instruments Measured At FVPL",
        "terseLabel": "Interest income from instruments measured at FVPL",
        "documentation": "Insurance interest revenue on financial instruments measured at FVPL."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceInvestmentReturnMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceInvestmentReturnMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Investment Return [Member]",
        "terseLabel": "Insurance investment return [member]",
        "documentation": "Insurance investment return."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceItemsThatMayBeReclassifiedSubsequentlyToProfitOrLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceItemsThatMayBeReclassifiedSubsequentlyToProfitOrLossAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Items That May Be Reclassified Subsequently To Profit Or Loss [Abstract]",
        "terseLabel": "Insurance items that may be reclassified subsequently to profit or loss:"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceNetInvestmentResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceNetInvestmentResult",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_TotalNetInvestmentResult",
       "weight": 1.0,
       "order": 24.0
      },
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Net Investment Result",
        "totalLabel": "Insurance net investment result",
        "documentation": "Insurance net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceNetInvestmentResultAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceNetInvestmentResultAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Net Investment Result [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceNetInvestmentResultExcludedFromProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceNetInvestmentResultExcludedFromProfitOrLossNetOfTax",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Net Investment Result Excluded From Profit Or Loss Net Of Tax",
        "terseLabel": "Amounts recognized in OCI",
        "documentation": "Insurance net investment result excluded from profit or loss net of tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceNetInvestmentResultMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceNetInvestmentResultMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Net Investment Result [Member]",
        "documentation": "Insurance net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceNetInvestmentResultRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceNetInvestmentResultRecognisedInProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Net Investment Result Recognised In Profit Or Loss",
        "terseLabel": "Amounts recognized in profit or loss",
        "documentation": "Insurance net investment result recognised in profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceOtherInvestmentIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceOtherInvestmentIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 28.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Other Investment Income",
        "terseLabel": "Other investment income",
        "documentation": "Insurance other investment income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceReinsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Reinsurance Contracts And Investment Contracts With Discretionary Participation Features [Abstract]",
        "documentation": "Insurance, reinsurance contracts and investment contracts with discretionary participation features [Abstract]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceRelatedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceRelatedMember",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Related [Member]",
        "terseLabel": "Insurance related [member]",
        "documentation": "Insurance related member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InsuranceResultsFromFinancialTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InsuranceResultsFromFinancialTransactions",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_InsuranceNetInvestmentResult",
       "weight": 1.0,
       "order": 29.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance Results From Financial Transactions",
        "terseLabel": "Results from financial transactions",
        "documentation": "Insurance results from fnancial transactions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_InsuranceServiceResult",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue",
        "terseLabel": "Insurance revenue"
       }
      }
     },
     "auth_ref": [
      "r234",
      "r263",
      "r662"
     ]
    },
    "ifrs-full_InsuranceRevenueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenueAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InsuranceRevenueAllocationOfPortionOfPremiumsThatRelateToRecoveryOfInsuranceAcquisitionCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenueAllocationOfPortionOfPremiumsThatRelateToRecoveryOfInsuranceAcquisitionCashFlows",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue, allocation of portion of premiums that relate to recovery of insurance acquisition cash flows",
        "terseLabel": "Recovery of acquisition cash flows"
       }
      }
     },
     "auth_ref": [
      "r233"
     ]
    },
    "ifrs-full_InsuranceRevenueChangeInRiskAdjustmentForNonfinancialRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenueChangeInRiskAdjustmentForNonfinancialRisk",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "ifrs-full_InsuranceFinanceIncomeExpenses",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue, change in risk adjustment for non-financial risk",
        "terseLabel": "Release of risk adjustment",
        "verboseLabel": "Revaluation of changes in\u00a0non-financial\u00a0assumptions and experience adjustments to current interest rates"
       }
      }
     },
     "auth_ref": [
      "r230"
     ]
    },
    "ifrs-full_InsuranceRevenueContractualServiceMarginRecognisedInProfitOrLossBecauseOfTransferOfServices": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenueContractualServiceMarginRecognisedInProfitOrLossBecauseOfTransferOfServices",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue, contractual service margin recognised in profit or loss because of transfer of insurance contract services",
        "terseLabel": "Earnings released from CSM"
       }
      }
     },
     "auth_ref": [
      "r231"
     ]
    },
    "ifrs-full_InsuranceRevenueInsuranceServiceExpensesIncurredDuringPeriodMeasuredAtAmountsExpectedAtBeginningOfPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenueInsuranceServiceExpensesIncurredDuringPeriodMeasuredAtAmountsExpectedAtBeginningOfPeriod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue, insurance service expenses incurred during period measured at amounts expected at beginning of period",
        "terseLabel": "Expected insurance claims and expenses"
       }
      }
     },
     "auth_ref": [
      "r229"
     ]
    },
    "ifrs-full_InsuranceRevenueOtherAmounts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRevenueOtherAmounts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfAmountsRelatedToChangesInLiabilityForRemainingCoverageDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance revenue, other amounts",
        "terseLabel": "Other"
       }
      }
     },
     "auth_ref": [
      "r232"
     ]
    },
    "ifrs-full_InsuranceRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceRiskMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for risk, other than financial risk, transferred from the holder of a contract to the issuer. [Refer: Financial risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r249",
      "r250",
      "r251",
      "r252"
     ]
    },
    "ifrs-full_InsuranceServiceExpensesFromInsuranceContractsIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceServiceExpensesFromInsuranceContractsIssued",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "ifrs-full_InsuranceFinanceIncomeExpenses",
       "weight": -1.0,
       "order": 5.0
      },
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_InsuranceServiceResult",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance service expenses from insurance contracts issued",
        "negatedLabel": "Insurance service expenses",
        "terseLabel": "Insurance service expenses",
        "verboseLabel": "Total insurance service expenses",
        "positiveTerseLabel": "Interest accreted to insurance / reinsurance contracts"
       }
      }
     },
     "auth_ref": [
      "r263",
      "r664"
     ]
    },
    "ifrs-full_InsuranceServiceResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InsuranceServiceResult",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_TotalNetInvestmentResult",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Insurance service result",
        "totalLabel": "Insurance service result"
       }
      }
     },
     "auth_ref": [
      "r263"
     ]
    },
    "ifrs-full_IntangibleAssetsAndGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IntangibleAssetsAndGoodwill",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 47.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intangible assets and goodwill",
        "terseLabel": "Intangible assets",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_InterSegmentOperatingResults": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterSegmentOperatingResults",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Inter Segment Operating Results",
        "terseLabel": "Inter-segment operating result",
        "documentation": "Inter segment operating results."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestCharges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestCharges",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_FinancingNetInvestmentResult",
       "weight": -1.0,
       "order": 33.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Charges",
        "negatedLabel": "Interest charges",
        "documentation": "Interest charges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestChargesAndRelatedFees": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestChargesAndRelatedFees",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ExpenseByNature",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest charges and related fees",
        "verboseLabel": "Interest charges and related fees",
        "totalLabel": "Total",
        "documentation": "Interest charges and related fees."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
       "weight": -1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense",
        "negatedLabel": "Interest expense"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of expense arising from interest."
       }
      }
     },
     "auth_ref": [
      "r165",
      "r361",
      "r370"
     ]
    },
    "ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpenseIncomeNetDefinedBenefitLiabilityAsset",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail": {
       "parentTag": "aeg_EmployeeBenefitObligationsExpenses",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense (income), net defined benefit liability (asset)",
        "terseLabel": "Interest expense",
        "verboseLabel": "Net interest on net defined benefit liability (asset)"
       }
      }
     },
     "auth_ref": [
      "r23",
      "r474"
     ]
    },
    "ifrs-full_InterestExpenseOnBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpenseOnBorrowings",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail": {
       "parentTag": "aeg_NetResultOnFinancingInvestmentActivities",
       "weight": -1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail": {
       "parentTag": "aeg_InterestChargesAndRelatedFees",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on borrowings",
        "negatedLabel": "- Borrowings",
        "verboseLabel": "Borrowings"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_InterestExpenseOnLeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpenseOnLeaseLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on lease liabilities",
        "negatedLabel": "Right of use assets \u2013 interest expense"
       }
      }
     },
     "auth_ref": [
      "r193",
      "r419"
     ]
    },
    "ifrs-full_InterestExpenseOnOtherFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestExpenseOnOtherFinancialLiabilities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail": {
       "parentTag": "aeg_InterestChargesAndRelatedFees",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on other financial liabilities",
        "terseLabel": "Other"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_InterestExpenseOnOtherNetInvestmentResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestExpenseOnOtherNetInvestmentResult",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest expense on other net investment result",
        "negatedLabel": "Interest expense",
        "documentation": "Interest expense on other net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestExpenseOnSubordinatedLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestExpenseOnSubordinatedLoans",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail": {
       "parentTag": "aeg_InterestChargesAndRelatedFees",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail": {
       "parentTag": "aeg_NetResultOnFinancingInvestmentActivities",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expense On Subordinated Loans",
        "negatedLabel": "- Subordinated loans",
        "terseLabel": "Subordinated borrowings",
        "documentation": "Interest expense on subordinated loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestExpenseOnTrustPassThroughSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestExpenseOnTrustPassThroughSecurities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail": {
       "parentTag": "aeg_NetResultOnFinancingInvestmentActivities",
       "weight": -1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expense On Trust Pass Through Securities",
        "negatedLabel": "- Trust pass-through securities",
        "documentation": "Interest expense on trust pass-through securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestExpensesOnDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestExpensesOnDerivatives",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail": {
       "parentTag": "aeg_InterestChargesAndRelatedFees",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Expenses On Derivatives",
        "terseLabel": "Derivatives",
        "documentation": "Interest expenses on derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeAndGainsAndLossesOnSaleOfAssetsOnUnconsolidatedStructuredEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeAndGainsAndLossesOnSaleOfAssetsOnUnconsolidatedStructuredEntities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income And Gains And Losses on Sale Of Assets On Unconsolidated Structured Entities",
        "totalLabel": "Total",
        "documentation": "Interest income and gains and losses on sale of assets on unconsolidated structured entities such as RMBSs, CMBSs and ABSs and investment funds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeAndGainsAndLossesOnTotalValueOfInvestmentsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeAndGainsAndLossesOnTotalValueOfInvestmentsLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income And Gains And Losses On Total Value Of Investments [Line Items]",
        "terseLabel": "Interest income and gains and losses on total value of investments [line items]",
        "documentation": "Interest income and gains and losses on total value of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeAndGainsAndLossesOnTotalValueOfInvestmentsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeAndGainsAndLossesOnTotalValueOfInvestmentsTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income And Gains And Losses On Total Value Of Investments [Table]",
        "terseLabel": "Interest income and gains and losses on total value of investments [table]",
        "documentation": "Interest income and gains and losses on total value of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeFromFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeFromFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income From Financial Instruments Measured At Fair Value Through Profit Or Loss",
        "terseLabel": "Interest revenue on financial instruments measured at FVPL",
        "documentation": "Interest income from financial instruments measured at fair value through profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeFromIntercompanyLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeFromIntercompanyLoans",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income from intercompany loans",
        "terseLabel": "Interest income from intercompany loans",
        "documentation": "Interest income from intercompany loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeFromShortTermInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeFromShortTermInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income From Short Term Investments",
        "terseLabel": "Interest income from short-term investments",
        "documentation": "Interest income from short-term investments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "aeg_RevenueFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income on financial assets designated at fair value through profit or loss",
        "verboseLabel": "Interest income from instruments measured at FVPL"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_InterestIncomeOnFinancialInstrumentsUsingTheEffectiveInterestMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeOnFinancialInstrumentsUsingTheEffectiveInterestMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_TotalNetInvestmentResult",
       "weight": 1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income On Financial Instruments Using The Effective Interest Method",
        "terseLabel": "Interest revenue on financial instruments calculated using the effective interest method",
        "documentation": "Interest income on financial instruments calculated using the effective interest method."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestIncomeOnUnconsolidatedStructuredEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestIncomeOnUnconsolidatedStructuredEntities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail": {
       "parentTag": "aeg_InterestIncomeAndGainsAndLossesOnSaleOfAssetsOnUnconsolidatedStructuredEntities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Income On Unconsolidated Structured Entities",
        "terseLabel": "Interest income",
        "documentation": "Interest income on unconsolidated structured entities such as RMBSs, CMBSs and ABSs and investment funds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestPaidClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestPaidClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 46.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest paid, classified as financing activities",
        "negatedLabel": "Coupons on perpetual securities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for interest paid, classified as financing activities."
       }
      }
     },
     "auth_ref": [
      "r120"
     ]
    },
    "ifrs-full_InterestPaidClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestPaidClassifiedAsOperatingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest paid, classified as operating activities",
        "terseLabel": "Interest paid"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for interest paid, classified as operating activities."
       }
      }
     },
     "auth_ref": [
      "r120"
     ]
    },
    "aeg_InterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestRate",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Rate",
        "terseLabel": "Interest rate",
        "documentation": "Interest rate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestRateBenchmarksAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestRateBenchmarksAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest rate benchmarks [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r322"
     ]
    },
    "ifrs-full_InterestRateBenchmarksDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestRateBenchmarksDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest rate benchmarks [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all interest rate benchmarks. It also represents the standard value for the 'Interest rate benchmarks' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r322"
     ]
    },
    "aeg_InterestRateContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestRateContractsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Rate Contracts [Member]",
        "terseLabel": "Interest rate contracts [member]",
        "documentation": "Interest rate contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestRateSignificantUnobservableInputAsset": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestRateSignificantUnobservableInputAsset",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Rate Significant Unobservable Input Asset",
        "terseLabel": "Range (weighted average)",
        "documentation": "Interest rate significant unobservable input asset."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InterestRateSwapContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestRateSwapContractMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest rate swap contract [member]",
        "terseLabel": "Interest rate contracts [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an interest rate swap contract. [Refer: Swap contract [member]]"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_InterestReceivedClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestReceivedClassifiedAsOperatingActivities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest received, classified as operating activities",
        "terseLabel": "Interest received"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from interest received, classified as operating activities."
       }
      }
     },
     "auth_ref": [
      "r120"
     ]
    },
    "ifrs-full_InterestRevenueCalculatedUsingEffectiveInterestMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InterestRevenueCalculatedUsingEffectiveInterestMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "aeg_RevenueFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 5.0
      },
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
       "weight": 1.0,
       "order": 21.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest revenue calculated using effective interest method",
        "terseLabel": "Interest revenue on financial instruments calculated using the effective interest method",
        "verboseLabel": "Interest revenue on financial instruments calculated using the effective interest method"
       }
      }
     },
     "auth_ref": [
      "r661",
      "r663"
     ]
    },
    "aeg_InterestRevenueOnFinancialInstrumentsCalculatedUsingEffectiveInterestMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestRevenueOnFinancialInstrumentsCalculatedUsingEffectiveInterestMethod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Revenue On Financial Instruments Calculated Using Effective Interest Method",
        "terseLabel": "Interest revenue on financial instruments calculated using effective interest method",
        "documentation": "Interest revenue on financial instruments calculated using effective interest method."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Revenue On Financial Instruments Calculated Using The Effective Interest Method",
        "terseLabel": "Interest revenue on financial instruments calculated using the effective interest method",
        "verboseLabel": "Interest revenue on financial instruments calculated using the effective interest method",
        "documentation": "Interest revenue on financial instruments calculated using the effective interest method."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest Revenue On Financial Instruments Measured At Fair Value Through Profit Or Loss",
        "negatedLabel": "Interest revenue on financial instruments measured at FVPL",
        "definitionGuidance": "Interest income from instruments measured at FVPL",
        "terseLabel": "Interest revenue on financial instruments measured at FVPL",
        "documentation": "Interest revenue on financial instruments measured at fair value through profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterestchargesandrelatedfeesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterestchargesandrelatedfeesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest charges and related fees [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterimDividendTwoThousandAndTwentyFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterimDividendTwoThousandAndTwentyFiveMember",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interim Dividend Two Thousand And Twenty Five [Member]",
        "verboseLabel": "Interim Dividend 2025 [Member]",
        "documentation": "Interim dividend two thousand and twenty five"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterimDividendTwoThousandAndTwentyFourMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterimDividendTwoThousandAndTwentyFourMember",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interim Dividend Two Thousand And Twenty Four [Member]",
        "terseLabel": "Interim Dividend 2024 [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterimDividendTwoThousandAndTwentyThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterimDividendTwoThousandAndTwentyThreeMember",
     "presentation": [
      "http://www.aegon.com/role/DividendPerCommonShareSummaryOfDividendPerCommonShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interim Dividend Two Thousand And Twenty Three [Member]",
        "terseLabel": "Interim Dividend 2023 [Member]",
        "documentation": "Interim dividend two thousand and twenty three member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InterimDiviendMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InterimDiviendMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interim Diviend [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InternalCreditGradesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InternalCreditGradesAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal credit grades [axis]",
        "terseLabel": "Internal credit grades [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r735",
      "r750",
      "r778"
     ]
    },
    "ifrs-full_InternalCreditGradesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InternalCreditGradesDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesCreditDerivativeDisclosureByQualityDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal credit grades [domain]",
        "terseLabel": "Internal credit grades [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Internal credit grades' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r735",
      "r750",
      "r778"
     ]
    },
    "aeg_InternalGradeFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeFiveMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade five [Member]",
        "terseLabel": "Internal grade 5 [member]",
        "documentation": "Internal grade five."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternalGradeFourMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeFourMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade Four [Member]",
        "terseLabel": "Internal grade 4 [member]",
        "documentation": "Internal grade four."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternalGradeOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeOneMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade one [Member]",
        "terseLabel": "Internal grade 1 [member]",
        "documentation": "Internal grade one."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternalGradeSevenOrLowerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeSevenOrLowerMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade seven or lower [Member]",
        "terseLabel": "Internal grade 7 or lower [member]",
        "documentation": "Internal grade seven or lower."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternalGradeSixMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeSixMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade six [Member]",
        "terseLabel": "Internal grade 6 [member]",
        "documentation": "Internal grade six."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternalGradeThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeThreeMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade Three [Member]",
        "terseLabel": "Internal grade 3 [member]",
        "documentation": "Internal grade three."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternalGradeTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternalGradeTwoMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Internal grade Two [Member]",
        "terseLabel": "Internal grade 2 [member]",
        "documentation": "Internal grade two."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InternationalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InternationalMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "International [Member]",
        "terseLabel": "International [member]",
        "documentation": "International."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IntersegmentRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IntersegmentRevenue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Intersegment Revenue",
        "terseLabel": "Inter-segment revenues",
        "documentation": "Intersegment revenue."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Investment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Investment",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail": {
       "parentTag": "aeg_RevenueGeneratingInvestments",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment",
        "terseLabel": "Investments",
        "documentation": "Investment"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 62.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments accounted for using equity method",
        "terseLabel": "Shares in group companies",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]"
       }
      }
     },
     "auth_ref": [
      "r169",
      "r365",
      "r580",
      "r628"
     ]
    },
    "aeg_InvestmentContractIncomeExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractIncomeExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 21.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract Income Expenses",
        "terseLabel": "Investment contract income / (expenses)",
        "documentation": "Investment contract income expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractLiabilitiesWithDiscretionaryParticipatingFeatures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractLiabilitiesWithDiscretionaryParticipatingFeatures",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract Liabilities With Discretionary Participating Features",
        "terseLabel": "Investment contract liabilities with discretionary participation features",
        "documentation": "Investment contract liabilities with discretionary participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contract [member]",
        "terseLabel": "Investment contracts - held at amortized cost [member]",
        "documentation": "Investment contract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractWithDiscretionaryParticipatingFeatureAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractWithDiscretionaryParticipatingFeatureAsset",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract With Discretionary Participating Feature Asset",
        "periodEndLabel": "Closing assets",
        "periodStartLabel": "Opening assets",
        "documentation": "Investment contract with discretionary participating feature asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractWithDiscretionaryParticipatingFeatureLiability": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractWithDiscretionaryParticipatingFeatureLiability",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract With Discretionary Participating Feature Liability",
        "periodStartLabel": "Opening liabilities",
        "periodEndLabel": "Closing liabilities",
        "documentation": "Investment contract with discretionary participating feature liability."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractWithDiscretionaryParticipatingFeaturesAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractWithDiscretionaryParticipatingFeaturesAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract With Discretionary Participating Features Assets",
        "periodEndLabel": "Closing assets, Investment contracts",
        "periodStartLabel": "Opening assets, Investment contracts",
        "documentation": "Investment contract with discretionary participating features assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractWithDiscretionaryParticipatingFeaturesLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractWithDiscretionaryParticipatingFeaturesLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract With Discretionary Participating Features Liabilities",
        "periodEndLabel": "Closing liabilities, Investment contracts",
        "periodStartLabel": "Opening liabilities, Investment contracts",
        "documentation": "Investment contract with discretionary participating features liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractWithDiscretionaryParticipatingFeaturesLiabilityAsset",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract With Discretionary Participating Features Liability Asset",
        "periodEndLabel": "Net closing balance, Investment contracts",
        "periodStartLabel": "Net opening balance, Investment contracts",
        "documentation": "Investment contract with discretionary participating features liability asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractWithDiscretionaryParticipationFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractWithDiscretionaryParticipationFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contract With Discretionary Participation Features [Member]",
        "verboseLabel": "Investment contract with discretionary participation features [member]",
        "documentation": "Investment contract with discretionary participation features member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts",
        "terseLabel": "Investment contracts",
        "documentation": "Investment contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsAccountOfPolicyholdersFundChargesReleased": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsAccountOfPolicyholdersFundChargesReleased",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts account of policyholders fund charges released",
        "terseLabel": "Fund charges released",
        "documentation": "Investment contracts account of policyholders fund charges released."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsFixedAnnuities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsFixedAnnuities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts fixed annuities",
        "terseLabel": "Fixed annuities",
        "documentation": "Investment contracts fixed annuities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For General Account",
        "periodStartLabel": "Beginning balance on January 1",
        "periodEndLabel": "Ending balance",
        "documentation": "Investment contracts for general account."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccountDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccountDeposits",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts for general account deposits",
        "terseLabel": "Deposits",
        "documentation": "Investment contracts for general account deposits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccountInterestCredited": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccountInterestCredited",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts for general account interest credited",
        "terseLabel": "Interest credited",
        "documentation": "Investment contracts for general account interest credited."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccountNetExchangeDifferences": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccountNetExchangeDifferences",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts for general account net exchange differences",
        "terseLabel": "Net exchange differences",
        "documentation": "Investment contracts for general account net exchange differences."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccountOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccountOther",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts for general account other",
        "terseLabel": "Other movements",
        "documentation": "Investment contracts for general account other."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccountTransfersFromOtherHeadings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccountTransfersFromOtherHeadings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts for general account transfers from other headings",
        "terseLabel": "Transfer to/from other headings",
        "documentation": "Investment contracts for general account transfers from other headings"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForGeneralAccountWithdrawals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForGeneralAccountWithdrawals",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts for general account withdrawals",
        "terseLabel": "Withdrawals",
        "documentation": "Investment contracts for general account withdrawals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account",
        "periodStartLabel": "Beginning balance on January 1",
        "periodEndLabel": "Ending balance",
        "documentation": "Investment contracts for separate account."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountDeposits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountDeposits",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Deposits",
        "terseLabel": "Deposits",
        "documentation": "Investment contracts for separate account deposits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountFundChargesReleased": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountFundChargesReleased",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Fund Charges Released",
        "terseLabel": "Fund charges released",
        "documentation": "Investment contracts for separate account fund charges released."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountInterestCredited": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountInterestCredited",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Interest Credited",
        "terseLabel": "Interest credited",
        "documentation": "Investment contracts for separate account interest credited."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountNetExchangeDifferences": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountNetExchangeDifferences",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Net Exchange Differences",
        "terseLabel": "Net exchange differences",
        "documentation": "Investment contracts for separate account net exchange differences."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountOtherMovements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountOtherMovements",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Other Movements",
        "terseLabel": "Other movements",
        "documentation": "Investment contracts for separate account other movements."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountTransferToOrFromOtherHeadings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountTransferToOrFromOtherHeadings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Transfer To Or From Other Headings",
        "terseLabel": "Transfer to/from other headings",
        "documentation": "Investment contracts for separate account transfer to or from other headings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsForSeparateAccountWithdrawals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsForSeparateAccountWithdrawals",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts For Separate Account Withdrawals",
        "terseLabel": "Withdrawals",
        "documentation": "Investment contracts for separate account withdrawals,"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsInstitutionalGuaranteedProducts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsInstitutionalGuaranteedProducts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts institutional guaranteed products",
        "terseLabel": "Institutional guaranteed products",
        "documentation": "Investment contracts institutional guaranteed products."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentContractsLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentContractsLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts liabilities",
        "verboseLabel": "Investment contracts without discretionary participation features",
        "definitionGuidance": "Investment contracts"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities relating to investment contracts that fall within the scope of IAS 39 or IFRS 9."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_InvestmentContractsLiabilitiesForSeparateAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsLiabilitiesForSeparateAccount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts Liabilities For Separate Account",
        "terseLabel": "Investment contracts liabilities for separate account",
        "documentation": "Investment contracts liabilities for separate account."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsOther": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsOther",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment contracts other",
        "terseLabel": "Other",
        "documentation": "Investment contracts other."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsWithDPFMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsWithDPFMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts With DPF [Member]",
        "terseLabel": "Investment contracts with DPF [member]",
        "documentation": "Investment contracts with DPF."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsWithDPFWithDirectParticipatingContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsWithDPFWithDirectParticipatingContractsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts With DPF With Direct Participating Contracts [Member]",
        "verboseLabel": "Investment contracts with DPF - Direct participating contracts [member]",
        "documentation": "Investment contracts with DPF with direct participating contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsWithDirectParticipatingFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsWithDirectParticipatingFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts With Direct Participating Features [Member]",
        "terseLabel": "Investment Contracts With Direct Participating Features [member]",
        "documentation": "Investment contracts with direct participating features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsWithDiscretionaryParticipatingFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsWithDiscretionaryParticipatingFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts With Discretionary Participating Features [Member]",
        "verboseLabel": "Investment contracts with DPF [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentContractsWithoutDPFPolicyholderRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentContractsWithoutDPFPolicyholderRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Contracts Without DPF Policyholder Risk [Member]",
        "verboseLabel": "Investment contracts without DPF - Policyholder risk [member]",
        "definitionGuidance": "Investment contracts without DPF - Policyholder risk [member]",
        "documentation": "Investment contracts where the policyholder bears the risk."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentCreditors": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentCreditors",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Creditors",
        "terseLabel": "Investment creditors",
        "documentation": "Investment creditors"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentFundsAmountContributedToFairValueOfPlanAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentFundsAmountContributedToFairValueOfPlanAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail": {
       "parentTag": "ifrs-full_AssetsOfBenefitPlan",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment funds, amount contributed to fair value of plan assets",
        "terseLabel": "Investment funds"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount investment funds contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]; Investment funds [member]]"
       }
      }
     },
     "auth_ref": [
      "r688"
     ]
    },
    "ifrs-full_InvestmentFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentFundsMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment funds [member]",
        "terseLabel": "Investment funds [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for investment funds."
       }
      }
     },
     "auth_ref": [
      "r707"
     ]
    },
    "ifrs-full_InvestmentFundsPercentageContributedToFairValueOfPlanAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentFundsPercentageContributedToFairValueOfPlanAssets",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment funds, percentage contributed to fair value of plan assets",
        "terseLabel": "Investment funds"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage investment funds contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]; Investment funds [member]] [Contrast: Investment funds, amount contributed to fair value of plan assets]"
       }
      }
     },
     "auth_ref": [
      "r913"
     ]
    },
    "aeg_InvestmentInAssociatesOtherValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentInAssociatesOtherValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment In Associates Other Value",
        "terseLabel": "Investment In Associates Other",
        "documentation": "Investment in associates other value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentInDepositsWithFinancialInstitutionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentInDepositsWithFinancialInstitutionsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment in deposits with financial institutions [member]",
        "verboseLabel": "Deposits with financial institutes [member]",
        "terseLabel": "Deposits with financial institutions [member]",
        "documentation": "Investment in deposits with financial institutions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentInJointVentureOtherValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentInJointVentureOtherValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment In Joint Venture Other Value",
        "terseLabel": "Investment In Joint Venture Other",
        "documentation": "Investment in joint venture other value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_Revenue",
       "weight": 1.0,
       "order": 40.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment income",
        "verboseLabel": "Investment income",
        "terseLabel": "Investment income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investment income, such as interest and dividends."
       }
      }
     },
     "auth_ref": [
      "r44",
      "r955"
     ]
    },
    "ifrs-full_InvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentProperty",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": "ifrs-full_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment property",
        "terseLabel": "Investments in real estate",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business."
       }
      }
     },
     "auth_ref": [
      "r104",
      "r110",
      "r513",
      "r517",
      "r625"
     ]
    },
    "ifrs-full_InvestmentPropertyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentPropertyMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment property [member]",
        "terseLabel": "Real estate [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for investment property. [Refer: Investment property]"
       }
      }
     },
     "auth_ref": [
      "r709",
      "r712"
     ]
    },
    "aeg_InvestmentResultAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentResultAxis",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Result [Axis]",
        "documentation": "Investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentResultDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentResultDomain",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Result [Domain]",
        "documentation": "Investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentSectorTypeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentSectorTypeAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Sector Type [Axis]",
        "terseLabel": "Investment Sector [Axis]",
        "documentation": "Investment sector [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentSectorTypeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentSectorTypeDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Sector Type [Domain]",
        "terseLabel": "Investment Sector [Domain]",
        "documentation": "Investment Sector [domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentSecuritiesOnUnconsolidatedStructuredEntities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentSecuritiesOnUnconsolidatedStructuredEntities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investment Securities On Unconsolidated Structured Entities",
        "terseLabel": "Investments",
        "documentation": "Investment securities on unconsolidated structured entities such as RMBSs, CMBSs and ABSs and investment funds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Investments1": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Investments1",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail": {
       "parentTag": "aeg_RevenueGeneratingInvestments",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments 1",
        "verboseLabel": "Total investments on balance sheet",
        "documentation": "Investments 1."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsAccountedForUsingEquityMethodAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsAccountedForUsingEquityMethodAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments accounted for using equity method [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsAegonRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsAegonRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments - Aegon risk [Member]",
        "verboseLabel": "Investments - Aegon risk [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsAndOtherAssetsAllocatedToInsuranceContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsAndOtherAssetsAllocatedToInsuranceContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentsAndOtherAssetsAllocatedToContractsThatWereNotTransitionedFullyRetrospectivelyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments And Other Assets Allocated To Insurance Contracts [Member]",
        "terseLabel": "Investments and other assets allocated to insurance contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsAxis",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments [Axis]",
        "terseLabel": "Investment [axis]",
        "documentation": "Investments [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsDomain",
     "presentation": [
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments [Domain]",
        "documentation": "Investments [domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsForGeneralAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsForGeneralAccount",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments for general account",
        "verboseLabel": "Investments",
        "documentation": "Investments for general account"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsForRiskOfPolicyHoldersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsForRiskOfPolicyHoldersMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments For Risk Of Policy Holders [Member]",
        "terseLabel": "Investments For Risk Of Policy Holders [member]",
        "documentation": "Investments for risk of policy holders member."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsInAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInAssociates",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in associates",
        "verboseLabel": "Investments in associates",
        "periodStartLabel": "At January\u00a01",
        "periodEndLabel": "At December\u00a031"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in associates in an entity's separate financial statements. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r52"
     ]
    },
    "ifrs-full_InvestmentsInAssociatesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInAssociatesAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 65.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in associates accounted for using equity method",
        "verboseLabel": "Investments in associates",
        "terseLabel": "Carrying amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in associates accounted for using the equity method. [Refer: Total for all associates [member]; Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncomeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncomeDomain",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in equity instruments designated at fair value through other comprehensive income [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Investments in equity instruments designated at fair value through other comprehensive income' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r605"
     ]
    },
    "ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeAxis",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in equity instruments designated at fair value through other comprehensive income [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r605"
     ]
    },
    "aeg_InvestmentsInForeignOperationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsInForeignOperationsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments In Foreign Operations [Member]",
        "terseLabel": "Investments in foreign operations [Member]",
        "documentation": "Investments in foreign operations."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsInJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInJointVentures",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in joint ventures",
        "verboseLabel": "Investments in joint ventures",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "terseLabel": "Carrying amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r52"
     ]
    },
    "ifrs-full_InvestmentsInJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInJointVenturesAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 66.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in joint ventures accounted for using equity method",
        "verboseLabel": "Investments in joint ventures"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments in joint ventures accounted for using the equity method. [Refer: Total for all joint ventures [member]; Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_InvestmentsInJointVenturesDisposals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsInJointVenturesDisposals",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in Joint Ventures Disposals",
        "negatedLabel": "Disposals",
        "documentation": "Investments in joint ventures disposals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsInRealEstateForPolicyholdersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsInRealEstateForPolicyholdersMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in real estate for policyholders [member]",
        "terseLabel": "Investments in real estate for policyholders [member]",
        "documentation": "Investments in real estate for policyholders."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsInRealEstateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsInRealEstateMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in real estate [member]",
        "terseLabel": "Investments in real estate [member]",
        "documentation": "Investments in real estate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsInSubsidiariesJointVenturesAndAssociatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsInSubsidiariesJointVenturesAndAssociatesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments in subsidiaries, joint ventures and associates [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsOneAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsOneAxis",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments One [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsOneMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments one [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments other than investments accounted for using equity method",
        "totalLabel": "Total investments",
        "terseLabel": "Investments"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_InvestmentsPolicyholderRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsPolicyholderRiskMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueSummaryOfCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesThatAreClassifiedAsAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfFinancialAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments - Policyholder Risk [Member]",
        "terseLabel": "Investments - Policyholder\u00a0risk [member]",
        "definitionGuidance": "Investments - Policyholder risk [member]",
        "documentation": "Investment where the policyholders bear the risk."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsaccountedforusingequitymethodLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsaccountedforusingequitymethodLineItems",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompanies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments accounted for using equity method [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_InvestmentsaccountedforusingequitymethodTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "InvestmentsaccountedforusingequitymethodTable",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompanies"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Investments accounted for using equity method [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IssuanceAndPurchaseOfTreasuryShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IssuanceAndPurchaseOfTreasuryShares",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issuance and purchase of treasury shares",
        "negatedLabel": "Issuance and purchase of treasury shares",
        "documentation": "Issuance and purchase of treasury shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IssuanceAndRepurchaseOfBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IssuanceAndRepurchaseOfBorrowings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issuance and repurchase of borrowings",
        "negatedLabel": "Issuance and repurchase of borrowings",
        "documentation": "Issuance and repurchase of borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_IssuanceRepurchaseAndCouponsOfPerpetualSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "IssuanceRepurchaseAndCouponsOfPerpetualSecurities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issuance, repurchase and coupons of perpetual securities",
        "terseLabel": "Coupons on perpetual securities",
        "documentation": "Issuance, repurchase and coupons of perpetual securities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_IssuedCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IssuedCapital",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 76.0
      },
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issued capital",
        "verboseLabel": "Share capital",
        "totalLabel": "Total share capital",
        "terseLabel": "Issued capital"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal value of capital issued."
       }
      }
     },
     "auth_ref": [
      "r780",
      "r787"
     ]
    },
    "ifrs-full_IssuedCapitalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "IssuedCapitalMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Issued capital [member]",
        "terseLabel": "Share capital [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing issued capital."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "aeg_JackMcGarryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "JackMcGarryMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Jack McGarry [Member]",
        "documentation": "Jack McGarry."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_JointVenturesAndAssociatesEliminationsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "JointVenturesAndAssociatesEliminationsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures and associates eliminations [member]",
        "verboseLabel": "JVs and associates eliminations [member]",
        "documentation": "Joint ventures and associates eliminations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_JointVenturesAndAssociatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "JointVenturesAndAssociatesMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures and associates [member]",
        "verboseLabel": "JV and associates [member]",
        "documentation": "Joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_JointVenturesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "JointVenturesAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures [axis]",
        "terseLabel": "Joint ventures [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r171",
      "r575"
     ]
    },
    "ifrs-full_JointVenturesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "JointVenturesDomain",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures [domain]",
        "terseLabel": "Joint ventures [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Joint ventures' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r171",
      "r575"
     ]
    },
    "ifrs-full_JointVenturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "JointVenturesMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total for all joint ventures [member]",
        "terseLabel": "Joint ventures [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for joint arrangements whereby the parties that have joint control of the arrangement have rights to the net assets of the arrangement."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r171",
      "r575"
     ]
    },
    "ifrs-full_JointVenturesWhereEntityIsVenturerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "JointVenturesWhereEntityIsVenturerMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Joint ventures where entity is venturer [member]",
        "terseLabel": "Aegon legal stake in the joint ventures [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for joint ventures in which the entity is a joint venturer. A venturer is a party to a joint venture and has joint control over that joint venture. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r40",
      "r485"
     ]
    },
    "aeg_JuneEighthTwoThousandAndFiveAfterMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "JuneEighthTwoThousandAndFiveAfterMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "June Eighth Two Thousand And Five After [Member]",
        "terseLabel": "After June\u00a08, 2025"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_JuniorPerpetualCapitalSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "JuniorPerpetualCapitalSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Junior Perpetual Capital Securities [member]",
        "terseLabel": "Junior perpetual capital securities [member]",
        "documentation": "Junior perpetual capital securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_KarenFawcettMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "KarenFawcettMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Karen Fawcett [Member]",
        "documentation": "Karen Fawcett."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_KeyManagementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "KeyManagementMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key Management [Member]",
        "terseLabel": "Key management [member]",
        "documentation": "Key management."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_KeyManagementPersonnelCompensation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "KeyManagementPersonnelCompensation",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Key management personnel compensation"
       }
      }
     },
     "auth_ref": [
      "r37",
      "r482"
     ]
    },
    "aeg_LaBanquePostaleAssetManagementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LaBanquePostaleAssetManagementMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "La Banque Postale Asset Management [member]",
        "definitionGuidance": "La Banque Postale Asset Management (LBPAM) [member]",
        "documentation": "La Banque Postale Asset Mangement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LapseRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LapseRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lapse Rates [Member]",
        "terseLabel": "Lapse rates [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanFiveYearsAndNotLaterThanSevenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanFiveYearsAndNotLaterThanSevenYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than five years and not later than seven years [member]",
        "terseLabel": ">\u00a05\u00a0years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than five years and not later than seven years."
       }
      }
     },
     "auth_ref": [
      "r742",
      "r752"
     ]
    },
    "ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanFiveYearsAndNotLaterThanTenYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than five years and not later than ten years [member]",
        "verboseLabel": "5-10 years [member]",
        "terseLabel": "Over 5 through 10 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than five years and not later than ten years."
       }
      }
     },
     "auth_ref": [
      "r742",
      "r752",
      "r948"
     ]
    },
    "ifrs-full_LaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanFiveYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than five years [member]",
        "terseLabel": "Later than 5 years [member]",
        "presentationGuidance": "Remaining terms longer than 5 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than five years."
       }
      }
     },
     "auth_ref": [
      "r197",
      "r198",
      "r257",
      "r425",
      "r429",
      "r742",
      "r747",
      "r752"
     ]
    },
    "ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanFourYearsAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than four years and not later than five years [member]",
        "terseLabel": "Later than four years and not later than five years [member]",
        "verboseLabel": "4-5\u00a0years [member]",
        "presentationGuidance": "Remaining terms 4 - 5 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than four years and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r197",
      "r198",
      "r257",
      "r742",
      "r752",
      "r948"
     ]
    },
    "ifrs-full_LaterThanOneMonthAndNotLaterThanThreeMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanOneMonthAndNotLaterThanThreeMonthsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one month and not later than three months [member]",
        "terseLabel": "1-3\u00a0months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one month and not later than three months."
       }
      }
     },
     "auth_ref": [
      "r739",
      "r745",
      "r752"
     ]
    },
    "ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanOneYearAndNotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year and not later than five years [member]",
        "terseLabel": "1-5 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year and not later than five years."
       }
      }
     },
     "auth_ref": [
      "r424",
      "r428",
      "r741",
      "r752"
     ]
    },
    "ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanOneYearAndNotLaterThanTwoYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year and not later than two years [member]",
        "verboseLabel": "Later than one year and not later than two years [member]",
        "presentationGuidance": "1-2\u00a0years [member]",
        "definitionGuidance": "Remaining terms 1 - 2 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year and not later than two years."
       }
      }
     },
     "auth_ref": [
      "r197",
      "r198",
      "r257",
      "r742",
      "r752",
      "r948"
     ]
    },
    "ifrs-full_LaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanOneYearMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than one year [member]",
        "verboseLabel": "Later than one year [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than one year."
       }
      }
     },
     "auth_ref": [
      "r641"
     ]
    },
    "ifrs-full_LaterThanTenYearsAndNotLaterThanFifteenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanTenYearsAndNotLaterThanFifteenYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than ten years and not later than fifteen years [member]",
        "terseLabel": "Over 10 through 15 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than ten years and not later than fifteen years."
       }
      }
     },
     "auth_ref": [
      "r742",
      "r752"
     ]
    },
    "aeg_LaterThanTenYearsAndNotLaterThanTwentyYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LaterThanTenYearsAndNotLaterThanTwentyYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later Than Ten Years And Not Later Than Twenty Years [Member]",
        "terseLabel": "10-20\u00a0years [member]",
        "documentation": "Later than ten years and not later than twenty years."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanTenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanTenYearsMember",
     "presentation": [
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than ten years [member]",
        "terseLabel": "Over 10 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than ten years."
       }
      }
     },
     "auth_ref": [
      "r742",
      "r752",
      "r948"
     ]
    },
    "ifrs-full_LaterThanThreeMonthsAndNotLaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanThreeMonthsAndNotLaterThanOneYearMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three months and not later than one year [member]",
        "terseLabel": "3-12\u00a0months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three months and not later than one year."
       }
      }
     },
     "auth_ref": [
      "r740"
     ]
    },
    "ifrs-full_LaterThanThreeMonthsAndNotLaterThanSixMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanThreeMonthsAndNotLaterThanSixMonthsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three months and not later than six months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three months and not later than six months."
       }
      }
     },
     "auth_ref": [
      "r742",
      "r746",
      "r752"
     ]
    },
    "ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanThreeYearsAndNotLaterThanFourYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than three years and not later than four years [member]",
        "terseLabel": "Later than three years and not later than four years [member]",
        "verboseLabel": "3-4\u00a0years [member]",
        "presentationGuidance": "Remaining terms 3 - 4 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than three years and not later than four years."
       }
      }
     },
     "auth_ref": [
      "r197",
      "r198",
      "r257",
      "r742",
      "r752",
      "r948"
     ]
    },
    "aeg_LaterThanTwentyYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LaterThanTwentyYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later Than Twenty Years [Member]",
        "verboseLabel": "Later than 20 years [member]",
        "documentation": "Later than twenty years member."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LaterThanTwoYearsAndNotLaterThanThreeYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Later than two years and not later than three years [member]",
        "terseLabel": "Later than two years and not later than three years [member]",
        "verboseLabel": "2-3\u00a0years [member]",
        "presentationGuidance": "Remaining terms 2 - 3 years [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of later than two years and not later than three years."
       }
      }
     },
     "auth_ref": [
      "r197",
      "r198",
      "r257",
      "r742",
      "r752",
      "r948"
     ]
    },
    "ifrs-full_LeaseLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LeaseLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lease liabilities",
        "terseLabel": "Lease liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration."
       }
      }
     },
     "auth_ref": [
      "r192"
     ]
    },
    "dei_LegalEntityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "LegalEntityAxis",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal Entity [Axis]",
        "documentation": "The set of legal entities associated with a report."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LegalProceedingsProvision": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LegalProceedingsProvision",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal proceedings provision",
        "verboseLabel": "Litigation provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of provision for legal proceedings. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r692",
      "r693"
     ]
    },
    "aeg_LegalReserveFctrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LegalReserveFctrMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal reserve FCTR [member]",
        "terseLabel": "Legal reserve FCTR [member]",
        "documentation": "Legal reserve FCTR [member]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LegalReserveGroupCompaniesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LegalReserveGroupCompaniesMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal reserve group companies [member]",
        "terseLabel": "Legal reserve group companies [member]",
        "documentation": "Legal reserve group companies [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LegalReservesForeignCurrencyTranslationReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LegalReservesForeignCurrencyTranslationReserve",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 74.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal Reserves Foreign Currency Translation Reserve",
        "terseLabel": "Legal reserves \u2013 foreign currency translation reserve",
        "documentation": "Legal reserves foreign currency translation reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LegalReservesInRespectOfGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LegalReservesInRespectOfGroupCompanies",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 73.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal Reserves In Respect Of Group Companies",
        "terseLabel": "Legal reserves in respect of group companies",
        "documentation": "Legal reserves in respect of group companies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LegalReservesRevaluationAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LegalReservesRevaluationAccount",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 69.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal Reserves Revaluation Account",
        "terseLabel": "Legal reserves revaluation account",
        "documentation": "Legal reserves revaluation account."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LegalreservesrevaluationaccountMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LegalreservesrevaluationaccountMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Legal reserves revaluation account [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LessThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LessThanFiveYearsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Less than five years [member]",
        "terseLabel": "Less than 5 years [member]",
        "documentation": "Less than five years."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LetterOfCreditArrangements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LetterOfCreditArrangements",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Letter Of Credit Arrangements",
        "terseLabel": "Due and punctual payment of payables due under letter of credit agreements",
        "documentation": "Letter of credit arrangements."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LettersOfCredit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LettersOfCredit",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": "aeg_Collateral",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Letters of credit",
        "negatedTerseLabel": "Letters of credit / guarantees",
        "documentation": "Letters of credit."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_Level1OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Level1OfFairValueHierarchyMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level 1 of fair value hierarchy [member]",
        "terseLabel": "Level I [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can access at the measurement date."
       }
      }
     },
     "auth_ref": [
      "r30",
      "r77",
      "r80",
      "r176",
      "r497",
      "r582"
     ]
    },
    "ifrs-full_Level2OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Level2OfFairValueHierarchyMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level 2 of fair value hierarchy [member]",
        "terseLabel": "Level II [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly."
       }
      }
     },
     "auth_ref": [
      "r77",
      "r80",
      "r176",
      "r497",
      "r582"
     ]
    },
    "ifrs-full_Level3OfFairValueHierarchyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Level3OfFairValueHierarchyMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level 3 of fair value hierarchy [member]",
        "terseLabel": "Level III [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a category of the fair value hierarchy where inputs to the valuation techniques are unobservable inputs for the asset or liability. Unobservable inputs are inputs for which market data are not available and that are developed using the best information available about the assumptions that the market participants would use when pricing the asset or liability."
       }
      }
     },
     "auth_ref": [
      "r77",
      "r80",
      "r176",
      "r497",
      "r582"
     ]
    },
    "aeg_LevelAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LevelAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level [Axis]",
        "documentation": "Level"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LevelDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LevelDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Level [Domain]",
        "documentation": "Level."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LevelsOfFairValueHierarchyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LevelsOfFairValueHierarchyAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Levels of fair value hierarchy [axis]",
        "terseLabel": "Levels of fair value hierarchy [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r30",
      "r176",
      "r582"
     ]
    },
    "ifrs-full_LevelsOfFairValueHierarchyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LevelsOfFairValueHierarchyDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Levels of fair value hierarchy [domain]",
        "terseLabel": "Levels of fair value hierarchy [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all levels of the fair value hierarchy. It also represents the standard value for the 'Levels of fair value hierarchy' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r30",
      "r176",
      "r582"
     ]
    },
    "ifrs-full_Liabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Liabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_EquityAndLiabilities",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities",
        "totalLabel": "Total liabilities",
        "verboseLabel": "Total liabilities",
        "periodStartLabel": "Beginning balance",
        "terseLabel": "Liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits."
       }
      }
     },
     "auth_ref": [
      "r175",
      "r176",
      "r183",
      "r364",
      "r369",
      "r581",
      "r582",
      "r638"
     ]
    },
    "ifrs-full_LiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesAbstract",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities [Abstract]",
        "terseLabel": "Liabilities"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LiabilitiesForIncurredClaimsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilitiesForIncurredClaimsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities for incurred claims [member]",
        "terseLabel": "Liability for incurred claims [member]",
        "verboseLabel": "LFIC [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an entity\u2019s obligation to: (a) investigate and pay valid claims for insured events that have already occurred, including events that have occurred but for which claims have not been reported, and other incurred insurance expenses; and (b) pay amounts that are not included in (a) and that relate to: (i) insurance contract services that have already been provided; or (ii) any investment components or other amounts that are not related to the provision of insurance contract services and that are not in the liability for remaining coverage."
       }
      }
     },
     "auth_ref": [
      "r201"
     ]
    },
    "ifrs-full_LiabilityAssetOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LiabilityAssetOfDefinedBenefitPlans",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability (asset)",
        "negatedLabel": "Defined benefit plans",
        "negatedPeriodStartLabel": "Beginning Balance",
        "negatedPeriodEndLabel": "Ending Balance",
        "negatedTotalLabel": "Ending Balance",
        "verboseLabel": "Plan benefit liability"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r20",
      "r471"
     ]
    },
    "aeg_LifeHealthLiabilityInvestmentRiskHedgeProgramMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LifeHealthLiabilityInvestmentRiskHedgeProgramMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Life Health Liability Investment Risk Hedge Program [Member]",
        "terseLabel": "Life &amp; Health Liability Investment Risk Hedge Program [Member]",
        "documentation": "Life health liability investment risk hedge program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LifeInsuranceForceMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LifeInsuranceForceMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Life Insurance Force [Member]",
        "terseLabel": "Life insurance in force [member]",
        "documentation": "Life insurance force."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LifeInsuranceMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LifeInsuranceMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Life Insurance [Member]",
        "terseLabel": "Life [member]",
        "documentation": "Life insurance."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LifetimeExpectedCreditLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LifetimeExpectedCreditLossesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lifetime expected credit losses [member]",
        "terseLabel": "Lifetime ECL credit impaired [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the expected credit losses that result from all possible default events over the expected life of a financial instrument. [Refer: Type of measurement of expected credit losses [domain]]"
       }
      }
     },
     "auth_ref": [
      "r328",
      "r335",
      "r564",
      "r570"
     ]
    },
    "aeg_LoanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoanMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loan [Member]",
        "terseLabel": "Loans [member]",
        "documentation": "Loan."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LoansAndReceivablesCategoryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LoansAndReceivablesCategoryMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans and receivables, category [member]",
        "terseLabel": "Loans [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the loans and receivables category of financial assets. [Refer: Loans and receivables]"
       }
      }
     },
     "auth_ref": [
      "r604"
     ]
    },
    "aeg_LoansAtAmortisedCost": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansAtAmortisedCost",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans At Amortised Cost",
        "terseLabel": "Amortized cost, Loans",
        "documentation": "Loans at amortised cost."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansFromGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansFromGroupCompanies",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 31.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans From Group Companies",
        "terseLabel": "Loans from group companies",
        "documentation": "Loans from group companies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansHeldAtAmortizedCostMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansHeldAtAmortizedCostMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans held at amortized cost [Member]",
        "terseLabel": "Loans - held at amortized cost [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans Investment [Member]",
        "terseLabel": "Loans [Member]",
        "documentation": "Loans investment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansReceivable1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansReceivable1Member",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInFairValueHaveBeenRecognizedForTheseInvestmentsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans Receivable 1 [member]",
        "terseLabel": "Loans [member]",
        "documentation": "Loans receivable."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansToGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansToGroupCompanies",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 60.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans To Group Companies",
        "terseLabel": "Loans to group companies",
        "documentation": "Loans to group companies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansToSubsidiariesJointVenturesAndAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansToSubsidiariesJointVenturesAndAssociates",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans To Subsidiaries Joint Ventures And Associates",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "documentation": "Loans to subsidiaries joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansToSubsidiariesJointVenturesAndAssociatesAdditionsRepayments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansToSubsidiariesJointVenturesAndAssociatesAdditionsRepayments",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans to Subsidiaries, Joint Ventures and Associates, Additions (repayments)",
        "terseLabel": "Additions / (redemptions)",
        "documentation": "Loans to Subsidiaries, Joint Ventures and Associates, Additions (repayments)"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LoansToSubsidiariesJointVenturesAndAssociatesNetExchangeDifferences": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LoansToSubsidiariesJointVenturesAndAssociatesNetExchangeDifferences",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loans To Subsidiaries Joint Ventures And Associates Net Exchange Differences",
        "terseLabel": "Net exchange differences",
        "documentation": "Loans to subsidiaries joint ventures and associates net exchange differences."
       }
      }
     },
     "auth_ref": []
    },
    "dei_LocalPhoneNumber": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "LocalPhoneNumber",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Local Phone Number",
        "documentation": "Local phone number for entity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermBorrowing": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermBorrowing",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 40.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long term borrowing",
        "verboseLabel": "Long-term borrowings",
        "documentation": "Long-term borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermBorrowingsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermBorrowingsAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Borrowings At Fair Value",
        "positiveLabel": "Non-current",
        "documentation": "Long term borrowings at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermCareLiabilityHedgeProgramMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermCareLiabilityHedgeProgramMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Care Liability Hedge Program [Member]",
        "terseLabel": "Long Term Care (LTC) Liability Hedge Program [Member]",
        "documentation": "Long term care liability hedge program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermCareMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermCareMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Care [Member]",
        "terseLabel": "Long-Term Care [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyFiveMember",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Incentive And Variable Compensation Identified Staff Performance Year Two Thousand And Twenty Five [Member]",
        "terseLabel": "2025 [member]",
        "documentation": "Long term incentive and variable compensation identified staff performance year two thousand and twenty five."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyFourMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyFourMember",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Incentive And Variable Compensation Identified Staff Performance Year Two Thousand And Twenty Four [Member]",
        "terseLabel": "2024 [member]",
        "verboseLabel": "2024 [member]",
        "documentation": "Long term incentive and variable compensation identified staff performance year two thousand and twenty four."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyOneMember",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long term Incentive And Variable Compensation Identified Staff Performance Year Two Thousand And Twenty One [Member]",
        "terseLabel": "2021 [member]",
        "documentation": "Long term incentive and variable compensation identified staff performance year two thousand and twenty one [Member]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyThreeMember",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Incentive And Variable Compensation Identified Staff Performance Year Two Thousand And Twenty Three [Member]",
        "terseLabel": "2023 [member]",
        "verboseLabel": "2023 [member]",
        "documentation": "Long term incentive and variable compensation identified staff performance year two thousand and twenty three member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LongTermIncentiveAndVariableCompensationIdentifiedStaffPerformanceYearTwoThousandAndTwentyTwoMember",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Long Term Incentive And Variable Compensation Identified Staff Performance Year Two Thousand And Twenty Two [Member]",
        "terseLabel": "2022 [member]",
        "documentation": "Long term incentive and variable compensation identified staff performance year two thousand and twenty two."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LongtermBorrowings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LongtermBorrowings",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current portion of non-current borrowings",
        "verboseLabel": "Long-term borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The non-current portion of non-current borrowings. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_LossAllowancesAndReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LossAllowancesAndReserves",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Allowances and Reserves",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "documentation": "Loss Allowances and Reserves."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_LossComponentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "LossComponentMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss component [member]",
        "terseLabel": "LC [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the loss component of the liability for remaining coverage. An entity shall establish (or increase) a loss component of the liability for remaining coverage for an onerous group depicting the losses recognised applying paragraphs 47\u201348 of IFRS 17. The loss component determines the amounts that are presented in profit or loss as reversals of losses on onerous groups and are consequently excluded from the determination of insurance revenue. [Refer: Insurance contracts [domain]; Net liabilities or assets for remaining coverage excluding loss component [member]]"
       }
      }
     },
     "auth_ref": [
      "r199"
     ]
    },
    "aeg_LossRecoveryComponentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LossRecoveryComponentMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Loss Recovery Component [Member]",
        "terseLabel": "LRC [member]",
        "documentation": "Loss recovery component."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LowerGroupSolvencyTwoRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LowerGroupSolvencyTwoRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Lower Group Solvency Two Ratio",
        "terseLabel": "Lower group solvency two ratio",
        "documentation": "Lower group solvency two ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LtcgMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LtcgMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "LTCG [Member]",
        "documentation": "LTCG."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_LuxembourgGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "LuxembourgGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Luxembourg Government bonds [member]",
        "terseLabel": "Luxembourg government bonds [member]",
        "documentation": "Luxembourg government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MajorComponentsOfTaxExpenseIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Major components of tax expense (income) [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MajorCustomersAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MajorCustomersAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Major customers [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r376"
     ]
    },
    "ifrs-full_MajorCustomersDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MajorCustomersDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Major customers [domain]",
        "terseLabel": "Major customers [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for customers. It also represents the standard value for the 'Major customers' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r376"
     ]
    },
    "aeg_MajorTreasuryShareTransactionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MajorTreasuryShareTransactionsMember",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Major Treasury Share Transactions [Member]",
        "terseLabel": "Major treasury share transactions [member]",
        "documentation": "Major treasury share transactions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MarginalBasisPoints": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MarginalBasisPoints",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Marginal basis points",
        "terseLabel": "Marginal basis points",
        "documentation": "Marginal basis points."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MarkAEllmanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MarkAEllmanMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mark A Ellman [Member]",
        "documentation": "Mark A Ellman."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MarketRiskConcentrationsInShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MarketRiskConcentrationsInShares",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Market Risk Concentrations In Shares",
        "terseLabel": "Market risk concentrations - shares",
        "documentation": "Market risk concentrations in shares."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MarketsOfCustomersAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MarketsOfCustomersAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Markets of customers [axis]",
        "terseLabel": "Markets of customers [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r716",
      "r761"
     ]
    },
    "ifrs-full_MarketsOfCustomersDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MarketsOfCustomersDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Markets of customers [domain]",
        "terseLabel": "Markets of customers [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all markets of customers. It also represents the standard value for the 'Markets of customers' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r716",
      "r761"
     ]
    },
    "aeg_MaterialaccountingpoliciesinformationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MaterialaccountingpoliciesinformationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Material accounting policies information [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MaterialaccountingpoliciesinformationLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MaterialaccountingpoliciesinformationLineItems",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Material accounting policies information [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MaterialaccountingpoliciesinformationTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MaterialaccountingpoliciesinformationTable",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Material accounting policies information [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MaturityAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaturityAxis",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maturity [axis]",
        "terseLabel": "Maturity [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r197",
      "r198",
      "r241",
      "r242",
      "r248",
      "r257",
      "r303",
      "r340",
      "r415",
      "r418",
      "r426",
      "r430",
      "r561",
      "r642",
      "r689",
      "r742"
     ]
    },
    "ifrs-full_MaturityDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaturityDomain",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maturity [domain]",
        "terseLabel": "Maturity [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated time bands. It also represents the standard value for the 'Maturity' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r190",
      "r197",
      "r198",
      "r241",
      "r242",
      "r248",
      "r257",
      "r303",
      "r415",
      "r418",
      "r426",
      "r430",
      "r561",
      "r642",
      "r689",
      "r742",
      "r748"
     ]
    },
    "ifrs-full_MaximumExposureToCreditRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MaximumExposureToCreditRisk",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": "aeg_Collateral",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum exposure to credit risk",
        "terseLabel": "Maximum exposure to credit risk"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r332"
     ]
    },
    "aeg_MaximumExposureToCurrencyRisk": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MaximumExposureToCurrencyRisk",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum Exposure To Currency Risk",
        "terseLabel": "Maximum exposure to currency risk",
        "documentation": "Maximum exposure to currency risk."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_MeasureAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MeasureAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure [Axis]",
        "terseLabel": "Measure:"
       }
      }
     },
     "auth_ref": [
      "r852"
     ]
    },
    "ecd_MeasureName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MeasureName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measure Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r852"
     ]
    },
    "ifrs-full_MeasurementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MeasurementAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement [axis]",
        "terseLabel": "Measurement [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r98",
      "r111",
      "r175",
      "r518",
      "r581"
     ]
    },
    "ifrs-full_MeasurementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MeasurementDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Measurement [domain]",
        "terseLabel": "Measurement [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of measurement. It also represents the standard value for the 'Measurement' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r98",
      "r111",
      "r175",
      "r518",
      "r581"
     ]
    },
    "aeg_MergerAndAcquisitionTransactionsAboveWhichAffirmativeVoteOfIndependentNomineeIsRequired": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MergerAndAcquisitionTransactionsAboveWhichAffirmativeVoteOfIndependentNomineeIsRequired",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Merger And Acquisition Transactions Above Which Affirmative Vote Of Independent Nominee Is Required",
        "verboseLabel": "Merger and acquisition transactions above which affirmative vote of independent nominee is required",
        "documentation": "Merger and acquisition transactions above which affirmative vote of independent nominee is required."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MethodsOfGenerationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MethodsOfGenerationAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Methods of generation [axis]",
        "terseLabel": "Methods of generation [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r92",
      "r508"
     ]
    },
    "ifrs-full_MethodsOfGenerationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MethodsOfGenerationDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Methods of generation [domain]",
        "terseLabel": "Methods of generation [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all methods of generation. It also represents the standard value for the 'Methods of generation' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r92",
      "r508"
     ]
    },
    "ifrs-full_MiscellaneousNoncurrentLiabilitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MiscellaneousNoncurrentLiabilitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Miscellaneous non-current liabilities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MiscellaneousOtherOperatingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MiscellaneousOtherOperatingExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Miscellaneous other operating expense",
        "negatedTotalLabel": "Total"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_MiscellaneousOtherProvisionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MiscellaneousOtherProvisionsMember",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Miscellaneous other provisions [member]",
        "terseLabel": "Other provisions [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for miscellaneous other provisions. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r86",
      "r503"
     ]
    },
    "ecd_MnpiDiscTimedForCompValFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MnpiDiscTimedForCompValFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "MNPI Disclosure Timed for Compensation Value [Flag]",
        "terseLabel": "MNPI Disclosure Timed for Compensation Value"
       }
      }
     },
     "auth_ref": [
      "r872"
     ]
    },
    "aeg_ModificationOfLeaseContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ModificationOfLeaseContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Modification Of Lease Contracts",
        "terseLabel": "Modification of lease contracts",
        "documentation": "Modification of lease contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketAndOtherShorttermInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketAndOtherShorttermInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money market and other short-term instruments [member]",
        "verboseLabel": "Money market and other short-term investments [member]",
        "documentation": "Money market and other short-term instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketAndOtherShorttermInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketAndOtherShorttermInvestmentsMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money Market And Other ShortTerm Investments [Member]",
        "terseLabel": "Money market and other short-term investments [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketAndShortTermInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketAndShortTermInvestmentsMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money Market And Short Term Investments [Member]",
        "terseLabel": "Money markets and other short-term investments [Member]",
        "documentation": "Money market and short term investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketInvestmentsClassifiedAsCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketInvestmentsClassifiedAsCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail": {
       "parentTag": "ifrs-full_CashAndCashEquivalents",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money market investments, classified as cash equivalents",
        "terseLabel": "Money market investments",
        "documentation": "Money market investments, classified as cash equivalents."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money market securities [member]",
        "terseLabel": "Money market investments [member]",
        "documentation": "Money market securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketsAndOtherShortTermInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketsAndOtherShortTermInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money markets and other short term instruments [member]",
        "terseLabel": "Money markets and other short term instruments [member]",
        "documentation": "Money markets and other short term instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MoneyMarketsAndOtherShorttermInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MoneyMarketsAndOtherShorttermInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Money Markets and other short-term investment [member]",
        "documentation": "Money Markets and other short-term investment [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MongeralAegonSegurosEPrevidenciaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MongeralAegonSegurosEPrevidenciaSaMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mongeral Aegon Seguros e Previdencia SA [Member]",
        "terseLabel": "Mongeral Aegon, Seguros e Previdencia S.A. [member]",
        "documentation": "Mongeral Aegon, Seguros e Previdencia S.A."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MorbidityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MorbidityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Morbidity Rates [Member]",
        "terseLabel": "Morbidity rates [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MortalityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MortalityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortality rates [member]",
        "terseLabel": "Mortality rates [member]",
        "documentation": "Mortality rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MortgageAndAssetBackedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MortgageAndAssetBackedMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortgage and asset backed [member]",
        "terseLabel": "Mortgage backed [member]",
        "documentation": "Mortgage and asset backed."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MortgageLoansCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MortgageLoansCommitmentsMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortgage Loans Commitments [member]",
        "terseLabel": "Mortgage loans [member]",
        "documentation": "Mortgage loans commitments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MortgageLoansExpectedCreditLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MortgageLoansExpectedCreditLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": "aeg_ExpectedCreditLoss",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortgage Loans Expected Credit Loss",
        "terseLabel": "Mortgage loans",
        "documentation": "Mortgage loans expected credit loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortgage loans [member]",
        "terseLabel": "Mortgage loans [member]",
        "documentation": "Mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_MortgagesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "MortgagesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail",
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mortgages [member]",
        "verboseLabel": "Mortgage loans [member]",
        "disclosureGuidance": "Loans measured at amortized cost [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of financial assets that represents loans to finance the purchase of assets where the asset acts as collateral to secure the loan."
       }
      }
     },
     "auth_ref": [
      "r737",
      "r749",
      "r753"
     ]
    },
    "aeg_MovementInForeignCurrencyTranslationAndNetForeignInvestmentHedgingReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MovementInForeignCurrencyTranslationAndNetForeignInvestmentHedgingReserves",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Movement In Foreign Currency Translation And Net Foreign Investment Hedging Reserves",
        "terseLabel": "Movements in foreign currency translation and net foreign investment hedging reserves",
        "documentation": "Movement in foreign currency translation and net foreign investment hedging reserves."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MovementOnCurrencyTranslationAndHedgesOfNetInvestmentsInForeignOperationsBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MovementOnCurrencyTranslationAndHedgesOfNetInvestmentsInForeignOperationsBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 22.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 25.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Movement On Currency Translation And Hedges Of Net Investments In Foreign Operations Before Tax",
        "terseLabel": "Movements in foreign currency translation and net foreign investment hedging reserves",
        "verboseLabel": "Movements in foreign currency translation and net foreign investment hedging reserves",
        "definitionGuidance": "Foreign currency translation differences and movement in foreign investment hedging reserves",
        "documentation": "Movement On Currency Translation And Hedges Of Net Investments In Foreign Operations Before Tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MovementsRelatedToFairValueHedgesArisingFromReconciliationOfDebtFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MovementsRelatedToFairValueHedgesArisingFromReconciliationOfDebtFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Movements related to fair value hedges arising from reconciliation of debt from financing activities",
        "terseLabel": "Fair value hedge movements",
        "documentation": "Movements related to fair value hedges arising from reconciliation of debt from financing activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_MrFrieseMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "MrFrieseMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Mr Friese [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_MtrlTermsOfTrdArrTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "MtrlTermsOfTrdArrTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Material Terms of Trading Arrangement [Text Block]",
        "terseLabel": "Material Terms of Trading Arrangement"
       }
      }
     },
     "auth_ref": [
      "r880"
     ]
    },
    "country_NL": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2025",
     "localname": "NL",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "NETHERLANDS",
        "terseLabel": "The Netherlands [member]",
        "verboseLabel": "Netherlands [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NameOfAssociate": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NameOfAssociate",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Name of associate",
        "terseLabel": "Name of associate"
       }
      },
      "en": {
       "role": {
        "documentation": "The name of an associate. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r53",
      "r58",
      "r147"
     ]
    },
    "aeg_NameOfHoldingCompanyUnderBusinessCombinationAgreementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NameOfHoldingCompanyUnderBusinessCombinationAgreementAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Name of holding company under business combination agreement [Axis]",
        "documentation": "Name of holding company under business combination agreement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NameOfHoldingCompanyUnderBusinessCombinationAgreementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NameOfHoldingCompanyUnderBusinessCombinationAgreementDomain",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Name of holding company under business combination agreement [Domain]",
        "documentation": "Name of holding company under business combination agreement."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NameOfJointVenture": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NameOfJointVenture",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Name of joint venture",
        "terseLabel": "Name of joint venture"
       }
      },
      "en": {
       "role": {
        "documentation": "The name of a joint venture. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r53",
      "r58",
      "r147"
     ]
    },
    "ifrs-full_NameOfSubsidiary": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NameOfSubsidiary",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Name of subsidiary",
        "terseLabel": "Name of subsidiary"
       }
      },
      "en": {
       "role": {
        "documentation": "The name of a subsidiary. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r53",
      "r58",
      "r141",
      "r145"
     ]
    },
    "ecd_NamedExecutiveOfficersFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NamedExecutiveOfficersFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Named Executive Officers, Footnote [Text Block]",
        "terseLabel": "Named Executive Officers, Footnote"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "aeg_NasdaqMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NasdaqMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nasdaq [member]",
        "terseLabel": "Nasdaq [member]",
        "documentation": "Nasdaq."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NationwideBuildingSocietyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NationwideBuildingSocietyMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nationwide Building Society [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NegativeImpactRecognizedInShareBuyBack": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NegativeImpactRecognizedInShareBuyBack",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Negative Impact Recognized In Share Buy Back",
        "documentation": "Negative impact recognized in share buy back."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NetAssetValueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetAssetValueMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net asset value [member]",
        "terseLabel": "Net asset value [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a valuation technique that compares the value of assets and liabilities."
       }
      }
     },
     "auth_ref": [
      "r708",
      "r713"
     ]
    },
    "ifrs-full_NetAssetsLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetAssetsLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets (liabilities)",
        "terseLabel": "Net assets",
        "verboseLabel": "Net assets of joint venture as presented above"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets less the amount of liabilities."
       }
      }
     },
     "auth_ref": [
      "r704",
      "r948"
     ]
    },
    "aeg_NetAssetsLiabilitiesExcludingGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetAssetsLiabilitiesExcludingGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net assets liabilities excluding goodwill",
        "terseLabel": "Net assets of joint venture excluding goodwill",
        "documentation": "Net assets liabilities excluding goodwill."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetCashFlows": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetCashFlows",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfCashFlowsAreExpectedToOccurDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net cash flows",
        "totalLabel": "Net cash flows",
        "documentation": "Net cash flows."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetCreditExposure": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetCreditExposure",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfGroupLimitsPerCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Credit Exposure",
        "verboseLabel": "Net exposure",
        "terseLabel": "Group limits per credit rating",
        "documentation": "Group level long term counterparty exposure limits per credit rating."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NetDefinedBenefitLiabilityAssetAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetDefinedBenefitLiabilityAssetAxis",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability (asset) [axis]",
        "terseLabel": "Net defined benefit liability (asset) [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r20",
      "r471"
     ]
    },
    "ifrs-full_NetDefinedBenefitLiabilityAssetDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetDefinedBenefitLiabilityAssetDomain",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability (asset) [domain]",
        "terseLabel": "Net defined benefit liability (asset) [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the net defined benefit liability (asset). It also represents the standard value for the 'Net defined benefit liability (asset)' axis if no other member is used. [Refer: Net defined benefit liability (asset)]"
       }
      }
     },
     "auth_ref": [
      "r20",
      "r471"
     ]
    },
    "aeg_NetExchangeDifferenceAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetExchangeDifferenceAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Exchange Difference Assets",
        "terseLabel": "Net exchange difference",
        "documentation": "Net exchange difference assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetExchangeDifferenceInReconciliationOfDebtFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetExchangeDifferenceInReconciliationOfDebtFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net exchange difference in reconciliation of debt from financing activities",
        "terseLabel": "Net exchange difference",
        "documentation": "Net exchange difference in reconciliation of debt from financing activities"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetExchangeDifferencesDeferredCostsArisingFromInsuranceContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetExchangeDifferencesDeferredCostsArisingFromInsuranceContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredExpensesSummaryOfDeferredCostsArisingFromInsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net exchange differences deferred costs arising from insurance contracts",
        "negatedLabel": "Net exchange differences",
        "documentation": "Net exchange differences deferred costs arising from insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetExposureAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetExposureAtFairValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Exposure At Fair Value",
        "terseLabel": "Net exposure",
        "documentation": "Net exposure at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetExposureOfAssetsPledgedForGeneralAccountAndContingentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetExposureOfAssetsPledgedForGeneralAccountAndContingentLiabilities",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Exposure Of Assets Pledged For General Account And Contingent Liabilities",
        "terseLabel": "Net exposure",
        "documentation": "Net exposure of assets pledged for general account and contingent liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetExposureOfAssetsPledgedForRepurchaseAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetExposureOfAssetsPledgedForRepurchaseAgreements",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Exposure Of Assets Pledged For Repurchase Agreements",
        "terseLabel": "Net exposure",
        "documentation": "Net exposure of assets pledged for repurchase agreements."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangeOfDerivativesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangeOfDerivativesAbstract",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net fair value change of derivatives [abstract]",
        "verboseLabel": "Net fair value change of derivatives",
        "terseLabel": "Net fair value change of derivatives",
        "documentation": "Net fair value change of derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangeOfFinancialInvestmentAtFairValueThroughProfitOrLossOtherThanDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangeOfFinancialInvestmentAtFairValueThroughProfitOrLossOtherThanDerivatives",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Change Of Financial Investment At Fair Value Through Profit Or Loss Other Than Derivatives",
        "terseLabel": "Net fair value change of financial investments at fair value through profit or loss, other than derivatives",
        "documentation": "Net fair value change of financial investment at fair value through profit or loss other than derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangeOfFinancialInvestmentsAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangeOfFinancialInvestmentsAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Change of Financial Investments At Fair Value Through Profit Or Loss",
        "verboseLabel": "Net fair value change of financial investments at FVPL (excl. derivatives)",
        "documentation": "Net Fair Value Change of Financial Investments at fair value through profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangeOfFinancialInvestmentsAtFairValueThroughProfitOrLossOtherThanDerivativesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangeOfFinancialInvestmentsAtFairValueThroughProfitOrLossOtherThanDerivativesAbstract",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Change Of Financial Investments At Fair Value Through Profit Or Loss, Other Than Derivatives [Abstract]",
        "verboseLabel": "Net fair value change of financial investments at fair value through profit or loss, other than derivatives",
        "terseLabel": "Net fair value change of financial investments at fair value through profit or loss, other than derivatives",
        "documentation": "Net Fair Value Change Of Financial Investments At Fair Value Through Profit Or Loss, Other Than Derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangeOnInvestmentsInRealState": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangeOnInvestmentsInRealState",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Change On Investments In Real State",
        "terseLabel": "Net fair value change on investments in real estate",
        "documentation": "Net fair value change on investments in real state."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangesOfDerivativesHedgesOnGuaranteesInInvestmentContractsWithoutDPF": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangesOfDerivativesHedgesOnGuaranteesInInvestmentContractsWithoutDPF",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Changes Of Derivatives Hedges On Guarantees In Investment Contracts Without DPF",
        "terseLabel": "Change in fair value of hedges on guarantees in investment contracts without DPF",
        "documentation": "Net fair value changes of derivatives hedges on guarantees in investment contracts without DPF."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangesOfDerivativesIneffectivePortionOfHedgeTransactionsToWhichHedgeAccountingIsApplied": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangesOfDerivativesIneffectivePortionOfHedgeTransactionsToWhichHedgeAccountingIsApplied",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Changes Of Derivatives Ineffective Portion Of Hedge Transactions To Which Hedge Accounting Is Applied",
        "verboseLabel": "Ineffective portion of hedge transactions to which hedge accounting is applied",
        "documentation": "Net fair value changes of derivatives ineffective portion of hedge transactions to which hedge accounting is applied."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangesOfDerivativesOnEconomicHedgesWhereNoHedgeAccountingIsApplied": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangesOfDerivativesOnEconomicHedgesWhereNoHedgeAccountingIsApplied",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Changes Of Derivatives On Economic Hedges Where No Hedge Accounting Is Applied",
        "verboseLabel": "Economic hedges where no hedge accounting is applied",
        "documentation": "Net Fair value changes of derivatives on economic hedges where no hedge accounting is applied."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetFairValueChangesOnBifurcatedEmbeddedDerivatives": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetFairValueChangesOnBifurcatedEmbeddedDerivatives",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Fair Value Changes On Bifurcated Embedded Derivatives",
        "verboseLabel": "Bifurcated embedded derivatives",
        "documentation": "Net fair value changes on bifurcated embedded derivatives."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": "aeg_Collateral",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements",
        "terseLabel": "Master netting agreements collateral",
        "totalLabel": "Net amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount remaining after deducting the amounts subject to an enforceable master netting arrangement or similar agreement that were not set off against financial assets, from the net amount of financial assets subject to offsetting or subject to an enforceable master netting arrangement or similar agreement presented in the statement of financial position."
       }
      }
     },
     "auth_ref": [
      "r294"
     ]
    },
    "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position",
        "totalLabel": "Net amounts of financial assets presented in the statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The net amount of financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement, presented in the statement of financial position. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r292"
     ]
    },
    "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements",
        "totalLabel": "Net amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount remaining after deducting the amounts subject to an enforceable master netting arrangement or similar agreement that were not set off against financial liabilities, from the net amount of financial liabilities subject to offsetting or subject to an enforceable master netting arrangement or similar agreement presented in the statement of financial position."
       }
      }
     },
     "auth_ref": [
      "r294"
     ]
    },
    "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsAbstract",
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements [abstract]",
        "terseLabel": "Financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail": {
       "parentTag": "ifrs-full_NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OffsettingEnforceableMasterNettingArrangementsAndSimilarAgreementsSummaryOfFinancialInstrumentsSetOffInStatementOfFinancialPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position",
        "totalLabel": "Net amounts of financial liabilities presented in the statement of financial position"
       }
      },
      "en": {
       "role": {
        "documentation": "The net amount of financial liabilities that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement, presented in the statement of financial position. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r292"
     ]
    },
    "aeg_NetForeignInvestmentHedgingReserveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetForeignInvestmentHedgingReserveMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Foreign Investment Hedging Reserve [member]",
        "terseLabel": "Net foreign investment hedging reserve [member]",
        "documentation": "Net foreign investment hedging reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetGainsAndLossesTransferredFromOtherComprehensiveIncomeToTheIncomeStatementDueToRebalancingOfAssetPortfolios": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetGainsAndLossesTransferredFromOtherComprehensiveIncomeToTheIncomeStatementDueToRebalancingOfAssetPortfolios",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Gains And Losses Transferred From Other Comprehensive Income To The Income Statement Due To Rebalancing Of Asset Portfolios",
        "terseLabel": "Net gains and losses transferred from other comprehensive income to the income statement due to rebalancing of asset portfolios",
        "documentation": "Net gains and losses transferred from other comprehensive income to the income statement due to rebalancing of asset portfolios."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetGainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetGainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueGainsAndLossesRecognizedInTheIncomeStatementOnFinancialAssetsAndFinancialLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Gains Losses On Financial Assets At Fair Value Through Profit Or Loss Classified As Held For Trading",
        "terseLabel": "Trading",
        "documentation": "Net gains (losses) on financial assets at fair value through profit or loss classified as held for trading."
       }
      }
     },
     "auth_ref": []
    },
    "us-gaap_NetIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "NetIncomeLoss",
     "crdr": "credit",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income (Loss)",
        "terseLabel": "Net Income (Loss)"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetIncomeLossAttributableToEquityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetIncomeLossAttributableToEquityMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net income loss attributable to equity [member]",
        "terseLabel": "Net income /(loss) [member]",
        "documentation": "Net income loss attributable to equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetIncomeLossForPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetIncomeLossForPeriod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 70.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income Loss for Period",
        "terseLabel": "Net result",
        "documentation": "Net income loss for period."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetIncomeRecognizedTwoThousandAndTwentyFive": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetIncomeRecognizedTwoThousandAndTwentyFive",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income Recognized Two Thousand And Twenty Five",
        "terseLabel": "Net result 2025 recognized in the income statement",
        "documentation": "Net income recognized two thousand and twenty five."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetIncomeRecognizedTwoThousandAndTwentyFour": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetIncomeRecognizedTwoThousandAndTwentyFour",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income Recognized Two Thousand And Twenty Four",
        "terseLabel": "Net result 2024 recognized in the income statement",
        "documentation": "Net income recognized two thousand and twenty four."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetIncomeTwoThousandTwentyFourRetained": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetIncomeTwoThousandTwentyFourRetained",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income Two Thousand Twenty Four Retained",
        "terseLabel": "Net Income 2024 Retained",
        "documentation": "Net income two thousand twenty four retained."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetIncomeTwoThousandTwentyThreeRetained": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetIncomeTwoThousandTwentyThreeRetained",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Income Two Thousand Twenty Three Retained",
        "terseLabel": "Net Income 2023 Retained",
        "documentation": "Net income two thousand twenty three retained."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetInsuranceAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetInsuranceAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Insurance Amount",
        "terseLabel": "Net insurance revenue\u00a0&amp; insurance service expenses",
        "documentation": "Net insurance amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetInsuranceInvestmentReturnFromInsuranceAndInvestmentContract": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetInsuranceInvestmentReturnFromInsuranceAndInvestmentContract",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Insurance Investment Return From Insurance And Investment Contract",
        "totalLabel": "Total insurance investment return",
        "documentation": "Net insurance investment return from insurance and investment contract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetLiabilitiesOrAssetsForRemainingCoverageExcludingLossRecoveryComponentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetLiabilitiesOrAssetsForRemainingCoverageExcludingLossRecoveryComponentMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsWithDiscretionaryParticipatingFeaturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Liabilities Or Assets For Remaining Coverage Excluding Loss Recovery Component [Member]",
        "verboseLabel": "LFRC [member]",
        "documentation": "Net liabilities or assets for remaining coverage excluding loss recovery component."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetPurchaseOfMoneyMarketInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetPurchaseOfMoneyMarketInvestments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": 1.0,
       "order": 25.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net purchase of money market investments",
        "negatedLabel": "Net purchase of money market investments",
        "documentation": "Net purchase of money market investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetReinsuranceAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetReinsuranceAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net reinsurance Amount",
        "terseLabel": "Net amount",
        "documentation": "Net reinsurance Amount"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetResultFromGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetResultFromGroupCompanies",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 41.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Result From Group Companies",
        "terseLabel": "Net result group companies",
        "documentation": "Net result from group companies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetResultGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetResultGroupCompanies",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Result Group Companies",
        "verboseLabel": "Net result group companies",
        "documentation": "net result group companies"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetResultOnFinancingInvestmentActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetResultOnFinancingInvestmentActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Result On Financing Investment Activities",
        "totalLabel": "On December\u00a031",
        "documentation": "Net result on financing investment activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetherlandsGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetherlandsGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Netherlands Government bonds [member]",
        "terseLabel": "Netherlands government bonds [member]",
        "documentation": "Netherlands government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NetincomeexpensesonreinsuranceheldAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NetincomeexpensesonreinsuranceheldAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Net income expenses on reinsurance held [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NewInsuranceContractsIssuedAcquiredDuringTheYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NewInsuranceContractsIssuedAcquiredDuringTheYear",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "New Insurance Contracts Issued Acquired During The Year",
        "terseLabel": "New reinsurance contracts recognized in the year",
        "documentation": "New insurance contracts issued acquired during the year."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NewReinsuranceContractsIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NewReinsuranceContractsIssued",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "New Reinsurance Contracts Issued",
        "terseLabel": "New reinsurance contracts issued/acquired",
        "documentation": "New reinsurance contracts issued."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NominalAmountOfHedgingInstrument": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NominalAmountOfHedgingInstrument",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nominal amount of hedging instrument",
        "verboseLabel": "Notional"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal amount of a hedging instrument. [Refer: Hedging instruments [domain]]"
       }
      }
     },
     "auth_ref": [
      "r303",
      "r307",
      "r550"
     ]
    },
    "aeg_NonCashConsiderationTransferred": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonCashConsiderationTransferred",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Cash Consideration Transferred",
        "terseLabel": "Non cash consideration transferred",
        "documentation": "Non cash consideration transferred."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonControllingInterestAndLongTermIncentivePlanNotYetVested": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonControllingInterestAndLongTermIncentivePlanNotYetVested",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "ifrs-full_CapitalReserve",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Controlling Interest And Long Term Incentive Plan Not Yet Vested",
        "terseLabel": "Non-controlling interests and share options not yet exercised",
        "documentation": "Non controlling interest and long term incentive plan not yet vested."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonCumulativeSubordinatedNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonCumulativeSubordinatedNotesMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Cumulative Subordinated Notes [member]",
        "verboseLabel": "Non-cumulative subordinated notes [member]",
        "documentation": "Non cumulative subordinated notes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonDerivativeAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonDerivativeAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Derivative Assets [Member]",
        "terseLabel": "Non-derivative assets [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonExecutiveDirectorsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonExecutiveDirectorsMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Executive Directors [Member]",
        "terseLabel": "Non-Executive Directors [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonFinancialAssetsAndReceivablesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonFinancialAssetsAndReceivablesMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfImpairmentChargesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Financial Assets And Receivables [Member]",
        "terseLabel": "Non-financial assets and receivables [member]",
        "documentation": "Non financial\u00a0assets and receivables."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonGaapMeasureDescriptionTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonGaapMeasureDescriptionTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-GAAP Measure Description [Text Block]",
        "terseLabel": "Non-GAAP Measure Description"
       }
      }
     },
     "auth_ref": [
      "r852"
     ]
    },
    "aeg_NonInsuranceImpairmentLossesReversals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonInsuranceImpairmentLossesReversals",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 23.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Insurance Impairment Losses Reversals",
        "negatedTerseLabel": "Impairment (losses) / reversals",
        "documentation": "Non insurance impairment losses reversals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonInsuranceInterestExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonInsuranceInterestExpenses",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 22.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Insurance Interest Expenses",
        "negatedLabel": "Interest expenses",
        "documentation": "Non insurance interest expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonInsuranceInterestRevenueOnFinancialInstrumentsMeasuredAtFVPL": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonInsuranceInterestRevenueOnFinancialInstrumentsMeasuredAtFVPL",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Insurance Interest Revenue On Financial Instruments Measured At FVPL",
        "verboseLabel": "Interest income from instruments measured at FVPL",
        "documentation": "Non insurance interest revenue on financial instruments measured at FVPL."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonInsuranceRelatedAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonInsuranceRelatedAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Insurance Related Assets [Member]",
        "terseLabel": "Non-insurance\u00a0related assets [member]",
        "documentation": "Non-insurance\u00a0related assets member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonInsuranceRelatedInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonInsuranceRelatedInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Insurance Related Investment [Member]",
        "terseLabel": "Non Insurance Related Investment [member]",
        "documentation": "Non insurance related investment member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonInsuranceRelatedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonInsuranceRelatedMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Insurance Related [Member]",
        "terseLabel": "Non-Insurance related [member]",
        "documentation": "Non insurance related member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonLifeContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonLifeContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Life Contracts [Member]",
        "terseLabel": "Non life contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonLifeInsuranceContractMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonLifeInsuranceContractMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non life insurance contract [Member]",
        "presentationGuidance": "Non life [member]",
        "documentation": "Non life insurance contract."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonNeosMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonNeosMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-NEOs [Member]",
        "terseLabel": "Non-NEOs"
       }
      }
     },
     "auth_ref": [
      "r815",
      "r826",
      "r836",
      "r860",
      "r869"
     ]
    },
    "aeg_NonOnerousInsuranceContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonOnerousInsuranceContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Onerous Insurance Contracts [Member]",
        "documentation": "Non onerous insurance contracts member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonOperatingItems": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonOperatingItems",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Operating Items",
        "terseLabel": "Non-operating items",
        "documentation": "Non-operating items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonOperatingResultFairValueItems": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonOperatingResultFairValueItems",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Operating Result Fair Value Items",
        "negatedLabel": "Fair value items",
        "documentation": "Non operating result fair value items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonOperatingResultsRealizedGainsLossesOnInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonOperatingResultsRealizedGainsLossesOnInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Operating Results Realized Gains Losses On Investments",
        "terseLabel": "Realized gains / (losses) on investments",
        "documentation": "Non operating results realized gains losses on investments."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonPeoNeoAvgCompActuallyPaidAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonPeoNeoAvgCompActuallyPaidAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO Average Compensation Actually Paid Amount",
        "terseLabel": "Non-PEO NEO Average Compensation Actually Paid Amount"
       }
      }
     },
     "auth_ref": [
      "r843"
     ]
    },
    "ecd_NonPeoNeoAvgTotalCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonPeoNeoAvgTotalCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO Average Total Compensation Amount",
        "terseLabel": "Non-PEO NEO Average Total Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r842"
     ]
    },
    "ecd_NonPeoNeoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonPeoNeoMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-PEO NEO [Member]",
        "terseLabel": "Non-PEO NEO"
       }
      }
     },
     "auth_ref": [
      "r860"
     ]
    },
    "aeg_NonRecognitionOfDeferredTaxAsset": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonRecognitionOfDeferredTaxAsset",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail": {
       "parentTag": "ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non Recognition Of Deferred Tax Asset",
        "terseLabel": "Non-recognition of deferred tax assets",
        "documentation": "Non recognition of deferred tax asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NonRecognitionOfDeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NonRecognitionOfDeferredTaxAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non recognition of deferred tax assets",
        "negatedLabel": "Non-recognition of deferred tax assets",
        "documentation": "Non recognition of deferred tax assets."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_NonRule10b51ArrAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonRule10b51ArrAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-Rule 10b5-1 Arrangement Adopted [Flag]",
        "terseLabel": "Non-Rule 10b5-1 Arrangement Adopted"
       }
      }
     },
     "auth_ref": [
      "r880"
     ]
    },
    "ecd_NonRule10b51ArrTrmntdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "NonRule10b51ArrTrmntdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-Rule 10b5-1 Arrangement Terminated [Flag]",
        "terseLabel": "Non-Rule 10b5-1 Arrangement Terminated"
       }
      }
     },
     "auth_ref": [
      "r880"
     ]
    },
    "ifrs-full_NonadjustingEventsAfterReportingPeriodAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NonadjustingEventsAfterReportingPeriodAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-adjusting events after reporting period [axis]",
        "terseLabel": "Non-adjusting events after reporting period [axis]",
        "definitionGuidance": "Non-adjusting events after reporting period [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r455"
     ]
    },
    "ifrs-full_NonadjustingEventsAfterReportingPeriodDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NonadjustingEventsAfterReportingPeriodDomain",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-adjusting events after reporting period [domain]",
        "terseLabel": "Non-adjusting events after reporting period [domain]",
        "definitionGuidance": "Non-adjusting events after reporting period [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for events that occur between the end of the reporting period and the date when the financial statements are authorised for issue and are indicative of conditions that arose after the reporting period. It also represents the standard value for the 'Non-adjusting events after reporting period' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r0",
      "r455"
     ]
    },
    "ifrs-full_NoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncontrollingInterests",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-controlling interests",
        "terseLabel": "Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Total for all subsidiaries [member]]"
       }
      }
     },
     "auth_ref": [
      "r139",
      "r144",
      "r636"
     ]
    },
    "ifrs-full_NoncontrollingInterestsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncontrollingInterestsMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-controlling interests [member]",
        "terseLabel": "Non-controlling interests [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity in a subsidiary not attributable, directly or indirectly, to the parent."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "ifrs-full_NoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 8.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 55.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current assets",
        "totalLabel": "Non-current assets",
        "terseLabel": "Non-current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that do not meet the definition of current assets. [Refer: Current assets]"
       }
      }
     },
     "auth_ref": [
      "r154",
      "r643",
      "r705"
     ]
    },
    "ifrs-full_NoncurrentFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentFinancialLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current financial liabilities",
        "totalLabel": "Total non-current financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current financial liabilities. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r323"
     ]
    },
    "aeg_NoncurrentFinancialLiabilitiesExcludingTradePayablesAndOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NoncurrentFinancialLiabilitiesExcludingTradePayablesAndOtherProvisions",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_NoncurrentFinancialLiabilities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current financial liabilities excluding trade payables and other provisions",
        "terseLabel": "Non-current financial liabilities excluding trade payables and other provisions",
        "documentation": "Non-current financial liabilities excluding trade payables and other provisions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NoncurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 35.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current liabilities",
        "totalLabel": "Non-current liabilities",
        "terseLabel": "Non-current liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that do not meet the definition of current liabilities. [Refer: Current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r156",
      "r644",
      "r705"
     ]
    },
    "aeg_NoncurrentLiabilitiesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NoncurrentLiabilitiesLineItems",
     "presentation": [
      "http://www.aegon.com/role/OtherNonCurrentLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noncurrent Liabilities [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NoncurrentLiabilitiesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NoncurrentLiabilitiesTable",
     "presentation": [
      "http://www.aegon.com/role/OtherNonCurrentLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Noncurrent Liabilities [Table]",
        "terseLabel": "Non current Liabilities [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NoncurrentLoansToSubsidiariesJointVenturesAndAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NoncurrentLoansToSubsidiariesJointVenturesAndAssociates",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current Loans to Subsidiaries, Joint Ventures and Associates",
        "terseLabel": "Non-current",
        "documentation": "Non-current loans to subsidiaries, joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NoncurrentProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentProvisions",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current provisions",
        "terseLabel": "Non-current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r631"
     ]
    },
    "ifrs-full_NoncurrentTradeReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NoncurrentTradeReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Non-current trade receivables",
        "terseLabel": "Non-current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current trade receivables. [Refer: Trade receivables]"
       }
      }
     },
     "auth_ref": [
      "r779",
      "r786"
     ]
    },
    "aeg_NorthWesterlyVIINoteMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NorthWesterlyVIINoteMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "North Westerly V I I Note [Member]",
        "terseLabel": "North Westerly VII Note [Member]",
        "documentation": "North Westerly VII Note [Member]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NorthWesterlyViNoteMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NorthWesterlyViNoteMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "North Westerly VI Note [Member]",
        "documentation": "North Westerly VI Note."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NotLaterThanFiveYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NotLaterThanFiveYearsMember",
     "presentation": [
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not Later Than Five Years [member]",
        "verboseLabel": "First 5 years [member]",
        "documentation": "Not later than five years."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NotLaterThanOneMonthMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NotLaterThanOneMonthMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not later than one month [member]",
        "terseLabel": "Up\u00a0to\u00a01 month [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of not later than one month."
       }
      }
     },
     "auth_ref": [
      "r738",
      "r744",
      "r752"
     ]
    },
    "ifrs-full_NotLaterThanOneYearMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NotLaterThanOneYearMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisForDerivativeFinancialInstrumentsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not later than one year [member]",
        "terseLabel": "Not later than 1 year [member]",
        "definitionGuidance": "Remaining terms less than 1 year [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of not later than one year."
       }
      }
     },
     "auth_ref": [
      "r197",
      "r198",
      "r257",
      "r423",
      "r427",
      "r640",
      "r742",
      "r752"
     ]
    },
    "ifrs-full_NotLaterThanThreeMonthsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NotLaterThanThreeMonthsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not later than three months [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a time band of not later than three months."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_NotRelatedToCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NotRelatedToCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Not Related To Credit Grades [member]",
        "terseLabel": "Not rated [member]",
        "documentation": "Not Related To Credit Grades."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NotionalAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NotionalAmount",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Notional amount",
        "terseLabel": "Principal amount"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal or face amount of a financial instrument, used to calculate payments made on that instrument."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_NumberOfCommonShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfCommonShares",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of common shares",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "documentation": "Number of common shares"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfCommonSharesSold": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfCommonSharesSold",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of Common Shares Sold",
        "documentation": "Number of common shares sold."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfEmployees": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfEmployees",
     "presentation": [
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of employees",
        "terseLabel": "Number of employees",
        "verboseLabel": "Number of employees employed"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of personnel employed by the entity at a date."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_NumberOfOperatingSegments1": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfOperatingSegments1",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Operating Segments1",
        "terseLabel": "Number of operating segments",
        "documentation": "Number of operating segments1."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfPensionPlans": {
     "xbrltype": "integerItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfPensionPlans",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of pension plans",
        "terseLabel": "Number of benefit plans",
        "documentation": "Number of pension plans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfSaleOfHighNetWorthIndividualCustomers": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfSaleOfHighNetWorthIndividualCustomers",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Sale Of High Net Worth Individual Customers",
        "terseLabel": "Number of sale of high-net worth individual customers",
        "documentation": "Number of sale of high-net worth individual customers."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfShareOptionGrantedInShareBasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfShareOptionGrantedInShareBasedPaymentArrangement",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Share Option Granted In Share Based Payment Arrangement",
        "verboseLabel": "Number of shares allocated",
        "documentation": "Number of share option granted in share based payment arrangement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfShareOptionsConditionallyGrantedInShareBasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfShareOptionsConditionallyGrantedInShareBasedPaymentArrangement",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Share Options Conditionally Granted In Share based Payment Arrangement",
        "terseLabel": "Number of shares conditionally granted as variable compensation",
        "documentation": "Number of share options conditionally granted in share based payment arrangement."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of share options forfeited in share-based payment arrangement",
        "negatedLabel": "Number of shares forfeited"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options forfeited in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r273",
      "r523"
     ]
    },
    "ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfShareOptionsGrantedInSharebasedPaymentArrangement",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of share options granted in share-based payment arrangement",
        "verboseLabel": "Number of shares allocated"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of share options granted in a share-based payment arrangement."
       }
      }
     },
     "auth_ref": [
      "r272",
      "r522"
     ]
    },
    "aeg_NumberOfShareOptionsUnvestedInShareBasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfShareOptionsUnvestedInShareBasedPaymentArrangement",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Share Options Unvested In Share based Payment Arrangement",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "documentation": "Number of share options unvested in share based payment arrangement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfShareOptionsVestedInShareBasedPaymentArrangement": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfShareOptionsVestedInShareBasedPaymentArrangement",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Share Options Vested In Share based Payment Arrangement",
        "terseLabel": "Number of shares vested",
        "documentation": "Number of share options vested in share based payment arrangement."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfSharesAllocated": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfSharesAllocated",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares allocated",
        "terseLabel": "Number of shares allocated",
        "documentation": "Number of shares allocated."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfSharesAuthorised": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfSharesAuthorised",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares authorised",
        "verboseLabel": "Number of authorized shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares authorised."
       }
      }
     },
     "auth_ref": [
      "r438",
      "r588",
      "r649"
     ]
    },
    "aeg_NumberOfSharesConditionallyGranted": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfSharesConditionallyGranted",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares conditionally granted",
        "terseLabel": "Number of shares conditionally granted",
        "documentation": "Number of shares conditionally granted."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_NumberOfSharesOutstanding": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "NumberOfSharesOutstanding",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares outstanding",
        "terseLabel": "Number of common shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]"
       }
      }
     },
     "auth_ref": [
      "r440",
      "r590",
      "r651"
     ]
    },
    "aeg_NumberOfSharesRemainConditionallyGranted": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfSharesRemainConditionallyGranted",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Shares Remain Conditionally Granted",
        "documentation": "Number Of Shares Remain Conditionally Granted"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfSharesRepurchaseProgram": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfSharesRepurchaseProgram",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of shares repurchase program",
        "documentation": "Number of shares repurchase program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfSharesSold": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfSharesSold",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Shares Sold",
        "documentation": "Number of shares sold."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfTreasurySharesCancelled": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfTreasurySharesCancelled",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Treasury Shares Cancelled",
        "terseLabel": "Number of treasury shares cancelled",
        "documentation": "Number of treasury shares cancelled."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfTreasurySharesCancelledCommonSharesB": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfTreasurySharesCancelledCommonSharesB",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number Of Treasury Shares Cancelled Common Shares B",
        "terseLabel": "Number of treasury shares cancelled",
        "documentation": "Number of treasury shares cancelled common shares B."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfYearsDiscountRatesConverge": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfYearsDiscountRatesConverge",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of years discount rates converge",
        "terseLabel": "Discount rates converge linearly",
        "documentation": "Number of years discount rates converge."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_NumberOfYearsUniformLastLiquidPointForMajorCurrencies": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "NumberOfYearsUniformLastLiquidPointForMajorCurrencies",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Number of years, uniform last liquid point for major currencies",
        "terseLabel": "Uniform last liquid point for all Aegon's major currencies (EUR, USD and GBP)",
        "documentation": "Number of years, uniform last liquid point for major currencies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OffBalanceSheetInvestmentsFromThirdParties": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OffBalanceSheetInvestmentsFromThirdParties",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail": {
       "parentTag": "aeg_RevenueGeneratingInvestments",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Off Balance Sheet Investments From Third Parties",
        "terseLabel": "Off-balance sheet investments third parties",
        "documentation": "Off balance sheet investments from third parties."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OfficeMortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OfficeMortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Office Mortgage Loans [member]",
        "terseLabel": "Office mortgage loans [member]",
        "documentation": "Office mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OffshoreLiabilityHedgeProgramMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OffshoreLiabilityHedgeProgramMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Offshore Liability Hedge Program [Member]",
        "verboseLabel": "Offshore Liability Hedge Program [Member]",
        "documentation": "Offshore liability hedge program."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OnDemandMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OnDemandMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "On demand [member]",
        "terseLabel": "On demand [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an on demand time band."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_OnerousContractLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OnerousContractLosses",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Onerous Contract Losses",
        "negatedLabel": "Onerous contract losses (and reversals)",
        "documentation": "Onerous contract losses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OnerousContractLossesAndReversals": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OnerousContractLossesAndReversals",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceServiceExpensesSummaryOfInsuranceServiceExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Onerous Contract Losses And Reversals",
        "terseLabel": "Onerous contract losses (and reversals)",
        "documentation": "Onerous contract losses and reversals."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OnerousInsuranceContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OnerousInsuranceContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Onerous Insurance Contracts [Member]",
        "documentation": "Onerous insurance contracts member."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OperatingExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OperatingExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating expense",
        "definitionGuidance": "Expenses"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "aeg_OperatingLevelCapitalPercentage": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OperatingLevelCapitalPercentage",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Level Capital Percentage",
        "verboseLabel": "Operating level capital percentage",
        "documentation": "Operating level capital percentage."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OperatingResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OperatingResult",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Result",
        "terseLabel": "Operating result",
        "documentation": "Operating result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OperatingResultBeforeTaxExcludingJVsAssociate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OperatingResultBeforeTaxExcludingJVsAssociate",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Result Before Tax Excluding J Vs Associate",
        "terseLabel": "Operating result",
        "documentation": "Operating result before tax excluding J Vs associate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OperatingResultBeforeTaxFromContinuingOperationsExcludingJvsAssociate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OperatingResultBeforeTaxFromContinuingOperationsExcludingJvsAssociate",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Result Before Tax From Continuing Operations Excluding JVs Associate",
        "terseLabel": "Result before tax from continuing operations",
        "documentation": "Operating result before tax from continuing operations excluding JVs associate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OperatingSegmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OperatingSegmentsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Segments [Member]",
        "terseLabel": "Operating segments [member]"
       }
      }
     },
     "auth_ref": [
      "r371"
     ]
    },
    "aeg_OperationalFundingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OperationalFundingMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail",
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfOperationalFundingDetail",
      "http://www.aegon.com/role/BorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operational funding [member]",
        "terseLabel": "Operational funding [member]",
        "documentation": "Operational funding."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OrdinarySharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OrdinarySharesMember",
     "presentation": [
      "http://www.aegon.com/role/CoverPage",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ordinary shares [member]",
        "terseLabel": "Common shares [member]",
        "verboseLabel": "Shares [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments that are subordinate to all other classes of equity instruments."
       }
      }
     },
     "auth_ref": [
      "r954"
     ]
    },
    "aeg_OrigenFinancialServicesLimitedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OrigenFinancialServicesLimitedMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Origen Financial Services Limited [Member]",
        "documentation": "Origen financial services limited."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherAbstract",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other [Abstract]",
        "verboseLabel": "Other",
        "terseLabel": "Other",
        "documentation": "Other."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherAdjustmentsToReconcileProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherAdjustmentsToReconcileProfitLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_AdjustmentsForNoncashItems",
       "weight": 1.0,
       "order": 37.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other adjustments to reconcile profit (loss)",
        "terseLabel": "Other"
       }
      }
     },
     "auth_ref": [
      "r116"
     ]
    },
    "aeg_OtherAlternativeInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherAlternativeInvestmentsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Alternative Investments [member]",
        "terseLabel": "Other alternative investments [member]",
        "documentation": "Other alternative investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherAssetBackedSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherAssetBackedSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Asset Backed Securities [member]",
        "terseLabel": "ABSs - other [member]",
        "documentation": "Other ABS."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other assets",
        "terseLabel": "Other assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_OtherAssetsAmountContributedToFairValueOfPlanAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherAssetsAmountContributedToFairValueOfPlanAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail": {
       "parentTag": "ifrs-full_AssetsOfBenefitPlan",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other assets, amount contributed to fair value of plan assets",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount other types of assets not separately disclosed contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r477",
      "r914"
     ]
    },
    "aeg_OtherAssetsAndReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherAssetsAndReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 48.0
      },
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other assets and receivables",
        "terseLabel": "Other assets and receivables",
        "totalLabel": "Other assets and receivables",
        "documentation": "Other assets and receivables."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Assets [Member]",
        "terseLabel": "Other [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for assets that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r718",
      "r763"
     ]
    },
    "ifrs-full_OtherAssetsPercentageContributedToFairValueOfPlanAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherAssetsPercentageContributedToFairValueOfPlanAssets",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other assets, percentage contributed to fair value of plan assets",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage other types of assets not separately disclosed contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] [Contrast: Other assets, amount contributed to fair value of plan assets]"
       }
      }
     },
     "auth_ref": [
      "r914"
     ]
    },
    "aeg_OtherAssociatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherAssociatesMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Associates [Member]",
        "terseLabel": "Other Associates [member]",
        "documentation": "Other Associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherBenefitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherBenefitsMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Benefits [Member]",
        "terseLabel": "Other benefits [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherBondsMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Bonds [member]",
        "terseLabel": "Other [member]",
        "documentation": "Other bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCashCollateral": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCashCollateral",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Cash Collateral",
        "terseLabel": "Cash collateral - other",
        "documentation": "Other Cash Collateral"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherChangesInRevaluationReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherChangesInRevaluationReserves",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Changes In Revaluation Reserves",
        "terseLabel": "Other",
        "documentation": "Other changes in revaluation reserves."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCharges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCharges",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail": {
       "parentTag": "aeg_OtherIncomeCharges",
       "weight": -1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Charges",
        "negatedLabel": "Other charges",
        "verboseLabel": "Other charges",
        "documentation": "Other charges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCommercialMortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCommercialMortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Commercial Mortgage Loans [member]",
        "terseLabel": "Other commercial mortgage loans [member]",
        "documentation": "Other commercial mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCommitmentsAndContingenciesThroughGuaranteesAssociatedWithSaleOfInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCommitmentsAndContingenciesThroughGuaranteesAssociatedWithSaleOfInvestments",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfOtherCommitmentsAndContingenciesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Commitments And Contingencies Through Guarantees Associated With Sale Of Investments",
        "terseLabel": "Guarantees",
        "documentation": "Other commitments and contingencies through guarantees associated with sale of investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCommitmentsAndContingenciesThroughOtherGuaranteesIncludeContractualObligations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCommitmentsAndContingenciesThroughOtherGuaranteesIncludeContractualObligations",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfOtherCommitmentsAndContingenciesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Commitments And Contingencies Through Other Guarantees Include Contractual Obligations",
        "terseLabel": "Other guarantees",
        "documentation": "Other commitments and contingencies through other guarantees include contractual obligations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCommitmentsMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other commitments [member]",
        "terseLabel": "Other [member]",
        "verboseLabel": "Other commitments [member]",
        "documentation": "Other commitments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 14.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 17.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other components of other comprehensive income that will be reclassified to profit or loss, net of tax",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of individually immaterial components of other comprehensive income that will be reclassified to profit or loss, net of tax, that the entity does not separately disclose in the same statement or note. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "ifrs-full_OtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 4.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income",
        "totalLabel": "Total other comprehensive income / (loss)",
        "terseLabel": "Other comprehensive income",
        "verboseLabel": "Total other comprehensive income(loss)"
       }
      }
     },
     "auth_ref": [
      "r161",
      "r611",
      "r655",
      "r671"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income [abstract]",
        "terseLabel": "Other comprehensive income:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, finance income (expenses) from reinsurance contracts held excluded from profit or loss",
        "terseLabel": "Reinsurance finance income / (expenses)"
       }
      }
     },
     "auth_ref": [
      "r265",
      "r267",
      "r645",
      "r672"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfOtherComprehensiveIncomeDueToInsuranceInvestmentReturn",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, gains (losses) from investments in equity instruments",
        "terseLabel": "Gains/ (losses) on investments in equity instruments (FVOCI)",
        "verboseLabel": "Gains/ (losses) on invesments in equity instruments (FVOCI)",
        "presentationGuidance": "Gains / (losses) on investments in equity instruments (FVOCI)"
       }
      }
     },
     "auth_ref": [
      "r298",
      "r545",
      "r645",
      "r672"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 16.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans",
        "terseLabel": "Remeasurements of defined benefit plans"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, before tax, related to gains (losses) on remeasurements of defined benefit plans, which comprise actuarial gains and losses; the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset); and any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefit liability (asset). [Refer: Other comprehensive income; Defined benefit plans [domain]; Plan assets [member]; Net defined benefit liability (asset)] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r645",
      "r672",
      "r908"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 17.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets",
        "terseLabel": "Changes in revaluation reserve real estate held for own use"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, before tax, related to gains (losses) in relation to changes in the revaluation surplus of property, plant and equipment, right-of-use assets and intangible assets. [Refer: Other comprehensive income, before tax; Revaluation surplus]"
       }
      }
     },
     "auth_ref": [
      "r645",
      "r672"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeBeforeTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeBeforeTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, before tax, insurance finance income (expenses) from insurance contracts issued excluded from profit or loss that will be reclassified to profit or loss",
        "terseLabel": "Insurance finance income / (expenses)"
       }
      }
     },
     "auth_ref": [
      "r267",
      "r645",
      "r672"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans",
        "terseLabel": "Remeasurement of defined benefit plans of group companies"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to gains (losses) on remeasurements of defined benefit plans, which comprise actuarial gains and losses; the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset); and any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefit liability (asset). [Refer: Other comprehensive income; Defined benefit plans [domain]; Plan assets [member]; Net defined benefit liability (asset)] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r645",
      "r671",
      "r908"
     ]
    },
    "ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRevaluation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeNetOfTaxGainsLossesOnRevaluation",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income, net of tax, gains (losses) on revaluation",
        "terseLabel": "Changes in revaluation in subsidiaries"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income, net of tax, related to gains (losses) in relation to changes in the revaluation surplus of property, plant and equipment, right-of-use assets and intangible assets. [Refer: Other comprehensive income; Revaluation surplus]"
       }
      }
     },
     "auth_ref": [
      "r645",
      "r671"
     ]
    },
    "aeg_OtherComprehensiveIncomeNetOfTaxTransfersToLegalReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherComprehensiveIncomeNetOfTaxTransfersToLegalReserve",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income net of tax transfers to legal reserve",
        "terseLabel": "Changes and transfer to legal reserve",
        "documentation": "Other comprehensive income net of tax transfers to legal reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherComprehensiveIncomeRecognizedToAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherComprehensiveIncomeRecognizedToAssociates",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 13.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income Recognized To Associates",
        "terseLabel": "Disposal",
        "documentation": "Other comprehensive income recognized to associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherComprehensiveIncomeRecognizedToGroupAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherComprehensiveIncomeRecognizedToGroupAssets",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 19.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 22.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income Recognized To Group Assets",
        "terseLabel": "Disposal of group assets",
        "documentation": "Other comprehensive income recognized to group assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other comprehensive income that will not be reclassified to profit or loss, net of tax",
        "terseLabel": "Other comprehensive income - that may be recycled to profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of other comprehensive income that will not be reclassified to profit or loss, net of tax. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r788",
      "r789"
     ]
    },
    "aeg_OtherContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherContractsMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceRevenueSummaryOfRevenueRecognizedOnInsuranceAndInvestmentsContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Contracts [Member]",
        "terseLabel": "Other contracts [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherCreditGradesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherCreditGradesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other credit grades [member]",
        "terseLabel": "Other credit grades [member]",
        "documentation": "Other credit grades."
       }
      }
     },
     "auth_ref": []
    },
    "srt_OtherCurrencyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "OtherCurrencyMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Currency [Member]",
        "terseLabel": "Other [Member]",
        "documentation": "Currency classified as other."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherCurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherCurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_CurrentAssets",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_TradeAndOtherReceivables",
       "weight": 1.0,
       "order": 52.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other current assets",
        "terseLabel": "Other current assets",
        "verboseLabel": "Other current assets include derivatives"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current assets that the entity does not separately disclose in the same statement or note. [Refer: Current assets]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_OtherCurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherCurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 1.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_CurrentLiabilities",
       "weight": 1.0,
       "order": 33.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other current liabilities",
        "verboseLabel": "Other current liabilities",
        "terseLabel": "Current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_OtherDebtInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherDebtInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other debt instruments [member]",
        "terseLabel": "Other [member]",
        "documentation": "Other debt instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherDerivativesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherDerivativesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Derivatives [member]",
        "terseLabel": "Other derivatives [member]",
        "documentation": "Other."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherEmployeeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherEmployeeExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail": {
       "parentTag": "ifrs-full_EmployeeBenefitsExpense",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other employee expense",
        "negatedLabel": "Other personnel costs"
       }
      }
     },
     "auth_ref": [
      "r918"
     ]
    },
    "aeg_OtherEquityInstrumentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityInstrumentAxis",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Equity Instrument [Axis]",
        "documentation": "Other equity instrument [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherEquityInstrumentDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityInstrumentDomain",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Equity Instrument [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_HybridLeverage",
       "weight": 1.0,
       "order": 7.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "aeg_EquityIncludingOtherEquityInstruments",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other equity instruments",
        "terseLabel": "Other equity instruments",
        "verboseLabel": "Other equity instruments",
        "documentation": "Other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherEquityInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Equity Instruments [Member]",
        "terseLabel": "Other equity instruments [member]",
        "documentation": "Other equity instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherEquityInstrumentsOutstandingAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityInstrumentsOutstandingAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Equity Instruments Outstanding Amount",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "documentation": "Other equity instruments outstanding amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherEquityMovementReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityMovementReserves",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Equity Movement Reserves",
        "terseLabel": "Other",
        "documentation": "Other equity movement reserves."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherEquityReserveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherEquityReserveMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Equity Reserve [Member]",
        "terseLabel": "Other reserves [member]",
        "documentation": "Other equity reserve."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherExpenseByFunction": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherExpenseByFunction",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherResult",
       "weight": 1.0,
       "order": 35.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other expense, by function",
        "negatedLabel": "Other operating expenses"
       }
      }
     },
     "auth_ref": [
      "r48",
      "r677",
      "r783"
     ]
    },
    "ifrs-full_OtherFeeAndCommissionIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherFeeAndCommissionIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other fee and commission income",
        "terseLabel": "Other fee and commission income"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_OtherFinancialAssetMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherFinancialAssetMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other financial asset [member]",
        "terseLabel": "Other financial asset [member]",
        "documentation": "Other financial asset."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherFinancialInstrumentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherFinancialInstrumentsMember",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Financial Instruments [Member]",
        "terseLabel": "Other [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherFinancialLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherFinancialLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other financial liabilities",
        "terseLabel": "Other financial liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities]"
       }
      }
     },
     "auth_ref": [
      "r632"
     ]
    },
    "aeg_OtherGovernmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherGovernmentMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Government [member]",
        "terseLabel": "Other government [member]",
        "documentation": "Other government."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherImpairmentLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherImpairmentLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail": {
       "parentTag": "ifrs-full_ImpairmentLossRecognisedInProfitOrLoss",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Impairment Loss",
        "terseLabel": "Other",
        "documentation": "Other impairment loss."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail": {
       "parentTag": "aeg_OtherIncomeCharges",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other income",
        "negatedLabel": "Other income",
        "verboseLabel": "Other income"
       }
      }
     },
     "auth_ref": [
      "r45",
      "r782",
      "r783"
     ]
    },
    "aeg_OtherIncomeCharges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherIncomeCharges",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherResult",
       "weight": -1.0,
       "order": 36.0
      },
      "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/OtherIncomeChargesSummaryOfOtherIncomeChargesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Income Charges",
        "terseLabel": "Other income / (charges)",
        "totalLabel": "At December\u00a031",
        "documentation": "Other income charges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherIncomeChargesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherIncomeChargesMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other income (charges) [Member]",
        "terseLabel": "Other income / (charges) [member]",
        "documentation": "Other income / (charges) member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherIncomeExpense",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Income Expense",
        "terseLabel": "Other income / (charges)",
        "documentation": "Other income expense."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherIncomeLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherIncomeLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Income Loss",
        "terseLabel": "Other income / (loss)",
        "documentation": "Other income (loss)."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": 1.0,
       "order": 44.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other inflows (outflows) of cash, classified as financing activities",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "Inflows (outflows) of cash, classified as financing activities, that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r117"
     ]
    },
    "ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other inflows (outflows) of cash, classified as investing activities",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "Inflows (outflows) of cash, classified as investing activities, that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r117"
     ]
    },
    "ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": 1.0,
       "order": 14.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other inflows (outflows) of cash, classified as operating activities",
        "terseLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "Inflows (outflows) of cash, classified as operating activities, that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r115"
     ]
    },
    "ifrs-full_OtherIntangibleAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherIntangibleAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other intangible assets [member]",
        "terseLabel": "Other [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a class of intangible assets that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r927"
     ]
    },
    "aeg_OtherInvestmentIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherInvestmentIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 19.0
      },
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
       "weight": 1.0,
       "order": 19.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Investment Income",
        "terseLabel": "Other investment income",
        "negatedLabel": "Other investment income",
        "documentation": "Other investment income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherInvestmentIncomeNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherInvestmentIncomeNet",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "aeg_RevenueFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Investment Income Net",
        "terseLabel": "Other investment income",
        "documentation": "Other investment income net."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Investment [Member]",
        "terseLabel": "Other investments [member]",
        "verboseLabel": "Other [member]",
        "documentation": "Other investment."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 42.0
      },
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Liabilities",
        "terseLabel": "Other liabilities",
        "totalLabel": "On December 31"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_OtherLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other loans [member]",
        "documentation": "Other loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfTheLossAllowanceMovementsWithAnImpactOnTheIncomeStatementWithTheNetImpairmentChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other [member]",
        "terseLabel": "Other [member]",
        "documentation": "Other."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherNetInvestmentIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherNetInvestmentIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Net Investment Income",
        "terseLabel": "Other investment income",
        "documentation": "Other net investment income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherNetInvestmentResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherNetInvestmentResult",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_TotalNetInvestmentResult",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Net Investment Result",
        "totalLabel": "Other net investment result",
        "terseLabel": "For the year ended December\u00a031",
        "documentation": "Other net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherNetInvestmentResultMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherNetInvestmentResultMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Net Investment Result [Member]",
        "documentation": "Other net investment result."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherNoncurrentAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherNoncurrentAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 61.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other non-current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current assets that the entity does not separately disclose in the same statement or note. [Refer: Non-current assets]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_OtherNoncurrentLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherNoncurrentLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail": {
       "parentTag": "ifrs-full_OtherLiabilities",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail": {
       "parentTag": "ifrs-full_NoncurrentFinancialLiabilities",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 38.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other non-current liabilities",
        "verboseLabel": "Other non-current liabilities",
        "terseLabel": "Non-current"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Non-current liabilities]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_OtherNoncurrentNonfinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherNoncurrentNonfinancialAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other non-current non-financial assets",
        "totalLabel": "Non-current assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of non-current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_OtherOperatingIncomeExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherOperatingIncomeExpense",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other operating income (expense)",
        "negatedTotalLabel": "Total other operating expenses"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "ifrs-full_OtherPayables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherPayables",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other payables",
        "terseLabel": "Other creditors"
       }
      },
      "en": {
       "role": {
        "documentation": "Amounts payable that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ecd_OtherPerfMeasureAmt": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OtherPerfMeasureAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Performance Measure, Amount",
        "terseLabel": "Other Performance Measure, Amount"
       }
      }
     },
     "auth_ref": [
      "r852"
     ]
    },
    "aeg_OtherPostEmploymentBenefitPlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherPostEmploymentBenefitPlansMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Post Employment Benefit Plans [member]",
        "terseLabel": "Other Post Employment Benefit Plans [member]",
        "documentation": "Other post employment benefit plans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherPostemploymentBenefitPlansInDeficitMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherPostemploymentBenefitPlansInDeficitMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other post-employment benefit plans in deficit [member]",
        "terseLabel": "Other post-employment benefit plans in deficit [member]",
        "documentation": "Other post-employment benefit plans in deficit."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherProvisions",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Provisions",
       "weight": 1.0,
       "order": 37.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other provisions",
        "terseLabel": "Other provisions"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of provisions other than provisions for employee benefits. [Refer: Provisions]"
       }
      }
     },
     "auth_ref": [
      "r82",
      "r499",
      "r600",
      "r647"
     ]
    },
    "aeg_OtherReceivable": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherReceivable",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Receivable",
        "terseLabel": "Other",
        "documentation": "Other receivable."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_TradeAndOtherReceivables",
       "weight": 1.0,
       "order": 53.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other receivables",
        "terseLabel": "Other receivables"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount receivable by the entity that it does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r779",
      "r786"
     ]
    },
    "aeg_OtherReserveOfTaxEffectInRevaluationReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherReserveOfTaxEffectInRevaluationReserve",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Reserve Of Tax Effect In Revaluation Reserve",
        "terseLabel": "Tax effect",
        "documentation": "Other reserve of tax effect in revaluation reserve."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherReserves": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherReserves",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other reserves",
        "verboseLabel": "Other reserves",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing reserves within equity, not including retained earnings. [Refer: Retained earnings]"
       }
      }
     },
     "auth_ref": [
      "r780",
      "r787"
     ]
    },
    "aeg_OtherResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherResult",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_RevenueAndOperatingIncome",
       "weight": -1.0,
       "order": 34.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Result",
        "totalLabel": "Other result",
        "documentation": "Other Result."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherRevenue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "aeg_RevenueFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other revenue",
        "terseLabel": "Other revenues"
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "aeg_OtherRevenueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherRevenueMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Revenue [Member]",
        "documentation": "Other revenue."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OtherSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Securities [member]",
        "terseLabel": "Other securities [member]",
        "documentation": "Other securities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other tax effects for reconciliation between accounting profit and tax expense (income)",
        "negatedLabel": "Other"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "ifrs-full_OtherTaxRateEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "OtherTaxRateEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other tax rate effects for reconciliation between accounting profit and tax expense (income)",
        "terseLabel": "Other tax rate effects for reconciliation between accounting profit and tax expense (income)"
       }
      },
      "en": {
       "role": {
        "documentation": "Tax rate effects, in aggregate, on the reconciliation between the average effective tax rate and the applicable tax rate that the entity does not separately disclose in the reconciliation. [Refer: Average effective tax rate; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r6",
      "r460"
     ]
    },
    "aeg_OtherValuationTechniqueMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OtherValuationTechniqueMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Valuation Technique [member]",
        "terseLabel": "Other valuation technique [member]",
        "documentation": "Other valuation technique."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OthernetinvestmentresultAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OthernetinvestmentresultAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Other net investment result [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_OthersMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "OthersMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Others [Member]",
        "terseLabel": "Others [member]",
        "documentation": "Others member."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_OutstandingAggtErrCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OutstandingAggtErrCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Aggregate Erroneous Compensation Amount",
        "terseLabel": "Outstanding Aggregate Erroneous Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r813",
      "r824",
      "r834",
      "r867"
     ]
    },
    "ecd_OutstandingRecoveryCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OutstandingRecoveryCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Recovery Compensation Amount",
        "terseLabel": "Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r816",
      "r827",
      "r837",
      "r870"
     ]
    },
    "ecd_OutstandingRecoveryIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "OutstandingRecoveryIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Outstanding Recovery, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r816",
      "r827",
      "r837",
      "r870"
     ]
    },
    "aeg_PIMSolvencyCapitalRequirementReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PIMSolvencyCapitalRequirementReserve",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "P I M Solvency Capital Requirement Reserve",
        "verboseLabel": "Group SCR",
        "documentation": "PIM solvency capital requirement reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ParValueInCentsPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ParValueInCentsPerShare",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Par value in cents per share",
        "terseLabel": "Par value in cents per share",
        "documentation": "Par value in cents per share."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ParValuePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ParValuePerShare",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Par value per share",
        "terseLabel": "Common shares issuance, par value"
       }
      },
      "en": {
       "role": {
        "documentation": "The nominal value per share."
       }
      }
     },
     "auth_ref": [
      "r439",
      "r589",
      "r650"
     ]
    },
    "ifrs-full_ParentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ParentMember",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemuneration",
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/AuditorsRemunerationTables",
      "http://www.aegon.com/role/CommissionsAndExpenses",
      "http://www.aegon.com/role/CommissionsAndExpensesSummaryOfCommissionsAndExpensesDetail",
      "http://www.aegon.com/role/CommissionsAndExpensesTables",
      "http://www.aegon.com/role/CommitmentsAndContingencies",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail",
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/CurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlans",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriod",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/GeneralInformation",
      "http://www.aegon.com/role/IncomeTax",
      "http://www.aegon.com/role/IncomeTaxTables",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFees",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesSummaryOfInterestChargesAndRelatedFeesDetail",
      "http://www.aegon.com/role/InterestChargesAndRelatedFeesTables",
      "http://www.aegon.com/role/InvestmentIncome",
      "http://www.aegon.com/role/InvestmentIncomeSummaryOfInvestmentIncomeDetail",
      "http://www.aegon.com/role/InvestmentIncomeTables",
      "http://www.aegon.com/role/LoansToGroupCompanies",
      "http://www.aegon.com/role/LoansToGroupCompaniesSummaryOfLoansToGroupCompaniesDetail",
      "http://www.aegon.com/role/LoansToGroupCompaniesTables",
      "http://www.aegon.com/role/LongTermBorrowings",
      "http://www.aegon.com/role/LongTermBorrowingsSummaryOfLongTermBorrowingsDetail",
      "http://www.aegon.com/role/LongTermBorrowingsTables",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformation",
      "http://www.aegon.com/role/NonCurrentAssets",
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
      "http://www.aegon.com/role/NonCurrentAssetsTables",
      "http://www.aegon.com/role/NumberOfEmployees",
      "http://www.aegon.com/role/NumberOfEmployeesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherCurrentAssets",
      "http://www.aegon.com/role/OtherCurrentAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstruments",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilities",
      "http://www.aegon.com/role/OtherNonCurrentLiabilitiesAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationAdditionalInformationDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
      "http://www.aegon.com/role/Provisions",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail",
      "http://www.aegon.com/role/Receivables",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/ResultsFromFinancialTransactions",
      "http://www.aegon.com/role/ShareCapital",
      "http://www.aegon.com/role/ShareholdersEquity",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/ShareholdersEquityTables",
      "http://www.aegon.com/role/SharesInGroupCompanies",
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesTables",
      "http://www.aegon.com/role/SubordinatedBorrowings",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Parent [member]",
        "verboseLabel": "Aegon Ltd. [member]",
        "terseLabel": "Aegon Ltd. [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an entity that controls one or more entities."
       }
      }
     },
     "auth_ref": [
      "r38",
      "r483"
     ]
    },
    "aeg_PastDueAndImpairedAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PastDueAndImpairedAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past Due And Impaired [Axis]",
        "documentation": "Past due and impaired [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PastDueAndImpairedDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PastDueAndImpairedDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past Due And Impaired [Domain]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PastDueAndImpairedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PastDueAndImpairedMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past Due And Impaired [member]",
        "terseLabel": "Past due and impaired [member]",
        "documentation": "Past due and impaired."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PastDueStatusAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PastDueStatusAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past due status [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r736"
     ]
    },
    "ifrs-full_PastDueStatusDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PastDueStatusDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Past due status [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all past-due statuses. It also represents the standard value for the 'Past due status' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r736"
     ]
    },
    "ecd_PayVsPerformanceDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PayVsPerformanceDisclosureLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance Disclosure [Line Items]",
        "terseLabel": "Pay vs Performance Disclosure"
       }
      }
     },
     "auth_ref": [
      "r841"
     ]
    },
    "aeg_PayablesDueToPolicyholders": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PayablesDueToPolicyholders",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payables due to policyholders",
        "terseLabel": "Payables due to policyholders",
        "documentation": "Payables due to policyholders."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PayablesOnSocialSecurityAndTaxesOtherThanIncomeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PayablesOnSocialSecurityAndTaxesOtherThanIncomeTax",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payables on social security and taxes other than income tax",
        "terseLabel": "Social security and taxes payable"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of payment due on social security and taxes other than income tax. Income taxes include all domestic and foreign taxes that are based on taxable profits. Income taxes also include taxes, such as withholding taxes, that are payable by a subsidiary, associate or joint arrangement on distributions to the reporting entity."
       }
      }
     },
     "auth_ref": [
      "r953"
     ]
    },
    "ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 43.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments of lease liabilities, classified as financing activities",
        "negatedLabel": "Payment of lease liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities]"
       }
      }
     },
     "auth_ref": [
      "r701"
     ]
    },
    "ifrs-full_PaymentsOfOtherEquityInstruments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PaymentsOfOtherEquityInstruments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 48.0
      }
     },
     "lang": {
      "en": {
       "role": {
        "documentation": "The cash outflow for payments for equity instruments that the entity does not separately disclose in the same statement or note."
       }
      }
     },
     "auth_ref": [
      "r931"
     ]
    },
    "ifrs-full_PaymentsToAcquireOrRedeemEntitysShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PaymentsToAcquireOrRedeemEntitysShares",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 51.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payments to acquire or redeem entity's shares",
        "negatedLabel": "Purchase of treasury shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow to acquire or redeem entity's shares."
       }
      }
     },
     "auth_ref": [
      "r698"
     ]
    },
    "ecd_PeerGroupIssuersFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeerGroupIssuersFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Peer Group Issuers, Footnote [Text Block]",
        "terseLabel": "Peer Group Issuers, Footnote"
       }
      }
     },
     "auth_ref": [
      "r851"
     ]
    },
    "ecd_PeerGroupTotalShareholderRtnAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeerGroupTotalShareholderRtnAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Peer Group Total Shareholder Return Amount",
        "terseLabel": "Peer Group Total Shareholder Return Amount"
       }
      }
     },
     "auth_ref": [
      "r851"
     ]
    },
    "aeg_PensionContributionsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PensionContributionsMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Contributions [Member]",
        "terseLabel": "Pension contributions [member]",
        "documentation": "Pension contributions."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PensionDefinedBenefitPlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PensionDefinedBenefitPlansMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension defined benefit plans [member]",
        "terseLabel": "Pension defined benefit plans [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for pension defined benefit plans. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r909"
     ]
    },
    "ecd_PeoActuallyPaidCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoActuallyPaidCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Actually Paid Compensation Amount",
        "terseLabel": "PEO Actually Paid Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r843"
     ]
    },
    "ecd_PeoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO [Member]",
        "terseLabel": "PEO"
       }
      }
     },
     "auth_ref": [
      "r860"
     ]
    },
    "ecd_PeoName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Name",
        "terseLabel": "PEO Name"
       }
      }
     },
     "auth_ref": [
      "r853"
     ]
    },
    "ecd_PeoTotalCompAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PeoTotalCompAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "PEO Total Compensation Amount",
        "terseLabel": "PEO Total Compensation Amount"
       }
      }
     },
     "auth_ref": [
      "r842"
     ]
    },
    "aeg_PercentageContributedToFairValueOfPlanAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageContributedToFairValueOfPlanAssets",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Contributed To Fair Value Of Plan Assets",
        "totalLabel": "On December 31",
        "documentation": "Percentage Contributed To Fair Value Of Plan Assets"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfAdjustmentForDefaultRiskPremium": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfAdjustmentForDefaultRiskPremium",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Adjustment For Default Risk Premium",
        "terseLabel": "Percentage of adjustment for default risk premium",
        "documentation": "Percentage of adjustment for default risk premium."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfClassificationOfAdditionalBenefits": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfClassificationOfAdditionalBenefits",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Classification Of Additional Benefits",
        "terseLabel": "Percentage of classification of additional benefits",
        "documentation": "Percentage of classification of additional benefits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfDiscountRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfDiscountRate",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of discount rate",
        "terseLabel": "Discount rate used in valuation of tax credit investments",
        "documentation": "Percentage of discount rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfEconomicVariableAssumptions": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfEconomicVariableAssumptions",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of Economic Variable Assumptions",
        "terseLabel": "Weightings",
        "documentation": "Percentage of economic variable assumptions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfEquityMarketExposure": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfEquityMarketExposure",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Equity Market Exposure",
        "terseLabel": "Percentage of equity market exposure",
        "documentation": "Percentage of equity market exposure."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfIlliquidityFactorAssignedToCashFlowsAreDependentOnTheUnderlyingAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfIlliquidityFactorAssignedToCashFlowsAreDependentOnTheUnderlyingAssets",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Illiquidity Factor Assigned To Cash Flows Are Dependent On The Underlying Assets",
        "terseLabel": "Percentage of illiquidity factor assigned to cash flows are dependent on the underlying assets",
        "documentation": "Percentage of illiquidity factor assigned to cash flows are dependent on the underlying assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfIlliquidityFactorAssignedToCashFlowsAreNotDependentOnTheUnderlyingAssets": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfIlliquidityFactorAssignedToCashFlowsAreNotDependentOnTheUnderlyingAssets",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Illiquidity Factor Assigned To Cash Flows Are Not Dependent On The Underlying Assets",
        "terseLabel": "Percentage of illiquidity factor assigned to cash flows are not dependent on the underlying assets",
        "documentation": "Percentage of illiquidity factor assigned to cash flows are not dependent on the underlying assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfIlliquidityPremium": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfIlliquidityPremium",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Illiquidity Premium",
        "terseLabel": "ILP per portfolio",
        "verboseLabel": "Percentage of illiquidity premium",
        "documentation": "Percentage of illiquidity premium."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfIncreaseInValueOfProperties": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfIncreaseInValueOfProperties",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of increase in value of properties",
        "verboseLabel": "Value of Aegon's properties which were appraised in the current year",
        "documentation": "Percentage of value of properties for general account and account of policyholders appraised."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfIncreaseInValueOfPropertiesPortionPerformedByIndependentExternalAppraisers": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfIncreaseInValueOfPropertiesPortionPerformedByIndependentExternalAppraisers",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateHeldByEntitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of increase in value of properties, portion performed by independent external appraisers",
        "verboseLabel": "Appraisals performed by independent external appraisers",
        "documentation": "Percentage of appraised properties performed by independent external appraisers"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfIncreaseOrDecreaseInEquityPrices": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfIncreaseOrDecreaseInEquityPrices",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of Increase Or Decrease in Equity Prices",
        "verboseLabel": "Percentage of increase or decrease in equity prices",
        "documentation": "Percentage of increase or decrease in equity prices."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfInterestRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfInterestRate",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of Interest Rate",
        "terseLabel": "Interest rate",
        "documentation": "Percentage of interest rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfNetWorth": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfNetWorth",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Net worth",
        "verboseLabel": "Percentage of net worth",
        "documentation": "Percentage of net worth."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfNonExecutiveDirectorsPaidInCash": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfNonExecutiveDirectorsPaidInCash",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Non Executive Directors Paid In Cash",
        "verboseLabel": "Percentage of non executive directors paid in cash",
        "documentation": "Percentage of non executive directors paid in cash"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfNonExecutiveDirectorsPaidInFixedShares": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfNonExecutiveDirectorsPaidInFixedShares",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Non Executive Directors Paid In Fixed Shares",
        "verboseLabel": "Percentage of non executive directors paid in fixed shares.",
        "documentation": "Percentage of non executive directors paid in fixed shares."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PercentageOfReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PercentageOfReasonablyPossibleDecreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17",
        "terseLabel": "Percentage of reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage of the reasonably possible decrease in the risk variable that arises from contracts within scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r254"
     ]
    },
    "ifrs-full_PercentageOfReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PercentageOfReasonablyPossibleIncreaseInRiskExposureThatArisesFromContractsWithinScopeOfIFRS17",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17",
        "terseLabel": "Percentage of reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage of a reasonably possible increase in the risk variable that arises from contracts within scope of IFRS 17."
       }
      }
     },
     "auth_ref": [
      "r254"
     ]
    },
    "aeg_PercentageOfSaleOfStakeInAssociate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfSaleOfStakeInAssociate",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Sale Of Stake In Associate",
        "terseLabel": "Percentage of sale of stake in associate",
        "documentation": "Percentage of sale of stake in associate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfShareholdingAboveWhichUnanimousVoteOfTheSupervisoryDirectorsIsRequiredForCapitalManagementMaterialReinsuranceAndCapitalAllocation": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfShareholdingAboveWhichUnanimousVoteOfTheSupervisoryDirectorsIsRequiredForCapitalManagementMaterialReinsuranceAndCapitalAllocation",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Shareholding Above Which Unanimous Vote Of The Supervisory Directors Is Required For Capital Management Material Reinsurance And Capital Allocation",
        "verboseLabel": "Percentage of shareholding above which unanimous vote of the supervisory directors is required for capital management material reinsurance and capital allocation",
        "documentation": "Percentage of shareholding above which unanimous vote of the supervisory directors is required for capital management material reinsurance and capital allocation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfShareholdingForDirectorAppointment": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfShareholdingForDirectorAppointment",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Shareholding For Director Appointment",
        "verboseLabel": "Percentage of shareholding for director appointment",
        "documentation": "Percentage of shareholding for director appointment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfShareholdingForWhereVoteOfTheNonIndependentNomineeIsRequiredForChangesToDividendPolicy": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfShareholdingForWhereVoteOfTheNonIndependentNomineeIsRequiredForChangesToDividendPolicy",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Shareholding For Where Vote Of The Non Independent Nominee Is Required For Changes To Dividend Policy",
        "verboseLabel": "Percentage of shareholding for where vote of the non independent nominee is required for changes to dividend policy",
        "documentation": "Percentage of shareholding for where vote of the non independent nominee is required for changes to dividend policy."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfStake": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfStake",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Stake",
        "verboseLabel": "Percentage of stake",
        "documentation": "Percentage of stake."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PercentageOfStakeMaterialAssociate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfStakeMaterialAssociate",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Stake Material Associate",
        "documentation": "Percentage of stake material associate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PercentageOfVotingEquityInterestsAcquired": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PercentageOfVotingEquityInterestsAcquired",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of voting equity interests acquired",
        "verboseLabel": "Percentage of voting equity interests acquired"
       }
      },
      "en": {
       "role": {
        "documentation": "The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r276",
      "r525"
     ]
    },
    "aeg_PercentageOfVotingPowerForSignificantInfluence": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PercentageOfVotingPowerForSignificantInfluence",
     "presentation": [
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage Of Voting Power For Significant Influence",
        "terseLabel": "Percentage of voting power for significant influence",
        "documentation": "Percentage of voting power for significant influence."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PeriodAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PeriodAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Period [Axis]",
        "documentation": "Period."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PeriodDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PeriodDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Period [Domain]",
        "documentation": "Period."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PeriodOverWhichDirectorsMayBeAppointed": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PeriodOverWhichDirectorsMayBeAppointed",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Period Over Which Directors May Be Appointed",
        "verboseLabel": "Period over which directors may be appointed",
        "documentation": "Period over which directors may be appointed."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PeriodOverWhichEconomicAvailableCapitalIsCalculated": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PeriodOverWhichEconomicAvailableCapitalIsCalculated",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Period Over Which Economic Available Capital Is Calculated",
        "terseLabel": "Period over which economic available capital is calculated",
        "documentation": "Period over which economic available capital is calculated."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PerpetualContingentConvertibleSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PerpetualContingentConvertibleSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Perpetual Contingent Convertible Securities [Member]",
        "terseLabel": "Perpetual contingent convertible securities [member]",
        "documentation": "Perpetual contingent convertible securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PerpetualCumulativeSubordinatedBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PerpetualCumulativeSubordinatedBondsMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Perpetual Cumulative Subordinated Bonds [member]",
        "terseLabel": "Perpetual cumulative subordinated bonds [member]",
        "documentation": "Perpetual cumulative subordinated bonds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PlanAssetsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PlanAssetsAtFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail": {
       "parentTag": "ifrs-full_SurplusDeficitInPlan",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Plan assets, at fair value",
        "negatedLabel": "Fair value of plan assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r919"
     ]
    },
    "ifrs-full_PlanAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PlanAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Plan assets [member]",
        "terseLabel": "Defined benefit plans [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for defined benefit plan assets. Plan assets comprise: (a) assets held by a long-term employee benefit fund; and (b) qualifying insurance policies."
       }
      }
     },
     "auth_ref": [
      "r18",
      "r469"
     ]
    },
    "ecd_PnsnAdjsPrrSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PnsnAdjsPrrSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Adjustments Prior Service Cost [Member]",
        "terseLabel": "Pension Adjustments Prior Service Cost"
       }
      }
     },
     "auth_ref": [
      "r844"
     ]
    },
    "ecd_PnsnAdjsSvcCstMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PnsnAdjsSvcCstMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Adjustments Service Cost [Member]",
        "terseLabel": "Pension Adjustments Service Cost"
       }
      }
     },
     "auth_ref": [
      "r900"
     ]
    },
    "ecd_PnsnBnftsAdjFnTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PnsnBnftsAdjFnTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pension Benefits Adjustments, Footnote [Text Block]",
        "terseLabel": "Pension Benefits Adjustments, Footnote"
       }
      }
     },
     "auth_ref": [
      "r843"
     ]
    },
    "aeg_PolandAndRomaniaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PolandAndRomaniaMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Poland And Romania [Member]",
        "terseLabel": "Poland and romania [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PolicyholderClaimsAndBenefits": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PolicyholderClaimsAndBenefits",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail": {
       "parentTag": "ifrs-full_MiscellaneousOtherOperatingExpense",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfDetailedInformationOfOtherOperatingExpenseDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Policyholder Claims And Benefits",
        "negatedLabel": "Policyholder claims and benefits",
        "documentation": "Policyholder claims and benefits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PolicyholderRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PolicyholderRiskMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Policyholder Risk [Member]",
        "terseLabel": "Policyholder Risk [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PostEmploymentHealthcareBenefitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PostEmploymentHealthcareBenefitsMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Post employment healthcare benefits [member]",
        "terseLabel": "Post employment healthcare benefits [member]",
        "documentation": "Post employment healthcare benefits."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PostRetirementWelfarePlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PostRetirementWelfarePlanMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Post Retirement Welfare Plan [member]",
        "terseLabel": "Post retirement welfare plan [member]",
        "documentation": "Post retirement welfare plan."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PostemploymentBenefitExpenseDefinedBenefitPlans",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail": {
       "parentTag": "ifrs-full_EmployeeBenefitsExpense",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Post-employment benefit expense, defined benefit plans",
        "negatedLabel": "Post-employment benefit costs"
       }
      }
     },
     "auth_ref": [
      "r908",
      "r918"
     ]
    },
    "aeg_PreferredSharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PreferredSharesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Preferred Shares [member]",
        "terseLabel": "Preferred shares [member]",
        "documentation": "Preferred shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PremiumAllocationApproachMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PremiumAllocationApproachMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Premium Allocation Approach [Member]",
        "terseLabel": "Premium allocation approach [member]",
        "documentation": "Premium allocation approach."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PresentValueOfDefinedBenefitObligationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PresentValueOfDefinedBenefitObligationMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Present value of defined benefit obligation [member]",
        "terseLabel": "Present value of defined benefit obligation [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the present value of a defined benefit obligation. The present value of a defined benefit obligation is the present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods."
       }
      }
     },
     "auth_ref": [
      "r19",
      "r470"
     ]
    },
    "aeg_PresentValueOfTheExpectedGuaranteedPremiumsAndManagementFeesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PresentValueOfTheExpectedGuaranteedPremiumsAndManagementFeesMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Present Value Of The Expected Guaranteed Premiums And Management Fees [Member]",
        "terseLabel": "Present value of the expected guaranteed premiums and management fees [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PrincipalPlaceOfBusinessOfAssociate": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PrincipalPlaceOfBusinessOfAssociate",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Principal place of business of associate",
        "terseLabel": "Principal place of business of associate"
       }
      },
      "en": {
       "role": {
        "documentation": "The principal place of business of an associate. [Refer: Principal place of business; Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r54",
      "r59",
      "r148"
     ]
    },
    "aeg_PrivateLoansCommitmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PrivateLoansCommitmentsMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Private Loans Commitments [member]",
        "terseLabel": "Private loans [member]",
        "documentation": "Private loans commitments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ProbabilityDefaultRating": {
     "xbrltype": "pureItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProbabilityDefaultRating",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Probability Default Rating",
        "verboseLabel": "Probability Default Rating",
        "documentation": "Probability default rating."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProceedsFromBorrowingsClassifiedAsFinancingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": 1.0,
       "order": 50.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from borrowings, classified as financing activities",
        "terseLabel": "Proceeds from TRUPS, Subordinated borrowings and borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from borrowings obtained. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r699"
     ]
    },
    "ifrs-full_ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations",
        "terseLabel": "Proceeds from divestiture of business"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from the disposal of non-current assets or disposal groups classified as held for sale and discontinued operations. [Refer: Discontinued operations [member]; Disposal groups classified as held for sale [member]; Non-current assets or disposal groups classified as held for sale]"
       }
      }
     },
     "auth_ref": [
      "r930"
     ]
    },
    "aeg_ProceedsFromSaleOfShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProceedsFromSaleOfShares",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherIncomeChargesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds From Sale Of Shares",
        "documentation": "Proceeds From Sale Of Shares"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of intangible assets, classified as investing activities",
        "terseLabel": "Disposal of intangible asset"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of intangible assets, classified as investing activities. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r697"
     ]
    },
    "ifrs-full_ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of investments accounted for using equity method",
        "terseLabel": "Disposal joint ventures and associates",
        "verboseLabel": "Sale"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of investments accounted for using the equity method. [Refer: Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r930"
     ]
    },
    "ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proceeds from sales of property, plant and equipment, classified as investing activities",
        "verboseLabel": "Disposal of equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash inflow from sales of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r697"
     ]
    },
    "srt_ProductOrServiceAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProductOrServiceAxis",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Product and Service [Axis]",
        "documentation": "Information by product and service, or group of similar products and similar services."
       }
      }
     },
     "auth_ref": [
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r413",
      "r944"
     ]
    },
    "ifrs-full_ProductsAndServicesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProductsAndServicesAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Products and services [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r372",
      "r714",
      "r759"
     ]
    },
    "ifrs-full_ProductsAndServicesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProductsAndServicesDomain",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Products and services [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the entity's products and services. It also represents the standard value for the 'Products and services' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r372",
      "r714",
      "r759"
     ]
    },
    "srt_ProductsAndServicesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ProductsAndServicesDomain",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Product and Service [Domain]",
        "documentation": "Product or service, or a group of similar products or similar services."
       }
      }
     },
     "auth_ref": [
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r413",
      "r944"
     ]
    },
    "ifrs-full_ProfitLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLoss",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_ComprehensiveIncome",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      },
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss)",
        "totalLabel": "Net result from continuing and discontinued operations",
        "presentationGuidance": "Net result from continuing and discontinued operations",
        "definitionGuidance": "Net result recognized in the income statement",
        "measurementGuidance": "Post-tax profit or (loss)",
        "commentaryGuidance": "Post-tax profit or loss"
       }
      },
      "en": {
       "role": {
        "documentation": "The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r135",
      "r137",
      "r364",
      "r367",
      "r489",
      "r521",
      "r610",
      "r654",
      "r705",
      "r719"
     ]
    },
    "ifrs-full_ProfitLossAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossAbstract",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) [abstract]",
        "verboseLabel": "Represented by:",
        "terseLabel": "Represented by:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProfitLossAttributableToAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to [abstract]",
        "verboseLabel": "Net income/ (loss) attributes to:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProfitLossAttributableToNoncontrollingInterests": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToNoncontrollingInterests",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 42.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to non-controlling interests",
        "terseLabel": "Non-controlling interests"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing and discontinued operations attributable to non-controlling interests. [Refer: Profit (loss); Non-controlling interests]"
       }
      }
     },
     "auth_ref": [
      "r143",
      "r657"
     ]
    },
    "ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to ordinary equity holders of parent entity",
        "terseLabel": "Net result attributable to common shareholders"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r66"
     ]
    },
    "ifrs-full_ProfitLossAttributableToOwnersOfParent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossAttributableToOwnersOfParent",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 43.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CondensedIncomeStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
      "http://www.aegon.com/role/ProposalForProfitAppropriationSummaryOfProposalForProfitAppropriationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss), attributable to owners of parent",
        "terseLabel": "Owners\u00a0of Aegon Ltd.",
        "measurementGuidance": "Net result attributable to owners of Aegon Ltd.",
        "positiveLabel": "Net income",
        "disclosureGuidance": "Net result attributable to owners of Aegon Ltd.",
        "positiveTerseLabel": "Net result"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r658"
     ]
    },
    "aeg_ProfitLossAttributableToOwnersOfParentForBasicEarningsPerShare": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProfitLossAttributableToOwnersOfParentForBasicEarningsPerShare",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (Loss), Attributable To Owners Of Parent For Basic Earnings Per Share",
        "totalLabel": "Net result attributable to owners for basic earnings per share calculation",
        "documentation": "Profit (loss), attributable to owners of parent for basic earnings per share."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProfitLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossFromContinuingOperations",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_ResultBeforeTaxFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) before tax",
        "totalLabel": "Result\u00a0before tax\u00a0from continuing operations",
        "terseLabel": "Result before tax from continuing operations",
        "definitionGuidance": "Result before tax",
        "positiveLabel": "Profit or loss",
        "verboseLabel": "Profit or loss from continuing operations"
       }
      }
     },
     "auth_ref": [
      "r284",
      "r755",
      "r756",
      "r782",
      "r783"
     ]
    },
    "aeg_ProfitLossBeforeTaxFromDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProfitLossBeforeTaxFromDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_ResultBeforeTaxFromContinuingAndDiscontinuedOperations",
       "weight": 1.0,
       "order": 16.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit Loss Before Tax From Discontinued Operations",
        "verboseLabel": "Result before tax from discontinued operations",
        "documentation": "Profit loss before tax from discontinued operations."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProfitLossFromContinuingOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossFromContinuingOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from continuing operations",
        "totalLabel": "Net result\u00a0from continuing operations",
        "verboseLabel": "Net result\u00a0from continuing operations"
       }
      },
      "en": {
       "role": {
        "documentation": "The profit (loss) from continuing operations. [Refer: Continuing operations, unless line item indicates otherwise [member]; Profit (loss)]"
       }
      }
     },
     "auth_ref": [
      "r159",
      "r364",
      "r367",
      "r654"
     ]
    },
    "ifrs-full_ProfitLossFromDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProfitLossFromDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit (loss) from discontinued operations",
        "terseLabel": "Net result from discontinued operations",
        "verboseLabel": "Post-tax\u00a0profit or loss from discontinued operations"
       }
      }
     },
     "auth_ref": [
      "r160",
      "r283",
      "r669",
      "r676"
     ]
    },
    "aeg_ProfitLossFromInsuranceInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProfitLossFromInsuranceInvestingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit Loss From Insurance Investing Activities",
        "terseLabel": "For the year ended December\u00a031",
        "documentation": "Profit loss from insurance investment activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ProfitLossFromInsuranceInvestmentActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProfitLossFromInsuranceInvestmentActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfProfitOrLossDueToInsuranceInvestmentReturn",
       "weight": 1.0,
       "order": 18.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit Loss From Insurance Investment Activities",
        "positiveLabel": "Results from financial transactions",
        "documentation": "Profit loss from insurance investment activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ProfitLossIncludeJointVenturesBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProfitLossIncludeJointVenturesBeforeTax",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit Loss include Joint Ventures Before Tax",
        "terseLabel": "Operating result after tax",
        "documentation": "Profit loss include joint ventures before tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ProfitLossIncludingPortionAttributableToNoncontrollingInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProfitLossIncludingPortionAttributableToNoncontrollingInterest",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Profit loss including portion attributable to non-controlling interest",
        "presentationGuidance": "Net result for the financial year",
        "documentation": "Profit loss including portion attributable to non-controlling interest."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PropertyPlantAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PropertyPlantAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail": {
       "parentTag": "ifrs-full_OtherNoncurrentNonfinancialAssets",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, plant and equipment",
        "verboseLabel": "Property, Plant\u00a0&amp; Equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets]"
       }
      }
     },
     "auth_ref": [
      "r14",
      "r466",
      "r624"
     ]
    },
    "aeg_ProportionGroupSolvencyTwoRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProportionGroupSolvencyTwoRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion Group Solvency Two Ratio",
        "verboseLabel": "Group solvency ratio",
        "documentation": "Proportion group solvency two ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ProportionOfInsuranceLicenseOfAuthorizedControlLevel": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProportionOfInsuranceLicenseOfAuthorizedControlLevel",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of insurance license of authorized control level",
        "terseLabel": "Withdrawal of insurance license triggered by breach of Authorized Control Level (ACL), percentage",
        "documentation": "Proportion of insurance license of authorized control level."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProportionOfOwnershipInterestInAssociate": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestInAssociate",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of ownership interest in associate",
        "terseLabel": "Proportion of ownership interest in associate",
        "verboseLabel": "Group share"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interest in an associate attributable to the entity. [Refer: Total for all associates [member]]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r60",
      "r149"
     ]
    },
    "ifrs-full_ProportionOfOwnershipInterestInJointVenture": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProportionOfOwnershipInterestInJointVenture",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of ownership interest in joint venture",
        "terseLabel": "Proportion of ownership interest in joint venture"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r60",
      "r149"
     ]
    },
    "aeg_ProportionOfSCRHigherCapitalRequirement": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProportionOfSCRHigherCapitalRequirement",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion Of SCR Higher Capital Requirement",
        "terseLabel": "Percentage of higher capital requirement in SCR",
        "documentation": "Proportion of scr higher capital requirement."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProportionOfVotingRightsHeldInJointVenture": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProportionOfVotingRightsHeldInJointVenture",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportion of voting rights held in joint venture",
        "terseLabel": "Proportion of voting power held in joint venture"
       }
      },
      "en": {
       "role": {
        "documentation": "The proportion of the voting rights in a joint venture held by the entity. [Refer: Total for all joint ventures [member]]"
       }
      }
     },
     "auth_ref": [
      "r55",
      "r60",
      "r149"
     ]
    },
    "aeg_ProportionsGroupSolvencyTwoRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ProportionsGroupSolvencyTwoRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Proportions Group Solvency Two Ratio",
        "terseLabel": "Proportions Group Solvency Two Ratio",
        "documentation": "Proportions group solvency two ratio."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ProvisionUsedOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProvisionUsedOtherProvisions",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provision used, other provisions",
        "negatedTerseLabel": "Used during the year"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r84",
      "r501"
     ]
    },
    "ifrs-full_Provisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Provisions",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 36.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail",
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provisions",
        "verboseLabel": "Provisions",
        "totalLabel": "Provisions",
        "periodStartLabel": "Beginning balance on January 1",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities of uncertain timing or amount, including provisions for employee benefits."
       }
      }
     },
     "auth_ref": [
      "r631"
     ]
    },
    "ifrs-full_ProvisionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ProvisionsAbstract",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Provisions [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_PurchaseOfDerivativesClassifiedAsOperatingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PurchaseOfDerivativesClassifiedAsOperatingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": 1.0,
       "order": 27.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase Of Derivatives Classified As Operating Activities",
        "negatedLabel": "Purchase of derivatives",
        "documentation": "Purchase of derivatives classified as operating activities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of intangible assets, classified as investing activities",
        "negatedLabel": "Purchase of intangible assets (other than future servicing rights)"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchases of intangible assets, classified as investing activities. [Refer: Intangible assets other than goodwill]"
       }
      }
     },
     "auth_ref": [
      "r696"
     ]
    },
    "ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesSummaryOfCommitmentsThroughPurchaseAndSaleTransactionsOfInvestmentsDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of interests in investments accounted for using equity method",
        "negatedLabel": "Acquisition/capital contributions joint ventures and associates",
        "terseLabel": "Purchase"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchase of interests in investments accounted for using the equity method. [Refer: Investments accounted for using equity method]"
       }
      }
     },
     "auth_ref": [
      "r930"
     ]
    },
    "aeg_PurchaseOfInvestmentsOtherThanMoneyMarketInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PurchaseOfInvestmentsOtherThanMoneyMarketInvestments",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "aeg_CashFlowMovementsOnOperatingItemsNotReflectedInIncome",
       "weight": 1.0,
       "order": 28.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of investments other than money market investments",
        "negatedLabel": "Purchase of investments (other than money market investments)",
        "documentation": "Purchase of investments other than money market investments."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInInvestingActivities",
       "weight": -1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CondensedCashFlowStatementOfAegonLtdDetail",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchase of property, plant and equipment, classified as investing activities",
        "negatedLabel": "Purchase of equipment and real estate for own use",
        "negatedTerseLabel": "Purchase of equipment"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment]"
       }
      }
     },
     "auth_ref": [
      "r696"
     ]
    },
    "aeg_PurchasedOrOriginatedCreditImpairedFinancialAssetsRecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "PurchasedOrOriginatedCreditImpairedFinancialAssetsRecognized",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchased Or Originated Credit Impaired Financial Assets Recognized",
        "terseLabel": "Purchased or originated credit impaired financial assets recognized",
        "documentation": "Purchased or originated credit impaired financial assets recognized."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_PurchasesFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "PurchasesFairValueMeasurementAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Purchases, fair value measurement, assets",
        "terseLabel": "Purchases"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase in the fair value measurement of assets resulting from purchases of those assets. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "ecd_PvpTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PvpTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance Disclosure [Table]",
        "terseLabel": "Pay vs Performance Disclosure"
       }
      }
     },
     "auth_ref": [
      "r841"
     ]
    },
    "ecd_PvpTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "PvpTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pay vs Performance [Table Text Block]",
        "terseLabel": "Pay vs Performance Disclosure, Table"
       }
      }
     },
     "auth_ref": [
      "r841"
     ]
    },
    "aeg_QuotedPlanAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "QuotedPlanAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Quoted Plan Assets [member]",
        "terseLabel": "Quoted Plan Assets [member]",
        "documentation": "Quoted plan assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RMBMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RMBMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationCreditRatingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "RMB [member]",
        "terseLabel": "RMBs CMBSs ABSs [member]",
        "documentation": "RMB."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RangeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RangeAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range [axis]",
        "terseLabel": "Range [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r123",
      "r187",
      "r248",
      "r274",
      "r445",
      "r711",
      "r713",
      "r938"
     ]
    },
    "ifrs-full_RangeDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RangeDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/GeneralInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range [domain]",
        "terseLabel": "Range [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregate ranges. It also represents the standard value for the 'Range' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r123",
      "r187",
      "r248",
      "r274",
      "r445",
      "r711",
      "r713",
      "r938"
     ]
    },
    "aeg_RangeEightMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RangeEightMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range Eight [member]",
        "verboseLabel": "EUR 136 million [member]",
        "terseLabel": "EUR 136 million [member]",
        "documentation": "Range eight."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RangeFiveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RangeFiveMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range five[member]",
        "terseLabel": "EUR 950 million [member]",
        "documentation": "Range five."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RangeNineMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RangeNineMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range Nine [member]",
        "verboseLabel": "EUR 203 million [member]",
        "terseLabel": "EUR 203 million [member]",
        "documentation": "Range nine."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RangeOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RangeOneMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsSummaryOfPerpetualContingentConvertibleParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range One [member]",
        "presentationGuidance": "EUR 500 million [member]",
        "documentation": "Range one."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RangeSevenMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RangeSevenMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range Seven [member]",
        "verboseLabel": "EUR 114 million [member]",
        "terseLabel": "EUR 114 million [member]",
        "documentation": "Range seven."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RangeThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RangeThreeMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Range Three [member]",
        "terseLabel": "USD 500 million [member]",
        "documentation": "Range three."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RatioAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RatioAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ratio [Axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RatioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RatioMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ratio [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RbcCalMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RbcCalMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "RBC Cal [Member]",
        "documentation": "RBC Cal."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "(Re)Insurance contracts and investment contracts with discretionary participation features [Abstract]",
        "documentation": "Insurance reinsurance including contracts held and investment contracts with discretionary participating features [Abstract]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RealEstate1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RealEstate1Member",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Real estate 1 [member]",
        "terseLabel": "Real estate [member]",
        "documentation": "Real estate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RealEstateHeldForOwnUseAndEquipment": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RealEstateHeldForOwnUseAndEquipment",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail": {
       "parentTag": "aeg_OtherAssetsAndReceivables",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Real estate held for own use and equipment",
        "terseLabel": "Real estate held for own use and equipment",
        "documentation": "Real estate held for own use and equipment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RealEstateHeldForOwnUseMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RealEstateHeldForOwnUseMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfRealEstateHeldForOwnUseAndEquipmentDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Real estate held for own use [member]",
        "terseLabel": "Real estate held for own use [member]",
        "verboseLabel": "Real estate held for own use (revalued amount) [Member]",
        "documentation": "Real estate held for own use."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RealEstateProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RealEstateProperty",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail": {
       "parentTag": "aeg_Collateral",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Real Estate Property",
        "terseLabel": "Real estate property collateral",
        "documentation": "Real estate property."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RealisedGainsAndLossesOnFinancialInvestmentsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RealisedGainsAndLossesOnFinancialInvestmentsAbstract",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Realised Gains And Losses on Financial Investments [Abstract]",
        "verboseLabel": "Realised gains and (losses) on financial investments",
        "terseLabel": "Realized gains and (losses) on financial investments",
        "documentation": "Realised Gains And Losses on Financial Investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RealizedGainLossInReconciliationOfDebtFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RealizedGainLossInReconciliationOfDebtFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Realized Gain Loss In Reconciliation Of Debt From Financing Activities",
        "terseLabel": "Realized gains / (losses)",
        "documentation": "Realized gain loss in reconciliation of debt from financing activities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReasonAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReasonAxis",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reason [Axis]",
        "terseLabel": "Reason [Axis]",
        "documentation": "Reason [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReasonDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReasonDomain",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reason [Domain]",
        "terseLabel": "Reason [Domain]",
        "documentation": "Reason [Domain]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReceivableAndPayableRelatedToInsuranceContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReceivableAndPayableRelatedToInsuranceContracts",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivable and payable related to insurance contracts",
        "terseLabel": "Payables due to brokers and agents",
        "documentation": "Receivable and payable related to insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Receivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Receivables",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail": {
       "parentTag": "aeg_OtherAssetsAndReceivables",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivables",
        "terseLabel": "Receivables",
        "documentation": "Receivables."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReceivablesFromBrokersAndAgents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReceivablesFromBrokersAndAgents",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivables from brokers and agents",
        "negatedLabel": "Receivables from brokers and agents",
        "documentation": "Receivables from brokers and agents."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReceivablesFromPolicyHolders": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReceivablesFromPolicyHolders",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivables from policy holders",
        "negatedLabel": "Receivables from policyholders",
        "documentation": "Receivables from policy holders."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReceivablesMaturity": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReceivablesMaturity",
     "presentation": [
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivables maturity",
        "terseLabel": "Receivables from group companies and other receivables, maturity",
        "documentation": "Receivables maturity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail": {
       "parentTag": "aeg_ImpactOfOtherComprehensiveIncomeDueToInsuranceInvestmentReturn",
       "weight": -1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reclassification adjustments on financial assets measured at fair value through other comprehensive income, net of tax",
        "negatedLabel": "Realized gains / (losses) on disposal of financial assets(FVOCI)"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of reclassification adjustments related to financial assets measured at fair value through other comprehensive income, net of tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r674"
     ]
    },
    "aeg_ReclassificationFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReclassificationFairValueMeasurementAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reclassification Fair Value Measurement Assets",
        "terseLabel": "Reclassification",
        "documentation": "Reclassification fair value measurement assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReclassifiedItemsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReclassifiedItemsAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reclassified items [axis]",
        "terseLabel": "Reclassified items [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r432",
      "r598",
      "r622"
     ]
    },
    "ifrs-full_ReclassifiedItemsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReclassifiedItemsDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reclassified items [domain]",
        "terseLabel": "Reclassified items [domain]"
       }
      }
     },
     "auth_ref": [
      "r432",
      "r598",
      "r622"
     ]
    },
    "ifrs-full_RecognisedAssetsDefinedBenefitPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RecognisedAssetsDefinedBenefitPlan",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 64.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit asset",
        "terseLabel": "Defined benefit assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "ifrs-full_RecognisedLiabilitiesDefinedBenefitPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RecognisedLiabilitiesDefinedBenefitPlan",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 45.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net defined benefit liability",
        "terseLabel": "Defined benefit liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of deficit in a defined benefit plan. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_RecognizedAssetsDefinedBenefitPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RecognizedAssetsDefinedBenefitPlan",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Recognized Assets Defined Benefit Plan",
        "terseLabel": "Defined benefit assets",
        "documentation": "Recognized assets defined benefit plan."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reconciliation of accounting profit multiplied by applicable tax rates [abstract]",
        "verboseLabel": "Reconciliation between standard and effective tax",
        "terseLabel": "Reconciliation between standard and effective income tax:"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RecoverableAmountOfAssetOrCashgeneratingUnit",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Recoverable amount of asset or cash-generating unit",
        "terseLabel": "Recoverable amount of assets - cash generating unit"
       }
      },
      "en": {
       "role": {
        "documentation": "The higher of an asset\u2019s (or cash-generating unit\u2019s) fair value less costs of disposal and its value in use. [Refer: Total for all cash-generating units [member]]"
       }
      }
     },
     "auth_ref": [
      "r76"
     ]
    },
    "ecd_RecoveryOfErrCompDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RecoveryOfErrCompDisclosureLineItems",
     "lang": {
      "en-us": {
       "role": {
        "label": "Recovery of Erroneously Awarded Compensation Disclosure [Line Items]",
        "terseLabel": "Recovery of Erroneously Awarded Compensation Disclosure"
       }
      }
     },
     "auth_ref": [
      "r808",
      "r819",
      "r829",
      "r862"
     ]
    },
    "ifrs-full_RecurringFairValueMeasurementMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RecurringFairValueMeasurementMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Recurring fair value measurement [member]",
        "terseLabel": "Recurring fair value measurement [member]"
       }
      }
     },
     "auth_ref": [
      "r175",
      "r581"
     ]
    },
    "ifrs-full_ReductionOfIssuedCapital": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReductionOfIssuedCapital",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reduction of issued capital",
        "negatedLabel": "Shares withdrawn"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in equity resulting from a reduction in issued capital. [Refer: Issued capital]"
       }
      }
     },
     "auth_ref": [
      "r946"
     ]
    },
    "aeg_ReimbursementRightAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReimbursementRightAtFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail": {
       "parentTag": "ifrs-full_SurplusDeficitInPlan",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reimbursement Right At Fair Value",
        "verboseLabel": "Fair value of reimbursement rights",
        "documentation": "Reimbursement right at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReimbursementRightsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReimbursementRightsAtFairValue",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail": {
       "parentTag": "ifrs-full_OtherNoncurrentNonfinancialAssets",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 58.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reimbursement rights related to defined benefit obligation, at fair value",
        "terseLabel": "Reimbursement rights",
        "periodStartLabel": "Beginning Balance",
        "periodEndLabel": "End Balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the entity's rights to the reimbursement by another party of some or all of the expenditure required to settle a defined benefit obligation recognised as a separate asset and measured at fair value. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r21",
      "r472"
     ]
    },
    "aeg_ReimbursementRightsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReimbursementRightsMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reimbursement Rights [Member]",
        "verboseLabel": "Reimbursement Rights [Member]",
        "documentation": "Reimbursement rights."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReimbursementRightsRetirementBenefitPlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReimbursementRightsRetirementBenefitPlansMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reimbursement Rights Retirement Benefit Plans [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceAmount",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Amount",
        "terseLabel": "Net income / (expenses) on reinsurance held",
        "documentation": "Reinsurance amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance assets [member]",
        "terseLabel": "Reinsurance assets [member]",
        "documentation": "Reinsurance assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceAssumedFromOtherCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceAssumedFromOtherCompanies",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Assumed from Other Companies",
        "terseLabel": "Assumed from other companies",
        "documentation": "Reinsurance Assumed from Other Companies"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceContractsHeld",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Contracts Held",
        "terseLabel": "Reinsurance contracts held",
        "documentation": "Reinsurance contracts held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceContractsHeldAssetsGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceContractsHeldAssetsGross",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditQualityOfGrossPositionsOfReinsuranceAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Contracts Held Assets Gross",
        "terseLabel": "Reinsurance\u00a0contract\u00a0assets",
        "documentation": "Reinsurance contracts held assets gross."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceContractsHeldLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceContractsHeldLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Contracts Held Liabilities",
        "periodEndLabel": "Closing liabilities, Reinsurance",
        "periodStartLabel": "Opening liabilities, Reinsurance",
        "documentation": "Reinsurance contracts held that are liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceContractsHeldLiabilitiesAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceContractsHeldLiabilitiesAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Contracts Held Liabilities Assets",
        "periodEndLabel": "Net closing balance, Reinsurance",
        "periodStartLabel": "Net opening balance, Reinsurance",
        "documentation": "Reinsurance contracts held liabilities assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceContractsHeldLiabilitiesAssetsNet": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceContractsHeldLiabilitiesAssetsNet",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Contracts Held Liabilities Assets Net",
        "verboseLabel": "Reinsurance contracts net balance",
        "documentation": "Reinsurance contracts held liabilities assets net."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReinsuranceContractsHeldMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReinsuranceContractsHeldMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksDisclsureOfRelationshipBetweenAmountsPayableOnDemandThatAriseFromContractsWithInScopeOfIfrs17AndCarryingAmountOfRelatedGroupsOfContractsDetails",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsExpectedReleaseOfRiskAdjustmentDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfContractualServiceMarginByTransitionMethodDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMaturityAnalysisContractualServiceMarginDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance contracts held [member]",
        "verboseLabel": "Reinsurance contracts held, in a liability position [member]",
        "terseLabel": "Reinsurance contracts held [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for reinsurance contracts held. Reinsurance contracts are insurance contracts issued by one entity (the reinsurer) to compensate another entity for claims arising from one or more insurance contracts issued by that other entity (underlying contracts). [Refer: Insurance contracts [domain]]"
       }
      }
     },
     "auth_ref": [
      "r239",
      "r241",
      "r255",
      "r257",
      "r268"
     ]
    },
    "ifrs-full_ReinsuranceContractsHeldThatAreAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReinsuranceContractsHeldThatAreAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 8.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_NoncurrentAssets",
       "weight": 1.0,
       "order": 56.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfInsuranceContractsAndReinsuranceContractsByTypeDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance contracts held that are assets",
        "terseLabel": "Reinsurance\u00a0contract\u00a0assets",
        "verboseLabel": "ReInsurance contract assets",
        "periodEndLabel": "Closing assets, Reinsurance",
        "periodStartLabel": "Opening assets, Reinsurance",
        "presentationGuidance": "Ceded to other companies"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of reinsurance contracts held that are assets. [Refer: Assets; Reinsurance contracts held [member]]"
       }
      }
     },
     "auth_ref": [
      "r261",
      "r627"
     ]
    },
    "ifrs-full_ReinsuranceContractsHeldThatAreLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReinsuranceContractsHeldThatAreLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail": {
       "parentTag": "ifrs-full_Liabilities",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfAssetsAndLiabilitiesForGroupsOfInsuranceContractsIssuedAndReinsuranceContractsHeldByMeasurementModelDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance contracts held that are liabilities",
        "verboseLabel": "Reinsurance contract liabilities",
        "definitionGuidance": "ReInsurance contract liabilities",
        "periodEndLabel": "Closing liabilities, Reinsurance",
        "periodStartLabel": "Opening liabilities, Reinsurance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of reinsurance contracts held that are liabilities. [Refer: Liabilities; Reinsurance contracts held [member]]"
       }
      }
     },
     "auth_ref": [
      "r262",
      "r633"
     ]
    },
    "aeg_ReinsurancePercentageAmountAssumedToNet": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsurancePercentageAmountAssumedToNet",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIvSummaryOfReinsuranceDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance percentage amount assumed to net",
        "terseLabel": "% of amount assumed to net",
        "documentation": "Reinsurance percentage amount assumed to net"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsurancePremiumsPaid": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsurancePremiumsPaid",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Premiums Paid",
        "terseLabel": "Reinsurance premiums paid",
        "documentation": "Reinsurance premiums paid."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReinsuranceSubsidiaryOfAssociateMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReinsuranceSubsidiaryOfAssociateMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reinsurance Subsidiary Of Associate [Member]",
        "documentation": "Reinsurance subsidiary of associate."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RelatedPartyTransactionsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RelatedPartyTransactionsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Related party transactions [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RelatedPartyTransactionsComponentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RelatedPartyTransactionsComponentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Related Party Transactions Components Explanatory",
        "terseLabel": "Related Party Transactions With Joint Ventures And Associates",
        "documentation": "Related party transactions components."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReleaseOfTheContractualServiceMarginForServicesReceived": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReleaseOfTheContractualServiceMarginForServicesReceived",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Release of the Contractual Service Margin for Services Received",
        "terseLabel": "Release of the contractual service margin for services received",
        "documentation": "Release of the contractual service margin for services received."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RemainingAmortisationOfFutureServicingRights": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RemainingAmortisationOfFutureServicingRights",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remaining Amortisation Of Future Servicing Rights",
        "verboseLabel": "Remaining amortization of future servicing rights",
        "documentation": "Remaining amortisation of future servicing rights."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RemainingAmortisationPeriodOfIntangibleAssetsMaterialToEntity2019": {
     "xbrltype": "durationItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RemainingAmortisationPeriodOfIntangibleAssetsMaterialToEntity2019",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remaining amortisation period of intangible assets material to entity",
        "verboseLabel": "Remaining amortisation period of intangible assets material to entity"
       }
      }
     },
     "auth_ref": [
      "r93",
      "r509"
     ]
    },
    "aeg_RemainingAverageDurationOfDefinedBenefitsObligation": {
     "xbrltype": "decimalItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RemainingAverageDurationOfDefinedBenefitsObligation",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remaining Average Duration of Defined Benefits Obligation",
        "terseLabel": "Remaining average duration of defined benefits obligation",
        "documentation": "Remaining average duration of defined benefits obligation."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RemainingContractualUndiscountedCashOutflowsInflowsThatAriseFromContractsWithinScopeOfIFRS17ThatAreLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RemainingContractualUndiscountedCashOutflowsInflowsThatAriseFromContractsWithinScopeOfIFRS17ThatAreLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisInsuranceAndReinsuranceContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remaining contractual undiscounted cash outflows (inflows) that arise from contracts within scope of IFRS 17 that are liabilities",
        "terseLabel": "Undiscounted best estimate liability"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of the remaining contractual undiscounted cash outflows (inflows) that arise from contracts within the scope of IFRS 17 that are liabilities."
       }
      }
     },
     "auth_ref": [
      "r256"
     ]
    },
    "aeg_RemainingUsefulLivesOrAmortizationRatesIntangibleAssetsOtherThanGoodwill": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RemainingUsefulLivesOrAmortizationRatesIntangibleAssetsOtherThanGoodwill",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remaining useful lives or amortization rates intangible assets other than goodwill",
        "terseLabel": "Remaining average amortization period",
        "documentation": "Remaining useful lives or amortization rates intangible assets other than goodwill."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RemainingWeightedAverageDurationOfOtherPostEmploymentBenefitPlans": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RemainingWeightedAverageDurationOfOtherPostEmploymentBenefitPlans",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remaining Weighted Average Duration Of Other Post Employment Benefit Plans",
        "terseLabel": "Remaining weighted average duration of other post employment benefit plans",
        "documentation": "Remaining weighted average duration of other post employment benefit plans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RemeasurementsOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RemeasurementsOfDefinedBenefitPlans",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Remeasurements of defined benefit plans",
        "terseLabel": "Remeasurements of defined benefit plans",
        "documentation": "Remeasurements of defined benefit plans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RentalIncomeFromOtherInvestmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RentalIncomeFromOtherInvestmentMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rental Income From Other Investment [Member]",
        "terseLabel": "Rental income [Member]",
        "documentation": "Rental income from other investment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RepaymentOfReconciliationOfDebtFromFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RepaymentOfReconciliationOfDebtFromFinancingActivities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Repayment Of Reconciliation Of Debt From Financing Activities",
        "terseLabel": "Repayment",
        "documentation": "Repayment of reconciliation of debt from financing activities."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RepaymentsOfBorrowingsClassifiedAsFinancingActivities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInFinancingActivities",
       "weight": -1.0,
       "order": 49.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Repayments of borrowings, classified as financing activities",
        "negatedLabel": "Repayment of TRUPS 1, subordinated loans and borrowings"
       }
      },
      "en": {
       "role": {
        "documentation": "The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]"
       }
      }
     },
     "auth_ref": [
      "r700"
     ]
    },
    "ifrs-full_ReportableSegmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReportableSegmentsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reportable segments [member]",
        "terseLabel": "Segment total [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for operating segments for which IFRS 8 requires information to be disclosed. The entity shall report separately information about an operating segment that meets any of the following quantitative thresholds: (a) reported revenue, including both sales to external customers and intersegment sales or transfers, is 10 per cent or more of the combined revenue, internal and external, of all operating segments; (b) the absolute amount of its reported profit or loss is 10 per cent or more of the greater, in absolute amount, of (i) the combined reported profit of all operating segments that did not report a loss and (ii) the combined reported loss of all operating segments that reported a loss; or (c) assets are 10 per cent or more of the combined assets of all operating segments. Additionally operating segments that do not meet any of the quantitative thresholds may be considered reportable, and separately disclosed, if management believes that information about the segment would be useful to users of the financial statements. [Refer: Operating segments [member]]"
       }
      }
     },
     "auth_ref": [
      "r189",
      "r364",
      "r417",
      "r685",
      "r722"
     ]
    },
    "ifrs-full_ReserveOfCashFlowHedgesHedgingRelationshipsForWhichHedgeAccountingIsNoLongerApplied": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfCashFlowHedgesHedgingRelationshipsForWhichHedgeAccountingIsNoLongerApplied",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of cash flow hedges, hedging relationships for which hedge accounting is no longer applied",
        "verboseLabel": "Economic hedges where no hedge accounting is applied"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the reserve of cash flow hedges in relation to hedging relationships for which hedge accounting is no longer applied. [Refer: Reserve of cash flow hedges]"
       }
      }
     },
     "auth_ref": [
      "r315"
     ]
    },
    "ifrs-full_ReserveOfCashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfCashFlowHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of cash flow hedges [member]",
        "terseLabel": "Reserve of cash flow hedges [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing the accumulated portion of gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges. [Refer: Cash flow hedges [member]]"
       }
      }
     },
     "auth_ref": [
      "r378",
      "r784"
     ]
    },
    "aeg_ReserveOfEquityMovementsOfAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfEquityMovementsOfAssociates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of equity movements of associates",
        "terseLabel": "Equity movements of associates",
        "documentation": "Reserve of equity movements of associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReserveOfEquityMovementsOfJointVentures": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfEquityMovementsOfJointVentures",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of equity movements of joint ventures",
        "terseLabel": "Equity movements of joint ventures",
        "documentation": "Reserve of equity movements of joint ventures."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReserveOfExchangeDifferencesOnTranslation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfExchangeDifferencesOnTranslation",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of exchange differences on translation",
        "verboseLabel": "Movements in foreign currency translation and net foreign investment hedging reserves"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing exchange differences on translation of financial statements recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r35",
      "r480"
     ]
    },
    "ifrs-full_ReserveOfExchangeDifferencesOnTranslationContinuingHedges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfExchangeDifferencesOnTranslationContinuingHedges",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of exchange differences on translation, continuing hedges",
        "terseLabel": "Cash flow hedge / currency translation reserve, Continuing hedges"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the reserve of exchange differences on translation in relation to continuing hedges. [Refer: Reserve of exchange differences on translation]"
       }
      }
     },
     "auth_ref": [
      "r314"
     ]
    },
    "aeg_ReserveOfExchangeDifferencesOnTranslationDiscontinuingHedges": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfExchangeDifferencesOnTranslationDiscontinuingHedges",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve Of Exchange Differences On Translation Discontinuing Hedges",
        "terseLabel": "Cash flow hedge / currency translation reserve, Discontinued hedges",
        "documentation": "Reserve of exchange differences on translation discontinuing hedges."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReserveOfFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLossMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLossMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of finance income (expenses) from reinsurance contracts held excluded from profit or loss [member]",
        "terseLabel": "Reinsurance contracts held [member]"
       }
      }
     },
     "auth_ref": [
      "r784"
     ]
    },
    "ifrs-full_ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReserveForInvestmentsMeasuredAtFvociDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of gains and losses on financial assets measured at fair value through other comprehensive income",
        "terseLabel": "Revaluation reserve for investments measured at FVOCI"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the reserve of gains and losses on financial assets measured at fair value through other comprehensive income. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r952"
     ]
    },
    "ifrs-full_ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member]",
        "terseLabel": "Investments measured\u00a0at fair\u00a0value through\u00a0OCI [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing the accumulated gains and losses on financial assets measured at fair value through other comprehensive income. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r784"
     ]
    },
    "aeg_ReserveOfInsuranceContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfInsuranceContractsMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of insurance contracts [Member]",
        "terseLabel": "Insurance contracts [member]",
        "documentation": "Reserve of insurance contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReserveOfOtherReserveTaxEffect": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfOtherReserveTaxEffect",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfOtherReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve Of Other Reserve Tax Effect",
        "terseLabel": "Tax effect",
        "documentation": "Reserve of other reserve tax effect."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfRemeasurementsOfDefinedBenefitPlans",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of remeasurements of defined benefit plans",
        "terseLabel": "Remeasurement of defined benefit plans",
        "periodStartLabel": "At January 1",
        "periodEndLabel": "Total remeasurement of defined benefit plans"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the accumulated remeasurements of defined benefit plans. [Refer: Defined benefit plans [domain]]"
       }
      }
     },
     "auth_ref": [
      "r952"
     ]
    },
    "ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReserveOfRemeasurementsOfDefinedBenefitPlansMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of remeasurements of defined benefit plans [member]",
        "verboseLabel": "Remeasurement of defined benefit plans [member]",
        "terseLabel": "Remeasurement of defined benefit Plans of group companies [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity resulting from remeasurements of defined benefit plans. [Refer: Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans]"
       }
      }
     },
     "auth_ref": [
      "r784"
     ]
    },
    "aeg_ReserveOfRemeasurementsOfDefinedBenefitPlansNetExchangeDifferences": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfRemeasurementsOfDefinedBenefitPlansNetExchangeDifferences",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of remeasurements of defined benefit plans net exchange differences",
        "terseLabel": "Net exchange differences",
        "documentation": "Reserve of remeasurements of defined benefit plans net exchange differences."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReserveOfRemeasurementsOfDefinedBenefitPlansOfGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfRemeasurementsOfDefinedBenefitPlansOfGroupCompanies",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 71.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve Of Remeasurements Of Defined Benefit Plans Of Group Companies",
        "verboseLabel": "Remeasurement of defined benefit plans of group companies",
        "documentation": "Reserve of remeasurements of defined benefit plans of group companies."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReserveOfRemeasurementsOfDefinedBenefitPlansTaxEffect": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReserveOfRemeasurementsOfDefinedBenefitPlansTaxEffect",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRemeasurementOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reserve of remeasurements of defined benefit plans tax effect",
        "terseLabel": "Tax effect",
        "documentation": "Reserve of remeasurements of defined benefit plans tax effect."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ResidentialMortgageBackedSecurities1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResidentialMortgageBackedSecurities1Member",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfIncomeReceivedFromInvestmentsInRmbssSmbssAndAbssDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Residential Mortgage Backed Securities 1 [member]",
        "verboseLabel": "Residential mortgage-backed securities [member]",
        "documentation": "Residential mortgage- backed securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ResidentialMortgageBackedSecuritiesCommercialMortgageBackedSecuritiesAndAssetBackedSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResidentialMortgageBackedSecuritiesCommercialMortgageBackedSecuritiesAndAssetBackedSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Residential Mortgage Backed Securities Commercial Mortgage Backed Securities And Asset Backed Securities [member]",
        "verboseLabel": "Residential mortgage-backed securities (RMBSs) [member]",
        "documentation": "Residential mortgage backed securities commercial mortgage backed securities and asset backed securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RestOfEuropeGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RestOfEuropeGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rest of Europe Government bonds [member]",
        "terseLabel": "Rest of Europe government bonds [member]",
        "documentation": "Rest of Europe government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RestOfWorldGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RestOfWorldGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rest of world Government bonds [member]",
        "terseLabel": "Rest of world government bonds [member]",
        "documentation": "Rest of world government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RestatedMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RestatedMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsForGeneralAccountsCompriseFinancialAssetsExcludingDerivativesAndInvestmentsInRealEstateDetail",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Currently stated [member]",
        "terseLabel": "Currently stated [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the information currently stated in the financial statements. It also represents the standard value for the 'Retrospective application and retrospective restatement' and 'Departure from requirement of IFRS' axes if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r129",
      "r132",
      "r245",
      "r449",
      "r451",
      "r454",
      "r609",
      "r950"
     ]
    },
    "srt_RestatementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RestatementAxis",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revision of Prior Period [Axis]",
        "documentation": "Information by adjustment to previously issued financial statements. Includes, but is not limited to, adjustment for retrospective application of amendment to accounting standards, other change in accounting principle, correction of error, and other revision."
       }
      }
     },
     "auth_ref": [
      "r414"
     ]
    },
    "ecd_RestatementDateAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RestatementDateAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Determination Date [Axis]",
        "terseLabel": "Restatement Determination Date:"
       }
      }
     },
     "auth_ref": [
      "r809",
      "r820",
      "r830",
      "r863"
     ]
    },
    "ecd_RestatementDeterminationDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RestatementDeterminationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Determination Date",
        "terseLabel": "Restatement Determination Date"
       }
      }
     },
     "auth_ref": [
      "r810",
      "r821",
      "r831",
      "r864"
     ]
    },
    "ecd_RestatementDoesNotRequireRecoveryTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "RestatementDoesNotRequireRecoveryTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restatement Does Not Require Recovery [Text Block]",
        "terseLabel": "Restatement does not require Recovery"
       }
      }
     },
     "auth_ref": [
      "r817",
      "r828",
      "r838",
      "r871"
     ]
    },
    "srt_RestatementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "RestatementDomain",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revision of Prior Period [Domain]",
        "documentation": "Adjustment to previously issued financial statements. Includes, but is not limited to, adjustment for retrospective application of amendment to accounting standards, other change in accounting principle, correction of error, and other revision."
       }
      }
     },
     "auth_ref": [
      "r414"
     ]
    },
    "ifrs-full_RestrictedCashAndCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RestrictedCashAndCashEquivalents",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restricted cash and cash equivalents",
        "terseLabel": "Cash and cash equivalents"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_RestrictedTierOneAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RestrictedTierOneAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restricted Tier One [Axis]",
        "documentation": "Restricted Tier One [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RestrictedTierOneDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RestrictedTierOneDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restricted Tier One [Domain]",
        "documentation": "Restricted Tier One."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RestructuringProvisionMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RestructuringProvisionMember",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Restructuring provision [member]",
        "terseLabel": "Restructuring provisions [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a provision for restructuring, such as the sale or termination of a line of business; closure of business locations in a country or region or relocation of activities from one country or region to another; changes in management structure; and fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. [Refer: Classes of other provisions [domain]]"
       }
      }
     },
     "auth_ref": [
      "r691"
     ]
    },
    "aeg_ResultBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResultBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": "ifrs-full_ProfitLoss",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Result Before Tax",
        "verboseLabel": "Result before tax from continuing operations",
        "documentation": "Result before tax."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ResultBeforeTaxFromContinuingAndDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResultBeforeTaxFromContinuingAndDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd": {
       "parentTag": "ifrs-full_CashFlowsFromUsedInOperatingActivities",
       "weight": -1.0,
       "order": 15.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Result Before Tax From Continuing And Discontinued Operations",
        "negatedTotalLabel": "Result before tax from continuing and discontinued operations",
        "documentation": "Result before tax from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ResultsFromFinancialTransactions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResultsFromFinancialTransactions",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "aeg_OtherNetInvestmentResult",
       "weight": 1.0,
       "order": 20.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherNetInvestmentResultDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Results From Financial Transactions",
        "terseLabel": "Results from financial transactions",
        "definitionGuidance": "For the year ended December\u00a031",
        "documentation": "Results from financial transactions."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ResultsFromFinancialTransactionsLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResultsFromFinancialTransactionsLineItems",
     "presentation": [
      "http://www.aegon.com/role/ResultsFromFinancialTransactions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Results From Financial Transactions [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ResultsfromfinancialtransactionsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ResultsfromfinancialtransactionsTable",
     "presentation": [
      "http://www.aegon.com/role/ResultsFromFinancialTransactions"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Results from financial transactions [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RetailMortgageLoansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetailMortgageLoansMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retail Mortgage Loans [member]",
        "terseLabel": "Retail mortgage loans [member]",
        "documentation": "Retail mortgage loans."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RetainedEarnings": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RetainedEarnings",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained earnings",
        "totalLabel": "Total retained earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "A component of equity representing the entity's cumulative undistributed earnings or deficit."
       }
      }
     },
     "auth_ref": [
      "r780",
      "r787",
      "r789"
     ]
    },
    "aeg_RetainedEarningsExcludingTreasuryShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetainedEarningsExcludingTreasuryShares",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_RetainedEarnings",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained Earnings Excluding Treasury Shares",
        "terseLabel": "Retained earnings",
        "documentation": "Retained earnings excluding treasury shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RetainedEarningsIncludingTreasuryShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetainedEarningsIncludingTreasuryShares",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 72.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained earnings including treasury shares",
        "verboseLabel": "Retained earnings, including treasury shares",
        "documentation": "Retained earnings including treasury shares."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RetainedEarningsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RetainedEarningsMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retained earnings [member]",
        "terseLabel": "Retained earnings [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing an entity's cumulative undistributed earnings or deficit."
       }
      }
     },
     "auth_ref": [
      "r613",
      "r784"
     ]
    },
    "aeg_RetirementBenefitPlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetirementBenefitPlanMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfFairValueOfPlanAssetsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement Benefit Plan [member]",
        "terseLabel": "Retirement Benefit Plans [member]",
        "documentation": "Retirement benefit plan."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RetirementBenefitPlansInDeficitMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetirementBenefitPlansInDeficitMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement benefit plans in deficit [member]",
        "terseLabel": "Retirement benefit plans in deficit [member]",
        "documentation": "Retirement benefit plans in deficit."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RetirementBenefitPlansInSurplusMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetirementBenefitPlansInSurplusMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement benefit plans in surplus [member]",
        "terseLabel": "Retirement benefit plans in surplus [member]",
        "documentation": "Retirement benefit plans in surplus."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RetirementPlansCashGeneratingUnitMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RetirementPlansCashGeneratingUnitMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement Plans Cash Generating Unit [member]",
        "terseLabel": "Retirement plans cash generating unit [member]",
        "documentation": "Retirement plans cash generating unit."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RetrospectiveApplicationAndRetrospectiveRestatementAxis",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail",
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retrospective application and retrospective restatement [axis]",
        "terseLabel": "Retrospective application and retrospective restatement [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r127",
      "r129",
      "r132",
      "r449",
      "r451",
      "r454",
      "r609"
     ]
    },
    "aeg_RevaluationAccount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevaluationAccount",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": -1.0,
       "order": 68.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation Account",
        "negatedLabel": "Revaluation account",
        "documentation": "Revaluation account."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RevaluationReserve": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevaluationReserve",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation Reserve",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "documentation": "Revaluation reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RevaluationReserveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevaluationReserveMember",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation Reserve [Member]",
        "verboseLabel": "Revaluation reserves [member]",
        "documentation": "Revaluation reserve."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RevaluationReservesGross": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevaluationReservesGross",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation Reserves Gross",
        "terseLabel": "Gross revaluation",
        "documentation": "Revaluation reserves gross."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RevaluationSurplusDeficit": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevaluationSurplusDeficit",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation Surplus Deficit",
        "positiveTerseLabel": "Revaluation reserves",
        "documentation": "Revaluation surplus deficit."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RevaluationSurplusDuringPeriod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevaluationSurplusDuringPeriod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SharesInGroupCompaniesSummaryOfSharesInGroupCompaniesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation Surplus During Period",
        "negatedLabel": "Revaluations",
        "documentation": "Revaluation surplus during period."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RevaluationSurplusMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevaluationSurplusMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfRevaluationReservesDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revaluation surplus [member]",
        "terseLabel": "Revaluation account [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for a component of equity representing accumulated revaluation surplus on the revaluation of assets recognised in other comprehensive income. [Refer: Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r12",
      "r138",
      "r784"
     ]
    },
    "ifrs-full_Revenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "Revenue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_RevenueAndOperatingIncome",
       "weight": 1.0,
       "order": 38.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsRelatedPartyTransactionsWithJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue",
        "totalLabel": "Total revenues",
        "terseLabel": "Revenue"
       }
      }
     },
     "auth_ref": [
      "r158",
      "r284",
      "r359",
      "r366",
      "r372",
      "r373",
      "r376",
      "r663",
      "r705",
      "r782",
      "r783"
     ]
    },
    "ifrs-full_RevenueAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueAbstract",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue [abstract]",
        "terseLabel": "Revenues"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RevenueAndOperatingIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueAndOperatingIncome",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue and other operating income",
        "totalLabel": "Total income"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "aeg_RevenueFromContinuingAndDiscontinuedOperations": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevenueFromContinuingAndDiscontinuedOperations",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue From Continuing And Discontinued Operations",
        "totalLabel": "Total revenues",
        "documentation": "Revenue from continuing and discontinued operations."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RevenueFromInterest": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RevenueFromInterest",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Interest income",
        "terseLabel": "Interest income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of income arising from interest."
       }
      }
     },
     "auth_ref": [
      "r164",
      "r360",
      "r370",
      "r948"
     ]
    },
    "aeg_RevenueGeneratingInvestments": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RevenueGeneratingInvestments",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue Generating Investments",
        "totalLabel": "Total revenue-generating investments",
        "documentation": "Revenue generating investments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ReversalAllowanceAccountForCreditLossesOnFinancialAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReversalAllowanceAccountForCreditLossesOnFinancialAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reversal Allowance Account For Credit Losses On Financial Assets",
        "verboseLabel": "Financial assets derecognized during the period",
        "documentation": "Reversal allowance account for credit losses on financial assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReversalOfImpairmentLossRecognisedInProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfImpairmentLossesReversalsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reversal of impairment loss recognised in profit or loss",
        "terseLabel": "Reversal of impairment loss recognised in profit or loss"
       }
      }
     },
     "auth_ref": [
      "r71",
      "r74",
      "r493"
     ]
    },
    "aeg_ReversalsOfALossRecoveryComponentOtherThanChangesInTheFcfOfReinsuranceContractsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReversalsOfALossRecoveryComponentOtherThanChangesInTheFcfOfReinsuranceContractsHeld",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/NetIncomeExpensesOnReinsuranceHeldSummaryOfNetIncomeExpensesOnReinsuranceHeldDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reversals of a Loss Recovery Component Other than Changes in the FCF of Reinsurance Contracts Held",
        "terseLabel": "Reversals of a loss-recovery component other than changes in the FCF of reinsurance contracts held",
        "documentation": "Reversals of a loss recovery component other than changes in the fcf of reinsurance contracts held."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherLiabilitiesSummaryOfOtherLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reverse repurchase agreements and cash collateral on securities borrowed",
        "verboseLabel": "Cash collateral on securities lent"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of instruments purchased for resale in reverse repurchase agreements and cash collateral on securities borrowed. [Refer: Repurchase agreements and cash collateral on securities lent]"
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_ReverseRepurchaseAgreementsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ReverseRepurchaseAgreementsMember",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfReverseRepurchaseAgreementsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Reverse repurchase agreements [member]",
        "terseLabel": "Reverse repurchase agreements [member]",
        "documentation": "Reverse repurchase agreements."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RightofuseAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RightofuseAssets",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail": {
       "parentTag": "ifrs-full_OtherNoncurrentNonfinancialAssets",
       "weight": 1.0,
       "order": 3.0
      },
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail": {
       "parentTag": "aeg_OtherAssetsAndReceivables",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/NonCurrentAssetsDisclosureOfNonCurrentAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivableSummaryOfInformationAboutRightOfUseAssetsDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfOtherAssetsAndReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Right-of-use assets",
        "terseLabel": "Right-of-use assets",
        "periodStartLabel": "On January 1",
        "periodEndLabel": "On December 31",
        "verboseLabel": "Lease assets"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee."
       }
      }
     },
     "auth_ref": [
      "r191",
      "r195",
      "r421"
     ]
    },
    "ifrs-full_RiskAdjustmentForNonfinancialRiskMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RiskAdjustmentForNonfinancialRiskMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNewContractsRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk adjustment for non-financial risk [member]",
        "terseLabel": "RA [member]",
        "verboseLabel": "Risk adjustment for\u00a0non-financial\u00a0risk [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the compensation an entity requires for bearing the uncertainty about the amount and timing of the cash flows that arises from non-financial risk as the entity fulfils insurance contracts."
       }
      }
     },
     "auth_ref": [
      "r200",
      "r203",
      "r237"
     ]
    },
    "aeg_RiskBasedCapitalRatio": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RiskBasedCapitalRatio",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk Based Capital Ratio",
        "terseLabel": "Risk based capital ratio",
        "documentation": "Risk based capital ratio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RiskBearsByEntityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RiskBearsByEntityMember",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk Bears By Entity [Member]",
        "terseLabel": "Aegon\u00a0risk [member]",
        "documentation": "Risk bears by entity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_RiskExposuresAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RiskExposuresAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk variables [axis]",
        "terseLabel": "Risk variables [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r254"
     ]
    },
    "ifrs-full_RiskExposuresDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "RiskExposuresDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfCarryingAmountOfCollateralPledgedAndTheCorrespondingAmountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk variables [domain]",
        "terseLabel": "Risk variables [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the risk variables. It also represents the standard value for the 'Risk variables' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r254"
     ]
    },
    "aeg_RiskMitigationAdjustmentToContractualServiceMargin": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RiskMitigationAdjustmentToContractualServiceMargin",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Risk Mitigation Adjustment to Contractual Service Margin",
        "terseLabel": "Risk mitigation adjustment to contractual service margin",
        "documentation": "Risk mitigation adjustment to contractual service margin."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_RoyalLondonMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "RoyalLondonMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Royal London [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ecd_Rule10b51ArrAdoptedFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "Rule10b51ArrAdoptedFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rule 10b5-1 Arrangement Adopted [Flag]",
        "terseLabel": "Rule 10b5-1 Arrangement Adopted"
       }
      }
     },
     "auth_ref": [
      "r880"
     ]
    },
    "ecd_Rule10b51ArrTrmntdFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "Rule10b51ArrTrmntdFlag",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Rule 10b5-1 Arrangement Terminated [Flag]",
        "terseLabel": "Rule 10b5-1 Arrangement Terminated"
       }
      }
     },
     "auth_ref": [
      "r880"
     ]
    },
    "aeg_SalesCommission": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SalesCommission",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sales Commission",
        "verboseLabel": "Sales commission",
        "documentation": "Sales commission."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SalesFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SalesFairValueMeasurementAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sales, fair value measurement, assets",
        "negatedLabel": "Sales"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in the fair value measurement of assets resulting from sales. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "aeg_SantanderSpainLifeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SantanderSpainLifeMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfFinancialInformationOfJointVenturesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Santander Spain Life [Member]",
        "verboseLabel": "Santander Spain Life [member]",
        "documentation": "Santander spain life."
       }
      }
     },
     "auth_ref": []
    },
    "srt_ScenarioUnspecifiedDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ScenarioUnspecifiedDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scenario [Domain]",
        "documentation": "Scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts."
       }
      }
     },
     "auth_ref": [
      "r414"
     ]
    },
    "aeg_ScheduleOfCarryingAmountOfGoodwillAllocatedToCashGeneratingUnitsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ScheduleOfCarryingAmountOfGoodwillAllocatedToCashGeneratingUnitsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Carrying Amount of Goodwill Allocated to Cash Generating Units Explanatory",
        "terseLabel": "Summary of Geographically Cash-generating Units to Goodwill",
        "documentation": "The schedule of carrying amount of goodwill allocated to cash generating units."
       }
      }
     },
     "auth_ref": []
    },
    "srt_ScheduleOfCondensedBalanceSheetTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ScheduleOfCondensedBalanceSheetTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrant"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Balance Sheet [Table Text Block]",
        "terseLabel": "Condensed financial information of registrant",
        "documentation": "Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations."
       }
      }
     },
     "auth_ref": [
      "r939"
     ]
    },
    "srt_ScheduleOfCondensedFinancialStatementsTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ScheduleOfCondensedFinancialStatementsTable",
     "presentation": [
      "http://www.aegon.com/role/CondensedFinancialInformationOfRegistrantAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Financial Statements [Table]",
        "terseLabel": "Condensed Financial Statements [Table]",
        "documentation": "Disclosure of information about condensed financial statements, including, but not limited to, the balance sheet, income statement, and statement of cash flows."
       }
      }
     },
     "auth_ref": [
      "r381",
      "r412"
     ]
    },
    "aeg_ScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Schedule of Sensitivity Analysis of Net Income and Shareholders' Equity Explanatory",
        "terseLabel": "Schedule of Sensitivity Analysis of Net Income and Shareholders' Equity",
        "documentation": "The disclosure of sensitivity analysis of net income and shareholders' equity."
       }
      }
     },
     "auth_ref": []
    },
    "srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
     "presentation": [
      "http://www.aegon.com/role/ValuationAndQualifyingAccounts"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]",
        "terseLabel": "Valuation and qualifying accounts",
        "documentation": "The entire disclosure for valuation and qualifying accounts and reserves."
       }
      }
     },
     "auth_ref": [
      "r387"
     ]
    },
    "aeg_SchemeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SchemeAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scheme [Axis]",
        "terseLabel": "Scheme [axis]",
        "documentation": "Scheme"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SchemeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SchemeMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scheme [Member]",
        "terseLabel": "Scheme [member]",
        "documentation": "Scheme"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ScottishEquitablePlcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ScottishEquitablePlcMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scottish Equitable Plc [member]",
        "terseLabel": "Scottish Equitable plc [member]",
        "documentation": "Scottish Equitable plc"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SecuritiesLendingIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SecuritiesLendingIncome",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FeesAndCommissionIncomeSummaryOfFeesAndCommissionIncomeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities Lending Income",
        "terseLabel": "Securities lending income",
        "documentation": "Securities lending income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SecuritiesLendingMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SecuritiesLendingMember",
     "presentation": [
      "http://www.aegon.com/role/TransfersOfFinancialAssetsSummaryOfSecuritiesLendingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Securities lending [member]",
        "terseLabel": "Securities lending [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the lending of securities in which the lender transfers securities in exchange for collateral provided by the borrower."
       }
      }
     },
     "auth_ref": [
      "r743",
      "r753"
     ]
    },
    "dei_Security12bTitle": {
     "xbrltype": "securityTitleItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "Security12bTitle",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Title of 12(b) Security",
        "documentation": "Title of a 12(b) registered security."
       }
      }
     },
     "auth_ref": [
      "r791"
     ]
    },
    "dei_SecurityExchangeName": {
     "xbrltype": "edgarExchangeCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "SecurityExchangeName",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security Exchange Name",
        "documentation": "Name of the Exchange on which a security is registered."
       }
      }
     },
     "auth_ref": [
      "r793"
     ]
    },
    "aeg_SegmentAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SegmentAxis",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment [Axis]",
        "terseLabel": "Segment [axis]",
        "documentation": "Segment [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SegmentConsolidationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SegmentConsolidationAxis",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment Consolidation [Axis]",
        "documentation": "Segment Consolidation"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SegmentConsolidationDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SegmentConsolidationDomain",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment Consolidation [Domain]",
        "documentation": "Segment Consolidation"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SegmentConsolidationItemsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SegmentConsolidationItemsAxis",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment consolidation items [axis]",
        "terseLabel": "Segment consolidation items [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r364"
     ]
    },
    "ifrs-full_SegmentConsolidationItemsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SegmentConsolidationItemsDomain",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment consolidation items [domain]",
        "terseLabel": "Segment consolidation items [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Segment consolidation items' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r371"
     ]
    },
    "srt_SegmentGeographicalDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "SegmentGeographicalDomain",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical [Domain]",
        "terseLabel": "Geographical [Domain]",
        "documentation": "Geographical area."
       }
      }
     },
     "auth_ref": [
      "r388",
      "r389",
      "r390",
      "r391",
      "r400",
      "r401",
      "r402",
      "r403",
      "r404",
      "r405",
      "r406",
      "r407",
      "r408",
      "r409",
      "r410",
      "r411"
     ]
    },
    "aeg_SegmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SegmentMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfNumberOfEmployeesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfOtherSelectedIncomeStatementItemsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment [Member]",
        "terseLabel": "Segment [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SeniorLeverage": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SeniorLeverage",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_GrossFinancialLeverage",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Senior Leverage",
        "verboseLabel": "Senior leverage",
        "terseLabel": "Senior debt for the gross financial leverage",
        "documentation": "Senior leverage."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ServiceConcessionRightsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ServiceConcessionRightsMember",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Service concession rights [member]",
        "terseLabel": "Service concession rights [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for service concession rights. [Refer: Service concession arrangements [domain]]"
       }
      }
     },
     "auth_ref": [
      "r927"
     ]
    },
    "ifrs-full_SettlementsFairValueMeasurementAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SettlementsFairValueMeasurementAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Settlements, fair value measurement, assets",
        "negatedLabel": "Settlements"
       }
      },
      "en": {
       "role": {
        "documentation": "The decrease in the fair value measurement of assets resulting from settlements. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r181"
     ]
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "All Award Types",
        "terseLabel": "All Award Types"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareBasedCompensationByShareBasedAwardEquityInstrumentsOptionsVestedAndShareOptionsForfeitedAmount": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareBasedCompensationByShareBasedAwardEquityInstrumentsOptionsVestedAndShareOptionsForfeitedAmount",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Based Compensation By Share Based Award Equity Instruments Options Vested And Share Options Forfeited Amount",
        "terseLabel": "Shares vested / Share options forfeited",
        "documentation": "Share based compensation by share based award equity instruments options vested and share options forfeited amount."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareBasedCompensationByShareBasedAwardSharesGrantedAndOptionsCostIncurred": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareBasedCompensationByShareBasedAwardSharesGrantedAndOptionsCostIncurred",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Based Compensation By Share Based Award Shares Granted And Options Cost Incurred",
        "terseLabel": "Shares granted / Share options cost incurred",
        "documentation": "Share based compensation by share based award shares granted and options cost incurred."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareBasedCompensationExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareBasedCompensationExpense",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail": {
       "parentTag": "ifrs-full_EmployeeBenefitsExpense",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share based compensation expense",
        "negatedLabel": "Shares",
        "documentation": "Share based compensation expense."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareBasedVariableCompensationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareBasedVariableCompensationMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Based Variable Compensation [Member]",
        "terseLabel": "Share based variable compensation [member]",
        "documentation": "Share based variable compensation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareBuyBackProgramAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareBuyBackProgramAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Buy Back Program [Axis]",
        "documentation": "Share buy back program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareBuyBackProgramDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareBuyBackProgramDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Buy Back Program [Domain]",
        "documentation": "Share buy back program."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareCapitalParValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareCapitalParValue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_IssuedCapital",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share capital par value",
        "terseLabel": "Share capital - par value",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance",
        "documentation": "Share capital par value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareInChangesInJointVenturesEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareInChangesInJointVenturesEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share in changes in joint ventures equity",
        "negatedLabel": "Share in changes in equity (note 25.6)",
        "documentation": "Share in changes in joint ventures equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareOfChangesInEquityInAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareOfChangesInEquityInAssociates",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Of Changes In Equity In Associates",
        "terseLabel": "Share in changes in equity (note 25.6)",
        "documentation": "Share of changes in equity in associates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareOfOtherComprehensiveIncomeOfAssociatesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareOfOtherComprehensiveIncomeOfAssociatesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 20.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 23.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Of Other Comprehensive Income Of Associates Accounted For Using Equity Method That Will Be Reclassified To Profit Or Loss, Before Tax",
        "terseLabel": "Equity movements of associates",
        "documentation": "Share of other comprehensive income of associates accounted for using equity method that will be reclassified to profit or loss, before tax."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax",
        "terseLabel": "Group share of other comprehensive income"
       }
      },
      "en": {
       "role": {
        "documentation": "The entity's share of the other comprehensive income of associates and joint ventures accounted for using the equity method, net of tax. [Refer: Total for all associates [member]; Investments accounted for using equity method; Total for all joint ventures [member]; Other comprehensive income]"
       }
      }
     },
     "auth_ref": [
      "r168",
      "r671"
     ]
    },
    "aeg_ShareOfOtherComprehensiveIncomeOfJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareOfOtherComprehensiveIncomeOfJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 21.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd": {
       "parentTag": "ifrs-full_OtherComprehensiveIncome",
       "weight": 1.0,
       "order": 24.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Of Other Comprehensive Income Of Joint Ventures Accounted For Using Equity Method That Will Be Reclassified To Profit Or Loss Before Tax",
        "terseLabel": "Equity movements of joint ventures",
        "documentation": "Share of other comprehensive income of joint ventures accounted for using equity method that will be reclassified to profit or loss before tax."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of profit (loss) of associates accounted for using equity method",
        "verboseLabel": "Share in profit / (loss) of associates"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "ifrs-full_ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of profit (loss) from continuing operations of associates and joint ventures accounted for using equity method",
        "terseLabel": "Group share of\u00a0post-tax\u00a0profit or loss"
       }
      }
     },
     "auth_ref": [
      "r167",
      "r579"
     ]
    },
    "ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_ProfitLossBeforeTax",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share of profit (loss) of joint ventures accounted for using equity method",
        "verboseLabel": "Share in profit / (loss) of joint ventures"
       }
      }
     },
     "auth_ref": [
      "r955"
     ]
    },
    "aeg_ShareOptionsAndIncentivePlansMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareOptionsAndIncentivePlansMember",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Options and Incentive Plans [Member]",
        "terseLabel": "Share options and incentive plans [member]",
        "documentation": "Share options and incentive plans."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SharePremium": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SharePremium",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_IssuedCapital",
       "weight": 1.0,
       "order": 2.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_Equity",
       "weight": 1.0,
       "order": 75.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfSharePremiumDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share premium",
        "terseLabel": "Share premium",
        "periodStartLabel": "Beginning balance",
        "periodEndLabel": "Ending balance"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount received or receivable from the issuance of the entity's shares in excess of nominal value."
       }
      }
     },
     "auth_ref": [
      "r780",
      "r787"
     ]
    },
    "aeg_ShareRepurchaseValueToMeetObligation": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareRepurchaseValueToMeetObligation",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share Repurchase Value To Meet Obligation",
        "terseLabel": "Share repurchase value to meet obligation",
        "documentation": "Share repurchase value to meet obligation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareholdersEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareholdersEquity",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "ifrs-full_CapitalReserve",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shareholders Equity",
        "terseLabel": "Shareholders' Equity",
        "definitionGuidance": "Total shareholders' equity - based on IFRS as adopted by the EU",
        "documentation": "Shareholders equity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareholdersEquityInFunctionalCurrency": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareholdersEquityInFunctionalCurrency",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shareholders Equity in Functional Currency",
        "terseLabel": "Equity in functional currency",
        "documentation": "Shareholders equity in functional currency."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareholdersEquityInNetProfitAndLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareholdersEquityInNetProfitAndLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationOnHistoricalNetResultAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shareholders Equity In Net Profit And Loss",
        "terseLabel": "Net result",
        "documentation": "Shareholders equity in net profit and loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShareholdersOfAegonLtd.Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShareholdersOfAegonLtd.Member",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shareholders of Aegon Ltd. [Member]",
        "terseLabel": "Shareholders of Aegon Ltd. [Member]",
        "documentation": "Shareholders of Aegon Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SharesInEntityHeldByExecutiveDirector": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SharesInEntityHeldByExecutiveDirector",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares In Entity Held By Executive Director",
        "terseLabel": "Shares held in the entity common shares held by Board of Directors",
        "documentation": "Shares in entity held by executive director."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SharesInEntityHeldByNonExecutiveDirectorTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SharesInEntityHeldByNonExecutiveDirectorTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares In Entity Held By Non Executive Director [Table Text Block]",
        "terseLabel": "Common Shares Held by Non-Executive Directors",
        "documentation": "Shares in entity held by non executive director."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SharesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares [Member]",
        "terseLabel": "Shares [member]",
        "verboseLabel": "Shares [member]",
        "documentation": "Shares."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SharesOfProfitLossOfAssociatesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SharesOfProfitLossOfAssociatesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares Of Profit Loss Of Associates Accounted For Using Equity Method",
        "terseLabel": "Share in net income",
        "documentation": "Shares of profit loss of associates accounted for using equity method."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SharesOfProfitLossOfJointVenturesAccountedForUsingEquityMethod": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SharesOfProfitLossOfJointVenturesAccountedForUsingEquityMethod",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfInvestmentsInJointVenturesAndAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares Of Profit Loss Of Joint Ventures Accounted For Using Equity Method",
        "terseLabel": "Share in net income",
        "documentation": "Shares of profit loss of joint ventures accounted for using equity method."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SharesRepurchasedAveragePricePerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SharesRepurchasedAveragePricePerShare",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Shares Repurchased Average Price Per Share",
        "terseLabel": "Common shares repurchased average price per share",
        "documentation": "Shares repurchased average price per share."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ShortTermBorrowingsAtFairValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShortTermBorrowingsAtFairValue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Short Term Borrowings At Fair Value",
        "terseLabel": "Current",
        "documentation": "Short term borrowings at fair value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ShorttermDepositsClassifiedAsCashEquivalents",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail": {
       "parentTag": "ifrs-full_CashAndCashEquivalents",
       "weight": 1.0,
       "order": 2.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Short-term deposits, classified as cash equivalents",
        "terseLabel": "Short-term deposits"
       }
      },
      "en": {
       "role": {
        "documentation": "A classification of cash equivalents representing short-term deposits. [Refer: Cash equivalents]"
       }
      }
     },
     "auth_ref": [
      "r934"
     ]
    },
    "aeg_ShorttermDepositsMaturity": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ShorttermDepositsMaturity",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Short-term deposits maturity",
        "definitionGuidance": "Average maturity on short-term deposits (in days)",
        "documentation": "Short-term deposits maturity."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SicoobSeguradodeDeVidaePrevidenciaSaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SicoobSeguradodeDeVidaePrevidenciaSaMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Sicoob Seguradode De Vidae Previdencia SA [Member]",
        "terseLabel": "Sicoob Seguradode De Vidae Previdencia SA [Member]",
        "documentation": "Sicoob Seguradode de Vida e Previdencia S.A."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SignificantInvestmentsInAssociatesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInAssociatesAxis",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Associates [axis]",
        "terseLabel": "Associates [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r172",
      "r576"
     ]
    },
    "ifrs-full_SignificantInvestmentsInAssociatesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInAssociatesDomain",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Associates [domain]",
        "terseLabel": "Associates [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Associates' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r172",
      "r576"
     ]
    },
    "ifrs-full_SignificantInvestmentsInSubsidiariesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInSubsidiariesAxis",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsidiaries [axis]",
        "terseLabel": "Subsidiaries [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r170",
      "r574"
     ]
    },
    "ifrs-full_SignificantInvestmentsInSubsidiariesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SignificantInvestmentsInSubsidiariesDomain",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsidiaries [domain]",
        "terseLabel": "Subsidiaries [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Subsidiaries' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r56",
      "r61",
      "r170",
      "r574"
     ]
    },
    "aeg_SignificantUnobservableInputsAssetsMeasuredAtFairValueDescription": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SignificantUnobservableInputsAssetsMeasuredAtFairValueDescription",
     "presentation": [
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Significant unobservable inputs assets measured at fair value description",
        "terseLabel": "Significant unobservable input",
        "documentation": "Significant unobservable inputs assets measured at fair value description."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SocialSecurityContributions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SocialSecurityContributions",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail": {
       "parentTag": "ifrs-full_EmployeeBenefitsExpense",
       "weight": 1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Social security contributions",
        "negatedLabel": "Social security charges"
       }
      }
     },
     "auth_ref": [
      "r920"
     ]
    },
    "aeg_SpainGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SpainGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Spain Government bonds [member]",
        "terseLabel": "Spain government bonds [member]",
        "documentation": "Spain government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SpotRateOfDiscountingLiabilitiesCashFlow": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SpotRateOfDiscountingLiabilitiesCashFlow",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Spot Rate Of Discounting Liabilities Cash Flow",
        "terseLabel": "Spot rate of discounting liabilities cash flow",
        "documentation": "Spot rate of discounting liabilities cashflow."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StandardAndPoorFiveHundredMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StandardAndPoorFiveHundredMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfClosingLevelsOfCertainMajorIndicesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Standard And Poor Five Hundred [member]",
        "terseLabel": "S&amp;P 500 [member]",
        "documentation": "Standard and poor five hundred."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_Statement1LineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Statement1LineItems",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsTables",
      "http://www.aegon.com/role/CommissionsAndExpenses",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedCashFlowStatementOfAegonLtdParenthetical",
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfComprehensiveIncomeOfAegonLtd",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/FinancialRisksTables",
      "http://www.aegon.com/role/FinancingNetInvestmentResultSummaryOfFinancingNetInvestmentResultDetail",
      "http://www.aegon.com/role/FinancingNetInvestmentResultTables",
      "http://www.aegon.com/role/InvestmentIncomeTables",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables",
      "http://www.aegon.com/role/TransfersOfFinancialAssetsTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement1 [Line Items]",
        "terseLabel": "Statement [LineItems]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_StatementGeographicalAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StatementGeographicalAxis",
     "presentation": [
      "http://www.aegon.com/role/AuditorsRemunerationSummaryOfAccountantsRemunerationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail",
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummaryOfOverviewOfSummarizedFinancialInformationToCarryingAmountOfJointVenturesDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfReconciliationFromOperatingResultBeforeTaxToIncomeBeforeTaxParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Geographical [Axis]",
        "documentation": "Information by geographical components."
       }
      }
     },
     "auth_ref": [
      "r388",
      "r389",
      "r390",
      "r391",
      "r400",
      "r401",
      "r402",
      "r403",
      "r404",
      "r405",
      "r406",
      "r407",
      "r408",
      "r409",
      "r410",
      "r411"
     ]
    },
    "ifrs-full_StatementOfCashFlowsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfCashFlowsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of cash flows [abstract]",
        "terseLabel": "Investment contracts with discretionary participating features"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of changes in equity [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityLineItems",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of changes in equity [line items]",
        "terseLabel": "Statement of changes in equity [line items]"
       }
      },
      "en": {
       "role": {
        "documentation": "Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfChangesInEquityTable": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfChangesInEquityTable",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtdParenthetical"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of changes in equity [table]",
        "terseLabel": "Statement of changes in equity [table]"
       }
      },
      "en": {
       "role": {
        "documentation": "Schedule disclosing information related to changes in equity."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "ifrs-full_StatementOfComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfComprehensiveIncomeAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of comprehensive income [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StatementOfComprehensiveIncomeProfitOrLossLocationAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StatementOfComprehensiveIncomeProfitOrLossLocationAxis",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of comprehensive income, profit or loss location [axis]",
        "terseLabel": "Statement of comprehensive income, profit or loss location [axis]",
        "documentation": "Statement of comprehensive income, profit or loss location."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StatementOfComprehensiveIncomeProfitOrLossLocationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StatementOfComprehensiveIncomeProfitOrLossLocationMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansTables",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of comprehensive income, profit or loss location [member]",
        "terseLabel": "Statement of comprehensive income, profit or loss location [member]",
        "documentation": "Statement of comprehensive income, profit or loss location 1."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_StatementOfFinancialPositionAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "StatementOfFinancialPositionAbstract",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesSummarizedFinancialInformationOfJointVenturesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of financial position [abstract]",
        "terseLabel": "Summarized statement of financial position"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StatementOfFinancialPositionLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StatementOfFinancialPositionLineItems",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement Of Financial Position [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StatementOfFinancialPositionTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StatementOfFinancialPositionTable",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement Of Financial Position [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_StatementScenarioAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "StatementScenarioAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scenario [Axis]",
        "documentation": "Information by scenario reported, distinguishing information from actual fact. Includes, but is not limited to, pro forma and forecast. Excludes actual facts."
       }
      }
     },
     "auth_ref": [
      "r414"
     ]
    },
    "aeg_StatutoryCapitalReserveForSolvencyTwoUnitsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StatutoryCapitalReserveForSolvencyTwoUnitsMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statutory Capital Reserve For Solvency Two Units [Member]",
        "documentation": "Statutory Capital Reserve For Solvency Two Units."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_StkPrcOrTsrEstimationMethodTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "StkPrcOrTsrEstimationMethodTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/ErrCompDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Price or TSR Estimation Method [Text Block]",
        "terseLabel": "Stock Price or TSR Estimation Method"
       }
      }
     },
     "auth_ref": [
      "r812",
      "r823",
      "r833",
      "r866"
     ]
    },
    "us-gaap_StockAppreciationRightsSARSMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/us-gaap/2025",
     "localname": "StockAppreciationRightsSARSMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Appreciation Rights (SARs) [Member]",
        "terseLabel": "Stock Appreciation Rights (SARs)"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StockRepurchasedDuringThePeriodValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StockRepurchasedDuringThePeriodValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Repurchased During The Period Value",
        "documentation": "Stock Repurchased During The Period Value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StockRepurchasedDuringThePeriodValueAuthorized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StockRepurchasedDuringThePeriodValueAuthorized",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/EventsAfterTheReportingPeriodAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stock Repurchased During The Period Value Authorized",
        "terseLabel": "Stock repurchased during the period value authorized",
        "documentation": "Stock repurchased during the period value authorized."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_StrategicSaleMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "StrategicSaleMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Strategic Sale [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Subclassifications of assets, liabilities and equities [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SubordinatedBorrowingsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubordinatedBorrowingsMember",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subordinated borrowings [member]",
        "terseLabel": "Subordinated borrowings - held at amortized cost [member]",
        "verboseLabel": "Subordinated borrowings [member]",
        "documentation": "Subordinated borrowings."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SubordinatedBorrowingsYearOfIssue": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubordinatedBorrowingsYearOfIssue",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subordinated Borrowings Year of Issue",
        "terseLabel": "Year of issue",
        "documentation": "Subordinated borrowings year of issue."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SubordinatedBorrowingsYearOfMaturity": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubordinatedBorrowingsYearOfMaturity",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subordinated Borrowings Year of Maturity",
        "terseLabel": "Year of maturity",
        "documentation": "Subordinated borrowings year of maturity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SubordinatedLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SubordinatedLiabilities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_HybridLeverage",
       "weight": 1.0,
       "order": 6.0
      },
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtdAlternate1": {
       "parentTag": "ifrs-full_NoncurrentLiabilities",
       "weight": 1.0,
       "order": 39.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/FiveYearScheduleOfMaturitiesOfDebtDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subordinated liabilities",
        "terseLabel": "Subordinated borrowings",
        "definitionGuidance": "Borrowings and subordinated liabilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of liabilities that are subordinate to other liabilities with respect to claims."
       }
      }
     },
     "auth_ref": [
      "r951"
     ]
    },
    "aeg_SubordinatedLoans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubordinatedLoans",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subordinated Loans",
        "positiveLabel": "Subordinated loans",
        "documentation": "Subordinated loans."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SubordinatedNotesIssued": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubordinatedNotesIssued",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subordinated Notes Issued",
        "terseLabel": "Fixed floating subordinated notes",
        "verboseLabel": "Subordinated notes issued",
        "documentation": "Subordinated notes issued."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SubschemeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubschemeAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subscheme [Axis]",
        "terseLabel": "Subscheme [axis]",
        "documentation": "Subscheme"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SubschemeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SubschemeMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subscheme [Member]",
        "terseLabel": "Subscheme [member]",
        "documentation": "Subscheme"
       }
      }
     },
     "auth_ref": []
    },
    "srt_SubsidiariesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "SubsidiariesMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsidiaries [Member]",
        "terseLabel": "Subsidiaries [member]",
        "documentation": "Entity in which controlling financial interest is held. Includes, but is not limited to, variable interest entity (VIE) consolidated by primary beneficiary. Excludes entity in which broker-dealer holds controlling financial interest but control is likely to be temporary."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummarizedStatementOfComprehensiveIncomeAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummarizedStatementOfComprehensiveIncomeAbstract",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summarized Statement Of Comprehensive Income [Abstract]",
        "terseLabel": "Summarized statement of comprehensive income",
        "documentation": "Summarized statement of comprehensive income."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfAccrualsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfAccrualsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary Of Accruals [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfDetailedInformationAboutHedgedItemsExplanatoryPolicyTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfDetailedInformationAboutHedgedItemsExplanatoryPolicyTextBlock",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary Of Detailed Information About Hedged Items Explanatory [Policy Text Block]",
        "terseLabel": "Summary of Detailed Information About Hedged Items",
        "documentation": "Summary of detailed information about hedged items."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfDetailedInformationAboutHedgingInstrumentsExplanatoryTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfDetailedInformationAboutHedgingInstrumentsExplanatoryTableTextBlock",
     "presentation": [
      "http://www.aegon.com/role/DerivativesTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary Of Detailed Information About Hedging Instruments Explanatory [Table Text Block]",
        "terseLabel": "Summary of Detailed Information about Hedging Instruments",
        "documentation": "Summary of detailed information about hedging instruments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfEquityRealEstateAndOtherNonfixedincomePortfolio": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfEquityRealEstateAndOtherNonfixedincomePortfolio",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary Of Equity Real Estate and Other NonFixedIncome Portfolio",
        "terseLabel": "Summary of Equity Real Estate and Other Non-fixed-income Portfolio",
        "documentation": "The disclosure of equity real estate and other non-fixed-income portfolio."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Issued share capital and reserves attributable to shareholders [abstract]",
        "documentation": "Summary of Issued share capital and reserves attributable to shareholders abstract."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersExplanatory",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of issued share capital and reserves attributable to shareholders [text block]",
        "terseLabel": "Summary of Issued Share Capital and Reserves Attributable to Shareholders",
        "documentation": "Summary of issued share capital and reserves attributable to shareholders."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersLineItems",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of issued share capital and reserves attributable to shareholders [line items]",
        "terseLabel": "Summary of issued share capital and reserves attributable to shareholders [line items]",
        "documentation": "Line items representing issued share capital and reserves attributable to shareholders."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersTable",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Issued share capital and reserves attributable to shareholders [table]",
        "terseLabel": "Summary of Issued share capital and reserves attributable to shareholders [table]",
        "documentation": "Summary of Issued share capital and reserves attributable to shareholders table."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfMarketRiskConcentrationsInSharesLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfMarketRiskConcentrationsInSharesLineItems",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Market Risk Concentrations in Shares [Line Items]",
        "terseLabel": "Summary of market risk concentrations in shares [Line Items]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfMarketRiskConcentrationsInSharesTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfMarketRiskConcentrationsInSharesTable",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Market Risk Concentrations in Shares [Table]",
        "terseLabel": "Summary of market risk concentrations in shares [Table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsExplanatory": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfMaturityAnalysisForLiquidityRiskThatArisesFromContractsExpectedReleaseOfRiskAdjustmentsExplanatory",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksTables"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Maturity Analysis - Insurance and Reinsurance Contracts - Expected release of risk adjustment",
        "terseLabel": "Summary of Maturity Analysis - Insurance and Reinsurance Contracts - Expected Release of Risk Adjustment",
        "documentation": "Summary of maturity analysis for liquidity risk that arises from contracts expected release of risk adjustments."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfOperatingResultPerSegmentLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfOperatingResultPerSegmentLineItems",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of Operating Result Per Segment [Line Items]",
        "terseLabel": "Summary of operating result per segment [Line Items]",
        "documentation": "Summary of operating result per segment."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SummaryOfOperatingResultPerSegmentTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SummaryOfOperatingResultPerSegmentTable",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfSegmentResultsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Summary of operating result per segment [Table]",
        "terseLabel": "Summary of operating result per segment [Table]",
        "documentation": "Summary of operating result per segment [table]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementalPensionAndRetirementPlanMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementalPensionAndRetirementPlanMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplemental pension and retirement plan [member]",
        "terseLabel": "Supplemental pension and retirement plan [member]",
        "documentation": "Supplemental pension and retirement plan."
       }
      }
     },
     "auth_ref": []
    },
    "srt_SupplementaryInsuranceInformationAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "SupplementaryInsuranceInformationAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "SupplementaryInsuranceInformationForInsuranceCompaniesDisclosureTextBlock",
     "presentation": [
      "http://www.aegon.com/role/SupplementaryInsuranceInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block]",
        "terseLabel": "Supplementary insurance information",
        "documentation": "The entire disclosure for supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written."
       }
      }
     },
     "auth_ref": [
      "r392",
      "r393"
     ]
    },
    "aeg_SupplementaryInsuranceInformationInsuranceLiabilityBel": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceLiabilityBel",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Liability BEL",
        "terseLabel": "Insurance liability - BEL",
        "documentation": "Supplementary insurance information insurance liability bel."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationInsuranceLiabilityCsm": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceLiabilityCsm",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Liability CSM",
        "terseLabel": "Insurance liability - CSM",
        "documentation": "Supplementary insurance information insurance liability csm."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationInsuranceLiabilityInsuranceRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceLiabilityInsuranceRevenue",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Liability Insurance Revenue",
        "terseLabel": "Insurance revenue",
        "documentation": "Supplementary insurance information insurance liability insurance revenue"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationInsuranceLiabilityPaaContracts": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceLiabilityPaaContracts",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Liability PAA Contracts",
        "terseLabel": "Insurance liability - PAA contracts",
        "documentation": "Supplementary insurance information insurance liability PAA contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationInsuranceLiabilityRa": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceLiabilityRa",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Liability RA",
        "terseLabel": "Insurance liability - RA",
        "documentation": "Supplementary insurance information insurance liability RA."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationInsuranceRevenue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceRevenue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Revenue",
        "terseLabel": "Insurance revenue",
        "documentation": "Supplementary insurance information insurance revenue."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationInsuranceServiceExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationInsuranceServiceExpenses",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Insurance Service Expenses",
        "terseLabel": "Insurance service expenses",
        "documentation": "Supplementary insurance information insurance service expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationNetInvestmentIncomes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationNetInvestmentIncomes",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Net Investment Incomes",
        "terseLabel": "Investment income",
        "documentation": "Supplementary insurance information net investment incomes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SupplementaryInsuranceInformationOtherOperatingExpenses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SupplementaryInsuranceInformationOtherOperatingExpenses",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleIiiDisclosureOfSupplementaryInsuranceInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplementary Insurance Information Other Operating Expenses",
        "terseLabel": "Other operating expenses",
        "documentation": "Supplementary insurance information other operating expenses."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SurplusCollateral": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SurplusCollateral",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Surplus Collateral",
        "verboseLabel": "Surplus collateral (or overcollateralization)",
        "documentation": "Surplus collateral."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_SurplusDeficitInPlan": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "SurplusDeficitInPlan",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail": {
       "parentTag": null,
       "weight": null,
       "order": null,
       "root": true
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Surplus (deficit) in plan",
        "negatedTotalLabel": "Surplus Deficit In Plan",
        "terseLabel": "Defined benefit plan deficit"
       }
      },
      "en": {
       "role": {
        "documentation": "The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]]"
       }
      }
     },
     "auth_ref": [
      "r919"
     ]
    },
    "aeg_SynetheticAssetCashFlowHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SynetheticAssetCashFlowHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Synethetic Asset Cash flow hedges [Member]",
        "verboseLabel": "Synethetic Asset Cash flow hedges [Member]",
        "documentation": "Synethetic asset cash flow hedges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_SyntheticAssetFairValueHedgesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "SyntheticAssetFairValueHedgesMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Synthetic Asset Fair value hedges [Member]",
        "verboseLabel": "Synthetic Asset Fair value hedges [Member]",
        "documentation": "Synthetic asset fair value hedges."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TRSVivendiHedgeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TRSVivendiHedgeMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "TRS Vivendi Hedge [Member]",
        "verboseLabel": "TRS (Vivendi) Hedge [Member]",
        "documentation": "TRS (Vivendi) hedge."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_TabularListTableTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TabularListTableTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tabular List [Table Text Block]",
        "terseLabel": "Tabular List, Table"
       }
      }
     },
     "auth_ref": [
      "r859"
     ]
    },
    "ifrs-full_TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": -1.0,
       "order": 6.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce deferred tax expense",
        "negatedLabel": "Changes in deferred tax assets"
       }
      }
     },
     "auth_ref": [
      "r682",
      "r768"
     ]
    },
    "aeg_TaxCreditInvestmentsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TaxCreditInvestmentsMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax credit investments [member]",
        "terseLabel": "Tax credit investments [member]",
        "documentation": "Tax credit investment."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxEffectFromChangeInTaxRate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxEffectFromChangeInTaxRate",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 11.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect from change in tax rate",
        "negatedLabel": "Changes in tax rate/base"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to changes in the tax rate. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "aeg_TaxEffectOfAdjustmentsForCurrentAndDeferredTaxOfPriorPeriods": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TaxEffectOfAdjustmentsForCurrentAndDeferredTaxOfPriorPeriods",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 7.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of adjustments for current and deferred tax of prior periods",
        "negatedLabel": "Adjustments to prior years",
        "documentation": "Tax effect of adjustments for current and deferred tax of prior periods."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 12.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail",
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of expense not deductible in determining taxable profit (tax loss)",
        "negatedLabel": "Non-tax-deductible expenses"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining taxable profit (tax loss). [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "ifrs-full_TaxEffectOfForeignTaxRates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxEffectOfForeignTaxRates",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of foreign tax rates",
        "negatedLabel": "Different tax rates on overseas earnings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to foreign tax rates. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "aeg_TaxEffectOfOtherTaxes": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TaxEffectOfOtherTaxes",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 8.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of other taxes",
        "negatedLabel": "Other taxes",
        "documentation": "Tax effect of other taxes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TaxEffectOfProfitLossesFromJointVenturesAndAssociates": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TaxEffectOfProfitLossesFromJointVenturesAndAssociates",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": -1.0,
       "order": 4.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of profit losses from joint ventures and associates",
        "terseLabel": "Tax effect of profit / (losses) from joint ventures and associates",
        "documentation": "Tax effect of (profit) / losses from joint ventures and associates."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TaxEffectOfRevenuesExemptFromTaxation2011": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxEffectOfRevenuesExemptFromTaxation2011",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": -1.0,
       "order": 13.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of revenues exempt from taxation",
        "terseLabel": "Non-taxable income"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to revenues that are exempt from taxation. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "ifrs-full_TaxEffectOfTaxLosses": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxEffectOfTaxLosses",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "aeg_DifferenceDueToEffectsOfIncomeTaxForPeriodIncomeOrChargeWithApplicableTaxRates",
       "weight": 1.0,
       "order": 9.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax effect of tax losses",
        "negatedLabel": "Tax credits"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax losses. [Refer: Accounting profit]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "ifrs-full_TaxExpenseIncomeAtApplicableTaxRate": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TaxExpenseIncomeAtApplicableTaxRate",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail": {
       "parentTag": "ifrs-full_IncomeTaxExpenseContinuingOperations",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfReconciliationBetweenStandardAndEffectiveIncomeTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax expense (income) at applicable tax rate",
        "negatedLabel": "Income tax calculated using weighted average applicable statutory tax rates"
       }
      },
      "en": {
       "role": {
        "documentation": "The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate]"
       }
      }
     },
     "auth_ref": [
      "r5",
      "r459"
     ]
    },
    "aeg_TaxOnIFRSEUIncome": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TaxOnIFRSEUIncome",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IncomeTaxesSummaryOfTheComponentsOfIncomeTaxForPeriodIncomeChargeDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tax on IFRSEU income",
        "negatedLabel": "Tax on result at Dutch corporate result tax rate",
        "documentation": "Tax on IFRS-EU income."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary difference, unused tax losses and unused tax credits [axis]",
        "terseLabel": "Temporary difference, unused tax losses and unused tax credits [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r464"
     ]
    },
    "ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail",
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary difference, unused tax losses and unused tax credits [domain]",
        "terseLabel": "Temporary difference, unused tax losses and unused tax credits [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for temporary differences, unused tax losses and unused tax credits. It also represents the standard value for the 'Temporary difference, unused tax losses and unused tax credits' axis if no other member is used. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r10",
      "r464"
     ]
    },
    "aeg_TemporaryDifferencesDeferredTaxAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TemporaryDifferencesDeferredTaxAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary differences, deferred tax assets",
        "terseLabel": "Deferred tax assets, temporary differences",
        "documentation": "Temporary differences, deferred tax assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TemporaryDifferencesDeferredTaxLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TemporaryDifferencesDeferredTaxLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Temporary differences, deferred tax liabilities",
        "terseLabel": "Deferred tax liabilities, temporary differences",
        "documentation": "Temporary differences, deferred tax liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TenPercentageDecreaseInClaimsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TenPercentageDecreaseInClaimsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ten Percentage Decrease in Claims [Member]",
        "terseLabel": "10% decrease in claims [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TenPercentageDecreaseInMorbidityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TenPercentageDecreaseInMorbidityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ten Percentage Decrease In Morbidity Rates [member]",
        "verboseLabel": "10% decrease in morbidity rates [member]",
        "documentation": "Ten percentage decrease in morbidity rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TenPercentageIncreaseInClaimsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TenPercentageIncreaseInClaimsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ten Percentage Increase in Claims [Member]",
        "terseLabel": "10% increase in claims [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TenPercentageIncreaseInMorbidityRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TenPercentageIncreaseInMorbidityRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ten Percentage Increase In Morbidity Rates [member]",
        "verboseLabel": "10% increase in morbidity rates [member]",
        "documentation": "Ten percentage increase in morbidity rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TenYearUsTreasuryMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TenYearUsTreasuryMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ten -Year US Treasury [member]",
        "terseLabel": "10-year US Treasury [member]",
        "documentation": "Ten - year US treasury."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TenYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TenYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ten Years [Member]",
        "terseLabel": "10 year [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TerminationBenefitsExpense": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TerminationBenefitsExpense",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Termination benefits expense",
        "terseLabel": "Termination benefits expense"
       }
      }
     },
     "auth_ref": [
      "r917"
     ]
    },
    "aeg_Textblock1Abstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "Textblock1Abstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Text block 1 [Abstract]",
        "terseLabel": "Text block [abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ThiirtyYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ThiirtyYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Thiirty Years [Member]",
        "terseLabel": "30 year [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ThirtyYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ThirtyYearsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Thirty Years [Member]",
        "verboseLabel": "30 year [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ThomasWellauerMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ThomasWellauerMember",
     "presentation": [
      "http://www.aegon.com/role/RelatedPartyTransactionsCommonSharesHeldByNonExecutiveDirectorsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Thomas Wellauer [Member]",
        "documentation": "Thomas Wellauer."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ThreeMonthEuriborMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ThreeMonthEuriborMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Three Month (EURIBOR) [member]",
        "terseLabel": "3-month EURIBOR [member]",
        "documentation": "Three month (EURIBOR)."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ThreeMonthTermSofrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ThreeMonthTermSofrMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfInterestRateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Three Month Term SOFR [Member]",
        "terseLabel": "3 month Term SOFR [member]",
        "documentation": "Three Month Term SOFR."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TierThreeRestrictedCapitalAccountedForOwnFunds": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TierThreeRestrictedCapitalAccountedForOwnFunds",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAegonSEstimatedCapitalPositionDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tier Three Restricted Capital Accounted For Own Funds",
        "verboseLabel": "Group Eligible Own Funds",
        "documentation": "Tier three restricted capital accounted for own funds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TierTwoCapitalAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TierTwoCapitalAxis",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tier Two Capital [Axis]",
        "documentation": "Tier Two Capital [Axis]."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TierTwoCapitalDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TierTwoCapitalDomain",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Tier Two Capital [Domain]",
        "documentation": "Tier Two Capital."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TopOfRangeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TopOfRangeMember",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfInformationAboutProbabilityDefaultRateExplanatoryDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsJuniorPerpetualCapitalSecuritiesParentheticalDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfCouponDetailsPerpetualCumulativeSubordinatedBondsParentheticalDetail",
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail",
      "http://www.aegon.com/role/ReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Top of range [member]",
        "terseLabel": "Top of range [member]",
        "verboseLabel": "Top of range [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for top of a range."
       }
      }
     },
     "auth_ref": [
      "r123",
      "r187",
      "r248",
      "r274",
      "r445",
      "r711",
      "r713",
      "r938"
     ]
    },
    "aeg_TotalDeferredCorporateIncomeTaxAssetDependent": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TotalDeferredCorporateIncomeTaxAssetDependent",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredCorporateIncomeTaxAssetDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Deferred Corporate Income Tax Asset Dependent",
        "terseLabel": "On December 31",
        "documentation": "Total deferred corporate income tax asset dependent."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TotalNetInvestmentResult": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TotalNetInvestmentResult",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd": {
       "parentTag": "ifrs-full_RevenueAndOperatingIncome",
       "weight": 1.0,
       "order": 10.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedIncomeStatementOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Net Investment Result",
        "totalLabel": "Total net investment result",
        "documentation": "Total Net Investment Result."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TotalOtherEquityComponentsOne": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TotalOtherEquityComponentsOne",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesScheduleOfFinancialInformationOfAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Other Equity Components One",
        "terseLabel": "Total other equity components",
        "documentation": "Total other equity components one."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_TotalShareholderRtnAmt": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TotalShareholderRtnAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Shareholder Return Amount",
        "terseLabel": "Total Shareholder Return Amount"
       }
      }
     },
     "auth_ref": [
      "r851"
     ]
    },
    "ecd_TotalShareholderRtnVsPeerGroupTextBlock": {
     "xbrltype": "textBlockItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TotalShareholderRtnVsPeerGroupTextBlock",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Shareholder Return Vs Peer Group [Text Block]",
        "terseLabel": "Total Shareholder Return Vs Peer Group"
       }
      }
     },
     "auth_ref": [
      "r858"
     ]
    },
    "aeg_TotalStockRepurchasedDuringThePeriodValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TotalStockRepurchasedDuringThePeriodValue",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Total Stock Repurchased During The Period Value",
        "terseLabel": "Total stock repurchased during the period value.",
        "documentation": "Total stock repurchased during the period value."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradeAndOtherReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TradeAndOtherReceivables",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_Assets",
       "weight": 1.0,
       "order": 50.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade and other receivables",
        "totalLabel": "Receivables"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables]"
       }
      }
     },
     "auth_ref": [
      "r599",
      "r629",
      "r646"
     ]
    },
    "aeg_TradeAndOtherReceivablesDueFromGroupCompanies": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TradeAndOtherReceivablesDueFromGroupCompanies",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd": {
       "parentTag": "ifrs-full_TradeAndOtherReceivables",
       "weight": 1.0,
       "order": 54.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade And Other Receivables Due From Group Companies",
        "terseLabel": "Receivables from group companies",
        "documentation": "Trade and other receivables due from group companies."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TradeReceivables": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TradeReceivables",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesSummaryOfReceivablesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trade receivables",
        "terseLabel": "Trade receivables"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount due from customers for goods and services sold."
       }
      }
     },
     "auth_ref": [
      "r779",
      "r786"
     ]
    },
    "ecd_TradingArrAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TradingArrAxis",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement [Axis]",
        "terseLabel": "Trading Arrangement:"
       }
      }
     },
     "auth_ref": [
      "r879"
     ]
    },
    "ecd_TradingArrByIndTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TradingArrByIndTable",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangements, by Individual [Table]",
        "terseLabel": "Trading Arrangements, by Individual"
       }
      }
     },
     "auth_ref": [
      "r881"
     ]
    },
    "ifrs-full_TradingEquitySecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TradingEquitySecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading equity securities [member]",
        "terseLabel": "Shares [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for equity instruments that (a) are acquired or incurred principally for the purpose of selling or repurchasing it in the near term; or (b) on initial recognition are part of a portfolio of identified financial instruments that are managed together and for which there is evidence of a recent actual pattern of short-term profit-taking."
       }
      }
     },
     "auth_ref": [
      "r709",
      "r712"
     ]
    },
    "dei_TradingSymbol": {
     "xbrltype": "tradingSymbolItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2025",
     "localname": "TradingSymbol",
     "presentation": [
      "http://www.aegon.com/role/CoverPage"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Symbol",
        "documentation": "Trading symbol of an instrument as listed on an exchange."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TraditionalLifeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TraditionalLifeMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Traditional Life [Member]",
        "terseLabel": "Traditional Life [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransamericaCasualtyInsuranceCompanyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransamericaCasualtyInsuranceCompanyMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transamerica Casualty Insurance Company [member]",
        "terseLabel": "Transamerica Casualty Insurance Company [member]",
        "documentation": "Transamerica Casualty Insurance Company."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransamericaCorporationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransamericaCorporationMember",
     "presentation": [
      "http://www.aegon.com/role/CommitmentsAndContingenciesAdditionalInformationDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transamerica Corporation [member]",
        "terseLabel": "Transamerica Corporation [member]",
        "documentation": "Transamerica Corporation."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransamericaFinancialLifeInsuranceCompanyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransamericaFinancialLifeInsuranceCompanyMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transamerica Financial Life Insurance Company [member]",
        "terseLabel": "Transamerica Financial Life Insurance Company [member]",
        "documentation": "Transamerica Financial Life Insurance Company."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransamericaLifeBermudaLtdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransamericaLifeBermudaLtdMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transamerica Life Bermuda Ltd [member]",
        "terseLabel": "Transamerica Life (Bermuda) Ltd [member]",
        "documentation": "Transamerica Life (Bermuda) Ltd."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransamericaLifeInsuranceCompanyMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransamericaLifeInsuranceCompanyMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transamerica Life Insurance Company [member]",
        "terseLabel": "Transamerica Life Insurance Company [member]",
        "documentation": "Transamerica Financial Life Insurance Company."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransamericaMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransamericaMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfActuarialAssumptionsUsedToDetermineDefinedBenefitObligationsParentheticalDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfEstimatedApproximateEffectsOnDefinedBenefitObligationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transamerica [Member]",
        "terseLabel": "Transamerica [member]",
        "documentation": "Transamerica."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransferFromStageOneToStageThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferFromStageOneToStageThreeMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer From Stage One To Stage Three [Member]",
        "terseLabel": "Transfer from Stage 1 to Stage 3 [member]",
        "documentation": "Transfer from stage one to stage three."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransferFromStageOneToStageTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferFromStageOneToStageTwoMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer From Stage One To Stage Two [Member]",
        "terseLabel": "Transfer from Stage 1 to Stage 2 [member]",
        "documentation": "Transfer from stage one to stage two."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransferFromStageThreeToStageOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferFromStageThreeToStageOneMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer From Stage Three To Stage One [Member]",
        "terseLabel": "Transfer from Stage 3 to Stage 1 [member]",
        "documentation": "Transfer from stage three to stage one."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransferFromStageThreeToStageTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferFromStageThreeToStageTwoMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer From Stage Three To Stage Two [Member]",
        "terseLabel": "Transfer from Stage 3 to Stage 2 [member]",
        "documentation": "Transfer from stage three to stage two."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransferFromStageTwoToStageOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferFromStageTwoToStageOneMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer From Stage Two To Stage One [Member]",
        "terseLabel": "Transfer from Stage 2 to Stage 1 [member]",
        "documentation": "Transfer from stage two to stage one."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TransferFromStageTwoToStageThreeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferFromStageTwoToStageThreeMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer From Stage Two to Stage Three [Member]",
        "terseLabel": "Transfer from Stage 2 to Stage 3 [member]",
        "documentation": "Transfer from stage two to stage three."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TransferFromToInventoriesAndOwnerOccupiedPropertyInvestmentProperty": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TransferFromToInventoriesAndOwnerOccupiedPropertyInvestmentProperty",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsSummaryOfInvestmentsInRealEstateDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer from (to) inventories and owner-occupied property, investment property",
        "verboseLabel": "Transfers to other headings"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount transferred from (to) inventories and owner-occupied property to (from) investment property. [Refer: Inventories; Investment property]"
       }
      }
     },
     "auth_ref": [
      "r103",
      "r109",
      "r512",
      "r516"
     ]
    },
    "aeg_TransferOutOfLevel2IntoLevel1OfFairValueHierarchyAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransferOutOfLevel2IntoLevel1OfFairValueHierarchyAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfer Out Of Level 2 Into Level 1 Of Fair Value Hierarchy Assets",
        "terseLabel": "Transfers Level II to Level I",
        "documentation": "Transfer out of level 2 into level 1 of fair value hierarchy assets."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TransfersFromToOtherRetirementBenefitPlans": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TransfersFromToOtherRetirementBenefitPlans",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfExpectedGuaranteedPremiumsAndManagementFeesNetDefinedBenefitLiabilityAssetDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfMovementsOfDefinedBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfers from (to) other retirement benefit plans",
        "terseLabel": "Transfer from AEN"
       }
      },
      "en": {
       "role": {
        "documentation": "The increase (decrease) in net assets available for benefits resulting from transfers from (to) other retirement benefit plans. [Refer: Assets (liabilities) of benefit plan]"
       }
      }
     },
     "auth_ref": [
      "r50"
     ]
    },
    "ifrs-full_TransfersIntoLevel3OfFairValueHierarchyAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TransfersIntoLevel3OfFairValueHierarchyAssets",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfers into Level 3 of fair value hierarchy, assets",
        "terseLabel": "Transfers from levels I and II"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of transfers of assets into Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]"
       }
      }
     },
     "auth_ref": [
      "r182"
     ]
    },
    "ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets",
     "presentation": [
      "http://www.aegon.com/role/FairValueScheduleOfTransfersBetweenLevel1AndLevelIiForFinancialAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period",
        "terseLabel": "Transfers Level I to Level II"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of transfers out of Level 1 and into Level 2 of the fair value hierarchy of assets held at the end of the reporting period. [Refer: Level 1 of fair value hierarchy [member]; Level 2 of fair value hierarchy [member]]"
       }
      }
     },
     "auth_ref": [
      "r177"
     ]
    },
    "ifrs-full_TransfersOutOfLevel3OfFairValueHierarchyAssets": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TransfersOutOfLevel3OfFairValueHierarchyAssets",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transfers out of Level 3 of fair value hierarchy, assets",
        "negatedTerseLabel": "Transfers to levels I and II"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of transfers of assets out of Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]"
       }
      }
     },
     "auth_ref": [
      "r182"
     ]
    },
    "aeg_TransportationMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TransportationMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Transportation [Member]",
        "terseLabel": "Transportation [member]",
        "documentation": "Transportation."
       }
      }
     },
     "auth_ref": []
    },
    "ecd_TrdArrAdoptionDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrAdoptionDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Adoption Date",
        "terseLabel": "Adoption Date"
       }
      }
     },
     "auth_ref": [
      "r882"
     ]
    },
    "ecd_TrdArrDuration": {
     "xbrltype": "durationItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrDuration",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Duration",
        "terseLabel": "Arrangement Duration"
       }
      }
     },
     "auth_ref": [
      "r883"
     ]
    },
    "ecd_TrdArrExpirationDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrExpirationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Expiration Date",
        "terseLabel": "Expiration Date"
       }
      }
     },
     "auth_ref": [
      "r883"
     ]
    },
    "ecd_TrdArrIndName": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrIndName",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Individual Name",
        "terseLabel": "Name"
       }
      }
     },
     "auth_ref": [
      "r881"
     ]
    },
    "ecd_TrdArrIndTitle": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrIndTitle",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Individual Title",
        "terseLabel": "Title"
       }
      }
     },
     "auth_ref": [
      "r881"
     ]
    },
    "ecd_TrdArrSecuritiesAggAvailAmt": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrSecuritiesAggAvailAmt",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement, Securities Aggregate Available Amount",
        "terseLabel": "Aggregate Available"
       }
      }
     },
     "auth_ref": [
      "r884"
     ]
    },
    "ecd_TrdArrTerminationDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "TrdArrTerminationDate",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Arrangement Termination Date",
        "terseLabel": "Termination Date"
       }
      }
     },
     "auth_ref": [
      "r882"
     ]
    },
    "ifrs-full_TreasuryShares": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TreasuryShares",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail": {
       "parentTag": "ifrs-full_RetainedEarnings",
       "weight": -1.0,
       "order": 3.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfIssuedShareCapitalAndReservesAttributableToShareholdersDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Treasury shares",
        "negatedLabel": "Treasury shares"
       }
      },
      "en": {
       "role": {
        "documentation": "An entity\u2019s own equity instruments, held by the entity or other members of the consolidated group."
       }
      }
     },
     "auth_ref": [
      "r63",
      "r780",
      "r787"
     ]
    },
    "ifrs-full_TreasurySharesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TreasurySharesMember",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Treasury shares [member]",
        "terseLabel": "Treasury shares [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the entity\u2019s own equity instruments, held by the entity or other members of the consolidated group."
       }
      }
     },
     "auth_ref": [
      "r613"
     ]
    },
    "aeg_TrustPassThroughSecurities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecurities",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail": {
       "parentTag": "aeg_HybridLeverage",
       "weight": 1.0,
       "order": 5.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyCompositionOfTotalCapitalizationAndCalculationOfGrossFinancialLeverageRatioDetail",
      "http://www.aegon.com/role/ConsolidatedStatementOfFinancialPositionOfAegonLtd",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMaturityAnalysisGrossUndiscountedContractualCashFlowsDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass through securities",
        "terseLabel": "Trust pass-through securities",
        "documentation": "Trust pass-through securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesCouponDate": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesCouponDate",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass-through securities coupon date",
        "terseLabel": "Coupon date",
        "documentation": "Trust pass-through securities coupon date."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesCouponRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesCouponRate",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass-through securities coupon rate",
        "terseLabel": "Coupon rate",
        "documentation": "Trust pass-through securities coupon rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesExtensionPeriodDescription": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesExtensionPeriodDescription",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass through securities, extension period description",
        "terseLabel": "Trust pass-through securities, extension period description",
        "documentation": "Trust pass through securities, extension period description."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesMember",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/FairValueCarryingValuesAndEstimatedFairValuesOfAssetsAndLiabilitiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass through securities [member]",
        "terseLabel": "Trust pass-through securities - held at amortized cost [member]",
        "documentation": "Trust pass through securities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesOneMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesOneMember",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass through securities one [member]",
        "terseLabel": "USD 225 million [member]",
        "documentation": "Trust pass through securities one."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesTwoMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesTwoMember",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesAdditionalInformationDetail",
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass through securities two [member]",
        "terseLabel": "USD 190 million [member]",
        "documentation": "Trust pass through securities two."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesYearOfIssue": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesYearOfIssue",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass-through securities year of issue",
        "terseLabel": "Year of issue",
        "documentation": "Trust pass-through securities year of issue."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TrustPassThroughSecuritiesYearOfMaturity": {
     "xbrltype": "gYearItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TrustPassThroughSecuritiesYearOfMaturity",
     "presentation": [
      "http://www.aegon.com/role/TrustPassThroughSecuritiesSummaryOfTrustPassThroughSecuritiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trust pass-through securities year of maturity",
        "terseLabel": "Year of maturity",
        "documentation": "Trust pass-through securities year of maturity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TwelvemonthExpectedCreditLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TwelvemonthExpectedCreditLossesMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "12-month expected credit losses [member]",
        "terseLabel": "12-month ECL [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the portion of lifetime expected credit losses that represent the expected credit losses that result from default events on a financial instrument that are possible within the 12 months after the reporting date. [Refer: Type of measurement of expected credit losses [domain]; Lifetime expected credit losses [member]]"
       }
      }
     },
     "auth_ref": [
      "r327",
      "r334",
      "r563",
      "r569"
     ]
    },
    "aeg_TwentyDecreaseInLapseRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TwentyDecreaseInLapseRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Twenty Decrease in Lapse Rates [Member]",
        "terseLabel": "20% decrease in lapse rates [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TwentyIncreaseInLapseRatesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TwentyIncreaseInLapseRatesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Twenty Increase in Lapse Rates [Member]",
        "terseLabel": "20% increase in lapse rates [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TwentyYearsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TwentyYearsMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Twenty Years [Member]",
        "terseLabel": "20 year [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TwentyYearsThereafterMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TwentyYearsThereafterMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentsInJointVenturesAndAssociatesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Twenty Years Thereafter [Member]",
        "terseLabel": "20 year thereafter [member]",
        "documentation": "Twenty years thereafter."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypeOfMeasurementOfExpectedCreditLossesAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Type of measurement of expected credit losses [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337",
      "r566",
      "r572"
     ]
    },
    "ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypeOfMeasurementOfExpectedCreditLossesDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfChangesInTheGrossCarryingAmountMarketValueOfTheFinancialAssetsPrivateLoansDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureDebtSecuritiesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfCreditRiskExposureMortgagesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfReconciliationOfChangesInLossAllowanceMortgageLoansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Type of measurement of expected credit losses [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of measurement of expected credit losses. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. This member also represents the standard value for the 'Type of measurement of expected credit losses' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r330",
      "r337",
      "r566",
      "r572"
     ]
    },
    "ifrs-full_TypesOfContractsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfContractsAxis",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of contracts [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r717",
      "r720",
      "r762"
     ]
    },
    "ifrs-full_TypesOfContractsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfContractsDomain",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsCalculatedUsingTheEffectiveInterestMethodDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of contracts [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of contracts with customers. It also represents the standard value for the 'Types of contracts' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r717",
      "r720",
      "r762"
     ]
    },
    "ifrs-full_TypesOfFinancialAssetsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfFinancialAssetsAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of financial assets [axis]",
        "terseLabel": "Types of financial assets [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r352",
      "r353"
     ]
    },
    "ifrs-full_TypesOfFinancialAssetsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfFinancialAssetsDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of financial assets [domain]",
        "terseLabel": "Types of financial assets [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for aggregated types of financial assets. It also represents the standard value for the 'Types of financial assets' axis if no other member is used. [Refer: Financial assets]"
       }
      }
     },
     "auth_ref": [
      "r352",
      "r353"
     ]
    },
    "ifrs-full_TypesOfHedgesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfHedgesAxis",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of hedges [axis]",
        "terseLabel": "Types of hedges [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r308",
      "r316",
      "r319",
      "r551",
      "r557",
      "r560"
     ]
    },
    "ifrs-full_TypesOfHedgesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfHedgesDomain",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesDetail",
      "http://www.aegon.com/role/DerivativesAdditionalInformationDetail",
      "http://www.aegon.com/role/DerivativesDerivativesNotDesignatedInHedgeDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDerivativeAssetAndLiabilityDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgedItemsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfDetailedInformationAboutHedgingInstrumentsDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfGainsLossesOnCashFlowHedgeIneffectivenessDetail",
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInterestIncomeFromInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfInterestRevenueOnFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLossDetail",
      "http://www.aegon.com/role/SegmentInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of hedges [domain]",
        "terseLabel": "Types of hedges [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of hedges. It also represents the standard value for the 'Types of hedges' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r308",
      "r316",
      "r319",
      "r551",
      "r557",
      "r560"
     ]
    },
    "ifrs-full_TypesOfInterestRatesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfInterestRatesAxis",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of interest rates [axis]",
        "terseLabel": "Types of interest rates [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r937"
     ]
    },
    "ifrs-full_TypesOfInterestRatesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfInterestRatesDomain",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfSensitivityAnalysisOfNetIncomeAndShareholdersEquityDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of interest rates [domain]",
        "terseLabel": "Types of interest rates [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of interest rates. It also represents the standard value for the 'Types of interest rates' axis if no other member is used. [Refer: Interest rate risk [member]]"
       }
      }
     },
     "auth_ref": [
      "r937"
     ]
    },
    "aeg_TypesOfInvestmentIncomeAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TypesOfInvestmentIncomeAxis",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types Of Investment Income [Axis]",
        "terseLabel": "Types of investment income [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_TypesOfInvestmentIncomeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "TypesOfInvestmentIncomeMember",
     "presentation": [
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types Of Investment Income [Member]",
        "verboseLabel": "Types of investment income [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_TypesOfInvestmentPropertyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfInvestmentPropertyAxis",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of investment property [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_TypesOfInvestmentPropertyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfInvestmentPropertyDomain",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfOtherInvestmentIncomeExplanatoryDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of investment property [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Types of investment property' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r948"
     ]
    },
    "ifrs-full_TypesOfRateregulatedActivitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfRateregulatedActivitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of rate-regulated activities [axis]",
        "terseLabel": "Types of rate-regulated activities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r186",
      "r188",
      "r587"
     ]
    },
    "ifrs-full_TypesOfRateregulatedActivitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfRateregulatedActivitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEquityRealEstateAndOtherNonFixedIncomePortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of rate-regulated activities [domain]",
        "terseLabel": "Types of rate-regulated activities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an entity\u2019s activities that are subject to rate regulation. It also represents the standard value for the 'Types of rate-regulated activities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r186",
      "r188",
      "r587"
     ]
    },
    "ifrs-full_TypesOfRisksAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfRisksAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of risks [axis]",
        "terseLabel": "Types of risks [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r36",
      "r249",
      "r250",
      "r251",
      "r254",
      "r301",
      "r324",
      "r325",
      "r481"
     ]
    },
    "ifrs-full_TypesOfRisksDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfRisksDomain",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationMortgageLoansDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfMarketRiskConcentrationsInSharesDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfSensitivityAnalysisOfContractualServiceMarginNetIncomeAndShareholdersEquityToEquityMarketsDetail",
      "http://www.aegon.com/role/InvestmentsAdditionalInformationDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfNetIncomeAndShareholdersEquityToChangesInVariousUnderwritingRisksParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of risks [domain]",
        "terseLabel": "Types of risks [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for all types of risks. It also represents the standard value for the 'Types of risks' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r36",
      "r249",
      "r250",
      "r251",
      "r254",
      "r301",
      "r324",
      "r325",
      "r481"
     ]
    },
    "ifrs-full_TypesOfSharebasedPaymentArrangementsAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfSharebasedPaymentArrangementsAxis",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of share-based payment arrangements [axis]",
        "terseLabel": "Types of share-based payment arrangements [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r275",
      "r524"
     ]
    },
    "ifrs-full_TypesOfSharebasedPaymentArrangementsDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "TypesOfSharebasedPaymentArrangementsDomain",
     "presentation": [
      "http://www.aegon.com/role/OtherEquityInstrumentsSummaryOfOtherEquityInstrumentsDetail",
      "http://www.aegon.com/role/OtherEquityInstrumentsTables",
      "http://www.aegon.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://www.aegon.com/role/RelatedPartyTransactionsSummaryOfRemunerationExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Types of share-based payment arrangements [domain]",
        "terseLabel": "Types of share-based payment arrangements [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an agreement between the entity or another group entity or any shareholder of the group entity and another party (including an employee) that entitles the other party to receive (a) cash or other assets of the entity for amounts that are based on the price (or value) of equity instruments (including shares or share options) of the entity or another group entity; or (b) equity instruments (including shares or share options) of the entity or another group entity, provided that the specified vesting conditions, if any, are met. It also represents the standard value for the 'Types of share-based payment arrangements' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r275",
      "r524"
     ]
    },
    "country_US": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/country/2025",
     "localname": "US",
     "presentation": [
      "http://www.aegon.com/role/CapitalManagementAndSolvencyAdditionalInformationDetail",
      "http://www.aegon.com/role/CapitalManagementAndSolvencySummaryOfCapitalRatiosOfAegonSOperatingUnitsDetail",
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "UNITED STATES",
        "terseLabel": "United States [member]"
       }
      }
     },
     "auth_ref": []
    },
    "currency_USD": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/currency/2025",
     "localname": "USD",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfQuantitativeInformationAboutFinancialExposureToCurrencyRiskDetail",
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "United States of America, Dollars",
        "terseLabel": "USD [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_USD760MillionSeniorUnsecuredNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "USD760MillionSeniorUnsecuredNotesMember",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsSummaryOfDetailedCompositionOfCapitalFundingDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "USD 760 Million Senior Unsecured Notes [Member]",
        "documentation": "USD 760 million senior unsecured notes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_USDEightHundredMillionFixedFloatingSubordinatedNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "USDEightHundredMillionFixedFloatingSubordinatedNotesMember",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "U S D Eight Hundred Million Fixed Floating Subordinated Notes [Member]",
        "verboseLabel": "USD 800 million fixed floating subordinated notes [member]",
        "documentation": "USD 800 million non-cumulative subordinated notes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_USDNineHundredAndTwentyFiveMillionFixedSubordinatedNotesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "USDNineHundredAndTwentyFiveMillionFixedSubordinatedNotesMember",
     "presentation": [
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsDetail",
      "http://www.aegon.com/role/SubordinatedBorrowingsSummaryOfSubordinatedBorrowingsParentheticalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "U S D Nine Hundred And Twenty Five Million Fixed Subordinated Notes [Member]",
        "terseLabel": "USD 925 million fixed subordinated notes [member]",
        "documentation": "USD nine hundred and twenty five million fixed subordinated notes."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UltimateForwardRateFromLiquidPoint": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UltimateForwardRateFromLiquidPoint",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ultimate forward rate from liquid point",
        "terseLabel": "Ultimate forward rate",
        "documentation": "Ultimate forward rate from liquid point."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnallocatedGoodwill": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnallocatedGoodwill",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unallocated goodwill",
        "verboseLabel": "Unallocated goodwill"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of goodwill acquired in a business combination that has not been allocated to a cash-generating unit (group of units). [Refer: Goodwill; Total for all cash-generating units [member]; Total for all business combinations [member]]"
       }
      }
     },
     "auth_ref": [
      "r78",
      "r495"
     ]
    },
    "aeg_UnconsolidatedInvestmentFundsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnconsolidatedInvestmentFundsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksScheduleOfMaximumExposureToCreditRiskDetail",
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfFinancialTransactionsResultsDetail",
      "http://www.aegon.com/role/InvestmentsSummaryOfFinancialAssetsExcludingDerivativesDetail",
      "http://www.aegon.com/role/OtherNetInvestmentResultSummaryOfResultsFromFinancialTransactionsDetail",
      "http://www.aegon.com/role/SegmentInformationSummaryOfInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unconsolidated Investment Funds [member]",
        "verboseLabel": "Unconsolidated investment funds [member]",
        "terseLabel": "Unconsolidated investment funds [member]",
        "documentation": "Unconsolidated investment funds."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnconsolidatedStructuredEntitiesAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnconsolidatedStructuredEntitiesAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unconsolidated structured entities [axis]",
        "terseLabel": "Unconsolidated structured entities [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r173",
      "r577"
     ]
    },
    "ifrs-full_UnconsolidatedStructuredEntitiesDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnconsolidatedStructuredEntitiesDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueAnalysisOfAssetsAndLiabilitiesRecordedAtFairValueOnRecurringBasisByLevelOfFairValueHierarchyDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unconsolidated structured entities [domain]",
        "terseLabel": "Unconsolidated structured entities [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for the standard value for the 'Unconsolidated structured entities' axis if no other member is used."
       }
      }
     },
     "auth_ref": [
      "r173",
      "r577"
     ]
    },
    "ifrs-full_UndiscountedExpectedCreditLossesAtInitialRecognitionOnPurchasedOrOriginatedCreditimpairedFinancialAssetsInitiallyRecognised": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UndiscountedExpectedCreditLossesAtInitialRecognitionOnPurchasedOrOriginatedCreditimpairedFinancialAssetsInitiallyRecognised",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Undiscounted expected credit losses at initial recognition on purchased or originated credit-impaired financial assets initially recognised",
        "terseLabel": "Amount of undiscounted expected credit losses at initial recognition"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of undiscounted expected credit losses at initial recognition on financial assets initially recognised during the reporting period as purchased or originated credit-impaired."
       }
      }
     },
     "auth_ref": [
      "r329",
      "r565"
     ]
    },
    "ifrs-full_UndrawnBorrowingFacilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UndrawnBorrowingFacilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/BorrowingsAdditionalInformationDetail",
      "http://www.aegon.com/role/FinancialRisksAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Undrawn borrowing facilities",
        "verboseLabel": "Undrawn committed borrowing facilities",
        "terseLabel": "Undrawn committed borrowing facilities"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]"
       }
      }
     },
     "auth_ref": [
      "r703"
     ]
    },
    "ecd_UndrlygSecurityMktPriceChngPct": {
     "xbrltype": "pureItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "UndrlygSecurityMktPriceChngPct",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Underlying Security Market Price Change, Percent",
        "terseLabel": "Underlying Security Market Price Change"
       }
      }
     },
     "auth_ref": [
      "r878"
     ]
    },
    "aeg_UnfundedDefinedBenefitObligationPresentValue": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnfundedDefinedBenefitObligationPresentValue",
     "crdr": "credit",
     "calculation": {
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail": {
       "parentTag": "ifrs-full_LiabilityAssetOfDefinedBenefitPlans",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfAmountsRecognizedInStatementOfFinancialPositionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unfunded Defined Benefit Obligation Present Value",
        "terseLabel": "Present value of wholly unfunded obligations",
        "documentation": "Unfunded defined benefit obligation present value."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnfundedPostEmploymentBenefitPlansLiabilities": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnfundedPostEmploymentBenefitPlansLiabilities",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unfunded Post Employment Benefit Plans Liabilities",
        "terseLabel": "Unfunded post employment benefit plans liabilities",
        "documentation": "Unfunded post employment benefit plans liabilities."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnitedKingdomGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnitedKingdomGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "United Kingdom Government bonds [member]",
        "terseLabel": "United Kingdom government bonds [member]",
        "documentation": "United Kingdom government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnitedStatesGovernmentBondsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnitedStatesGovernmentBondsMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationGovernmentBondsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "United States Government bonds [member]",
        "terseLabel": "United States government bonds [member]",
        "documentation": "United States government bonds."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UniversalLife1Member": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UniversalLife1Member",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Universal Life 1 [Member]",
        "terseLabel": "Universal Life [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnquotedPlanAssetsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnquotedPlanAssetsMember",
     "presentation": [
      "http://www.aegon.com/role/DefinedBenefitPlansSummaryOfBreakdownOfPlanAssetsForRetirementOfBenefitPlansDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unquoted plan assets [member]",
        "terseLabel": "Unquoted plan assets [member]",
        "documentation": "Unquoted plan assets."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnrealisedGainOnInvestmentAtFairValueThroughProfitOrLoss": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnrealisedGainOnInvestmentAtFairValueThroughProfitOrLoss",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unrealised Gain on Investment at Fair Value Through Profit or Loss",
        "terseLabel": "Unrealised gain on investment at fair value through profit or loss",
        "documentation": "Unrealised gain on investment at fair value through profit or loss."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnrealizedGainsAndLossesOnFinancialAssetsRecordedInProfitAndLossForInstrumentsHeld": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnrealizedGainsAndLossesOnFinancialAssetsRecordedInProfitAndLossForInstrumentsHeld",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/FairValueDisclosuresOfChangesInLevel3AssetsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unrealized gains and losses on financial assets recorded in profit and loss for instruments held",
        "terseLabel": "Total unrealized gains and (losses) for the period recorded in the P&amp;L for instruments held",
        "documentation": "Unrealized gains and losses on financial assets recorded in profit and loss for instruments held."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UnrealizedGainsLossThroughEquity": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnrealizedGainsLossThroughEquity",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unrealized Gains Loss Through Equity",
        "terseLabel": "Unrealized gains loss through equity",
        "documentation": "Unrealized gains loss through equity."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnusedProvisionReversedOtherProvisions": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnusedProvisionReversedOtherProvisions",
     "crdr": "debit",
     "presentation": [
      "http://www.aegon.com/role/ProvisionsSummaryOfProvisionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused provision reversed, other provisions",
        "negatedLabel": "Unused amounts reversed through the income statement"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount reversed for unused other provisions. [Refer: Other provisions]"
       }
      }
     },
     "auth_ref": [
      "r85",
      "r502"
     ]
    },
    "aeg_UnusedTaxCreditsCarryForward": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnusedTaxCreditsCarryForward",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused Tax Credits Carry Forward",
        "terseLabel": "Gross amounts",
        "documentation": "Unused tax credits carry forward."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognised": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognised",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxScheduleOfLossCarryforwardPeriodAndDeferredCorporateIncomeTaxAssetsNotRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused tax credits for which no deferred tax asset recognised",
        "terseLabel": "Not recognized deferred tax asset"
       }
      },
      "en": {
       "role": {
        "documentation": "The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]]"
       }
      }
     },
     "auth_ref": [
      "r7",
      "r461"
     ]
    },
    "ifrs-full_UnusedTaxCreditsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnusedTaxCreditsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused tax credits [member]",
        "terseLabel": "Unused tax credits [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for tax credits that have been received and are carried forward for use against future taxable profit."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r464"
     ]
    },
    "aeg_UnusedTaxLossesAndTaxCreditsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UnusedTaxLossesAndTaxCreditsMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxSummaryOfDeferredTaxDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused Tax Losses And Tax Credits [Member]",
        "terseLabel": "Tax losses and credits carried forward [member]",
        "documentation": "Unused tax losses and tax credits."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_UnusedTaxLossesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "UnusedTaxLossesMember",
     "presentation": [
      "http://www.aegon.com/role/DeferredTaxAdditionalInformationDetail",
      "http://www.aegon.com/role/DeferredTaxScheduleOfNetDeferredTaxAssetsAndLiabilitiesHasBeenRecognizedDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Unused tax losses [member]",
        "terseLabel": "Tax losses and credits carried forward [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for tax losses that have been incurred and are carried forward for use against future taxable profit."
       }
      }
     },
     "auth_ref": [
      "r10",
      "r464"
     ]
    },
    "aeg_UpsideScenarioMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UpsideScenarioMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail",
      "http://www.aegon.com/role/FinancialRisksSummaryOfWeightedAssignedToEachEconomicScenarioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Upside Scenario [Member]",
        "terseLabel": "Upside [member]",
        "documentation": "Upside scenario."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UsGovernmentMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UsGovernmentMember",
     "presentation": [
      "http://www.aegon.com/role/ScheduleISummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "US government [member]",
        "terseLabel": "US government [member]",
        "documentation": "US government."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UsVariableAnnuityProductsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UsVariableAnnuityProductsMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "US Variable Annuity Products [Member]",
        "terseLabel": "US variable annuity products [member]",
        "documentation": "US variable annuity products."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UsdEurMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UsdEurMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "USD EUR [Member]",
        "terseLabel": "USD/EUR [member]",
        "documentation": "USD/EUR."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UsdGbpMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UsdGbpMember",
     "presentation": [
      "http://www.aegon.com/role/DerivativesSummaryOfInformationAboutTermsAndConditionsOfHedgingInstrumentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "USD GBP [Member]",
        "terseLabel": "USD/GBP [member]",
        "documentation": "USD/GBP."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UsefulLivesAndDepreciatedPeriod": {
     "xbrltype": "durationItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UsefulLivesAndDepreciatedPeriod",
     "presentation": [
      "http://www.aegon.com/role/OtherAssetsAndReceivablesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Useful Lives and Depreciated Period",
        "terseLabel": "Useful lives and depreciated period",
        "documentation": "Useful lives and depreciated period."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UsefulLivesOrAmortisationRatesIntangibleAssetOtherThanGoodwill": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UsefulLivesOrAmortisationRatesIntangibleAssetOtherThanGoodwill",
     "presentation": [
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Useful Lives or Amortisation Rates Intangible Asset Other than Goodwill",
        "terseLabel": "Average amortization period",
        "documentation": "Useful lives or amortisation rates intangible asset other than goodwill."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_UtilityMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "UtilityMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfCreditRiskConcentrationDebtSecuritiesAndMoneyMarketInvestmentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Utility [member]",
        "terseLabel": "Utility [member]",
        "documentation": "Utility."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ValuationAllowancesAndReservesOnEclDuringTheYear": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ValuationAllowancesAndReservesOnEclDuringTheYear",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Allowances And Reserves On ECL During The Year",
        "terseLabel": "Impact on year end ECL of exposures transferred between stages during the year",
        "documentation": "Valuation allowances and reserves on ecl during the year."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ValuationAllowancesChangeInModels": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ValuationAllowancesChangeInModels",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Allowances Change In Models",
        "terseLabel": "Change in models",
        "documentation": "Valuation allowances change in models."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ValuationAllowancesFinancialAssetsDerecognized": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ValuationAllowancesFinancialAssetsDerecognized",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Allowances Financial Assets Derecognized",
        "terseLabel": "Financial assets derecognized during the period",
        "documentation": "Valuation allowances financial assets derecognized."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ValuationAllowancesNetExchangeDifference": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ValuationAllowancesNetExchangeDifference",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Allowances Net Exchange Difference",
        "terseLabel": "Net exchange differences",
        "documentation": "Valuation allowances net exchange difference."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ValuationAllowancesNetFinancialAssetsOriginated": {
     "xbrltype": "monetaryItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ValuationAllowancesNetFinancialAssetsOriginated",
     "crdr": "credit",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation Allowances Net Financial Assets Originated",
        "terseLabel": "New financial assets originated or purchased",
        "documentation": "Valuation allowances net financial assets originated."
       }
      }
     },
     "auth_ref": []
    },
    "srt_ValuationAndQualifyingAccountsAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ValuationAndQualifyingAccountsAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "srt_ValuationAndQualifyingAccountsDisclosureLineItems": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ValuationAndQualifyingAccountsDisclosureLineItems",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]",
        "terseLabel": "Disclosure of details of valuation and qualifying accounts [line items]",
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table."
       }
      }
     },
     "auth_ref": [
      "r382",
      "r383",
      "r384",
      "r385",
      "r386"
     ]
    },
    "srt_ValuationAndQualifyingAccountsDisclosureTable": {
     "xbrltype": "stringItemType",
     "nsuri": "http://fasb.org/srt/2025",
     "localname": "ValuationAndQualifyingAccountsDisclosureTable",
     "presentation": [
      "http://www.aegon.com/role/ScheduleVValuationAndQualifyingAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]",
        "terseLabel": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]",
        "documentation": "Disclosure of information about valuation allowance and qualifying account and reserve."
       }
      }
     },
     "auth_ref": [
      "r382",
      "r383",
      "r384",
      "r385",
      "r386"
     ]
    },
    "ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ValuationTechniquesUsedInFairValueMeasurementAxis",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation techniques used in fair value measurement [axis]",
        "terseLabel": "Valuation techniques used in fair value measurement [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r178"
     ]
    },
    "ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "ValuationTechniquesUsedInFairValueMeasurementDomain",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail",
      "http://www.aegon.com/role/FairValueInformationAboutSignificantUnobservableInputsDetail",
      "http://www.aegon.com/role/IntangibleAssetsAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Valuation techniques used in fair value measurement [domain]",
        "terseLabel": "Valuation techniques used in fair value measurement [domain]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for valuation techniques used by the entity to measure fair value. It also represents the standard value for the 'Valuation techniques used in fair value measurement' axis if no other member is used. [Refer: At fair value [member]]"
       }
      }
     },
     "auth_ref": [
      "r178"
     ]
    },
    "aeg_VariableAnnuitiesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "VariableAnnuitiesMember",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfDetailedInformationAboutIlliquidityPremiumPerPortfolioDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Variable Annuities [Member]",
        "terseLabel": "Variable Annuities [member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_VariableFeeApproachAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "VariableFeeApproachAbstract",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfMovementSchedulesByMeasurementComponentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Variable Fee Approach [Abstract]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_VariableFeeApproachMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "VariableFeeApproachMember",
     "presentation": [
      "http://www.aegon.com/role/InsuranceNetInvestmentResultSummaryOfInsuranceNetInvestmentResultDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Variable Fee Approach [Member]",
        "terseLabel": "Variable fee approach [member]",
        "documentation": "Variable fee approach.."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_VariableInterestRates": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "VariableInterestRates",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Variable Interest Rates",
        "terseLabel": "Interest rates",
        "documentation": "Variable interest rates."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_VariableUnemploymentRate": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "VariableUnemploymentRate",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksSummaryOfEconomicVariableAssumptionsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Variable Unemployment Rate",
        "terseLabel": "Unemployment rate",
        "documentation": "Variable unemployment rate."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_VerenigingAegonMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "VerenigingAegonMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail",
      "http://www.aegon.com/role/ShareholdersEquityAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Vereniging Aegon [member]",
        "terseLabel": "Vereniging Aegon [member]",
        "documentation": "Vereniging Aegon."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_ViennaInsuranceGroupAgWienerVersicherungGruppeMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "ViennaInsuranceGroupAgWienerVersicherungGruppeMember",
     "presentation": [
      "http://www.aegon.com/role/CompaniesAndBusinessesAcquiredAndDivestedAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Vienna Insurance Group AG Wiener Versicherung Gruppe [Member]",
        "documentation": "Vienna insurance group AG wiener versicherung gruppe."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_VoluntaryChangesInAccountingPolicyAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "VoluntaryChangesInAccountingPolicyAxis",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Voluntary changes in accounting policy [axis]",
        "terseLabel": "Voluntary changes in accounting policy [axis]"
       }
      },
      "en": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
       }
      }
     },
     "auth_ref": [
      "r130",
      "r452"
     ]
    },
    "ifrs-full_VoluntaryChangesInAccountingPolicyDomain": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "VoluntaryChangesInAccountingPolicyDomain",
     "presentation": [
      "http://www.aegon.com/role/ConsolidatedStatementOfChangesInEquityOfAegonLtd",
      "http://www.aegon.com/role/MaterialAccountingPoliciesInformationAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Voluntary changes in accounting policy [domain]"
       }
      }
     },
     "auth_ref": [
      "r130",
      "r452"
     ]
    },
    "ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]",
        "terseLabel": "Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year"
       }
      }
     },
     "auth_ref": [
      "r847"
     ]
    },
    "ifrs-full_WagesAndSalaries": {
     "xbrltype": "monetaryItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WagesAndSalaries",
     "crdr": "debit",
     "calculation": {
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail": {
       "parentTag": "ifrs-full_EmployeeBenefitsExpense",
       "weight": 1.0,
       "order": 1.0
      }
     },
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfEmployeeExpensesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Wages and salaries",
        "negatedLabel": "Salaries"
       }
      }
     },
     "auth_ref": [
      "r920"
     ]
    },
    "aeg_WeightedAverageInterestRateOnShorttermDeposits": {
     "xbrltype": "percentItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WeightedAverageInterestRateOnShorttermDeposits",
     "presentation": [
      "http://www.aegon.com/role/CashAndCashEquivalentsSummaryOfDetailedInformationAboutCashAndCashEquivalentsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average interest rate on short term deposits",
        "terseLabel": "Weighted effective interest rate on short-term deposits",
        "documentation": "Weighted average interest rate on short-term deposits."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_WeightedAverageMember": {
     "xbrltype": "domainItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageMember",
     "presentation": [
      "http://www.aegon.com/role/FairValueAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average [member]",
        "terseLabel": "Weighted average [member]"
       }
      },
      "en": {
       "role": {
        "documentation": "This member stands for an average in which each quantity to be averaged is assigned a weight that determines the relative effect of each quantity on the average."
       }
      }
     },
     "auth_ref": [
      "r187",
      "r248",
      "r711",
      "r713",
      "r938"
     ]
    },
    "aeg_WeightedAverageNumberOfCommonShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WeightedAverageNumberOfCommonShares",
     "presentation": [
      "http://www.aegon.com/role/ShareholdersEquityDisclosureOfShareCapitalDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number Of Common Shares",
        "terseLabel": "Weighted average number of common shares",
        "documentation": "Weighted Average Number Of Common Shares"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WeightedAverageSharePriceShareOptionsGrantedPerShare": {
     "xbrltype": "perShareItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WeightedAverageSharePriceShareOptionsGrantedPerShare",
     "presentation": [
      "http://www.aegon.com/role/OtherOperatingExpensesSummaryOfCumulativeNumberOfSharesAllocatedOnVariableCompensationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Share Price Share Options Granted Per share",
        "terseLabel": "Average share price used for grant in EUR",
        "documentation": "The weighted average per share price used as input to the option pricing model to calculate the fair value of share options granted."
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_WeightedAverageShares": {
     "xbrltype": "sharesItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "WeightedAverageShares",
     "presentation": [
      "http://www.aegon.com/role/EarningsPerShareSummaryOfBasicEarningsPerShareDetail",
      "http://www.aegon.com/role/ShareholdersEquitySummaryOfShareCapitalParValueDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted average number of ordinary shares outstanding",
        "definitionGuidance": "Weighted average number of common shares outstanding (in million)",
        "verboseLabel": "Weighted average shares"
       }
      },
      "en": {
       "role": {
        "documentation": "The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor."
       }
      }
     },
     "auth_ref": [
      "r67"
     ]
    },
    "aeg_WithDirectParticipatingContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WithDirectParticipatingContractsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "With Direct Participating Contracts [Member]",
        "terseLabel": "Direct Participating Contracts [member]",
        "documentation": "With direct participating contracts member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WithDiscretionaryParticipatingFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WithDiscretionaryParticipatingFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "With Discretionary Participating Features [Member]",
        "terseLabel": "With Discretionary Participating Features [member]",
        "documentation": "With discretionary participating features member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WithDiscretionaryParticipationFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WithDiscretionaryParticipationFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "With Discretionary Participation Features [member]",
        "verboseLabel": "Discretionary Participation Features [member]",
        "documentation": "With discretionary participation features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WithoutDirectParticipatingContractsMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WithoutDirectParticipatingContractsMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfDetailedInformationAboutInsuranceReinsuranceAndInvestmentContractsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Without Direct Participating Contracts [Member]",
        "terseLabel": "Without Direct Participating Contracts [member]",
        "documentation": "Without direct participating contracts."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WithoutDiscretionaryParticipatingFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WithoutDiscretionaryParticipatingFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/SegmentInformationSummaryOfAssetsAndLiabilitiesPerSegmentDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Without Discretionary Participating Features [Member]",
        "terseLabel": "Without Discretionary Participating Features [member]",
        "documentation": "Without discretionary participating features member."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WithoutDiscretionaryParticipationFeaturesMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WithoutDiscretionaryParticipationFeaturesMember",
     "presentation": [
      "http://www.aegon.com/role/InvestmentContractsWithoutDiscretionaryParticipationFeaturesSummaryOfInvestmentContractsForAccountOfGeneralAndSeparateAccountsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Without Discretionary Participation Features [member]",
        "verboseLabel": "Without Discretionary Participation Features [member]",
        "documentation": "Without discretionary participation features."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WorldFinancialGroupHoldingCompanyOfCanadaIncMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WorldFinancialGroupHoldingCompanyOfCanadaIncMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "World Financial Group Holding Company of Canada Inc [Member]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_WorldFinancialGroupInsuranceAgencyLlcMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "WorldFinancialGroupInsuranceAgencyLlcMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "World Financial Group Insurance Agency, LLC [Member]",
        "documentation": "World financial group insurance agency, LLC."
       }
      }
     },
     "auth_ref": []
    },
    "aeg_YieldCurveAxis": {
     "xbrltype": "stringItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "YieldCurveAxis",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Yield Curve [Axis]",
        "terseLabel": "Yield curve [axis]"
       }
      }
     },
     "auth_ref": []
    },
    "aeg_YieldCurveMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "YieldCurveMember",
     "presentation": [
      "http://www.aegon.com/role/FinancialRisksScheduleOfParallelMovementOfYieldCurveDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Yield Curve [Member]",
        "terseLabel": "Yield curve [member]"
       }
      }
     },
     "auth_ref": []
    },
    "ifrs-full_YieldUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItems": {
     "xbrltype": "percentItemType",
     "nsuri": "https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full",
     "localname": "YieldUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItems",
     "presentation": [
      "http://www.aegon.com/role/ReInsuranceContractsAndInvestmentContractsWithDiscretionaryParticipationFeaturesSummaryOfYieldCurveUsedToDiscountCashFlowsThatDoNotVaryBasedOnReturnsOnUnderlyingItemsDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Yield used to discount cash flows that do not vary based on returns on underlying items",
        "terseLabel": "Yield curves"
       }
      },
      "en": {
       "role": {
        "documentation": "The yield used to discount cash flows that do not vary based on the returns on underlying items, applying paragraph 36 of IFRS 17. Underlying items are items that determine some of the amounts payable to a policyholder. Underlying items can comprise any items; for example a reference portfolio of assets, the net assets of the entity, or a specified subset of the net assets of the entity."
       }
      }
     },
     "auth_ref": [
      "r248"
     ]
    },
    "ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://xbrl.sec.gov/ecd/2025",
     "localname": "YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember",
     "presentation": [
      "http://xbrl.sec.gov/ecd/role/PvpDisclosure"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]",
        "terseLabel": "Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested"
       }
      }
     },
     "auth_ref": [
      "r845"
     ]
    },
    "aeg_a.s.r.NederlandN.vMember": {
     "xbrltype": "domainItemType",
     "nsuri": "http://www.aegon.com/20251231",
     "localname": "a.s.r.NederlandN.vMember",
     "presentation": [
      "http://www.aegon.com/role/GroupCompaniesAdditionalInformationAssociatesDetail"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "A.S.R. Nederland N.V [Member]"
       }
      }
     },
     "auth_ref": []
    }
   }
  }
 },
 "std_ref": {
  "r0": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "10",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2025-en-r&anchor=para_21&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r1": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "10",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS10_g17-22_TI",
   "URIDate": "2025-03-27"
  },
  "r2": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_79&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r3": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r4": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "ab",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_ab&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r5": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r6": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r7": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r8": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r9": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r10": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r11": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS12_g79-88_TI",
   "URIDate": "2025-03-27"
  },
  "r12": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r13": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r14": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r15": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r16": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_75_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r17": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r18": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "140",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_140_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r19": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "140",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_140_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r20": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "140",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_140_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r21": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "140",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_140_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r22": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r23": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r24": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r25": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_c_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r26": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r27": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r28": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r29": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r30": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r31": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "145",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r32": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "145",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r33": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Section": "Scope",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS19_g2-7_TI",
   "URIDate": "2025-03-27"
  },
  "r34": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2025-01-01",
   "Paragraph": "52",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2025-en-r&anchor=para_52_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r35": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2025-01-01",
   "Paragraph": "52",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2025-en-r&anchor=para_52_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r36": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "21",
   "IssueDate": "2025-01-01",
   "Paragraph": "A19",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2025-en-r&anchor=para_A19_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r37": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r38": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "19",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_19_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r39": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "19",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_19_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r40": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "19",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_19_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r41": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Paragraph": "19",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_19&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r42": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "24",
   "IssueDate": "2025-01-01",
   "Section": "Disclosures",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS24_g13-24_TI",
   "URIDate": "2025-03-27"
  },
  "r43": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r44": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r45": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r46": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_v&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r47": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_vi&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r48": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r49": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_viii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r50": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "b",
   "Clause": "x",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_b_x&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r51": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "26",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r52": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_10&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r53": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r54": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r55": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r56": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r57": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r58": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r59": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r60": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r61": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r62": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "27",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r63": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "32",
   "IssueDate": "2025-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=32&code=ifrs-tx-2025-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r64": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r65": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_67&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r66": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r67": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r68": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "33",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS33_g70-73A_TI",
   "URIDate": "2025-03-27"
  },
  "r69": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "34",
   "IssueDate": "2025-01-01",
   "Paragraph": "16A",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=34&code=ifrs-tx-2025-en-r&anchor=para_16A_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r70": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "126",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_126_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r71": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "126",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_126_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r72": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "126",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_126&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r73": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "129",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_129_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r74": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "129",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_129_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r75": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "130",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_d_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r76": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "130",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r77": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "130",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_f_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r78": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "133",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_133&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r79": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r80": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "Subparagraph": "e",
   "Clause": "iiA",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_e_iiA&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r81": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "135",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_135_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r82": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r83": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r84": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r85": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r86": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r87": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_86&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r88": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "88",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_88&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r89": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r90": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r91": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r92": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r93": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_122_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r94": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS38_g118-128_TI",
   "URIDate": "2025-03-27"
  },
  "r95": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2025-en-r&anchor=para_86_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r96": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2025-en-r&anchor=para_86_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r97": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "39",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2025-en-r&anchor=para_86_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r98": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "32A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_32A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r99": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r100": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r101": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r102": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r103": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r104": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "76",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r105": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r106": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r107": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r108": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d_vi&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r109": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r110": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r111": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "50",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_50&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r112": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r113": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_55&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r114": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_10&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r115": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "14",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_14&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r116": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r117": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_21&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r118": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "25",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r119": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r120": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r121": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r122": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r123": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44H",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44H_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r124": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r125": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "46",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_46&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r126": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "50",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_50_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r127": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_f_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r128": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r129": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "29",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_29_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r130": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "29",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_29&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r131": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r132": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "49",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&anchor=para_49_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r133": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IAS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Section": "Accounting policies",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=8&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IAS08_g7-31_TI",
   "URIDate": "2025-03-27"
  },
  "r134": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r135": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_24_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r136": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_32_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r137": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_32_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r138": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_IG10&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r139": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "10",
   "IssueDate": "2025-01-01",
   "Paragraph": "22",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=10&code=ifrs-tx-2025-en-r&anchor=para_22&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r140": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "1",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_1&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r141": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "12",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_12_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r142": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "12",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_12_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r143": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "12",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_12_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r144": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "12",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_12_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r145": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "19B",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_19B_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r146": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "19B",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_19B_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r147": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r148": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r149": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r150": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r151": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "21",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r152": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r153": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r154": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_ii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r155": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_iii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r156": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_iv&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r157": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "ix",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_ix&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r158": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_v&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r159": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_vi&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r160": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_vii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r161": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "Subparagraph": "b",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B12_b_viii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r162": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r163": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r164": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_e&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r165": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r166": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r167": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B16",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B16_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r168": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B16",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B16_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r169": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B16",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B16&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r170": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B4",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B4_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r171": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B4",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B4_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r172": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B4",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B4_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r173": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B4",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B4_e&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r174": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Section": "Nature of the risks associated with an entity's interests in consolidated structured entities",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS12_g14-17_TI",
   "URIDate": "2025-03-27"
  },
  "r175": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r176": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r177": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r178": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r179": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r180": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r181": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r182": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r183": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r184": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r185": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS13_g91-99_TI",
   "URIDate": "2025-03-27"
  },
  "r186": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "14",
   "IssueDate": "2025-01-01",
   "Paragraph": "30",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=14&code=ifrs-tx-2025-en-r&anchor=para_30&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r187": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "14",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=14&code=ifrs-tx-2025-en-r&anchor=para_33_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r188": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "14",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=14&code=ifrs-tx-2025-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r189": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_115&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r190": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "120",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_120_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r191": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "47",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r192": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "47",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r193": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r194": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r195": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "Subparagraph": "j",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_j&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r196": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r197": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "94",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_94&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r198": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "97",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_97&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r199": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "100",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_100_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r200": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "100",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_100_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r201": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "100",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_100_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r202": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "100",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_100&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r203": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "101",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_101_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r204": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "101",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_101_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r205": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "101",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_101&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r206": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r207": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r208": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r209": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r210": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_b_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r211": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r212": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r213": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_103&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r214": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r215": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r216": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r217": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r218": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r219": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r220": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r221": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r222": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_104&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r223": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "105",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_105_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r224": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "105",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_105_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r225": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "105",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_105_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r226": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "105",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_105_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r227": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "105",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_105_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r228": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "105",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_105_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r229": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_106_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r230": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_106_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r231": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_106_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r232": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_106_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r233": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_106_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r234": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_106&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r235": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_107_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r236": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_107_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r237": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_107_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r238": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_107_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r239": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_107&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r240": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_108_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r241": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "109",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_109&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r242": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "109A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_109A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r243": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "110",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_110&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r244": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "112",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_112&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r245": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "113",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_113_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r246": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "114",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_114_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r247": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "114",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_114_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r248": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "120",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_120&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r249": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_124&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r250": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "125",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_125&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r251": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "127",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_127&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r252": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_128_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r253": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_128_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r254": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "128",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_128_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r255": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "131",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_131_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r256": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "132",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_132_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r257": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "132",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_132_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r258": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "132",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_132_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r259": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_78_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r260": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_78_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r261": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_78_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r262": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_78_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r263": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_80_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r264": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_80_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r265": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_82&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r266": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "86",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_86&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r267": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "90",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_90&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r268": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "98",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_98&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r269": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "99",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_99_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r270": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "C32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_C32&doctype=Appendix&subtype=C",
   "URIDate": "2025-03-27"
  },
  "r271": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS17_g93-132_TI",
   "URIDate": "2025-03-27"
  },
  "r272": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r273": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r274": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r275": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r276": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r277": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r278": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r279": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r280": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_d_ii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r281": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r282": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r283": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_33_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r284": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_33_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r285": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_33_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r286": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Paragraph": "38",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_38&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r287": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Section": "Presentation and disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS05_g30-42_TI",
   "URIDate": "2025-03-27"
  },
  "r288": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_10_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r289": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "10A",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_10A_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r290": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r291": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r292": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r293": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r294": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r295": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "14",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_14_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r296": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "15",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_15_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r297": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r298": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r299": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "a",
   "Clause": "viii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_a_viii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r300": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r301": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "21C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_21C&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r302": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "23A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_23A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r303": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "23B",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_23B_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r304": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "23B",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_23B_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r305": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24A",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24A_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r306": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24A",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24A_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r307": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24A",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24A_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r308": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r309": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r310": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r311": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r312": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r313": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r314": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r315": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r316": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24B&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r317": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24C",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24C_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r318": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24C",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24C_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r319": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24C&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r320": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24G",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24G_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r321": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24G",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24G&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r322": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "24J",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24J_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r323": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "25",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r324": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r325": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r326": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35G",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35G&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r327": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35H",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r328": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35H",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r329": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35H",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r330": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35H",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r331": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r332": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35K",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35K_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r333": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35K",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35K&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r334": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35M",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35M_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r335": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35M",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35M_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r336": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35M",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35M_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r337": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35M",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35M&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r338": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "36",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_36&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r339": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "42D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_42D&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r340": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "42E",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_42E_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r341": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "42I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_42I&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r342": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_6&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r343": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r344": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_8_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r345": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_8_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r346": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_8_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r347": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_8_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r348": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_8_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r349": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_8&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r350": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "9",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_9_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r351": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11E",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11E&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r352": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B51",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B51&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r353": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B52",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B52&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r354": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B8E",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B8E&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r355": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Credit risk",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS07_g35A-38_TI",
   "URIDate": "2025-03-27"
  },
  "r356": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Defined terms",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&doctype=Appendix&subtype=A&dita_xref=IFRS07_APPA_TI",
   "URIDate": "2025-03-27"
  },
  "r357": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Offsetting financial assets and financial liabilities",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS07_g13A-13F_TI",
   "URIDate": "2025-03-27"
  },
  "r358": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Section": "Scope",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS07_g3-5A_TI",
   "URIDate": "2025-03-27"
  },
  "r359": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r360": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r361": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r362": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r363": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r364": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r365": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r366": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r367": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r368": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r369": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r370": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r371": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r372": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_32&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r373": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_33_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r374": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_33_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r375": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_33&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r376": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r377": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Section": "Disclosure",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&doctype=Standard&dita_xref=IFRS08_g20-24_TI",
   "URIDate": "2025-03-27"
  },
  "r378": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2025-01-01",
   "Paragraph": "6.5.11",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_6.5.11&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r379": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2025-01-01",
   "Paragraph": "7.2.34",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_7.2.34&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r380": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2025-01-01",
   "Paragraph": "7.2.42",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_7.2.42&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r381": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "04",
   "Paragraph": "a",
   "Publisher": "SEC"
  },
  "r382": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "09",
   "Paragraph": "Column B",
   "Publisher": "SEC"
  },
  "r383": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "09",
   "Paragraph": "Column C",
   "Subparagraph": "(1)",
   "Publisher": "SEC"
  },
  "r384": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "09",
   "Paragraph": "Column C",
   "Subparagraph": "(2)",
   "Publisher": "SEC"
  },
  "r385": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "09",
   "Paragraph": "Column D",
   "Publisher": "SEC"
  },
  "r386": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "09",
   "Paragraph": "Column E",
   "Publisher": "SEC"
  },
  "r387": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "09",
   "Publisher": "SEC"
  },
  "r388": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12",
   "Paragraph": "Column C",
   "Footnote": "5",
   "Publisher": "SEC"
  },
  "r389": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12A",
   "Paragraph": "Column C",
   "Footnote": "4",
   "Publisher": "SEC"
  },
  "r390": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12B",
   "Paragraph": "Column C",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r391": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "14",
   "Paragraph": "Column F",
   "Footnote": "7",
   "Publisher": "SEC"
  },
  "r392": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "16",
   "Paragraph": "Column G",
   "Footnote": "3",
   "Publisher": "SEC"
  },
  "r393": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "16",
   "Paragraph": "Column J",
   "Footnote": "3",
   "Publisher": "SEC"
  },
  "r394": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "17",
   "Paragraph": "Column A",
   "Publisher": "SEC"
  },
  "r395": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "17",
   "Paragraph": "Column B",
   "Publisher": "SEC"
  },
  "r396": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "17",
   "Paragraph": "Column C",
   "Publisher": "SEC"
  },
  "r397": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "17",
   "Paragraph": "Column D",
   "Publisher": "SEC"
  },
  "r398": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "17",
   "Paragraph": "Column E",
   "Publisher": "SEC"
  },
  "r399": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "17",
   "Paragraph": "Column F",
   "Publisher": "SEC"
  },
  "r400": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r401": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column B",
   "Publisher": "SEC"
  },
  "r402": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column C",
   "Publisher": "SEC"
  },
  "r403": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column D",
   "Publisher": "SEC"
  },
  "r404": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column E",
   "Publisher": "SEC"
  },
  "r405": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column F",
   "Publisher": "SEC"
  },
  "r406": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column G",
   "Publisher": "SEC"
  },
  "r407": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column H",
   "Publisher": "SEC"
  },
  "r408": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "28",
   "Paragraph": "Column I",
   "Publisher": "SEC"
  },
  "r409": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column A",
   "Footnote": "4",
   "Publisher": "SEC"
  },
  "r410": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column B",
   "Publisher": "SEC"
  },
  "r411": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "29",
   "Paragraph": "Column C",
   "Publisher": "SEC"
  },
  "r412": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "9",
   "Subsection": "06",
   "Publisher": "SEC"
  },
  "r413": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Staff Accounting Bulletin (SAB)",
   "Number": "Topic 11",
   "Section": "L",
   "Publisher": "SEC"
  },
  "r414": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Name": "Staff Accounting Bulletin (SAB)",
   "Number": "Topic 11",
   "Section": "M",
   "Paragraph": "Question 2",
   "Publisher": "SEC"
  },
  "r415": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2026-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "30A",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_30A_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r416": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2026-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "30B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_30B&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r417": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_104&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r418": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_108_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r419": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r420": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r421": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r422": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r423": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r424": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r425": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r426": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "122",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_122_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r427": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r428": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r429": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r430": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "124",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_124&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r431": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "128",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_128&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r432": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "129",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_129&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r433": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "133",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_133_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r434": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "133",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_133_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r435": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r436": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r437": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "141",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r438": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r439": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r440": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r441": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r442": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "160",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r443": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "162",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_162_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r444": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "166",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_166&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r445": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "168",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_168_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r446": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "169",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_169&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r447": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "170",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_170&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r448": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "176",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_176&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r449": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "178",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_178_f_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r450": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "178",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_178&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r451": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "179",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_179_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r452": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "179",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_179&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r453": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "184",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_184&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r454": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "186",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_186_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r455": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "190",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_190&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r456": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "192",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_192&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r457": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r458": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r459": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "c",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_c_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r460": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r461": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r462": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "f",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_f_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r463": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "f",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_f_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r464": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "194",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r465": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r466": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r467": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "200",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r468": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "204",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_204&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r469": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "206",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_206_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r470": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "206",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_206_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r471": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "206",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_206_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r472": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "206",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_206_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r473": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "207",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r474": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "207",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r475": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "207",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r476": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "207",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r477": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "208",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r478": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "208",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r479": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "218",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_218_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r480": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "218",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_218_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r481": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "223",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_223_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r482": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "227",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_227&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r483": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "231",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_231_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r484": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "231",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_231_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r485": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "231",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_231_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r486": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "231",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_231&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r487": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "238",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_238_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r488": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_24_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r489": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "24",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_24_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r490": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "240",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_240_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r491": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "246",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_246_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r492": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "250",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_250_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r493": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "250",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_250_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r494": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "250",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_250&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r495": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "253",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_253&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r496": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "254",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r497": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "254",
   "Subparagraph": "e",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_e_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r498": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "255",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_255_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r499": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r500": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r501": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r502": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r503": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "257",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r504": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "259",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_259&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r505": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "263",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r506": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "263",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r507": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "263",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r508": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "263",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r509": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "264",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_264_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r510": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "269",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_269_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r511": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "269",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_269_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r512": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "269",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_269_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r513": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "269",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_269&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r514": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "271",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_271_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r515": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "271",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_271_d_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r516": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "271",
   "Subparagraph": "d",
   "Clause": "vi",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_271_d_vi&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r517": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "271",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_271_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r518": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "273",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_273&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r519": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "274",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_274_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r520": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_28_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r521": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_28_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r522": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r523": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "Subparagraph": "b",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r524": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "31",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r525": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r526": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r527": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r528": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_37_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r529": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_37&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r530": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "43",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_43&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r531": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r532": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r533": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r534": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r535": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r536": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r537": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r538": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r539": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "44",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_44&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r540": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_45_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r541": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "46",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_46_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r542": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "49",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_49&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r543": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "51",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_51_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r544": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r545": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r546": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "Subparagraph": "a",
   "Clause": "v",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_a_v&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r547": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "Subparagraph": "c",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_56_c_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r548": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "60",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_60_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r549": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "60",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_60_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r550": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "60",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_60_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r551": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "60",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_60&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r552": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r553": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r554": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r555": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r556": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r557": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_61&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r558": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "62",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_62_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r559": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "62",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_62_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r560": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "62",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_62&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r561": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "64A",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_64A_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r562": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "65",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_65&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r563": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r564": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r565": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r566": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r567": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "67",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_67&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r568": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r569": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "71",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_71_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r570": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "71",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_71_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r571": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "71",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_71_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r572": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "71",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_71&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r573": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_73&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r574": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_75_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r575": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_75_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r576": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_75_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r577": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "75",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_75_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r578": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "88",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_88_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r579": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "89",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_89_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r580": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "89",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_89&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r581": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r582": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r583": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r584": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_d_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r585": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95_d_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r586": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "95",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_95&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r587": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "98",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_98&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r588": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r589": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_iii&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r590": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_iv&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r591": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r592": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r593": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B12",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B12&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r594": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B13",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B13&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r595": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B17",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B17_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r596": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B18",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B18_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r597": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B18",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B18_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r598": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B6&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r599": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r600": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_e&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r601": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r602": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expired 2023-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "36",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_c&doctype=Standard&book=b",
   "URIDate": "2025-03-27"
  },
  "r603": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expired 2023-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_37&doctype=Standard&book=b",
   "URIDate": "2025-03-27"
  },
  "r604": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expired 2023-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "8",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_8_c&doctype=Standard&book=b",
   "URIDate": "2025-03-27"
  },
  "r605": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2026-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "11A",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-b&anchor=para_11A_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r606": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2026-01-01",
   "Name": "IFRS",
   "Number": "9",
   "IssueDate": "2025-01-01",
   "Paragraph": "7.2.49",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_7.2.49&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r607": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "104",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_104&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r608": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r609": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r610": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r611": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r612": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r613": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r614": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "107",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_107&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r615": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "117",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_117&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r616": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "134",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_134&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r617": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "136",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_136&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r618": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "137",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_137_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r619": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_138_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r620": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_138_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r621": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r622": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "41",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_41&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r623": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "51",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_51&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r624": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r625": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r626": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r627": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "da",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_da&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r628": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r629": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "h",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_h&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r630": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r631": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "l",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_l&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r632": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "m",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_m&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r633": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "ma",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_ma&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r634": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "n",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_n&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r635": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "o",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_o&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r636": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "q",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_q&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r637": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "r",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_r&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r638": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r639": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "56",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_56&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r640": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_61_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r641": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_61_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r642": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "61",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_61&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r643": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r644": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "69",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_69&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r645": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_7&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r646": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r647": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r648": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r649": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r650": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "iii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_iii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r651": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "Clause": "iv",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_iv&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r652": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r653": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r654": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81A",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81A_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r655": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81A",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81A_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r656": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81A",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81A_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r657": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81B",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81B_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r658": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81B",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81B_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r659": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81B",
   "Subparagraph": "b",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81B_b_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r660": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "81B",
   "Subparagraph": "b",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_81B_b_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r661": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "a",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_a_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r662": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "a",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_a_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r663": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r664": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "ab",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_ab&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r665": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "ac",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_ac&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r666": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "bb",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_bb&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r667": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "bc",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_bc&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r668": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r669": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82",
   "Subparagraph": "ea",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82_ea&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r670": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "90",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_90&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r671": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "91",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_91_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r672": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "91",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_91_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r673": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "91",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_91&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r674": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "92",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_92&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r675": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "98",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_98_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r676": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "98",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_98_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r677": {
   "role": "http://www.xbrl.org/2003/role/disclosureRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "99",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_99&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r678": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r679": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r680": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r681": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r682": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r683": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r684": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r685": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r686": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r687": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r688": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r689": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "147",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_147_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r690": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "36",
   "IssueDate": "2025-01-01",
   "Paragraph": "127",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_127&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r691": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_70&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r692": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "87",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_87&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r693": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Section": "Example 10 A court case",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10_TI",
   "URIDate": "2025-03-27"
  },
  "r694": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "119",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_119_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r695": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "14",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_14_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r696": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_16_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r697": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_16_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r698": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r699": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r700": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r701": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r702": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "44D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_44D&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r703": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "50",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_50_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r704": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG63",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2025-en-r&anchor=para_IG63&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r705": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B10",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r706": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B23",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B23_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r707": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "B23",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_B23_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r708": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r709": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "94",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_94&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r710": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_B11_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r711": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "B6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_B6&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r712": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "IE60",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_IE60&doctype=Illustrative%20Examples",
   "URIDate": "2025-03-27"
  },
  "r713": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "IE63",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_IE63&doctype=Illustrative%20Examples",
   "URIDate": "2025-03-27"
  },
  "r714": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r715": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r716": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r717": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "15",
   "IssueDate": "2025-01-01",
   "Paragraph": "B89",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_B89_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r718": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "53",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r719": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "113",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_113_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r720": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "96",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_96_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r721": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "96",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_96_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r722": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "17",
   "IssueDate": "2025-01-01",
   "Paragraph": "96",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2025-en-r&anchor=para_96_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r723": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "Subparagraph": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r724": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "B64",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r725": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "3",
   "IssueDate": "2025-01-01",
   "Paragraph": "IE72",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_IE72&doctype=Illustrative%20Examples",
   "URIDate": "2025-03-27"
  },
  "r726": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "5",
   "IssueDate": "2025-01-01",
   "Section": "Example 12",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&doctype=Implementation%20Guidance&dita_xref=IFRS05_ex12_TI",
   "URIDate": "2025-03-27"
  },
  "r727": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "d",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_d_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r728": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "13C",
   "Subparagraph": "d",
   "Clause": "ii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_13C_d_ii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r729": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "32",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_32&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r730": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35H",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r731": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35I",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r732": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35I",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r733": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35I",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r734": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35I",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r735": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35M",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35M&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r736": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "35N",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35N&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r737": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_6&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r738": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r739": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r740": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r741": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11_d&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r742": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B11",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B11&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r743": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B33",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B33&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r744": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35_a&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r745": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r746": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35_c&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r747": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35_g&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r748": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "B35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_B35&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r749": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG20B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG20B&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r750": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG20C",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG20C&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r751": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG20D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r752": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG31A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r753": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG40B",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG40B&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r754": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG40D",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_IG40D&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r755": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "23",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r756": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r757": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "28",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r758": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Name": "IFRS",
   "Number": "8",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG4",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_IG4&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r759": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r760": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r761": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r762": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_103_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r763": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "115",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r764": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "193",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_193_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r765": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "193",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_193_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r766": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "193",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_193_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r767": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "193",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_193_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r768": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "193",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_193_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r769": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "208",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r770": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "251",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_251&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r771": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "Subparagraph": "g",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_g&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r772": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "35",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r773": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "66",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r774": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r775": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r776": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r777": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "70",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r778": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "71",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_71&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r779": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_b&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r780": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Effective 2027-01-01",
   "Name": "IFRS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "B9",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_f&doctype=Appendix&subtype=B",
   "URIDate": "2025-03-27"
  },
  "r781": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expired 2023-01-01",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG25",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_IG25&doctype=Implementation%20Guidance&book=b",
   "URIDate": "2025-03-27"
  },
  "r782": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "102",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_102&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r783": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "103",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_103&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r784": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_108&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r785": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "68",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_68&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r786": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r787": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r788": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "82A",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_82A&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r789": {
   "role": "http://www.xbrl.org/2003/role/exampleRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "IG6",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_IG6&doctype=Implementation%20Guidance",
   "URIDate": "2025-03-27"
  },
  "r790": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12"
  },
  "r791": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b"
  },
  "r792": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r793": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r794": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 10-K",
   "Number": "249",
   "Section": "310"
  },
  "r795": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Number": "249",
   "Section": "220",
   "Subsection": "f"
  },
  "r796": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16",
   "Subsection": "J",
   "Paragraph": "a"
  },
  "r797": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K"
  },
  "r798": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r799": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r800": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r801": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r802": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "b",
   "Paragraph": "2"
  },
  "r803": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "1"
  },
  "r804": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2"
  },
  "r805": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "i"
  },
  "r806": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r807": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "16K",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r808": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1"
  },
  "r809": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r810": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "A"
  },
  "r811": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "B"
  },
  "r812": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "C"
  },
  "r813": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "D"
  },
  "r814": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "E"
  },
  "r815": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r816": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r817": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 20-F",
   "Section": "6",
   "Subsection": "F",
   "Paragraph": "2"
  },
  "r818": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Number": "249",
   "Section": "240",
   "Subsection": "f"
  },
  "r819": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a"
  },
  "r820": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1"
  },
  "r821": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "i"
  },
  "r822": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "ii"
  },
  "r823": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iii"
  },
  "r824": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iv"
  },
  "r825": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "v"
  },
  "r826": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "2"
  },
  "r827": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "a",
   "Subparagraph": "3"
  },
  "r828": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form 40-F",
   "Section": "19",
   "Paragraph": "b"
  },
  "r829": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a"
  },
  "r830": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1"
  },
  "r831": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "i"
  },
  "r832": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "ii"
  },
  "r833": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iii"
  },
  "r834": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "iv"
  },
  "r835": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "1",
   "Sentence": "v"
  },
  "r836": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "2"
  },
  "r837": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "a",
   "Subparagraph": "3"
  },
  "r838": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Form N-CSR",
   "Section": "18",
   "Paragraph": "b"
  },
  "r839": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Section": "13",
   "Subsection": "a-1"
  },
  "r840": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v"
  },
  "r841": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "1"
  },
  "r842": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r843": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r844": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Subclause": "ii"
  },
  "r845": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "i"
  },
  "r846": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "ii"
  },
  "r847": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "iii"
  },
  "r848": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "iv"
  },
  "r849": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "v"
  },
  "r850": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1",
   "Subclause": "vi"
  },
  "r851": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iv"
  },
  "r852": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "vi"
  },
  "r853": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "3"
  },
  "r854": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "4"
  },
  "r855": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "i"
  },
  "r856": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "ii"
  },
  "r857": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "iii"
  },
  "r858": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "5",
   "Subparagraph": "iv"
  },
  "r859": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "6"
  },
  "r860": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "6",
   "Subparagraph": "i"
  },
  "r861": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w"
  },
  "r862": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1"
  },
  "r863": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r864": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "A"
  },
  "r865": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "B"
  },
  "r866": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "C"
  },
  "r867": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "D"
  },
  "r868": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "i",
   "Sentence": "E"
  },
  "r869": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r870": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r871": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "w",
   "Paragraph": "2"
  },
  "r872": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "1"
  },
  "r873": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2"
  },
  "r874": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "A"
  },
  "r875": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "C"
  },
  "r876": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "D"
  },
  "r877": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "E"
  },
  "r878": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "402",
   "Subsection": "x",
   "Paragraph": "2",
   "Subparagraph": "ii",
   "Sentence": "F"
  },
  "r879": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a"
  },
  "r880": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "1"
  },
  "r881": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "A"
  },
  "r882": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "B"
  },
  "r883": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "C"
  },
  "r884": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "a",
   "Paragraph": "2",
   "Subparagraph": "D"
  },
  "r885": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Number": "229",
   "Section": "408",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r886": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106"
  },
  "r887": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1"
  },
  "r888": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "i"
  },
  "r889": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "ii"
  },
  "r890": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "1",
   "Subparagraph": "iii"
  },
  "r891": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "b",
   "Paragraph": "2"
  },
  "r892": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "1"
  },
  "r893": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2"
  },
  "r894": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "i"
  },
  "r895": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "ii"
  },
  "r896": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "106",
   "Subsection": "c",
   "Paragraph": "2",
   "Subparagraph": "iii"
  },
  "r897": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Number": "229",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "C",
   "Clause": "1"
  },
  "r898": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "A",
   "Number": "229"
  },
  "r899": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Number": "229"
  },
  "r900": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-K",
   "Section": "402",
   "Subsection": "v",
   "Paragraph": "2",
   "Subparagraph": "iii",
   "Sentence": "B",
   "Clause": "1",
   "Subclause": "i",
   "Number": "229"
  },
  "r901": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Regulation S-T",
   "Number": "232",
   "Section": "405"
  },
  "r902": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Securities Act",
   "Number": "230",
   "Section": "405"
  },
  "r903": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "80",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_80&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r904": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "12",
   "IssueDate": "2025-01-01",
   "Paragraph": "81",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r905": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "37",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_37&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r906": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r907": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "16",
   "IssueDate": "2025-01-01",
   "Paragraph": "73",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r908": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "135",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_135_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r909": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "138",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_138_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r910": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r911": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r912": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r913": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r914": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "142",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r915": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "144",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_144&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r916": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "145",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r917": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "171",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_171&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r918": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "5",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_5&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r919": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "57",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_57_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r920": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "19",
   "IssueDate": "2025-01-01",
   "Paragraph": "9",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_9&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r921": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "37",
   "IssueDate": "2025-01-01",
   "Paragraph": "84",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r922": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r923": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r924": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "Clause": "vii",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e_vii&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r925": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r926": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "118",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r927": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "38",
   "IssueDate": "2025-01-01",
   "Paragraph": "119",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_119&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r928": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "40",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r929": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "41",
   "IssueDate": "2025-01-01",
   "Paragraph": "54",
   "Subparagraph": "f",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=41&code=ifrs-tx-2025-en-r&anchor=para_54_f&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r930": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "16",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_16&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r931": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "17",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r932": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "b",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20_b&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r933": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_20&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r934": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IAS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r935": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "13",
   "IssueDate": "2025-01-01",
   "Paragraph": "93",
   "Subparagraph": "e",
   "Clause": "i",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2025-en-r&anchor=para_93_e_i&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r936": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "2",
   "IssueDate": "2025-01-01",
   "Paragraph": "45",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r937": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "39",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r938": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "IFRS",
   "Number": "7",
   "IssueDate": "2025-01-01",
   "Paragraph": "7",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r939": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "04",
   "Paragraph": "a",
   "Publisher": "SEC"
  },
  "r940": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12",
   "Paragraph": "Column A",
   "Subparagraph": "(ii)",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r941": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12A",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r942": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "12B",
   "Paragraph": "Column A",
   "Subparagraph": "(b)",
   "Footnote": "1",
   "Publisher": "SEC"
  },
  "r943": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Section": "12",
   "Subsection": "14",
   "Paragraph": "Column A",
   "Footnote": "2",
   "Publisher": "SEC"
  },
  "r944": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Name": "Staff Accounting Bulletin (SAB)",
   "Number": "Topic 5",
   "Section": "Y",
   "Paragraph": "Question 2",
   "Publisher": "SEC"
  },
  "r945": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "10",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_10_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r946": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "106",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r947": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "108",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_108&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r948": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "112",
   "Subparagraph": "c",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r949": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "117",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_117&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r950": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "20",
   "Subparagraph": "d",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_20_d&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r951": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "55",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r952": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "Subparagraph": "e",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r953": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "78",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r954": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "79",
   "Subparagraph": "a",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a&doctype=Standard",
   "URIDate": "2025-03-27"
  },
  "r955": {
   "role": "http://www.xbrl.org/2009/role/commonPracticeRef",
   "Note": "Expiry date 2027-01-01",
   "Name": "IAS",
   "Number": "1",
   "IssueDate": "2025-01-01",
   "Paragraph": "85",
   "URI": "https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_85&doctype=Standard",
   "URIDate": "2025-03-27"
  }
 }
}
