v3.26.1
Cover Page
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Trading Symbol AEG
Entity Registrant Name Aegon Ltd.
Entity Central Index Key 0000769218
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
Title of 12(b) Security Common shares
Security Exchange Name NYSE
Document Annual Report true
Document Transition Report false
Entity Voluntary Filers No
Entity Interactive Data Current Yes
Entity Address, Country NL
Document Shell Company Report false
Entity File Number 001-10882
Entity Address, Address Line One World Trade Center Schiphol
Entity Address, Postal Zip Code 1118 BH Schiphol
Entity Address, City or Town Schiphol Boulevard 223
Entity Incorporation, State or Country Code D0
Document Registration Statement false
Document Accounting Standard International Financial Reporting Standards
ICFR Auditor Attestation Flag true
Auditor Name EY Accountants B.V.
Auditor Firm ID 1396
Auditor Location Rotterdam, the Netherlands
Document Financial Statement Error Correction [Flag] false
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Country NL
Entity Address, Address Line One World Trade Center Schiphol
Entity Address, Postal Zip Code 1118 BH Schiphol
Contact Personnel Name Duncan Russell
Contact Personnel Email Address Duncan.Russell@aegon.com
Country Region 31
City Area Code 70
Local Phone Number 3447305
Entity Address, City or Town Schiphol Boulevard 223
Common shares [member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 1,573,119,870
Common share B [member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 335,830,640