Funds entrusted designated and measured at fair value through profit or loss Funds entrusted Funds entrusted [member] Funds entrusted. Supervisory Board members Supervisory Board [Member] This member stands for those members of the related parties who supervisory board members. Disclosure of contingent liabilities [line items] Disclosure of contingent liabilities [line items] Summary of taxation by type Disclosure of income tax benefits expense [text block] Disclosure of income tax benefits expense [text block] – Property and equipment Purchase of property, plant and equipment, classified as investing activities – dividends received from ING Bank N.V. Dividends received, classified as investing activities Salaries Wages and salaries Proportion of ownership interests held by non-controlling interests Proportion of ownership interests held by non-controlling interests Entity File Number Entity File Number Schedule of changes in intangible assets Disclosure of detailed information about intangible assets [text block] Loans and advances to banks Loans and advances to banks 3 Loans and advances to banks Levels of fair value hierarchy [domain] Levels of fair value hierarchy [domain] Schedule of deposits from banks by type Disclosure of deposits from banks split in interest and non-interest bearing explanatory [Table Text Block] Disclosure of deposits from banks split in interest and non-interest bearing explanatory. Net defined benefit liability (asset) [axis] Net defined benefit liability (asset) [axis] Disclosure of Reconciliation Shareholder Equity EU IFRS and IASB IFRS [Abstract] Disclosure of Reconciliation Shareholder Equity EU IFRS and IASB IFRS [Abstract] Disclosure of reconciliation shareholder equity eu ifrs and iasb ifrs [abstract] Designated as at fair value through profit or loss Disclosure of financial instruments designated at fair value through profit or loss [text block] Disclosure Of Other Operating Expense [Table] Disclosure Of Other Operating Expense [Table] Table represents disclosure of other operating expense. – of which revaluations and trading income Revaluations And Trading Income Revaluations And Trading Income Change in fair value of equity instruments at fair value through other comprehensive income Other comprehensive income, net of tax, gains (losses) from investments in equity instruments Sale of assets Sales, fair value measurement, assets Basis of preparation and accounting policies [abstract] Basis of preparation and accounting policies [abstract] Results IFRS-EU IFRS EU Results [Member] Debt securities designated and measured at fair value through profit or loss Financial assets designated at FVPL Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] Securitisation, issued externally Third party securitisation vehicles [member] Third party securitisation vehicles. Intangible assets 10 Opening balance as at 1 January Closing balance Intangible assets and goodwill Statement of comprehensive income [abstract] Statement of comprehensive income [abstract] State and local taxes Tax effect of state and local taxes Tax effect of state and local taxes. Recognition and derecognition of financial instruments Description of accounting policy for recognition and derecognition of financial instruments explanatory [Policy Text Block] The description of accounting policy for recognition and derecognition of financial instruments. Proceeds from debt securities Proceeds from issue of bonds, notes and debentures Breakdown of certain net deferred tax asset positions by jurisdiction Disclosure Of Net Deferred Tax Position [Text Block] Disclosure of net deferred tax position. Summary of other liabilities Disclosure Of Detailed Information About Other Liabilities [Table Text Block] Disclosure of detailed information about other liabilities. Statutory reserve Legal and statutory reserves Statutory reserve Decrease through write-offs and disposals, financial assets Decrease through write-offs and disposals, financial assets Decrease through write-offs and disposals, financial assets – Mandatorily at fair value through profit or loss Mandatorily measured at fair value through profit or loss Financial assets at fair value through profit or loss, mandatorily measured at fair value Increase (decrease) in value in use Sensitivity Analysis, Reasonably Possible Change In Risk Variable, Impact On Value In Use Sensitivity Analysis, Reasonably Possible Change In Risk Variable, Impact On Value In Use Disclosure of credit risk exposure [abstract] Risk management [abstract] Disclosure of country risk exposure [abstract] Accumulated remeasurement Remeasurement [Member] Disclosure of fair value measurement of equity [line items] Disclosure of fair value measurement of equity [line items] Transfers into Level 3 Transfers Into Level 3 Of Fair Value Hierarchy, Net Of Discontinued Operations Netting, Assets Transfers Into Level 3 Of Fair Value Hierarchy, Net Of Discontinued Operations Netting, Assets Schedule of customer deposits Schedule Of Customer Deposits [Table Text Block] The disclosure of schedule of customer deposits. Time deposits Customer Deposits, Time Deposits Customer Deposits, Time Deposits Securities at amortised cost Securities at amortised cost [Member] The member stands for securities at amortised cost. Classes of intangible assets other than goodwill [axis] Classes of intangible assets other than goodwill [axis] – Loans at FVOCI Loans At FVOCI [Member] Loans At FVOCI Builders & Contractors Builders And Contractors [Member] Builders And Contractors [Member] Derivatives And Hedge Accounting [Abstract] Disclosure of risk management strategy related to hedge accounting [abstract] Share premium Share premium Cash flows from financing activities Cash flows from financing activities Cash flows from (used in) financing activities [abstract] Disclosure of significant unobservable inputs used in fair value measurement of assets [table] Disclosure of significant unobservable inputs used in fair value measurement of assets [table] Class actions filed Number Of Class Actions Filed Number Of Class Actions Filed Remeasurement of plan assets Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income Cumulative preference shares Cumulative Preference Shares [member] Cumulative Preference Shares [member] Opening balance before adjustment, cumulative effect at date of initial application Opening balance before adjustment, cumulative effect at date of initial application [member] Other personal lending Personal lending [Member] This member stands for loan loss provisions related to Personal lending. Income received Revenue from rendering of services, related party transactions Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [table] Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [table] Total comprehensive income Total comprehensive income Comprehensive income Disclosure Of Assets By Contractual Maturity Schedule [Line Items] Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] Deferred tax asset Deferred Tax In Connection With Unused Tax Losses Carried Forward Deferred tax in connection with unused tax losses carried forward. Diluted earnings from continuing operations (in EUR per share) Diluted earnings (loss) per share from continuing operations Increase (decrease) in maximum exposure to credit risk Increase (Decrease) In Maximum Exposure To Credit Risk Increase (Decrease) In Maximum Exposure To Credit Risk Summary of information on plan assets and defined benefit obligation per country Disclosure of net defined benefit liability (asset) [text block] Net amounts of financial liabilities presented in the statement of financial position Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position Distributed under staff share plans Increase Through Share-based Payment Transactions, Equity Increase Through Share-based Payment Transactions, Equity Current tax from previously unrecognised amounts Current Tax From Previously Unrecognised Amounts Current Tax From Previously Unrecognised Amounts Pre-settlement Pre-Settlement [Member] Statement of financial position total Financial Liabilities, Statement Of Financial Position Financial Liabilities, Statement Of Financial Position Transfers Transfer to and from Investments other assets and liabilities Transfer to and from Investments other assets and liabilities. Partially covered Partially covered [member] Partially covered. Changes in loan loss provisions and gross carrying amounts Changes in loan loss provisions and gross carrying amounts Explanatory [Table Text Block] Disclosure of changes in loan loss provisions and gross carrying amounts of financial assets. Credit notes held by third parties Credit Notes Held by Third Parties [Member] Credit Notes Held by Third Parties Other trading results Other trading income (expense) Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] Disclosure of transferred financial assets that are not derecognised in their entirety [line items] Disclosure of transferred financial assets that are not derecognised in their entirety [line items] Disclosure of offsetting of financial liabilities [table] Financial assets pledged as collateral [table] Outsourcing and subcontracting Outsourcing and Subcontracting Expense Outsourcing and Subcontracting Expense Taxation Description of accounting policy for income tax [text block] Parent company Parent Company [Member] Korean Won Korea (South), Won Trading Symbol Trading Symbol Irrevocable payment commitments Irrevocable Payment Commitments [Member] Irrevocable Payment Commitments –  Assets mandatorily at fair value through profit or loss Adjustments for decrease (increase) in financial assets at fair value through profit or loss, mandatorily measured at fair value Financial Liabilities designed to be fully neutral in terms of market risk Amount of financial liabilities designed to be fully neutral Amount of financial liabilities designed to be fully neutral. Disclosure Of Other Operating Expense [Line Items] Disclosure Of Other Operating Expense [Line Items] Disclosure Of Other Operating Expense [Line Items] Increase in legal proceedings provision Additional Provisions, Legal Provisions Additional Provisions, Legal Provisions – of which Regulatory costs Regulatory Expenses Regulatory Expenses Equity (equity derivatives, structured notes) Equity Derivatives Structured Notes [Member] Equity (equity derivatives, structured notes). Net amount Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements Financial assets at fair value through other comprehensive income Financial assets at fair value through other comprehensive income [Text Block] The disclosure of financial assets at fair value through other comprehensive income. –  Other trading liabilities Financial Liabilities At Fair Value Through Other Trading Liabilities Financial liabilities at fair value through other trading liabilities. Cumulative effect at date of initial application [axis] Cumulative effect at date of initial application [axis] Corporate bonds Corporate bonds [member] This member represents coproate bonds. Other non-current liabilities Other non-current liabilities Revaluation reserves: financial assets Revaluation reserve: equity securities at FVOCI Revaluation reserve: debt instruments at FVOCI Reserve of gains and losses on financial assets measured at fair value through other comprehensive income Classes of other provisions [domain] Classes of other provisions [domain] Securities at amortised cost Securities at amortised cost The amount of securities at amortised cost. Additions Increase (decrease) through financing cash flows, liabilities arising from financing activities Thai Baht Thailand, Baht Reset spread (%) Reset Spread [Member] Reset spread. Financial instruments Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial assets Legal and statutory reserves Statutory reserve [member] Corporate Corporate Segment [Member] Gross carrying amount per IFRS 9 stage and rating class Gross Carrying amount per IFRS 9 stage and rating class explanatory [Table Text Block] Disclosure of gross carrying amount per IFRS 9 stage and rating class Proceeds from issuance of subordinated loans Proceeds from issue of subordinated liabilities Type Of Swap [Domain] Type Of Swap [Domain] Type Of Swap [Domain] Weighted average statutory tax amount Tax expense (income) at applicable tax rate Securities business Securities Business Fee And Commission Expense Securities business fee and commission expense. 3 to 12 months 3 to 12 months Later than three months and not later than one year [member] Assets Assets [abstract] Unweighted ECL for all collective provisioned clients in baseline scenario Unweighted ECL For All Collective Provisioned Clients In Baseline Scenario Unweighted ECL For All Collective Provisioned Clients In Baseline Scenario – Securities at amortised cost Proceeds from sales or maturity of financial assets measured at amortised cost, classified as investing activities Transfers into Level 3 Transfers into Level 3 of fair value hierarchy, liabilities Net interest income Disclosure of interest income (expense) [text block] Other fee and commission expenses Other fee and commission expense External Credit Grades [Axis] External credit grades [axis] Reclassifications Reclassification Fair Value Measurement Assets Reclassification fair value measurement assets. Liabilities and off-balance sheet commitments by maturity [abstract] Liabilities and off-balance sheet commitments by maturity [abstract] Disclosure of reserves within equity [table] Disclosure of reserves within equity [table] Telecom Telecom [Member] Telecom Document Information [Line Items] Document Information [Line Items] Interest paid bonds Interest Paid Bonds Interest Paid Bonds Investment grade and non-investment grade Investment Grade And Non Investment Grade [Member] Investment Grade And Non Investment Grade Hedges Hedges currency risk [Member] Downside scenario Downside scenario [Member] The downside scenario refers to the adverse scenarios are calibrated to a similar severity to internal stress tests, whilst also considering IFRS 9 specific sensitivities and non-linearity. Retail Germany Retail Germany [member] Retail Germany. Software and other intangible assets Software Computer software [member] Loans and advances to customers, excluding repurchase agreement, subject to offsetting Loans And Advances To Customers, Excluding Repurchase Agreement, Subject To Offsetting Loans And Advances To Customers, Excluding Repurchase Agreement, Subject To Offsetting Ordinary shares ING Ordinary Shares [Member] Credit impairment of financial instruments [axis] Credit impairment of financial instruments [axis] Amounts owed to group companies Current payables to related parties Financial assets with modified contractual cash flows while loss allowance measured at lifetime expected credit losses for which loss allowance changed during reporting period to 12-month expected credit losses, gross carrying amount Financial assets with modified contractual cash flows while loss allowance measured at lifetime expected credit losses for which loss allowance changed during reporting period to 12-month expected credit losses, gross carrying amount In accordance with IFRS-EU (attributable to the shareholders of the parent) Shareholder Equity in Accordance with EU IFRS Shareholder Equity in Accordance with EU IFRS Of which: performing Performing [member] Performing. Reserves within equity [axis] Reserves within equity [axis] Equity securities Equity securities at FVOCI Equity investments [member] Related party transactions [abstract] Related party transactions [abstract] Cash flows from investing activities Cash flows from (used in) investing activities [abstract] Participants contributions Participants contributions Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan by plan participants Dividend declared, per ordinary share (in EUR per share) Proposed cash dividend, per ordinary share (in EUR per share) Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share Types of financial assets [domain] Types of financial assets [domain] Philippine Peso Philippines, Pesos Summary of valuation adjustment Summary of valuation adjustment table [Table Text Block] Summary of valuation adjustment table Macro Economic Scenario [Member] Macro Economic Scenario [Member] Change in fair value of derivatives relating to Change in fair value hedging instruments for the period Gains (losses) on change in fair value of derivatives Reconciliation of number of shares outstanding [abstract] Reconciliation of number of shares outstanding [abstract] Reportable ECL Value at risk Insurance and other broking Insurance And Other Broking Fee And Commission Income Insurance and other broking fee and commission income. Fixed assets Non-current assets Exchange rate differences Exchange rate and other changes Other comprehensive income, net of tax, exchange differences on translation of foreign operations Disclosure of Investments in Associates and Joint Ventures [Table] Disclosure of Investments in Associates and Joint Ventures [Table] Disclosure of Investments in Associates and Joint Ventures [Table] Disclosure of defined benefit plans [table] Disclosure of defined benefit plans [table] Classes of property, plant and equipment [axis] Classes of property, plant and equipment [axis] Type Of Swap [Axis] Type Of Swap [Axis] Type Of Swap Internally generated Internally generated [member] Forebearance Type [Axis] Forebearance Type [Axis] Type of forebearance agreements. Securities business Securities Business Fee And Commission Income Securities business fee and commission income. Less than 1 month Less than 1 month Not later than one month [member] Actuarial assumptions [domain] Actuarial assumptions [domain] Taxation and Exchange rate differences Increase Decrease Through Changes in Taxation Net Defined Benefit Liability Asset Increase decrease through changes in taxation net defined benefit liability asset. Assets by contractual maturity Disclosure Of Assets By Contractual Maturity Explanatory [Text Block] Disclosure Of Assets By Contractual Maturity Explanatory Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Foreign currency translation Description of accounting policy for foreign currency translation [text block] Available Tier 1 capital Tier One Capital Amount Tier one capital amount. Costs expected to be recognised over weighted average period Weighted Average Period Of Unrecognised Compensation Costs Related To Share Awards Weighted average period of unrecognised compensation costs related to share awards. Changes in unrealised revaluations Increase (Decrease) In Unrealised Revaluations, Financial Assets The amount of increase decrease in unrealised revaluations of financial assets. Debt securities in issue Debt instruments issued Disclosure of detailed information about financial instruments [table] Disclosure of detailed information about financial instruments [table] Additional Tier 1 securities Additional Tier One Capital Additional Tier One Capital Negative revaluation Other changes Increase (decrease) through other movements, financial assets Disposals and redemptions: Cash Flows From Investing Activities [Abstract] Cash Flows From Investing Activities Credit liability Reserve of change in fair value of financial liability attributable to change in credit risk of liability [member] Entity Interactive Data Current Entity Interactive Data Current Turkish Lira Turkey, New Lira Remaining financial assets classified as level 3 using valuation techniques Remaining financial assets classified as level 3 Remaining financial assets classified as level 3. Loans and advances outstanding Receivables due from related parties Taxation paid Taxation paid Income taxes paid, classified as operating activities VIU calculation period Value In Use Calculation Period Value In Use Calculation Period ECL from individually assessed impairments Expected credit losses individually assessed [member] Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] Cumulative change in fair value of changes in credit risk Accumulated increase (decrease) in fair value of credit derivatives or similar instruments related to financial assets designated as measured at fair value through profit or loss Offsetting of financial assets and financial liabilities Description of accounting policy for offsetting of financial instruments [text block] Shareholders' equity (parent) Equity attributable to owners of parent [member] Share of associates, joint venture and other reserves including non-distributable profits from associates and joint ventures Share Of Associates, Joint Venture And Other Reserves Including Non-Distributable Profits From Associates and Joint Ventures Share Of Associates, Joint Venture And Other Reserves Including Non-Distributable Profits From Associates and Joint Ventures Individual assets or cash-generating units [domain] Individual assets or cash-generating units [domain] Chemicals, Health & Pharmaceuticals Chemicals, Health & Pharmaceuticals [Member] This member stands for Chemicals, Health & Pharmaceuticals sector. Disclosure of detailed information about hedged items [line items] Disclosure of detailed information about hedged items [line items] Gross amounts of recognised financial liabilities offset in the statement of financial position Gross financial liabilities set off against financial assets subject to offsetting, enforceable master netting arrangements or similar agreements Debt securities by type of exposure Debt Securities By Type Of Exposure [Table Text Block] The summary of debt securities by type and balance sheet lines. Financial assets past due but not impaired Financial assets past due but not impaired [member] Entity Central Index Key Entity Central Index Key Advisory fees Professional fees expense Non-distributable reserves Non Distributable Reserves Non distributable reserves. Unrealised revaluations property in own use Other comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets Voya Financial Inc Voya Financial Inc [ember] Net result attributable to: Profit (loss), attributable to [abstract] Value changes recognised in OCI Gains (losses) on cash flow hedges, before tax Other interest income Interest Income Not Using Effective Interest Method Interest income not using effective interest method. –  Deferred tax assets Deferred Tax Assets [Member] Deferred tax assets. 1 (AAA) Grade One [Member] 1 (AAA). Method of assessment of expected credit losses [axis] Method of assessment of expected credit losses [axis] Chinese Yuan China, Yuan Renminbi FVOCI debt instruments Debt securities and loans and advances [Member] This member stands for debt instruments that includes both debt securities and advances. Derivatives 3 Derivatives Liabilities [member] Derivatives liabilities. Schedule of financial assets received as collateral Schedule Of Financial Assets Received As Collateral Explanatory [Table Text Block] Schedule Of Financial Assets Received As Collateral Explanatory Sensitivity analysis, reasonably possible change in risk variable (in percent) Sensitivity Analysis, Reasonably Possible Change In Risk Variable, Percent Favorable/(Unfavorable) Change In Cash Flows Sensitivity Analysis, Reasonably Possible Change In Risk Variable, Percent Favorable/(Unfavorable) Change In Cash Flows Trading liabilities, funds on deposit Trading liabilities Financial liabilities at fair value through profit or loss that meet definition of held for trading, category [member] Write-off/reversal of deferred tax assets Tax Effect From Write Off Or Reversal Of Deferred Tax Assets Tax effect from write off or reversal of deferred tax assets. Redemptions / Disposals Increase (Decrease) Through Redemptions or Disposals, Liabilities Arising From Financing Activities Increase (Decrease) Through Redemptions or Disposals, Liabilities Arising From Financing Activities Structured entities Disclosure of information about consolidated structured entities [text block] Disclosure of information about consolidated structured entities [abstract] Disclosure of information about consolidated structured entities [abstract] Other Other Bank [Member] Other . Programme [Axis] Programme [Axis] Programme Transfers from Level 1 into Level 2 Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period Transfer to/from retained earnings Changes In Transfer To Or (From) Retained Earnings Changes in transfer to or from retained earnings. Financial assets at fair value through profit or loss Disclosure of Financial assets at fair value through profit or loss [text Block] Disclosure of Financial assets at fair value through profit or loss. Consolidated structured entities [domain] Consolidated structured entities [domain] Supplemental cash flow information Statement of cash flows [abstract] Type of measurement of expected credit losses [axis] Type of measurement of expected credit losses [axis] Summary of financial assets subject to offsetting, enforceable master netting arrangements and similar agreements Disclosure of reconciliation of financial assets subject to offsetting, enforceable master netting arrangements or similar agreements to individual line items in statement of financial position [text block] Adjustments to prior periods Adjustments for current tax of prior periods Geographical Segments Banking Geographical Segments Banking [Member] Geographical segments banking. Interest income on debt securities at amortised cost Interest revenue for financial assets measured at amortised cost Corporate line Corporate Line [member] Corporate Line. Disclosure of finance lease and operating lease by lessor [table] Disclosure of maturity analysis of finance lease payments receivable [table] Transportation & Logistics Transportation & Logistics [member] Transportation & Logistics [member] Summary of deferred tax in connection with unused tax losses carried forward Disclosure Of Deferred Tax In Connection With Unused Tax Losses Carried Forward [text block] Disclosure Of Deferred Tax In Connection With Unused Tax Losses Carried Forward. Condensed Financial Information Disclosure [Abstract] Financial assets received as collateral [Table] Financial assets received as collateral [Table] Net result on derecognition of financial assets measured at amortised cost Gain (loss) arising from derecognition of financial assets measured at amortised cost 2–4 (AA) Grade Two [Member] 2-4 (AA). Other staff costs Other employee expense Payment Services Payment Services Fee And Commission Income Payment Services Fee And Commission Income Percentage decrease in available cash flow Percentage decrease in available cash flow One of the key assumptions to calculate recoverable amount of unimpaired CGUs. Summary of designated as at fair value through profit or loss by type Disclosure of financial derivative instrument liabilities designated at fair through profit or loss explanatory [Table Text Block] Disclosure of financial derivative instrument liabilities designated at fair through profit or loss explanatory. Summary of maturities of debt securities in issue Disclosure of debt securities contractual maturity schedule [Table Text Block] Disclosure of debt securities contractual maturity schedule. Total forebearance type Total forebearance type [Member] Various types of forebearance agreements. Disclosure of offsetting of financial liabilities [line items] Financial assets pledged as collateral [line items] Purchased under Share buyback programme Share buyback programme, amount Purchased under Share buyback programme Share Buyback Programme, Amount Share Buyback Programme, Amount Investments in associates and joint ventures 8 Investments accounted for using equity method Cash and balances with central bank [Table] Cash and balances with central bank [Table] Cash and balances with central bank Changes in cash flow hedge reserve Income tax Income tax relating to cash flow hedges included in other comprehensive income Summary of financial assets at fair value through other comprehensive income Summary of financial assets at fair value through other comprehensive income [Table Text Block] Disclosure of detailed information about financial assets at fair value through other comprehensive income. Investment in Bank of Beijing Investment in Bank of Beijing [member] Investment in Bank of Beijing. Summary of changes in fair value through other comprehensive income financial assets Summary of changes in fair value through other comprehensive income financial assets [Table Text Block] Disclosure of changes in fair value through other comprehensive income financial assets. Total ECL collective assessment for performing assets Total ECL Collective-Assessment For Performing Assets Total ECL Collective-Assessment For Performing Assets Interest income other Miscellaneous interest income The amount interest income generated during the period from other sources. Other post-employment benefits, net Other Post Employment Benefits, Netting [Member] Other post employment benefit. Taxation [abstract] Taxation [abstract] Prepayments Prepayments Contingent Liabilities [Member] Classes of contingent liabilities [domain] Cash and balances with central bank [Line Items] Cash and balances with central bank [Line Items] - Associates and joint ventures Purchase of interests in investments accounted for using equity method Document Shell Company Report Document Shell Company Report Realised gains/losses transferred to the statement of profit or loss Gain (Loss) On Realized Transferred To The Statement Of Profit Or Loss Gain (loss) on realized transferred to the statement of profit or loss. Disclosure of other provisions [line items] Disclosure of other provisions [line items] Employer's contribution Decrease (increase) in net defined benefit liability (asset) resulting from resulting from contributions to plan by employer Realised gains/losses transferred to the statement of profit or loss Gains (losses) recognised in profit or loss excluding exchange differences, fair value measurement, entity's own equity instruments –  Other financial liabilities at fair value through profit or loss Adjustments for increase (decrease) in financial liabilities measured at fair value through profit or loss Subordinated Loans – Subordinated loans Subordinated Loans [Member] Subordinated loans. Total average number of internal employees at full time equivalent basis Average number of employees Net interest income (NII) at risk Disclosure of Net Interest Income (NII) At Risk explanatory [Table Text Block] Disclosure of Net Interest Income (NII) at Risk per business and currency. Schedule of transfer of financial assets not qualifying for derecognition Disclosure of transferred financial assets that are not derecognised in their entirety [text block] Derivatives and hedge accounting Description of accounting policy for derivative financial instruments and hedging [text block] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Staff Expenses [Abstract] Staff Expenses [Abstract] Staff expenses. Carrying amount cash flow hedge reserve at the end of the reporting period Reserve of cash flow hedges, continuing hedges Other changes in treasury shares Increase (decrease) through treasury share transactions, equity Other Increase (decrease) through other changes, liabilities arising from financing activities Types of financial liabilities [axis] Types of financial liabilities [axis] Governments and financial institutions Government And Financial Institutions [Member] Reconciliation shareholders' equity under IFRS-EU and IFRS-IASB Disclosure of reconciliation shareholders equity [Table Text Block] Disclosure of reconciliation shareholders equity [Text Block] Retail Banking Retail Benelux [member] Retail Benelux. Disclosure of maturity analysis for financial assets held for managing liquidity risk [abstract] Disclosure of maturity analysis for financial assets held for managing liquidity risk [abstract] Summary of valuation results and net trading income Disclosure Of Detailed Information About Valuation Results And Net Trading Income [Table Text Block] The disclosure of detailed information about valuation results and net trading income. Cover values including guarantees received Cover risk exposure cover values including guarantees received explanatory [Table Text Block] Country risk exposure cover values including guarantees received explanatory. Percentage of increase (decrease) in portfolio size Percentage of increase (decrease) in portfolio size Percentage of increase (decrease) in portfolio size. Disposals Disposals, intangible assets and goodwill New IFRSs [axis] New IFRSs [axis] Summary of financial liabilities subject to offsetting, enforceable master netting arrangements and similar agreements Disclosure of reconciliation of financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements to individual line items in statement of financial position [text block] - Collective fixed allowances Key management personnel compensation collective fixed allowances Key management personnel compensation collective fixed allowances. Redesignation [axis] Redesignation [axis] Financial assets at fair value through other comprehensive income Financial assets at fair value through other comprehensive income Schedule of subordinated loans by group companies Disclosure of subordinated liabilities [text block] Realised gain/loss recognised in the statement of profit or loss during the period Financial assets, amounts recognized in income statement Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets Total model ECL Total model ECL Total model ECL Chemicals, Health & Pharmaceuticals Chemicals Health and Pharmaceuticals [Member] Chemicals Health and Pharmaceuticals [Member] Disclosure Of Legal Proceedings [Abstract] Legal proceedings [Abstract] Disclosure of legal proceedings. Sale and repurchase, equity Sale And Repurchase Of Equity Securities [Member] Sale and repurchase of equity securities. 2.00% Fixed Subordinated Tier 2 Notes (EUR) 2.00% Fixed Subordinated Tier 2 Notes (EUR) [Member] 2.00% Fixed Subordinated Tier 2 Notes (EUR) Other provisions Other provisions Disclosure of equity [Line Items] Disclosure of reserves within equity [line items] Subsequent events Disclosure of events after reporting period [text block] Investments and advances: Cash Flows Used In Investing Activities [Abstract] Cash Flows Used In Investing Activities Number of employees Number of employees Class Of Level 3 Assets And Liabilities By Type [Domain] Class Of Level 3 Assets And Liabilities By Type [Domain] Class Of Level 3 Assets And Liabilities By Type [Domain] Cash flows from operating activities Cash flows from (used in) operating activities [abstract] External employees External Employee Expense The amount of expenses related to employees hired on contractual basis. Share of result from associates and joint ventures 8 Share of results Share of profit (loss) of associates and joint ventures accounted for using equity method Guarantees Guarantees [member] Document Period End Date Document Period End Date Changes in: Changes In Operating Assets And Liabilities [Abstract] Changes In Operating Assets And Liabilities Non-adjusting events after reporting period [domain] Non-adjusting events after reporting period [domain] Central Banks Central Banks [Member] Central Banks [Member] Hyperinflation impact, one-off CLA payment to staff Hyperinflation Impact, One-Off CLA Payment To Staff Hyperinflation Impact, One-Off CLA Payment To Staff Deposits from banks Deposits From Banks Category [Member] Deposits from banks. Schedule of goodwill allocation to group of CGUs Disclosure of goodwill [text block] Other financing Other inflows (outflows) of cash, classified as financing activities Unemployment Unemployment Economic Core Variable [Member] This member stands for unemployment, a key historic macroeconomic core variable. The unemployment is compared against the forecast paths of the probability weights for each scenario, demonstrating the lowest point in the Upside scenarios; 5 year average in Baseline; highest point in Downside scenarios. – Associates and joint ventures Proceeds from sales of investments accounted for using equity method Change through equity Change through equity Deferred tax relating to items credited (charged) directly to equity Eurozone Eurozone [Member] Eurozone Classes of financial instruments [axis] Classes of financial instruments [axis] Reversals of impairments Reversal of impairment loss recognised in profit or loss Cash and balances with central bank Disclosure of cash and bank balances at central banks [text block] Share-based compensation arrangements Expense from share-based payment transactions with employees Provision for hyperinflationary impact Provision For Hyperinflationary Impact Provision For Hyperinflationary Impact Product and Service [Axis] Product and Service [Axis] Derivative at credit Derivative at credit [member] Derivative at credit. Classes of financial assets [axis] Classes of financial assets [axis] Reserve of cash flow hedges Reserve of cash flow hedges Statistical Measurement [Axis] Statistical Measurement [Axis] Disclosure of discontinued operations [table] Disclosure of analysis of single amount of discontinued operations [table] Unlimited Unlimited [member] Unlimited. Classes of assets [axis] Classes of assets [axis] Revaluation reserve equity securities Revaluation reserve equity securities [member] Revaluation reserve equity securities. Debts issued and borrowings Debt Issued and Borrowings Debt Issued and Borrowings Other positions Other Positions [Member] Other Positions 4 to 5 years More than 4 years but less than 5 years Later than four years and not later than five years [member] Unrealised revaluations of financial assets at fair value through other comprehensive income and other revaluations Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income Earnings per ordinary share 28 Per ordinary share Earnings per share [abstract] Currently stated Currently stated [member] Range [axis] Range [axis] Fixed rate debt securities Fixed interest rate [member] Financial liabilities at fair value through profit or loss Disclosure of financial liabilities [text block] –  Customer deposits Adjustments for increase (decrease) in deposits from customers Significant unobservable inputs, correlation Significant Unobservable Inputs Amount Significant unobservable inputs amount Deposits from customers [abstract] Deposits from customers [abstract] Result before tax Result before tax Result before taxation Profit (loss) before tax Covered bond programme Disclosure Of Covered Bond Programme [Table Text Block] Disclosure Of Covered Bond Programme. Van Lanschot Kempen N.V Van Lanschot Kempen N.V [Member] Van Lanschot Kempen N.V Forborne Forbearance [Member] Africa Africa [Member] Interest rates (Rates derivatives, FX derivatives) Interest Rates Derivatives Foreign Exchange Derivatives [Member] Interest rates (Rates derivatives, FX derivatives). ING Bank consumer lending portfolio, outstandings ING Bank consumer lending portfolio, outstandings [member] ING Bank consumer lending portfolio, outstandings Presentation of Risk management disclosures Presentation Of Risk Management Disclosures Explanatory [Policy Text Block] Presentation Of Risk Management Disclosures Explanatory Equity Disclosure of share capital, reserves and other equity interest [text block] Percentage of financial assets Percentage Of Financial Assets Percentage Of Financial Assets Countercyclical Buffer Countercyclical Buffer [member] Countercyclical Buffer [member] Implied volatility (%) Implied volatility (%) [member] Other industries Other Industries [Member] Other Industries Statement of cash flows Description of accounting policy for cash flows [text block] Expenses paid Services expense Disclosure of other provisions [table] Disclosure of other provisions [table] Classes of financial instruments [domain] Classes of financial instruments [domain] Exchange rate differences Exchange Rate Differences Fair Value Measurement Assets Exchange rate differences fair value measurement assets. Maximum exposure to loss from interests in structured entities Maximum exposure to loss from interests in structured entities Average number of employees at full time equivalent basis Average Number Of Employees On Full Time Equivalent Basis Average number of employees on full time equivalent basis. Changes in the composition of the group and other changes Increase (decrease) through business combinations, deferred tax liability (asset) Financial Collateral Eligible Financial Collateral [Member] This memeber stands for Eligible Financial Collateral asset. Interest received Interest received, classified as operating activities Increase of value at risk Increase (Decrease) of Value At Risk Increase (Decrease) of Value At Risk Items that will not be reclassified to the statement of profit or loss: Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] Other Post Model Adjustments Other Post Model Adjustments Other Post Model Adjustments, Management Adjustments Disclosure Of Income Taxes [Table] Disclosure Of Income Taxes [Table] Disclosure of income taxes. Products and services [domain] Products and services [domain] Schedule of ING Group total Disclosure of operating segments [text block] Retail Other Retail Other [Member] Retail Other [Member] Market data services Market Data Services Expense Market Data Services Expense Realised revaluations transferred to retained earnings Increase (decrease) through transfer between revaluation surplus and retained earnings, equity Not rated Assets Not Rated [member] Assets Not Rated [member] Summary of changes in deferred tax Disclosure of temporary difference, unused tax losses and unused tax credits [text block] Goodwill impairment Impairment loss recognised in profit or loss, goodwill –  Guarantees Contingent liability for guarantees [member] Disclosure of detailed information about intangible assets [table] Disclosure of detailed information about intangible assets [table] Other reserves Other reserves Opening balance Closing balance Opening balance Closing balance Other reserves Unissued share capital, amount Unissued shares value Unissued shares value. Borrowings Borrowings Disclosure of information about consolidated structured entities [line items] Disclosure of information about consolidated structured entities [line items] – Non-trading derivatives Non-trading derivatives Financial assets at fair value through profit or loss, mandatorily measured at fair value, other than those classified as held for trading Loans Loan commitments [member] Share capital and share premium Share Capital and Share Premium [abstract] Share Capital and Share Premium [abstract] Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] Increase (decrease) through changes in models or risk parameters, financial assets Changes in models/risk parameters Increase (decrease) through changes in models or risk parameters, financial assets Purchased credit impaired Financial instruments purchased or originated credit-impaired [member] Mortgage portfolio adjustments Mortgage Portfolio Adjustments Mortgage Portfolio Adjustments Net cash flow from/(used in) financing activities Cash flows from (used in) financing activities Change in value of hedging instrument recognised in OCI for the period Change In Value Of Hedging Instrument Recognised In OCI Change In Value Of Hedging Instrument Recognised In OCI Counterparties [axis] Counterparties [axis] Earnings per ordinary share Description of accounting policy for earnings per share [text block] Other changes Increase (decrease) through transfers and other changes, intangible assets and goodwill Non-interest bearing Non interest bearing customer deposits Non interest bearing customer deposits. Markets of customers [domain] Markets of customers [domain] Accumulated depreciation, amortisation and impairment Accumulated depreciation, amortisation and impairment [member] Asia Asia [Member] Plan assets Plan assets, at fair value Education Education Expense The amount of expenses related to employee training and education. Treasury shares Opening balance Closing balance Treasury shares Decrease In Cash Flows Decrease In Cash Flows [Member] Decrease In Cash Flows Statement [Table] Statement of changes in equity [table] Actuarial assumptions [axis] Actuarial assumptions [axis] American Depositary Shares American Depository Shares [Member] American Depository Shares Transitional (phased-in) common equity Tier 1 required Transitional Common Equity Tier One Capital Required Percentage Transitional Common Equity Tier One Capital Required Percentage Cash and bank balances Bank balances at central banks other than mandatory reserve deposits Consumer lending Consumer Lending [Member] Classes of assets [domain] Classes of assets [domain] Unrealised Revaluations And Exchange Rate Differences Unrealised Revaluations And Exchange Rate Differences [Member] Unrealised Revaluations And Exchange Rate Differences Disclosure of deposits from banks [Line Items] Disclosure of deposits from banks [Line Items] Disclosure of deposits from banks [Line Items] – Property and equipment Proceeds from sales of property, plant and equipment, classified as investing activities Increased dividend percentage Increase Dividend As Percentage Increase dividend as percentage. Types of hedges [domain] Types of hedges [domain] Realised gains/losses transferred to the statement of profit or loss (reclassifications from equity to profit or loss) Income Tax Relating To Realised Gains Losses Transferred To Statement Of Profit Or Loss Income tax relating to realised gains losses transferred to statement of profit or loss. Other Valuation Adjustments Other Valuation Adjustments [Member] Other Valuation Adjustments Minimum Bottom of range [member] 17 (CCC) CCC Credit Grades [Member] CCC Credit Grades. –  Assets designated at fair value through profit or loss Adjustments for decrease (increase) in financial assets at fair value through profit or loss, designated upon initial recognition or subsequently Categories of related parties [axis] Categories of related parties [axis] DVA DVA [Member] Disclosure of other assets [abstract] Other assets [abstract] Other assets Other assets including current and deferred tax assets Other assets including current and deferred tax assets. 2026 Expected Credit Losses Sensitivity Year One Sensitivity of expected credit losses by macroeconomic scenario in year one. Net result Net result Net results Profit (loss) Changes in cash flow hedge reserve Other comprehensive income, net of tax, cash flow hedges Carrying Amount Carrying amount1 [Member] Non-current liabilities Non-current liabilities ING Financial Holdings Corporation ING Financial Holdings Corporation [Member] ING Financial Holdings Corporation. 7.00% Perpetual AT1 Contingent Convertible Capital Securities (USD) 7.00% Perpetual AT1 Contingent Convertible Capital Securities (USD) [Member] 7.00% Perpetual AT1 Contingent Convertible Capital Securities (USD) Deposits from banks excluding repurchase agreements subject to offsetting Deposits From Banks Excluding Repurchase Agreements Subject To Offsetting Deposits from banks excluding repurchase agreements subject to offsetting Document Registration Statement Document Registration Statement Other Other Banking, Netting [Member] Other banking. Com/FX correlation Commodity And Foreign Exchange Correlation [Member] Commodity And Foreign Exchange Correlation Segments Disclosure of entity's operating segments [text block] Dividends per ordinary share (in EUR per share) Dividends recognised as distributions to owners per share TMB Public Company Limited Total for all associates Total for all associates [member] Summary of other operating expenses Disclosure of schedule of other operating expense [Table Text Block] Disclosure of schedule of other operating expense. 2.727% Callable Fixed-to-Floating Rate Senior Notes due 2032 2.727% Callable Fixed-to-Floating Rate Senior Notes due 2032 [Member] Investment income 23 Investment income Investment income Disclosure of contingent liabilities [table] Disclosure of contingent liabilities [table] Defined benefit obligation Present value of defined benefit obligation [member] ING Group as lessor Description of accounting policy for leases [text block] Loans and advances to customers [abstract] Loans and advances to customers [abstract] Reclassification adjustments on exchange differences on translation of foreign operations, net of tax Reclassification adjustments on exchange differences on translation of foreign operations, net of tax Increase due to foreign currency ratio hedging Increase (Decrease) of Revenue Due to Foreign Currency Ratio Hedging Increase (Decrease) of Revenue Due to Foreign Currency Ratio Hedging Analysis of income and expense [abstract] Fee and commission income Fee and commission income [abstract] Share capital and share premium Total share capital and share premium Share capital and share premium Share capital and share premium. Business Contact Business Contact [Member] British Pound United Kingdom, Pounds –  Irrevocable letters of credit Contingent Liability For Irrevocable Letters Of Credit [Member] Contingent liability for irrevocable letters of credit. Liabilities Liabilities [abstract] Bonds issued Bonds issued Unweighted ECL for all collective provisioned clients in down scenario Unweighted ECL For All Collective Provisioned Clients In Down Scenario Unweighted ECL For All Collective Provisioned Clients In Down Scenario Foreign exchange rate changes, negative impact on portfolio growth amount Foreign Exchange Rate Changes, Negative Impact On Portfolio Growth Amount Foreign Exchange Rate Changes, Negative Impact On Portfolio Growth Amount Disposals Disposals Of Investments In Associates And Joint Ventures Disclosure of deposits from banks [table] Disclosure of deposits from banks [table] Schedule disclosing information related to depostis from bank financing activities. Carrying Amount Carrying amount [member] - Other emoluments Key management personnel compensation, other variable compensation Key management personnel compensation, other variable compensation. Hedged item, liabilities Hedged item, liabilities Fee and commission income (expense) [abstract] Fee and commission income (expense) [abstract] –  Base salary Key management personnel compensation, short-term employee benefits Security Exchange Name Security Exchange Name Carrying value Investments in equity instruments designated at fair value through other comprehensive income Equity securities at FVOCI Equity securities at fair value through other comprehensive income [Member] Equity securities at fair value through other comprehensive income. Other Challengers Other Challengers [Member] Other challengers. Other assets - amounts to be settled, subject to offsetting Other Assets, Excluding Repurchase Agreement, Subject To Offsetting Other Assets, Excluding Repurchase Agreement, Subject To Offsetting Debt securities portfolio Debt Securities Portfolio [Member] Debt securities portfolio. Cash and financial instruments pledged as collateral Cash collateral pledged subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities Purchased under staff share plans Decrease Through Share-based Payment Transactions, Equity Decrease Through Share-based Payment Transactions, Equity Methods of generation [axis] Methods of generation [axis] Summary of additional information by country Disclosure Of Tax Credit Adjustment By Geographical Area Explanatory [Text Block] Disclosure of tax credit adjustment by geographical area. Commodity volatility (%) Commodity Volatility [Member] Commodity volatility. Foreign exchange risk in banking books [table] Foreign exchange risk in banking books [table] Foreign exchange risk in banking books [table] Share Repurchase Program Two Share Repurchase Program Two [Member] Share Repurchase Program Two Most important interest rate and credit spread sensitivities explanatory Most important interest rate and credit spread sensitivities explanatory [Table Text Block] Disclosure of Important interest rate and credit spread sensitivities. Disclosure of fair value of plan assets [table] Disclosure of fair value of plan assets [table] Deferred day one profit or loss reserve Fair Value, Deferred Day One Profit Or Loss Reserve [Table Text Block] Fair Value, Deferred Day One Profit Or Loss Reserve Summary of geographical segments banking Disclosure of geographical areas [text block] Fair value of swap Total financial assets Opening balance as at 1 January Closing balance Financial assets, at fair value Statistical Measurement [Domain] Statistical Measurement [Domain] Non-derivative financial instruments to transition to alternative benchmarks Non-Derivative Financial Instruments To Transition To Alternative Benchmarks [Member] Total lending, investment and money market Aggregate lending, investment and money market [member] Aggregate lending, investment and money market. Net defined benefit asset/liability remeasurement reserve Opening balance as at 1 January Closing balance Accumulated amount of remeasurements recognised directly in Other comprehensive income (equity), net of tax Reserve of remeasurements of defined benefit plans Other staff-related liabilities Other staff related liabilities Other staff related liabilities. Sale of the remaining NNHB mortgages Sale Of Remaining NNHB Mortages Sale Of Remaining NNHB Mortages Current service cost Increase in net defined benefit liability (asset) resulting from current service cost Türkiye TÜRKIYE Liabilities arising from financing activities [axis] Liabilities arising from financing activities [axis] Present value techniques Present Value Techniques [Member] Present value techniques. Non cash changes: Non Cash Changes [Abstract] Non Cash Changes Taiwan TAIWAN Other post model adjustments, gross Other Post Model Adjustments, Gross Other Post Model Adjustments, Gross Financial Assets Financial assets at amortised cost, class [member] Operating expense Operating expense Operating expenses Operating expense Ukraine UKRAINE Disclosure of fair value measurement of equity [table] Disclosure of fair value measurement of equity [table] Useful life, intangible assets Useful life measured as period of time, intangible assets other than goodwill Share awards, Vested (in shares) Number of share options exercised in share-based payment arrangement Other Other, Netting [Member] Other. Singapore SINGAPORE Segments banking activities Banking Activities [Member] Banking activities. Expenses not deductible for tax purposes Tax effect of expense not deductible in determining taxable profit (tax loss) Slovakia SLOVAKIA Investments in ING Bank N.V. Investments in subsidiaries reported in separate financial statements Decrease in unused tax losses carried forward Increase (Decrease) in Unused Tax Losses Carried Forward Increase (Decrease) in Unused Tax Losses Carried Forward Money market Money Market Funds 1 [Member] Money market funds [member] Government bonds Government bonds [member] This member represents Government bonds. Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] Equity-accounted investees - share of OCI Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax Share buyback programme (in shares) Share Buyback Programme, Shares Share Buyback Programme, Shares Equity-accounted investees - share of OCI Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, net of tax Net payer and receiver swap Payer And Receiver Swap, Netting [Member] Payer And Receiver Swap, Netting Other liabilities Other current liabilities Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] ING Bank (Australia) Ltd ING Bank Australia Limited [Member] ING Bank Australia Limited. Other assets 11 Other Other assets total Other assets Level 1 Level 1 of fair value hierarchy [member] Summary of loans and advances to customers Disclosure of loans and advances to customers by type [Text Block] Disclosure of loans and advances to customers by type. Share awards granted (in shares) Number of share options granted in share-based payment arrangement Income taxes paid (refund) Tax paid Income taxes paid (refund) Disclosure of detailed information about property, plant and equipment [line items] Disclosure of detailed information about property, plant and equipment [line items] Interest expense on financial liabilities at fair value through profit or loss Interest expense on financial liabilities designated at fair value through profit or loss Romania ROMANIA –  Upfront cash Key management personnel compensation upfront cash Key management personnel compensation upfront cash. Refinancing Refinancing [Member] This member is for loans that have been refinanced based on different terms. Outstandings by economic sectors and geographical area Disclosure of credit risk exposure per economic sector [Table Text Block] Risk concentration: ING Bank portfolio per economic sector, as % of total outstandings Undrawn borrowing facilities Undrawn borrowing facilities Fixtures and fittings Fixtures and fittings [member] Russia RUSSIAN FEDERATION EU IAS 39 carve out impact Reversal of the IFRS-EU 'IAS 39 carve out' impact Adjustment of the EU IAS 39 carve out [Member] This member represents adjustments of the EU IAS 39 carve out. Disclosure of Legal Proceedings [line items] Disclosure of Legal Proceedings [line items] Line items representing legal proceedings. Change in fair value of the hedged item for measuring ineffectiveness for the period Gain (loss) on change in fair value of hedged item used as basis for recognising hedge ineffectiveness Effect of curtailment or settlement Decrease (increase) in net defined benefit liability (asset) resulting from gains (losses) arising from settlements – Trading liabilities Trading liabilities Financial liabilities at fair value through profit or loss that meet definition of held for trading – Addition to loan loss provisions Adjustments for provisions Continuing involvement in derecognised financial assets by type of transfer [domain] Continuing involvement in derecognised financial assets by type of transfer [domain] Past due for 31–60 days Later than one month and not later than two months [member] –  Non–trading derivatives Adjustments For Increase (Decrease) In Non Trading Derivatives Adjustments For Increase (Decrease) In Non Trading Derivatives Debt Instrument [Domain] Debt Instrument [Domain] Debt Instrument [Domain] Percentage of ownership interest acquired Percentage of Ownership Interest Acquired Percentage of Ownership Interest Acquired Deferred tax liability (asset) Deferred tax liability (asset) Deferred tax liability (asset) Deferred tax liability (asset) – Designated as at fair value through profit or loss Designated at fair value through profit or loss Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently Current liabilities Current liabilities Total Pillar II requirement percent Total Pillar II Requirement Percent Total Pillar II Requirement Percent Disclosure of fair value measurement of assets and liabilities [Line Items] Disclosure of fair value measurement of assets and liabilities [Line Items] Disclosure of fair value measurement of assets and liabilities. Positive remeasurement Positive remeasurement of reserve [Member] This member represent positive remeasurement of financial asset reserve. Net fee and commission income Net fee and commission income Net fee and commission income Fee and commission income (expense) Hedge ineffectiveness recognised in the statement of profit or loss gain (+) / loss (-) Hedge ineffectiveness recognised in the statement of profit or loss, gain (+) / loss (-) Gain (loss) on hedge ineffectiveness recognised in profit or loss Negative interest income on liabilities Negative Interest Income On Liabilities Negative interest income on liabilities. Foreign exchange transactions results Trading income (expense) on foreign exchange contracts Individual Assets Or Cash-generating Units [Axis] Individual assets or cash-generating units [axis] Financial impact of decrease Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption Retail Romania Retail Romania [Member] Retail Romania Stichting Regio Bank and Stichting Vakbondsspaarbank SPN Stichting Regio Bank And Stichting Vakbondsspaarbank SPN [Member] Stichting Regio Bank and Stichting Vakbondsspaarbank SPN. Other taxation and social security contributions Current payables on social security and taxes other than income tax Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Other operating expenses Disclosure of other operating expense [text block] Summary of reconciliation between IFRS and underlying income, expenses and net result Disclosure Of Operating Segments Underlying Income Expenses [Text Block] The disclosure of operating segments underlying income expenses. Statement of changes in equity [abstract] Climate transition risk Climate Transition Risk Climate Transition Risk Retained earnings Retained earnings, opening balance Retained earings, closing balance Unappropriated result Retained earnings Measurement [domain] Measurement [domain] Gross amounts of recognised financial assets Gross financial assets subject to offsetting, enforceable master netting arrangements or similar agreements Investments in equity instruments designated at fair value through other comprehensive income [axis] Investments in equity instruments designated at fair value through other comprehensive income [axis] Payout ratio (%) Payout ratio (%) [Member] Payout ratio (%) Unconsolidated structured entities [domain] Unconsolidated structured entities [domain] Single Resolution Fund Single Resolution Fund [Member] Single Resolution Fund Loans and advances to banks Included in Loans and advances to banks Loans And Advances To Banks [Member] The amount of loans and advances the entity has made to banks. Additions and releases of provisions 15 Addition/(Unused Amounts Reversed) of Other Provisions Addition/(unused amounts reversed) of other provisions. Outstanding amount in portfolio Maximum exposure to credit risk Outstandings Maximum exposure to credit risk Mandatory reserve deposits Mandatory reserve deposits [Member] The member stands for the amount of security pledged for mandatory reserve depsoits. Upside scenario Upside scenario [Member] The upside scenario refers to tThe favourable scenarios are calibrated to be symmetric to the adverse scenarios, subject to a ceiling calibrated to relevant recent favourable benchmark scenarios. Carrying amount net investment hedge reserve at the end of the reporting period Carrying amount net investment hedge reserve at the end of the reporting period Accumulated fair value hedge adjustment on hedged item included in carrying amount, assets Unrealised revaluations Increase (Decrease) In Unrealised Revaluations The increase (decrease) in reserves resulting from revaluations to fair value. Decrease through derecognition and repayments financial assets Decrease Through Derecognition And Repayments Financial Assets Decrease Through Derecognition And Repayments Financial Assets Types of risks [domain] Types of risks [domain] Significant unobservable inputs, percentage Percentage Significant Unobservable Inputs Percentage significant unobservable inputs. Parent company condensed statement of changes in cash flows Condensed Cash Flow Statement [Table Text Block] Subsidiaries [axis] Subsidiaries [axis] Interest paid Interest paid Interest paid, classified as operating activities Collective saving allowances for loss pension benefits Collective saving allowances for loss pension benefits Collective saving allowances for loss pension benefits. Impact on deferred tax from change in tax rates Tax effect from change in tax rate Geographical [Domain] Geographical [Domain] 8-10 (BBB) BBB credit grades [member] BBB credit grades. – Trading assets Trading assets Financial assets at fair value through profit or loss, classified as held for trading Real Estate Real estate [member] Real estate estate market of customers. Segment reporting Description of accounting policy for segment reporting [text block] Net defined benefit liability (asset) [domain] Net defined benefit liability (asset) [domain] Markets of customers [axis] Markets of customers [axis] Opening balance Closing balance Liabilities arising from financing activities TLTRO III TLTRO III [Member] TLTRO III Retail Poland Retail Poland [Member] Retail Poland Diba Mortgage Pfandbriefe Diba Mortgage Pfandbriefe [Member] Diba Mortgage Pfandbriefe Accumulated fair value hedge adjustment on hedged item included in carrying amount, liabilities Accumulated fair value hedge adjustment on hedged item included in carrying amount, liabilities Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Adjustment Impact IAS 29 on opening balance Cumulative Effect, Period of Adoption, Adjustment [Member] 1.00% Fixed Subordinated Tier 2 Notes (EUR) 1.00% Fixed Subordinated Tier 2 Notes (EUR) [Member] 1.00% Fixed Subordinated Tier 2 Notes (EUR) Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] Disclosure of fair value measurement of assets [table] Disclosure of fair value measurement of assets [table] Assets Not Freely Disposable [table] Assets Not Freely Disposable [table] Assets Not Freely Disposable. Disclosure of balance sheet and profit loss information of associate Disclosure Of Statement Of Financial Position And Income Statement Of Associate [Table Text Block] Disclosure Of Statement Of Financial Position And Income Statement Of Associate Adjustment Adjustment [member] Adjustment. 4.252% Callable Fixed-to-Floating Rate Senior Notes due 2033 4.252% Callable Fixed-to-Floating Rate Senior Notes due 2033 [Member] 4.252% Callable Fixed-to-Floating Rate Senior Notes due 2033 Classes of ordinary shares [axis] Classes of ordinary shares [axis] Currency translation reserve Reserve of exchange differences on translation Negative fair value movements from using reasonable possible alternatives Negative Fair Value Movements Using Possible Alternatives Negative fair value movements using possible alternatives. Cash and financial instruments received as collateral Cash collateral received subject to enforceable master netting arrangement or similar agreement not set off against financial assets Total liabilities and equity Equity and liabilities USA UNITED STATES Exchange rate differences Increase (decrease) through net exchange differences, other provisions Finance lease receivables Disclosure of finance lease receivable under operating lease by lessor [Text Block] Disclosure of finance lease receivable under operating lease by lessor. In accordance with IFRS-EU (attributable to the shareholders of the parent) Net result attributable to owners of parent EU IFRS Net result attributable to owners of parent EU IFRS 8–10 (BBB) Internal Credit Grade four [member] internal credit grade four. Exchange rate differences and other changes Increase (Decrease) Through Changes In Foreign Exchange Rates And Other Changes, Net Defined Benefit Liability (Asset) Increase (Decrease) Through Changes In Foreign Exchange Rates And Other Changes, Net Defined Benefit Liability (Asset) Finance leases Finance leases [Member] This member represents financing of equipment and to a lesser extent real estate for third parties, where ING is the lessor. Impairment of financial assets Description of accounting policy for impairment of financial assets [text block] Vesting of variable remuneration Fixed expenses and vesting of variable remuneration expenses Fixed expenses and vesting of variable remuneration expenses. Repurchase, securities lending and similar agreements Repurchase Securities Lending And Similar Agreements [Member] Repurchase securities lending and similar agreements. 4.13% Fixed Rate Subordinated Green Tier 2 Notes (EUR) 4.13% Fixed Rate Subordinated Green Tier 2 Notes (EUR) [Member] 4.13% Fixed Rate Subordinated Green Tier 2 Notes (EUR) Loan modification Loan modification [Member] A type of program to provide relief to the debtors. Other Other Other economic sector [member] Other economic sector [member] Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items] Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items] Services Services [Member] Services. Investment in associates and joint ventures Description of accounting policy for investment in associates and joint ventures [text block] Fee income recognised Income from structured entities Foreign exchange movement Increase (decrease) through effect of changes in foreign exchange rates, liabilities arising from financing activities Changes in liabilities arising from financing activities Changes in liabilities arising from financing activities [abstract] $1,250,000,000 6.114% Callable Fixed-to-Floating Rate Senior Notes due 2034 6.114% Callable Fixed-to-Floating Rate Senior Notes due 2034 [Member] 6.114% Callable Fixed-to-Floating Rate Senior Notes due 2034 Net drawdowns and repayments Net Drawdown (Repayment) Of Financial Assets Net Drawdown (Repayment) Of Financial Assets Available common equity Tier 1 capital Common equity tier one capital amount Common equity tier one capital amount – Securities at amortised cost Purchase of financial assets measured at amortised cost, classified as investing activities Tier 1 ratio Tier one capital ratio Tier one capital ratio Associates and joint ventures Associates and joint ventures [member] Associates and joint ventures. City Area Code City Area Code Disclosure of net defined benefit liability (asset) [table] Disclosure of net defined benefit liability (asset) [table] US Dollar United States of America, Dollars Methods applied in determining fair values of financial assets and liabilities Disclosure of fair value of financial instruments [text block] Increase (decrease) in local bank taxes Increase (Decrease) In Local Bank Taxes Increase in Local bank taxes. Useful life, property and equipment Useful life measured as period of time, property, plant and equipment Non performing Loans [line items] Disclosure of financial assets that are either past due or impaired [line items] Other changes Increase (decrease) through other changes, equity Corporate Lending Loans to corporate entities [member] Categories of financial liabilities [domain] Categories of financial liabilities [domain] Increase (decrease) due to sales and repayments, financial assets Increase (decrease) due to sales and repayments, financial assets Increase (decrease) due to sales and repayments, financial assets Related parties Disclosure of related party [text block] Management board of ING Bank Management Board Of ING Bank [Member] Management Board of ING Bank. Impairments Impairment loss recognised in profit or loss, intangible assets and goodwill Risk management Disclosure Of Financial Instruments And Financial Risk Management [Text Block] Entire disclosure of financial instruments and financial risk management. Change in fair value of debt instruments at fair value through other comprehensive income Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax Wholesale Banking Wholesale Banking [Member] Level 3 Level 3 of fair value hierarchy [member] Total income tax related to components of other comprehensive income Income tax relating to components of other comprehensive income Disposals Disposals, property, plant and equipment including right-of-use assets Pro Forma Pro Forma [Member] Growth markets Growth Market [Member] Growth markets. Transaction result Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation Other Investments Other Equity Investments [Member] Other Equity Investments member. Net deferred tax Net Deferred Tax [Member] Net deferred tax. Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] Disclosure of Investment Income [Abstract] Investment income [abstract] Disclosure of Investment Income. Entitys Total For Impairment Of Financial Assets [Member] Impairment of financial assets [domain] Write-offs Impairments Decrease through write-off, financial assets Negative interest expense on assets Negative Interest Expense On Assets Negative interest expense on assets. Change in future growth rate assumption Sensitivity, Future growth rate Percentage future growth rate, a possible change in key assumptions to calculate recoverable amouns of the unimpaired CGU. Dividend per ordinary share [abstract] Dividend per ordinary share [abstract] Global GDP rate assumed Global GDP Rate Increase (Decrease) Assumed Global GDP Rate Increase (Decrease) Assumed Pension and post-employment benefits Pension And Post-employment Benefits [Member] Pension and post-employment benefits. Percentage for no covers Percentage for no covers The approximate amount of investments covered, expressed as a percentage. Adjustment for non controlling interest Increase (decrease) through transactions with owners, equity Reconciliation of weighted average statutory income tax rate to effective income tax rate Disclosure of reconciliation of average effective tax rate and applicable tax rate explanatory [Table Text Block] Disclosure of reconciliation of average effective tax rate and applicable tax rate. Past Due Status [Axis] Past due status [axis] Summary of financial assets at fair value through profit or loss Disclosure of financial instruments at fair value through profit or loss [text block] Debt Instrument 1 [Axis] Debt Instrument 1 [Axis] Debt instrument 1. Current tax expense (income), related to Pillar Two income taxes Current tax expense (income), related to Pillar Two income taxes Property development and obtained from foreclosures Property Development And Foreclosures The amount transferred from investment property under construction or development and foreclosures to completed investment property. Derivatives by benchmark rate Derivatives By Benchmark Rate [Member] - Financial assets at fair value through other comprehensive income Purchase of financial assets measured at fair value through other comprehensive income, classified as investing activities Disclosure of detailed information about intangible assets [abstract] Disclosure of detailed information about intangible assets [abstract] Funds on deposit – Customer deposits and other funds on deposit -Customer deposits and other funds on deposit [Member] This member stands for customer deposits and other funds on deposit. Disclosure Of Loans And Advances To Banks [Abstract] Loans and advances to banks [Abstract] Disclosure of loans and advances to banks. Summary of exposure to (reverse) repurchase agreements Disclosure of repurchase and reverse repurchase agreements [text block] - ROU cars Motor vehicles [member] Other Other Segment [Member] This member stands for other segment. Income related to a prior insolvency of a financial institution in the Netherlands Reversal of impairment loss recognised in profit or loss, trade receivables Gains (losses) on financial assets at fair value through profit or loss, designated upon initial recognition or subsequently Gains (losses) on financial assets at fair value through profit or loss, designated upon initial recognition or subsequently Other assets Other assets [member] Interest income on financial assets at fair value through profit or loss Interest income on financial assets designated at fair value through profit or loss Increase (decrease) in financial assets Increase in loan loss provisions Increase (decrease) in financial assets Increase (decrease) in financial assets Classes of other provisions [axis] Classes of other provisions [axis] Type of credit risk cover [Axis] Type of Credit Risk Cover [Axis] Summary of cash and balances with central bank Disclosure Of Increase Decrease In Cash And Bank Balance With Central Bank [Table Text Block] Disclosure of increase decrease in cash and bank balance with central bank. Debt securities in issue Disclosure of debt instruments [text block] Transfer to/from other reserves Trasnfer to from other reserves The amount of transfer to from other reserves. Legal proceedings provision Legal proceedings provision Carrying amount presented as fair value Not measured at fair value in statement of financial position but for which fair value is disclosed [member] –  Deposits from banks, not payable on demand Adjustments for increase (decrease) in deposits from banks Other Other currency Other Currency [Member] Other Address Other Address [Member] Schedule of other assets Schedule of Other Assets Explanatory [Table Text Block] Schedule of other assets. Disclosure of credit risk exposure [line items] Disclosure of credit risk exposure [line items] Summary of pension and other staff-related benefit costs Disclosure of defined benefit plans [text block] Ordinary shares Ordinary shares [member] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [text block] Earnings per ordinary share Disclosure of earnings per share [text block] Gross carrying amount Gross carrying amount [member] Weighted average statutory tax rate Applicable tax rate Fees of Group's auditor Auditor's remuneration [abstract] –  Provisions and other liabilities –  Other Adjustments for increase (decrease) in other liabilities 1 (AAA) AAA credit Grades [Member] AAA credit Grades. Retail Banking Retail Banking [Member] Within 1 year Not later than one year [member] Europe Europe [Member] Corporate Line Corporate Line Banking [Member] Corporate line banking. Interest expense on non-trading derivatives (hedge accounting) Interest Expense On Non Trading Derivatives Qualified For Hedge Accounting Interest expense on non trading derivatives qualified for hedge accounting. Current tax liabilities Current tax liabilities Trading and Non-trading Trading And Non-Trading Liabilities [member] Fee and commission income Total fee and commission income Fee and commission income Other Balances on other deposits from customers Audit Information [Abstract] Audit Information Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss, category [member] Total Auditor's remuneration Net amounts of financial assets presented in the statement of financial position Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position Property in own use Property in own use and Equipment Property, plant and equipment [member] Disclosure of financial assets [line items] Disclosure of financial assets [line items] Property and equipment Description of accounting policy for property, plant and equipment [text block] Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [table] Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [table] Sale and repurchase, debt Sale And Repurchase Of Debt Securities [Member] Sale and repurchase of debt securities. Repayments of principal portion of lease liabilities Payments of lease liabilities, classified as financing activities Payments of lease liabilities, classified as financing activities Reverse repurchase, securities borrowing and similar agreements Reverse Repurchase Securities Borrowing And Similar Agreements [Member] Reverse repurchase securities borrowing and similar agreements. Classification and measurement of financial instruments Description of accounting policy for classification and measurement of financial instruments explanatory [Policy Text Block] The description of accounting policy for classification and measurement of financial instruments. 5.335% Callable Fixed-to-Floating Rate Senior Notes due 2030 5.335% Callable Fixed-to-Floating Rate Senior Notes due 2030 [Member] 5.335% Callable Fixed-to-Floating Rate Senior Notes due 2030 America America Americas [Member] Effect of curtailment or settlement Decrease (increase) in net defined benefit liability (asset) resulting from payments in respect of settlements Accrued assets Accrued Assets The amount of assets accrued as part of the total other assets Other changes Increase (decrease) through changes in composition of the group and other changes Increase (decrease) through changes in composition of the group and other changes. Net Interest Income at Risk [Table] Disclosure of risk management strategy related to hedge accounting [table] Sensitivity analysis of level 3 instruments Disclosure Of Fair Value Financial Sensitivity Analysis Explanatory [Table Text Block] Disclosure of fair value financial sensitivity analysis. Percentage of business lending of outstanding Percentage of Increase (Decrease) of Revenue Percentage of business lending of outstandings. Diluted earnings (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Gross amounts of recognised financial liabilities Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements Mortgages Residential mortgages Mortgages [member] Included in Loans and advances to customers Loans to consumers [member] Floating rate debt securities Floating rate Floating interest rate [member] Repayments of subordinated loans Repayments of subordinated liabilities Loan commitments Outstanding commitments made on behalf of entity, related party transactions 5.525% Callable Fixed-to-Floating Rate Senior Notes due 2036 5.525% Callable Fixed-to-Floating Rate Senior Notes due 2036 [Member] 5.525% Callable Fixed-to-Floating Rate Senior Notes due 2036 Classes of intangible assets other than goodwill [domain] Classes of intangible assets other than goodwill [domain] Percentage on financial asset based on unadjusted quoted price percentage on financial assets based on unadjusted quoted prices in inactive markets Percentage on financial assets based on unadjusted quoted prices in inactive markets. Total Other comprehensive income movement for the year Other Comprehensive Income Net Of Tax Gains Losses On Remeasurements Of Defined Benefit Plans, Before Cancellations Other Comprehensive Income Net Of Tax Gains Losses On Remeasurements Of Defined Benefit Plans, Before Cancellations Other Liabilities [Abstract] Other liabilities [abstract] Consolidation Description Of Accounting Policy For Consolidation Explanatory [Policy Text Block] The description of accounting policy for consolidation. Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Other items where offsetting is applied in the statement of financial position Other Items Where Offsetting Is Applied In The Statement Of Financial Position, Netting [Member] Other items where offsetting is applied in the statement of financial position. Schedule of property and equipment Disclosure of Property Plant and Equipment by Type Explanatory [Table Text Block] Disclosure of property plant and equipment by type explanatory. Guarantees issued by ING Groep N.V. Guarantees issued Guarantees issued –  Trading securities Trading securities [member] Decrease In Discount Rate Decrease In Discount Rate [Member] Decrease In Discount Rate Reserves within equity [domain] Reserves within equity [domain] Disclosure Of Liabilities By Maturity Schedule [Line Items] Disclosure Of Liabilities By Maturity Schedule [Line Items] Unrealised gains on (losses) recognised in the statement of profit or loss Unrealised gains on (losses) recognised in the statement of profit or loss Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement Non-controlling interests Non-controlling interests Non-controlling interests Profit (loss), attributable to non-controlling interests Stage 3 Stage three [Member] This member stands for assets assessed to have experienced a significant increase in credit risk for long term. Equity 19 Equity Equity [abstract] FVOCI equity securities - Equity securities –  equity securities Other equity securities [member] Other operating expenses 26 Other operating expense Other expenses Other expenses, by nature Performing Restructuring loans Substandard Grade [Member] This member represents internal credit grade: Substandard grade. Distribution of products Distribution Of Products Fee And Commission Expense Distribution Of Products Fee And Commission Expense Local bank taxes Local bank taxes Local bank taxes. Basic earnings from continuing operations Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Variable compensation Key management personnel variable compensation [abstract] Key management personnel variable compensation. Ownership interest held in equity based investments Ownership Interest Held In Equity Based Investments Ownership interest held in investments accounted for by equity method. Belgium, Poland, Germany, Netherlands Belgium, Poland, Germany, Netherlands [Member] Belgium, Poland, Germany, Netherlands Rents received in advance Advances received, representing contract liabilities for performance obligations satisfied at point in time Shares repurchased, effective price per share (in EUR per share) Shares Repurchased, Effective Price Per Share Shares Repurchased, Effective Price Per Share Additions Additions other than through business combinations, intangible assets other than goodwill Disclosure of fair value measurement of liabilities [line items] Disclosure of fair value measurement of liabilities [line items] Exchange rate differences Gains (losses) recognised in profit or loss on exchange differences, fair value measurement, entity's own equity instruments Financial assets at FVOCI Debt securities at fair value through other comprehensive income Financial assets at fair value through other comprehensive income, category [member] Pension and other post-employment benefits Pension And Other Post Employment Benefits, Defined Contribution Plans Pension And Other Post Employment Benefits, Defined Contribution Plans. Financial assets mandatorily at FVPL Debt securities mandatorily measured at fair value through profit or loss Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member] Value to Loan Categorization [Member] Value to Loan Categorization [Domain] Value to Loan Categorization Fair value pledged mortgage loans Fair Value Pledged Mortgage Loans Fair value pledged mortgage loans. ING Commercial Finance B.V. ING Commercial Finance B.V. [Member] ING Commercial Finance B.V. Deferred tax asset recognised Unused Tax Losses For Which Deferred Tax Asset Recognised Unused tax losses for which deferred tax asset recognised. Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Past due for >90 days Later than three months [member] Change in value of hedged item used for calculating hedge ineffectiveness for the period Gain (loss) on change in fair value of hedging instrument used as basis for recognising hedge ineffectiveness Impact of interest rate volatility, EU IAS39 carve out adjustment Impact Of Interest Rate Volatility, EU IAS 39 Carve Out Adjustment Impact Of Interest Rate Volatility, EU IAS 39 Carve Out Adjustment Parent company condensed statement of profit or loss Condensed Income Statement [Table Text Block] Share Repurchase Program Three Share Repurchase Program Three [Member] Share Repurchase Program Three Customer Deposits, By Customer [Domain] Customer Deposits, By Customer [Domain] Customer Deposits, By Customer [Domain] Auditor Firm ID Auditor Firm ID –  Pension costs Key management personnel compensation, post-employment benefits Disclosure of contingent liabilities [abstract] Disclosure of contingent liabilities [abstract] Other Other liabilities classified as other Other liabilities classified as other. DOP deferred on new transactions during the period Fair Value Measurement, Deferred Day One Profit Or Loss Reserve, Profit (Loss) Deferred On New Transactions Fair Value Measurement, Deferred Day One Profit Or Loss Reserve, Profit (Loss) Deferred On New Transactions Derivatives trading results Trading income (expense) on derivative financial instruments Investment income Disclosure of Investment Income [text block] Disclosure of investment income. Belgium Associate Belgium Associate [Member] Belgium Associate Changes in credit liability reserve Changes in credit liability reserve The amount of Changes in credit liability reserve of equity. Equipment Office equipment [member] Disclosure of subsidiaries [table] Disclosure of subsidiaries [table] Types of Non-hedges [Axis] Types of Non-hedges [Axis] Capital Conservation Buffer Capital Conservation Buffer [member] Capital Conservation Buffer [member] Subordinated liabilities Subordinated Liabilities [Member] Subordinated Liabilities [Member] Increase (decrease) due to departure from requirement of IFRS Increase (decrease) due to departure from requirement of IFRS [member] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table] Title and Position [Axis] Title and Position [Axis] Other Investments in Associates and Joint Ventures [member] Other Investments in Associates and Joint Ventures [member] Other investments in associates and joint ventures. Financial liabilities Financial liabilities at amortised cost Average tax rate Average Effective Deferred Tax Rate Average effective deferred tax rate. No Trading Symbol Flag No Trading Symbol Flag Increase (decrease) of forborne assets Increase (Decrease) Of Forborne Assets Increase decrease of forborne assets. Other assets Disclosure of other assets [text block] Deposits from banks 12 Deposits from banks Deposits from banks Deposits from banks Non-trading derivatives Non-trading derivatives [member] The member represents non-trading derivatives. Customer deposits Deposits Customer deposits Deposits from customers Type of measurement of expected credit losses [domain] Type of measurement of expected credit losses [domain] Deposits from banks Disclosure of deposits from banks [text block] Deposits from customers, excluding repurchase agreements subject to offsetting Deposits from customers, excluding repurchase agreements subject to offsetting Deposits from customers, excluding repurchase agreements subject to offsetting Perpetual additional tier 1 contingent capital securities Perpetual Additional Tier 1 Contingent Capital Securities [Member] Perpetual Additional Tier 1 Contingent Capital Securities Property and equipment 9 Property, plant and equipment including right-of-use assets Opening balance as at 1 January Closing balance Property, plant and equipment including right-of-use assets Fixed interest rate Fixed Interest Rate Fixed interest rate of derivative instruments. Financial liabilities, at fair value Opening balance as at 1 January Closing balance Financial liabilities, at fair value Disclosure of finance lease and operating lease by lessor [line items] Disclosure of maturity analysis of finance lease payments receivable [line items] Assets held for sale Non-current assets or disposal groups classified as held for sale 1-5 years More than 1 year but less than 5 years Later than one year and not later than five years [member] MDA Trigger, Tier 1 capital MDA Trigger, Tier 1 Capital MDA Trigger, Tier 1 Capital Valuation techniques used in fair value measurement [domain] Valuation techniques used in fair value measurement [domain] Disclosure of detailed information about hedged items [table] Disclosure of detailed information about hedged items [table] Class Of Level 3 Assets And Liabilities By Type [axis] Class Of Level 3 Assets And Liabilities By Type [axis] Maturity/settlement Settlements, fair value measurement, liabilities Maximum Top of range [member] Disclosure of Capital management [table] Disclosure of Capital management [table] Disclosure of Capital management [table] Polish Zloty Poland, Zlotych Scenario [Axis] Scenario [Axis] Trading assets Trading assets [member] Trading assets. Parent company condensed statement of other comprehensive income Condensed Statement of Comprehensive Income [Table Text Block] Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [text block] Remeasurement of the net defined benefit asset/liability Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans ING Group ING Group [member] ING group. Other Wholesale Banking Other Wholesale Banking [Member] 17–22 (CCC and NPL) Internal Grade Seven [Member] Internal Grade Seven. Participation exemption Tax effect of revenues exempt from taxation Carrying Amount Accumulated Depreciation Amortisation And Impairment And Gross Carrying Amount [Axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Without EU IAS 39 carve-out Without EU IAS 39 Carve-Out [Member] Defined benefit obligation Defined benefit obligation, at present value Management Board Banking Other related parties [member] Foreign Investments Foreign exchange Currency risk [member] Net remeasurement of loan loss provisions Impairment loss (reversal of impairment loss) recognised in profit or loss Past due for 61–90 days Later than two months and not later than three months [member] Interest rate volatility (bps) Interest rate volatility [Member] The member represents significant unobservable input from interest rate volatility. Exchange rate differences Increase (decrease) through foreign exchange, financial assets Other comprehensive income Other comprehensive income Other comprehensive income Classes of liabilities [axis] Classes of liabilities [axis] Counterparties [domain] Counterparties [domain] Transfers out of Level 3 Transfers out of Level 3 of fair value hierarchy, assets Summary of provisions by type Disclosure of provisions by type explanatory [Table Text Block] Disclosure of provisions by type. Past due status [domain] Past due status [domain] Derivatives at equity Derivatives At Equity [Member] Derivatives at equity. Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] – Depreciation and amortisation Adjustments for depreciation and amortisation expense Irrevocable facilities Irrevocable facilities Irrevocable facilities. Forecast Forecast [Member] Dividends and other cash distributions paid Dividends and Other Cash Distributions Paid Classified As Financing Activities Dividends and Other Cash Distributions Paid Classified As Financing Activities Title of 12(b) Security Title of 12(b) Security Joint ventures Joint ventures where entity is venturer [member] Customer deposits Customer Deposits Category [Member] Customer deposits. Summary of investments in associates and joint ventures Disclosure in investments in associates and joint ventures explanatory [Table Text Block] Disclosure in investments in associates and joint ventures explanatory. Programme [Domain] Programme [Domain] Programme [Domain] Reclassification adjustments on cash flow hedges for which hedged future cash flows are no longer expected to occur, net of tax Reclassification adjustments on cash flow hedges for which hedged future cash flows are no longer expected to occur, net of tax Net defined benefit assets - Other assets Net defined benefit asset Hedged items [domain] Hedged items [domain] WIBOR Indexed Fair Value And Cash Flow Hedges [Member] WIBOR Indexed Fair Value And Cash Flow Hedges [Member] WIBOR Indexed Fair Value And Cash Flow Hedges Contributions to the Deposit Guarantee Schemes Contributions to deposit guarantee schemes The portion of regulatory costs that represents contributions to deposit guarantee schemes. NII-at-Risk Interest Income Risk, Netting [Member] This member represents net interest rates exposure on net interest income. Summary of assets by contractual maturity Disclosure Of Contractual Maturity Of Assets Explanatory [Table Text Block] Disclosure Of Contractual Maturity Of Assets Explanatory – Cross currency swaps – Cross currency swaps Currency swap contract [member] Depreciation Depreciation, property, plant and equipment including right-of-use assets Shares repurchased, average price per share (in EUR per share) Shares Repurchased, Average Price Per Share Shares Repurchased, Average Price Per Share (Reverse) repos Reverse (Repos) [Member] Subsidiaries [domain] Subsidiaries [domain] Borrowings by name [axis] Borrowings by name [axis] Increase (decrease) of forborne assets, percentage Decrease In Percentage Of Forborne Assets Increase (Decrease) in percentage Of Forborne Assets Commercial Banks Commercial Banks [member] Commercial Banks [member] Customer deposits Disclosure of deposits from customers [text block] Maturities of gross investment in finance lease receivables Finance lease receivables Summary of financial instruments by type Disclosure of financial instruments [text block] Other reserves Other Reserves [Abstract] Other Reserves Classes of intangible assets and goodwill [domain] Classes of intangible assets and goodwill [domain] Hedging instrument, assets Hedging instrument, assets Rating class concentration increase or (decrease) percentage Rating class concentration increase or (decrease) percentage Change in rating class concentration percentage. Share awards related in equity settled share based payment arrangements (in shares) Share Awards Relating To Equity settled Sharebased Payment Arrangement Share awards relating to equity settled sharebased payment arrangement. New IFRSs [domain] New IFRSs [domain] Retail Retail1 [Member] Retail1 Disclosure of detailed information about intangible assets [line items] Disclosure of detailed information about intangible assets [line items] Dividends received Decrease In Investments In Subsidiaries Joint Ventures And Associates From Dividends Received Departure from requirement of IFRS [axis] Departure from requirement of IFRS [axis] Modification of financial instruments Description of accounting policy for financial instruments [text block] Amount of change in fair value of the credit derivatives attributable to changes in credit risks 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 Change through net result Deferred taxation Deferred tax expense (income) recognised in profit or loss Realised gain/loss recognised in the statement of profit or loss during the period Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, liabilities Increase due to financial participation Increase (Decrease) of Revenue Due to Financial Participation Increase (Decrease) of Revenue Due to Financial Participation Average threshold ratio Average Threshold Ratio Average Threshold Ratio Unearned future finance income on finance leases Undiscounted finance lease payments to be received Disclosure of key management personnel compensation [table] Disclosure of transactions between related parties [table] Total other interest income Interest and other financial income Interest income on other financial assets Parent company condensed statement of changes in equity Condensed Financial Statements [Table Text Block] – Other investments Purchase of investments other than investments accounted for using equity method Types of hedges [axis] Types of hedges [axis] Collateralisation Percentage Of Loan To Value Percentage Of Loan To Value Investments, net Investments, Net Investments, Net Attribution of expenses by nature to their function [axis] Attribution of expenses by nature to their function [axis] More than 5 years but less than 10 years Later than five years and not later than ten years [member] Net monetary loss reflecting IAS 29 hyperinflation impact Gain (Loss) From Hyperinflation Remeasurement Gain (Loss) From Hyperinflation Remeasurement Trading income (expense) [line items] Trading income (expense) [line items] Trading income (expense) [line items] Economic growth rate Economic Growth Rate Economic Growth Rate Disclosure of non-adjusting events after reporting period [table] Disclosure of non-adjusting events after reporting period [table] Total management adjustments Management Adjustments Management Adjustments Property and equipment Disclosure of property, plant and equipment [text block] Non-trading derivatives Non Trading Derivatives Assets [Member] Non-trading derivatives. Recoveries of amounts previously written off Gain on recovery of loans and advances previously written off Capital requirements [axis] Capital requirements [axis] Defined contribution plans Post-employment benefit expense, defined contribution plans Components of equity [domain] Components of equity [domain] Dividends and other cash distributions 29 Dividends and other cash distributions Dividends recognised as distributions to owners Disclosure of operating segments [line items] Disclosure of operating segments [line items] Changes in deferred tax liability (asset) [abstract] Changes in deferred tax liability (asset) [abstract] Credit spread sensitivities per risk class and sector explanatory Credit spread sensitivities per risk class and sector explanatory [Table Text Block] Disclosure of credit spread sensitivities per risk class and sector. Number of debentures held Number Of Debentures Held Number Of Debentures Held Average Weighted average [member] Financial assets and liabilities at FVPL Financial assets and liabilities at fair value through profit or loss [Member] This member stands for the financial assets and liabilities at fair value through profit or loss category. Investment and money market Investment and Money Market [member] Investment and Money Market. Current tax assets Current tax assets Disclosure Of Market Risk Exposure [Line Items] Disclosure Of Market Risk Exposure [Line Items] Utilised Provision used, other provisions –  Severance benefits 3 Key management personnel compensation, termination benefits Depreciation Depreciation1 [Member] Depreciation. Range [domain] Range [domain] Classes Of Contingent Liabilities [Axis] Classes of contingent liabilities [axis] Common equity Tier 1 ratio and a fully- loaded common equity Tier 1 ratio Common Equity and Fully Loaded Common Equity Tier One Capital Percentage Common Equity and Fully Loaded Common Equity Tier One Capital Percentage Auditor fees [abstract] Auditor fees [abstract] Auditor fees Total interest income Interest income Scenario [Domain] Scenario [Domain] Forborne assets Forborne assets The amount of financial assets that are subject to exposure, performing or non-performing. Of which: non-performing Non-performing [member] This member stands for non performing category of risk. Financial institutions Financial institutions [Member] Financial institutions. Total ECL collective assessment Total ECL Collective Assessment Total ECL Collective Assessment Fixed Compensation Key management personnel fixed compensation [abstract] Key management personnel fixed compensation. Loans and advances to banks, excluding repurchase agreements not subject to offsetting Loans And Advances To Banks, Excluding Repurchase Agreements Not Subject To Offsetting Loans And Advances To Banks, Excluding Repurchase Agreements Not Subject To Offsetting –  Loans and advances to banks, not available on demand –  Net change in Loans and advances to/from banks, not available/payable on demand Adjustments for decrease (increase) in loans and advances to banks Address Type [Domain] Address Type [Domain] Nominal amount of hedging instrument Notional amount Unconsolidated structured entities [axis] Unconsolidated structured entities [axis] Securities lending, debt Securities lending, debt [Member] Cash flow hedge Reserve of cash flow hedges Reserve of cash flow hedges [member] ING Luxembourg S.A. ING Luxembourg SA [Member] ING Luxembourg SA. Investments in associates and joint ventures Disclosure of investments accounted for using equity method [text block] Other fee and commission income Other fee and commission income Continuing involvement in derecognised financial assets by type of transfer [axis] Continuing involvement in derecognised financial assets by type of transfer [axis] Summary of exposure to debt securities Summary of Exposure To Debt Securities [Table Text Block] Ukraine Hryvnia Ukraine, Hryvnia Diluted earnings per ordinary share (in EUR per share) Diluted earnings (in EUR per share) Diluted earnings (loss) per share Maturity [domain] Maturity [domain] Categories of financial liabilities [axis] Categories of financial liabilities [axis] Financial assets with contractual cash flows modified during reporting period while loss allowance measured at lifetime expected credit losses, amortised cost before modification Financial assets with contractual cash flows modified during reporting period while loss allowance measured at lifetime expected credit losses, amortised cost before modification 2-4 (AA) 2-4 (AA) AA credit grades [member] AA credit grades. Percentage of residential mortgage oustanding Percentage of residential mortgage oustanding Percentage of residential mortgage oustanding Disclosure of reconciliation of liabilities arising from financing activities [table] Disclosure of reconciliation of liabilities arising from financing activities [table] Dutch bank tax Non-Deductible Dutch Bank Tax [Member] ING Groep N.V. ING Groep NV [Member] ING Groep NV. HPI House Price Index Economic Core Variable [Member] This member stands for the House Price Index, a key historic macroeconomic core variable. The House Price Index is compared against the forecast paths of the probability weights for each scenario, demonstrating 5 year cumulative growth in Upside scenarios; 5 year average in Baseline; cumulative fall (peak-to-trough) in Downside scenarios. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Total received collateral available for sale or repledge at fair value Non-cash assets pledged as collateral for which transferee has right by contract or custom to sell or repledge collateral Amount reclassified from CFH reserve to profit or loss Amounts recycled to profit or loss Reclassification adjustments on cash flow hedges, before tax Fee and commission expense [abstract] Fee and commission expense [abstract] Total interest expense Total interest expense Interest expense Disclosure of geographical areas [line items] Disclosure of geographical areas [line items] Percentage of forborne assets Percentage Of Forborne Assets Percentage of forborne assets. –  Deferred cash Key management personnel compensation deferred cash Key management personnel compensation deferred cash. Indirect taxes Tax expense other than income tax expense Disclosure Of Capital Management [Abstract] Disclosure of Capital Management [Abstract] Deferred taxes for lease liabilities Deferred taxes for lease liabilities The amount of deferred tax liabilities arising from changes in accounting policy and recognizing right of use assets. Dividends paid Dividends paid, ordinary shares Impairment of an intangible asset Impairment loss recognised in profit or loss, intangible assets other than goodwill 14–16 (B) Internal Grade Six [Member] Internal Grade Six. ING Bank Slaski S.A. ING Bank Slaski SA [Member] ING Bank Slaski SA. Assets and liabilities [domain] Assets and liabilities [domain] Result for the year Increase (decrease) through appropriation of retained earnings, equity Net interest income [abstract] Net interest income [abstract] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] 2 to 3 years More than 2 years but less than 3 years Later than two years and not later than three years [member] Cash and cash equivalents Cash and cash equivalents [abstract] Schedule of dividends to shareholders of the parent Disclosure Of Dividend Per Ordinary Share Explanatory [Table Text Block] The disclosure of dividend per ordinary share. Gross amounts of recognised financial assets offset in the statement of financial position Gross financial assets set off against financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements Risk weighted assets Risk weighted assets1 Risk weighted assets1 Certain consumer credit products Certain Consumer Credit Products [Member] Fair values of financial assets and liabilities Description of accounting policy for fair value measurement [text block] Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [table] Total capital ratio required Minimum capital ratio required Minimum capital ratio required. Changes to accounting policies and presentation Disclosure of changes in accounting policies [text block] Statement [Line Items] Statement of changes in equity [line items] Total comprehensive income attributable to: Comprehensive income attributable to [abstract] Basic earnings from continuing operations (in EUR per share) Basic earnings (loss) per share from continuing operations Disclosure of geographical areas [table] Disclosure of geographical areas [table] Contingent liabilities and commitments Commitments Commitments Contingent liabilities and commitments. Dividend declared Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners Total for all consolidated structured entities Total for all consolidated structured entities [member] Economic sector / portfolio based adjustments Economic Sector/Portfolio Based Adjustments Economic Sector/Portfolio Based Adjustments ING Bank Hipoteczny CBP ING Bank Hipoteczny CBP [Member] ING Bank Hipoteczny CBP Financial assets at fair value through profit or loss Total debt securities at fair value through profit or loss Debt securities designated and mandatorily at fair value through profit or loss Financial assets at fair value through profit or loss, category [member] Past due for 1–30 days Current [member] Exchange rate differences Increase (decrease) through net exchange differences, intangible assets and goodwill Statement of financial position [abstract] Statement of financial position [abstract] Potential sale of ING Bank Eurasia JSC Disclosure of discontinued operations [text block] Other net income 24 Other net income Other operating income (expense) Other interest expense Total other interest expense Interest and other financial expenses Interest expense on other financial liabilities Cover [Abstract] Cover [Abstract] Purchases of treasury shares Payments to acquire or redeem entity's shares Maximum Maximum [Member] Defined benefit plans [axis] Defined benefit plans [axis] Other liabilities - amounts to be settled subject to offsetting Other liabilities subject to offsetting Other liabilities subject to offsetting More than 10 years but less than 20 years Later Than Ten Years And Not Later Than Twenty Years [Member] Later Than Ten Years And Not Later Than Twenty Years Releases Unused provision reversed, other provisions Un-weighted ECL Exposure to credit risk on loan commitments and financial guarantee contracts Entity Shell Company Entity Shell Company Off-balance sheet commitments Commitments made by entity, related party transactions Transfer from Level 2 to Level 1 Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period Impairments Impairment Loss Of Investments In Associates And Joint Ventures Classes of liabilities [domain] Classes of liabilities [domain] Revaluation reserve: Property in own use Reserve Of Property In Own Use Reserve of property in own use. Price based Price Based [Member] Price based. Parent company financial statements Description Of Accounting Policy For Parent Company Accounts [Policy Text Block] Description Of Accounting Policy For Parent Company Accounts Capital adequacy assessment Disclosure of Capital Adequacy [Table Text Block] Disclosure of Capital Adequacy [Text Block] – Cross currency interest rate swaps Cross Currency Interest Rate Swap Contract [Member] Cross Currency Interest Rate Swap Contract Other post-employment benefits Pension And Other Post Employment Benefit Pension and other post employment benefit. Basis of preparation of the Consolidated financial statements Disclosure of basis of preparation of financial statements [text block] Cancellation of shares (in shares) Cancellation Of Treasury Stock, Shares Cancellation Of Treasury Stock, Shares Document Fiscal Period Focus Document Fiscal Period Focus Damages claimed Damages Claimed In Litigation Case Damages Claimed In Litigation Case NPV-at-Risk Net Present Value At Risk NPV-at-Risk measures the impact of changing interest rates on value. The NPV-at-Risk is defined as the outcome of an instantaneous increase and decrease in interest rates from applying currency specific scenarios. Total assets Total assets Assets Assets Contributions to the Single and Local Resolution Funds Contributions to single and local resolution fund The portion of regulatory costs that represents contributions to Single Resolution Fund. Derivative financial instruments to transition to alternative benchmarks Derivative financial instruments to transition to alternative benchmarks [Table Text Block] Derivative financial instruments to transition to alternative benchmarks - Financial assets at fair value through other comprehensive income Proceeds from sales or maturity of financial assets measured at fair value through other comprehensive income, classified as investing activities Associates [domain] Associates [domain] CollVA CollVA [Member] Investment, Name [Domain] Investment, Name [Domain] Credit risk Credit risk [member] Summary of non-trading derivatives Disclosure Of Non Trading Derivatives Designated At Fair Value Through Profit Or Loss [Table Text Block] Disclosure of non-trading derivatives designated at fair value through profit or loss. Additions Issues, fair value measurement, liabilities Share buyback programme authorized Share Buyback Programme Authorized Share Buyback Programme Authorized Types of Interest Rates [Axis] Types of interest rates [axis] Revenue Total revenue Total income Revenue Reconciliation between IFRS-EU and IFRS-IASB Description of accounting policy for reconciliation between IFRS EU and IFRS IASB [Policy Text Block] Description of accounting policy for reconciliation between IFRS EU and IFRS IASB. Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss Entity Address, City or Town Entity Address, City or Town Cash flows: Cashflows [Abstract] Cashflows Debt securities Debt Securities Explanatory [Text Block] Debt Securities Explanatory Subordinated loans Disclosure of borrowings [text block] Share capital Issued capital [member] Disclosure of fair value measurement of assets [abstract] Disclosure of fair value measurement of assets [abstract] Other reserves Other reserves [member] Coupon interest due on financial liabilities Coupon Interest Due On Financial Liabilities Coupon interest due on financial liabilities. Summary of information about key management personnel Disclosure of information about key management personnel [text block] Disclosure Of Market Risk Exposure [Table] Disclosure Of Market Risk Exposure [Table] Entity Emerging Growth Company Entity Emerging Growth Company Derivatives and hedge accounting Disclosure of general hedge accounting [text block] Amortisation and impairment of intangible assets 10 Amortisation and Impairment of Intangible Assets Amortisation and Impairment of Intangible Assets Non-performing loans: outstandings Disclosure of non performing loans [Table Text Block] Disclosure of non-performing loans by economic sector and business lines and geographical area. Reverse repurchase transactions Securities In Reverse Repurchase Transaction [Member] Securities in reverse repurchase transaction. –  Deposits Deposits1 [Member] Deposits1 Pillar 1 requirement Pillar 1 requirement [member] Pillar 1 requirement. Investments in other group companies Opening balance as at 1 January Closing balance Investments in subsidiaries, joint ventures and associates reported in separate financial statements General Industries General Industries [Member] General Industries [Member] Combined interest and FX rate risk Swap contract [member] Right-of-use assets Right-of-use assets [member] Credit Spread (CSO1) Credit spread (bps) Credit spread, measurement input [member] Amortisation Increase (Decrease) Through Amortisation Liabilities Arising From Financing Activities Increase decrease through amortisation liabilities arising from financing activities. Financial Liabilities classified as Level 3 based on unadjusted quoted price Financial Liabilities classified as Level 3 based on unadjusted quoted price inactive markets Financial Liabilities classified as Level 3 based on unadjusted quoted price. IT related expenses (excluding outsourcing and subcontracting) Information Technology Expenses Information Technology Expenses Adjustment of the EU IAS 39 carve-out Reconciliation net result adjustment of EU IAS 39 carve-out Reconciliation net result adjustment of EU IAS 39 carve-out Entity Address, Postal Zip Code Entity Address, Postal Zip Code 6.083% Callable Fixed-to-Floating Rate Senior Notes due 2027 6.083% Callable Fixed-to-Floating Rate Senior Notes due 2027 [Member] 6.083% Callable Fixed-to-Floating Rate Senior Notes due 2027 Audit related fees Auditor's remuneration for other services Market Risk [Line Items] Disclosure of nature and extent of risks arising from financial instruments [line items] Additions Additions other than through business combinations, property, plant and equipment including right-of-use assets Unweighted ECL for all collective provisioned clients in upside scenario Unweighted ECL For All Collective Provisioned Clients In Upside Scenario Unweighted ECL For All Collective Provisioned Clients In Upside Scenario Summary of total unused tax losses carried forward analysed by expiry terms Disclosure Of Net Unused Tax Losses Carried Forward Analysed By Expiry Terms [Text Block] Disclosure of net unused tax losses carried forward analysed by expiry terms. Aging analysis (past due but performing) Aging analysis (past due but performing) explanatory [Table Text Block] Aging analysis (past due but performing) explanatory [Text Block] Taxation Disclosure of income tax [text block] Overview Top up tax to be paid per jurisdiction Current Tax Expense Income Related To Pillar Two Income Taxes [Table Text Block] Current Tax Expense Income Related To Pillar Two Income Taxes Legal proceedings Disclosure of Legal Proceedings Explanatory [Text Block] Disclosure of legal proceedings. Regulatory adjustments additional Tier 1 Additional tier one regulatory adjustments Additional tier one regulatory adjustments Fair value of listed investment Fair value of listed investment Fair value of listed investment. Value to Loan Categorization [Axis] Value to Loan Categorization [Axis] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Securities at amortised cost Financial assets at amortised cost Disclosure of transferred financial assets that are not derecognised in their entirety [abstract] Disclosure of transferred financial assets that are not derecognised in their entirety [abstract] Increase (decrease) through net transfers, financial assets Increase (decrease) through net level one transfers, financial assets Increase (decrease) through net level one transfers, financial assets Fair value of financial liability, attributable to changes in credit risk of liability Increase (decrease) in fair value of financial liability, attributable to changes in credit risk of liability Summary of number of employees Disclosure Of Number Of Employees [Table Text Block] Disclosure of number of employees. Other income [abstract] Other income [abstract] Revaluation reserves credit liability Revaluation reserves credit liability A component of equity representing the accumulated revaluation reserve on the revaluation of credit liability. Summary of investment income Disclosure of Classification of Investment Income Explanatory [Table Text Block] Disclosure of classification of investment income. Interest expense on subordinated loans Interest Expense On Subordinated Loans Interest expense on subordinated loans. Revaluations Revaluation increase (decrease), Investments in associates and joint ventures Revaluation increase (decrease), Investments in associates and joint ventures. Repurchase transactions Receivables Related To Securities in Repurchase Transactions [Member] Receivables related to securities in repurchase transactions [member] Associated liabilities at carrying amount Carrying Amount Of Associated Financial Liabilities Carrying Amount Of Associated Financial Liabilities Number of savings allowances Number Of Savings Allowances Number Of Savings Allowances % of total portfolio Proportion Of Portfolio Percentage The amount of percentage of gross carrying amount of portfolio. Valuation results and net trading income 22 Valuation results and net trading income – of which revaluations and trading income Trading income (expense) Increase In Terminal Growth Rate Increase In Terminal Growth Rate [Member] Increase In Terminal Growth Rate Employee share-based compensation plans Increase (decrease) through share-based payment transactions, equity Revaluation reserve equity securities at fair value through other comprehensive income Disclosure of fair value measurement of equity [text block] Pension and other post-employment benefits [abstract] Disclosure of net defined benefit liability (asset) [abstract] –  Trading derivatives Financial liabilities at fair value through profit or loss that meet definition of held for trading derivatives Financial liabilities at fair value through profit or loss that meet definition of held for trading derivatives. -  hedges of net investments in foreign operations Investment in foreign operations Hedges of net investment in foreign operations [member] 11-13 (BB) BB credit grades [member] BB credit grades. Interest held Percentage of ownership interest Proportion of ownership interest in associate Romanian Leu Romania, New Lei Other net income Disclosure of other operating income (expense) [text block] Net Results IFRS-EU Net Results IFRS-EU [Member] Classes of property plant and equipment [domain] Classes of property, plant and equipment [domain] Entity Address, Country Entity Address, Country Cash and balances with central bank [abstract] Cash and balances with central bank [abstract] Borrowings [abstract] Debt securities in issue [Abstract] Major ordinary share transactions Major ordinary share transactions [member] Euro Euro Member Countries, Euro Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Methods of generation [domain] Methods of generation [domain] Loan loss provisions for guarantees and loan commitments Loan Loss Provisions For Guarantees and Loan Commitments [Member] Loan Loss Provisions For Guarantees and Loan Commitments Valuation Results And Net Trading Income [Line Items] Valuation Results And Net Trading Income [Line Items] Valuation Results And Net Trading Income [Line Items] –  Deferred shares Key management personnel compensation deferred shares Key management personnel compensation deferred shares. Document Annual Report Document Annual Report 4.550% Fixed Rate Senior Notes due 2028 Fixed Rate Senior Notes Due 2028, 4.550 Percent [Member] Actual return on the plan assets Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense Geographical areas [domain] Geographical areas [domain] Facilities Facilities Expenses Facilities Expenses Net Interest Income Disclosure [Line Items] Net Interest Income Disclosure [Line Items] MDA Trigger, total capital MDA Trigger, Total Capital MDA Trigger, Total Capital Reserve of property in own use Reserve of property in own use [Member] A component of equity representing the accumulated portion of gain or loss on property in use. Interest expense using effective interest rate method Total interest expense using effective interest rate method Interest expense using effective interest rate Interest expenses calculated using effective interest method. Commercial Real Estate/ Inflation and interest rate increases Commercial Real Estate / Inflation And Interest Rate Increases Model Time Lag Overlay, Management Adjustments Other liabilities Disclosure of other liabilities [text block] Called from contingent liabilities Called From Contingent Liabilities Called From Contingent Liabilities Tax effect of the adjustment Tax effect of adjustment Tax effect of adjustment. Stage 2 Stage two [Member] This member stands for assets assessed to have experienced a significant increase in credit risk since initial origination or purchase. Adjustment of the EU IAS 39 carve-out Adjustment of EU IAS 39 carve-out Adjustment of EU IAS 39 carve-out Central Governments Central Governments [member] Central Governments [member] Transfers from Level 2 into Level 1 , liabilities Transfers out of Level 2 into Level 1 of fair value hierarchy, liabilities held at end of reporting period Pension costs and other staff-related benefit costs Pension and other staff-related benefits Pension Costs And Other Staff related Benefit Costs Pension costs and other staff-related benefit costs. Disclosure of credit risk exposure [table] Disclosure of credit risk exposure [table] Basis of preparation and material accounting policy information Disclosure of material accounting policy information [text block] Financial impact of increase Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption Other liabilities 16 Other Other liabilities Other liabilities Loans and advances to customers 7 Loans and advances to customers Loans and advances to customers Financial assets classified as Level 3 based on quoted price Financial assets classified as Level 3 based on quoted price Financial assets classified as Level 3 based on quoted price. Issue of shares (in shares) Increase (decrease) in number of shares outstanding Dividends received Dividends received, classified as operating activities Price (%) Price [member] Price. Remeasurement of the net defined benefit asset/liability Income tax relating to remeasurements of defined benefit plans included in other comprehensive income Condensed Financial Statements [Table] Condensed Financial Statements [Table] Initially applied IFRSs [axis] Initially applied IFRSs [axis] Options outstanding, Opening balance (in shares) Options outstanding, Closing balance (in shares) Number of share options outstanding in share-based payment arrangement Dividend income Dividends recognised for investments in equity instruments designated at fair value through other comprehensive income, held at end of reporting period Valuation techniques used in fair value measurement [axis] Valuation techniques used in fair value measurement [axis] Other provisions Other Provision [member] Other provision. Interest expense on debt securities in issue Interest expense on debt instruments issued Summary of non-trading derivatives by type Disclosure of fair value on non trading derivatives explanatory [Table Text Block] Disclosure of fair value on non trading derivatives explanatory. Earnings per share basic [abstract] Basic earnings per share [abstract] Legal reserve Legal Reserve Legal Reserve Net fee and commission income Disclosure of fee and commission income (expense) [text block] Net interest income 20 Net interest income Net interest income Interest income (expense) Entity Filer Category Entity Filer Category ING DiBa AG ING DIBAAG [Member] ING DIBAAG. Payment Services Payment Services Fee And Commission Expense Payment Services Fee And Commission Expense Revaluation recognised in other comprehensive income during the period Gains (losses) recognised in other comprehensive income including exchange differences, fair value measurement, assets Disclosure Of Assets By Contractual Maturity Schedule [Table] Disclosure of maturity analysis for financial assets held for managing liquidity risk [table] Average foreign exchange rate Average foreign exchange rate Interest income Interest cost Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income) Transfers out of Level 3 Transfers out of Level 3 of fair value hierarchy, liabilities Classes of ordinary shares [domain] Classes of ordinary shares [domain] Remeasurements Revaluation increase (decrease), property, plant and equipment including right-of-use assets Nominal amount of hedging instrument Nominal amount of hedging instrument Total income Total operating income Income Profit (loss) from operating activities Disclosure Of Significant Investments In Principal Subsidiaries Associates And Joint Ventures [Table] Disclosure Of Significant Investments In Principal Subsidiaries Associates And Joint Ventures [Table] Disclosure of significant investments in principal subsidiaries associates and joint ventures. Interest income on non-trading derivatives (no hedge accounting) Interest Income On Non Trading Derivatives Not Qualified For Hedge Accounting Interest income on non trading derivatives not qualified for hedge accounting. Change in fair value of assets and liabilities (hedged items) Gains (Losses) On Change In Fair Value Of Hedged Items Gains (Losses) On Change In Fair Value Of Hedged Items Net Interest Income Disclosure [Table] Net Interest Income Disclosure [Table] Audit fees Auditor's remuneration for audit services Entity Address, Address Line One Entity Address, Address Line One FVA FVA [Member] Schedule of customer deposits by type Disclosure of Deposits from Customers by Type Explanatory [Table Text Block] Disclosure of deposits from customers by Type. Summary of changes in share awards Disclosure Of Number And Weighted Average Grant Fair Value Prices Of Share Awards [Table Text Block] Disclosure Of Number And Weighted Average Grant Fair Value Prices Of Share Awards [Text Block] Repayment of deposits from banks Repayment Of Deposits From Banks Repayment Of Deposits From Banks Amounts not subject to enforceable netting arrangements Financial Assets, Amounts Not Subject To Enforceable Netting Arrangements Financial Assets, Amounts Not Subject To Enforceable Netting Arrangements Interest bearing Interest Bearing On Deposits From Banks The amount of Interest bearing deposits from banks. – non-cash items in Result before tax Other adjustments to reconcile profit (loss) Purchased under staff share and stock option plans (in shares) Increase Through Share-based Payment Transactions, Shares Increase Through Share-based Payment Transactions, Shares Summary forborne portfolio Disclosure of forborne assets explanatory [Table Text Block] Disclosure of forborne assets. Lending and investment Lending and investment [Member] Expected contributions to pension plans Estimate of contributions expected to be paid to plan for next annual reporting period Provisions Disclosure of provisions [text block] Performing Exposure Performing Exposure [Member] Performing Exposure [Member] Disclosure of financial assets [table] Disclosure of financial assets [table] Title and Position [Domain] Title and Position [Domain] Financial guarantees and other commitments Financial Guarantees And Other Commitments Financial Guarantees And Other Commitments ABS portfolio ABS Portfolio [Member] ABS portfolio. Increase (decrease) through net level three transfers, financial assets Increase (decrease) through net level three transfers, financial assets Increase (decrease) through net level three transfers, financial assets Information about credit quality of financial assets Information About Credit Quality Of Financial Assets [Table Text Block] Information About Credit Quality Of Financial Assets Czech Republic CZECHIA Germany GERMANY Repayments of debt securities Redemption of subordinated loans Repayments of bonds, notes and debentures Hedged items [axis] Hedged items [axis] Condensed Statement of Income Captions [Line Items] Condensed Statement of Income Captions [Line Items] Additions Additions in Investments in associates and joint ventures Additions in investments in associates and joint ventures. Regulatory costs Regulatory Costs Regulatory costs. Trading portfolios, netting Trading Portfolios, Netting [Member] Trading Portfolios, Netting Type of credit risk cover [member] Type of Credit Risk Cover [Domain] Type of Credit Risk Cover Other income not subject to tax Tax Effect Of Other Income Not Subject To Tax Tax effect of other income not subject to tax. Unrealised revaluations Movement for the year Increase (decrease) in equity DOP recognised in the statement of profit or loss during the period: Fair Value Measurement, Deferred Day One Profit Or Loss Reserve, Profit (Loss) Recognised Fair Value Measurement, Deferred Day One Profit Or Loss Reserve, Profit (Loss) Recognised Transfer of financial assets, assets pledged and received as collateral Disclosure of transfers of financial assets [text block] Brazil BRAZIL Summary of staff expenses Disclosure Of Staff Expense Including Pension And Other Staff Related Cost [Table Text Block] Disclosure of staff expense including pension and other staff related cost. Actuarial assumption of mortality rates Actuarial assumption of mortality rates [member] Financial liabilities designated as at fair value through profit or loss Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] Debenture loans Debenture Loans [Member] Debenture Loans Disclosure of key management personnel compensation [Line Items] Disclosure of transactions between related parties [line items] Disclosure of fair value measurement of assets [line items] Disclosure of fair value measurement of assets [line items] Food, Beverages & Personal Care Food, Beverages & Personal Care [Member] Food, Beverages & Personal Care [Member] Amortisation Amortisation expense Other comprehensive income Other comprehensive income [abstract] Disclosure of detailed information about hedging instruments [line items] Disclosure of detailed information about hedging instruments [line items] Canada CANADA Baseline scenario Baseline Scenario [Member] An external consensus forecast is assembled from key sources, including HM Treasury, Bloomberg and the Urban Land Institute. Switzerland SWITZERLAND Classes of share capital [domain] Classes of share capital [domain] Financial liabilities at fair value, class Financial liabilities at fair value, class [member] Summary of principal subsidiaries, investments in associates and joint ventures Disclosure Of Principal Subsidiaries Investments In Associates And Joint Ventures [Table Text Block] Disclosure Of Principal Subsidiaries Investments In Associates And Joint Ventures [Text Block] – FX forwards and Cross currency swaps FX forwards and cross currency swaps [Member] FX forwards and cross currency swaps [Member] Summary of changes in the net defined benefit assets/liability remeasurement reserve Disclosure of amounts recognised directly in other comprehensive income equity explanatory [Table Text Block] Disclosure of amounts recognised directly in other comprehensive income equity explanatory. Other liabilities Description Of Accounting Policy For Other Liabilities Explanatory [Policy Text Block] The description of accounting policy for other liabilities. China CHINA Contact Personnel Email Address Contact Personnel Email Address Price (price per share) Price, Non-Percent [Member] Increase In Discount Rate Increase In Discount Rate [Member] Increase In Discount Rate Australia AUSTRALIA Disclosure of transferred financial assets that are not derecognised in their entirety [table] Disclosure of transferred financial assets that are not derecognised in their entirety [table] Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, assets Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, assets Austria AUSTRIA Classes of financial liabilities [axis] Classes of financial liabilities [axis] Classes of financial liabilities Classes of financial liabilities [domain] Amount Profit (loss), attributable to ordinary equity holders of parent entity [abstract] Other Miscellaneous Other Assets Miscellaneous other assets. Automotive Automotive [Member] This member represents automotive industrial sector. Industry composition percentage Industry composition percentage The value for Industry composition percentage. – Non-trading derivatives Non-trading derivative Bulgaria BULGARIA Plan assets Plan assets [member] Belgium BELGIUM Lease liabilities Lease liabilities Financial Assets Disclosure of financial assets [abstract] Derivatives at rates Derivatives At Rates [Member] Derivatives at rates. Equity securities Investments in equity instruments designated at fair value through other comprehensive income [domain] Net result Profit (loss) from continuing operations Liabilities arising from financing activities [domain] Liabilities arising from financing activities [domain] Trading assets Trading assets, loans and receivables Financial assets at fair value through profit or loss, classified as held for trading, category [member] Purchase of assets Purchases, fair value measurement, assets 5.550% Callable Fixed-to-Floating Rate Senior Notes due 2035 5.550% Callable Fixed-to-Floating Rate Senior Notes due 2035 [Member] 5.550% Callable Fixed-to-Floating Rate Senior Notes due 2035 Diluted earnings Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share United Arab Emirates UNITED ARAB EMIRATES Callable Floating Rate Senior Notes due 2029 Callable Floating Rate Senior Notes due 2029 [Member] Callable Floating Rate Senior Notes due 2029 Share capital Beginning balance, amount Ending balance, amount Issued capital Financial instruments Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities Disclosure of reconciliation of liabilities arising from financing activities [line items] Disclosure of reconciliation of liabilities arising from financing activities [line items] Unused tax losses carried forward not recognised as a deferred tax asset No deferred tax asset recognised Unused tax losses for which no deferred tax asset recognised Other Other intangible assets [member] Valuation Results and Net Trading Income [Abstract] Valuation results and net trading income [Abstract] Valuation results and net trading income. Exchange rate differences and other Income tax relating to exchange differences on translation of foreign operations included in other comprehensive income Categories of financial assets [axis] Categories of financial assets [axis] Exchange rate differences Increase (decrease) through net exchange differences, deferred tax liability (asset) Expense recognition Description Of Accounting Policy For Recognition Of Expense Explanatory [Policy Text Block] The description of the entity's accounting policy for recognition of expense. Beginning balance, ordinary shares (in shares) Ending balance, ordinary shares (in shares) Number of shares outstanding Other Other Financial Instrument [Member] Other Financial Instrument Types of financial liabilities [domain] Types of financial liabilities [domain] Products and services [axis] Products and services [axis] Financial liabilities Financial liabilities Financial liabilities Real GDP Gross Domestic Product Economic Variable [Member] This member stands for Gross Domestic Product, a key historic macroeconomic core variable. The GDP is compared against the forecast paths of the probability weights for each scenario, demonstrating the highest annual growth in the Upside scenarios; 5 year average in Baseline; lowest annual growth in Downside scenarios. - ROU other leases Other property, plant and equipment [member] Taxation 34 Taxation Effective tax amount Tax expense (income) Disclosure of other provisions [abstract] Disclosure of other provisions [abstract] –  Cash and balances with central banks Cash and balances with central banks [Member] This member stands for the amount of cash and bank balances held at central banks. Hong Kong HONG KONG 12-month expected credit losses 12-month expected credit losses [member] – securities at amortised cost Proceeds from sales or maturity of financial instruments, classified as investing activities Equity/Equity correlation Equity And Equity Correlation One [Member] Equity and equity correlation. Document Transition Report Document Transition Report Hungary HUNGARY Cash and balances with central banks Cash and bank balances at central banks Cash and bank balances at central banks Net defined benefit asset/liability, discount rates Weighted Average Basic Actuarial Assumption of Discount Rates on Net Defined Benefit Asset or Liability Weighted average basic actuarial assumption of discount rates on net defined benefit asset or liability. Disclosure of defined benefit plans [line items] Disclosure of defined benefit plans [line items] Disclosure of classes of share capital [line items] Disclosure of classes of share capital [line items] Disclosure of Reconciliation Net Result EU IFRS and IASB IFRS [Abstract] Disclosure of Reconciliation Net Result EU IFRS And IASB IFRS [Abstract] Disclosure Of Reconciliation Net Result Eu Ifrs And Iasb Ifrs [abstract] Equity securities Investments in equity instruments designated at fair value through other comprehensive income [member] Maturity [axis] Maturity [axis] United Kingdom UNITED KINGDOM Schedule of trading liabilities by type Disclosure of financial instruments held for trading [text block] Goodwill Goodwill Sectoral Systemic Risk buffer (s-SyRB) Sectoral Systemic Risk buffer (s-SyRB) [Member] Sectoral Systemic Risk buffer (s-SyRB) Significant investments in associates [axis] Associates [axis] Positive fair value movements from using reasonable possible alternatives Positive Fair Value Movements Using Possible Alternatives Positive fair value movements using possible alternatives. Document Type Document Type Reserve of gain loss FVOCI Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member] Spain SPAIN Fee and commission expense Total fee and commission expenses Fee and commission expense Callable Floating Rate Senior Notes due 2027 Callable Floating Rate Senior Notes due 2027 [Member] Debenture loans Notes and debentures issued Risk variables [axis] Risk variables [axis] Profit or loss [abstract] Profit or loss [abstract] Transfers Increase (decrease) through transfers, financial assets Current accounts / Overnight deposits Customer Deposits, Current Accounts And Overnight Deposits Customer Deposits, Current Accounts And Overnight Deposits Equity/FX correlation Equity And Foreign Exchange Correlation [Member] Equity and foreign exchange correlation. Summary of net interest income Disclosure of classifications of interest income expense explanatory [Table Text Block] Disclosure of classifications of interest income expense. Amount of risk neutral designed financial assets Amount of risk neutral designed financial assets Amount of financial assets designed to be fully neutral. Rest of Europe Rest of Europe [Member] Rest of Europe. Costs payable Trade payables Total reportable collective provisions Expected credit losses collectively assessed [member] Valuation techniques and range of unobservable inputs Disclosure of significant unobservable inputs used in fair value measurement of assets [text block] Types of share-based payment arrangements [domain] Types of share-based payment arrangements [domain] Financial institutions' bonds Financial Institutions Bonds [Member] Financial institutions bonds. Adjusted balance Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Effect of dilutive instruments: Disclosure of instruments with potential future dilutive effect not included in calculation of diluted earnings per share [abstract] France FRANCE Shareholders’ equity (parent) In accordance with IFRS-IASB Shareholders’ equity Shareholders’ equity (parent) Equity attributable to owners of parent Net interest received (paid) classified as operating activities Net Interest Received (Paid) Classified As Operating Activities Net Interest Received (Paid) Classified As Operating Activities TLTRO Targeted Longer Term Refinancing [Member] Components of equity [axis] Components of equity [axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Disclosure of financial liabilities [line items] Disclosure of financial liabilities [line items] Disclosure of detailed information about borrowings [abstract] Subordinated liabilities [abstract] Staff expenses Disclosure of employee benefits expense [Text Block] The entire disclosure of employee benefits expense. Overall portfolio percent Overall Portfolio Percent Overall Portfolio Percent Loans and advances to banks Disclosure of loans and advances to banks [text block] 3.950% Fixed Rate Senior Notes due 2027 Fixed Rate Senior Noes Due 2027, 3.950 Percent [Member] Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items] Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items] Other assets Other current assets Categories of related parties [domain] Categories of related parties [domain] –  Deferred tax liabilities Deferred Tax Liabilities [Member] Deferred tax liabilities. Loans and advances to banks Cash And Cash Equivalents Deposits From Banks Or Loans And Advances To Banks Cash and cash equivalents deposits from banks or loans and advances to banks. 4.050% Fixed Rate Senior Notes due 2029 Fixed Rate Senior Notes Due 2029, 4.050 Percent [Member] Exchange rate differences Increase (decrease) through net exchange differences, property, plant and equipment including right-of-use assets Accumulated amount of remeasurements recognised directly in Other comprehensive income (equity), before tax Reserve Of Remeasurements Of Defined Benefit Plans, Before Tax Reserve Of Remeasurements Of Defined Benefit Plans, Before Tax Auditor Location Auditor Location Increase (decrease) of net interest income Increase (Decrease) Of Net Interest Income Increase (Decrease) Of Net Interest Income Disclosure of material accounting policies [line items] Disclosure of material accounting policies [Line Items] Disclosure of significant accounting policies [line items] Other countries Other Countries [member] Other countries. Sri Lanka SRI LANKA 20-22 (D) Default Credit Grade [Member] Default Credit Grade. Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] –  Trading liabilities Adjustments for increase (decrease) in financial liabilities held for trading Interest expense on deposits Interest paid, TLTRO III Interest Expense On Deposits From Banks And Customers Interest Expense On Deposits From Banks And Customers Luxembourg LUXEMBOURG Supplemental cash flow information Supplemental Cash Flow Information1 [Abstract] Supplemental Cash Flow Information1 Basic earnings (in shares) Weighted average number of ordinary shares used in calculating basic earnings per share 1.726% Callable Fixed-to-Floating Rate Senior Notes due 2027 1.726% Callable Fixed-to-Floating Rate Senior Notes due 2027 [Member] Disclosure of significant unobservable inputs used in fair value measurement of assets [line items] Disclosure of significant unobservable inputs used in fair value measurement of assets [line items] Total investment and other income Total investment and other income Investment And Other Income Investment and other income. Cancelled Share buyback programme (in shares) Share Buyback Programme, Cancelled, Shares Share Buyback Programme, Cancelled, Shares Amounts to be settled Items in course of collection from other banks Equity securities Trading equity securities [member] Financial assets, increase in provisions Financial assets, increase in provisions Financial assets, increase in provisions –  Upfront shares Key management personnel compensation, share-based payment – Other interest derivatives Other interest derivatives [Member] This member stands for other interest rate derivative financial instruments. Gains (losses) on financial assets at fair value through profit or loss Gains (losses) on financial assets at fair value through profit or loss IAS 29 IAS 29 [Member] IAS 29 5–7 (A) Internal Credit Grade three [member] External credit grade three. Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Borrowing facility Other borrowings Defined benefit plans [domain] Defined benefit plans [domain] Netherlands Country of domicile [member] Information on geographical areas Disclosure of Detailed Information About Geographical Areas [Text Block] The entire disclosure of information about geographical areas. Tier 1 minimum requirements Minimum Tier One Capital Requirement Minimum Tier One Capital Requirement - Data processing equipment Computer equipment [member] South Korea South Korea KOREA, REPUBLIC OF Past service cost Increase (decrease) in net defined benefit liability (asset) resulting from past service cost Subordinated loans 18 Subordinated loans Subordinated liabilities Expense related in equity settled share based payment arrangements Expense From Equity settled Sharebased Payment Arrangement Expense from equity settled sharebased payment arrangement. - Interim profits not included in CET1 capital Reserved profit not included in common equity tier one capital Reserved profit not included in common equity tier one capital before interim dividend paid. Statement of financial position total Financial Assets, Statement Of Financial Position Financial Assets, Statement Of Financial Position 2028 Expected Credit Losses Sensitivity Year Three Sensitivity of expected credit losses by macroeconomic scenario in year three. -  fair value hedges Fair value hedges [member] Macro Economic Scenario [Axis] Macro Economic Scenario [Axis] Entity Current Reporting Status Entity Current Reporting Status New financial assets originated or purchased Additions Increase through origination or purchase, financial assets Consolidated Entities [Domain] Consolidated Entities [Domain] of which amortisation and exchange differences Amortisation And Exchange Differences [Member] Amortisation And Exchange Differences JAPAN JAPAN Executive Board of ING Groep N.V. Key management personnel Key management personnel of entity or parent [member] Share of associates, joint ventures and other reserves Share of associates, joint ventures and other reserves [Member] This member represents share of associates, joint ventures and other reserves. Summary of segments banking Disclosure of products and services [text block] Performing not past due Performing not past due [Member] Interest received Interest Income Received From Related Parties Interest Income Received From Related Parties Financial assets with contractual cash flows modified during reporting period while loss allowance measured at lifetime expected credit losses, modification gain (loss) Financial assets with contractual cash flows modified during reporting period while loss allowance measured at lifetime expected credit losses, modification gain (loss) Financial assets modified Disclosure of Financial assets modified since initial recognition [Table Text Block] Tabular disclosure of financial assets modified during the period since initial recognition. Non-performing exposure Non-performing exposure [member] Non-performing exposure [member] Change in average threshold ratio Increase (Decrease) In Average Threshold Ratio Increase (Decrease) In Average Threshold Ratio Increase In Cash Flows Increase In Cash Flows [Member] Increase In Cash Flows Interest income on non-trading derivatives (hedge accounting) Interest income on non-trading derivatives (hedge accounting) IFRS9 Interest income on non trading derivatives qualified for hedge accounting including changes resulting from IFRS 9. Transportation & Logistics Transportation and logistics [member] Transportation and logistics [member] Current Fiscal Year End Date Current Fiscal Year End Date Ireland IRELAND Level of price index Level of price index Indonesia INDONESIA Dividend per ordinary share paid (in EUR per share) Dividends paid, ordinary shares per share Regulatory adjustments Regulatory adjustments Regulatory adjustments Changes in fair value related to changes in own credit risk for financial liabilities designated at fair value through profit or loss Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability Credit impaired Financial instruments credit-impaired [member] Certain deferred tax assets Deferred tax asset when utilisation is dependent on future taxable profits in excess of profits from reversal of taxable temporary differences and entity has suffered loss in jurisdiction to which deferred tax asset relates Disclosure of detailed information about borrowings [line items] Disclosure of detailed information about borrowings [line items] Available Total capital Capital1 The amount of total capital as defined in the regulations. Italy ITALY MDA Trigger, CET1 MDA Trigger, CET1 MDA Trigger, CET1 Retail Belgium Retail Belgium [member] Retail Belgium. Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Disclosure of Other Operating Expense [Abstract] Other operating expenses [Abstract] Disclosure of other operating expense. Loans and advances to customers Disclosure of loans and advances to customers [text block] Change in fair value of the credit derivatives for the current year 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 Financial assets Opening balance as at 1 January Closing balance Financial assets Financial assets Financial assets Financial assets Philippines PHILIPPINES Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [text block] Weighted average grant date fair values, Granted (in eur per share) Weighted average exercise price of share options granted in share-based payment arrangement Percentage of notional amounts of hedging instruments Percentage of notional amounts of hedging instruments Retail Challengers & Growth Markets Retail Challengers & Growth Markets [member] Retail Challengers & Growth Markets. Poland POLAND Portugal PORTUGAL Average rate of hedging instrument Average rate of hedging instrument Issued share capital, ordinary shares (in shares) Number of shares issued Commitments Disclosure of contingent liabilities [text block] Temporary Difference Unused Tax Losses And Unused Tax Credits [Member] Temporary difference, unused tax losses and unused tax credits [domain] Accumulated depreciation Accumulated amortisation Accumulated depreciation and amortisation [member] Retained earnings Unappropriated results Retained earnings [member] 1 to 2 years More than 1 year but less than 2 years Later than one year and not later than two years [member] Residential mortgages Residential mortgages [Member] Residential mortgages. Dividends Dividends recognised as distributions to owners of parent Internal credit grades [domain] Internal credit grades [domain] Discount rate (cost of equity) Discount rate used in current estimate of value in use IFRS 9 IFRS 9 [member] 4.017% Callable Fixed-to-Floating Rate Senior Notes due 2028 4.017% Callable Fixed-to-Floating Rate Senior Notes due 2028 [Member] 4.017% Callable Fixed-to-Floating Rate Senior Notes due 2028 Benefits paid Benefits paid Decrease (increase) in net defined benefit liability (asset) resulting from payments from plan Receivables from group companies Current receivables due from associates Capitalised expenses Increase (decrease) through capitalised expenses intangible assets and goodwill Increase decrease through capitalised expenses intangible assets and goodwill. Financial assets at fair value, class Financial assets at fair value, class [member] Interest income on financial assets at fair value through OCI Interest revenue for financial assets measured at fair value through other comprehensive income Covered bonds Covered bond [member] This member respresents covered bonds. Entitys Total For External Credit Grades [Member] External credit grades [domain] Pillar 2 requirement Pillar 2 requirement [member] Pillar 2 requirement [member] Categories of financial assets [domain] Categories of financial assets [domain] Dividend per ordinary share Disclosure of dividends [text block] Swaption Options On Interest Rate Swap Contract [Member] Options On Interest Rate Swap Contract Total Valuation Adjustments Total Of Model Reserves [Member] Total Of Model Reserves Summary of financial liabilities at fair value through profit or loss Disclosure Of Financial Assets And Liabilities At Fair Value Through Profit Loss [Table Text Block] The entire disclosure of financial assets and liabilities at fair value through profit loss. Common equity Tier 1 ratio Common equity tier one capital ratio1 Common equity tier one capital ratio Depreciation and impairment of property and equipment 9 Depreciation and Impairment of Property and Equipment Depreciation and Impairment of Property and Equipment Liabilities and off-balance sheet commitments by maturity Disclosure of Liabilities by Maturity [Text Block] Disclosure of liabilities by maturity. Changes in equity [abstract] Changes in equity [abstract] 11–13 (BB) Internal Credit Grade five[member] internal credit grade five. Netherlands NETHERLANDS Interest income on loans Interest Income On Loans To Customers And Banks, Cash Balances And Negative Interest On Liabilities Interest Income On Loans To Customers And Banks, Cash Balances And Negative Interest On Liabilities Opening balance Closing balance Opening balance as at 1 January Closing balance Net defined benefit liability (asset) Not credit-impaired Financial instruments not credit-impaired [member] Maturity Beyond December December 2027 Maturity Beyond December December 2027 [Member] Maturity Beyond December December 2027 Share awards, Forfeited (in shares) Number of share options forfeited in share-based payment arrangement Share buyback programmes, cancellation of shares Cancellation of treasury shares Disclosure Of Financial Instrument Exposure [Table] Disclosure Of Financial Instrument Exposure [Table] Global GDP increase Global GDP Rate Increase (Decrease) Global GDP Rate Increase (Decrease) Funded Status Surplus (deficit) in plan Share buyback programmes, commitment Share Buyback Programme, Committment Share Buyback Programme, Committment Valuation results Valuation Gain (Loss) Valuation Gain (Loss) Increase in business lending outstanding Increase in business lending outstandings Increase in business lending outstandings Natural Resources Natural resources [Member] Natural resource. Contact Personnel Name Contact Personnel Name Share buyback programmes, repurchases of shares Purchase of treasury shares Hedging instrument, liabilities Hedging instrument, liabilities Total capital ratio Capital ratio Capital ratio Unissued share capital, ordinary shares (in shares) Unissued shares, number Number of unissued shares. Securitisations Securitisations [member] Trading and Non-trading Trading and Non-trading [Member] This member represents tranding and non trading assets. Tax effect of the adjustment Reconciliation net result tax effect of adjustment Reconciliation net result tax effect of adjustment Customer Deposits, By Customer [Axis] Customer Deposits, By Customer [Axis] Customer Deposits, By Customer Schedule of net fee and commission income Disclosure Of Net Fee And Commission Income Explanatory [Table Text Block] The disclosure of net fee and commission income. Mexico MEXICO Share buyback programme, liability Share Buyback Programme, Liability Share Buyback Programme, Liability Change in value of hedging instrument recognised in OCI Gain (loss) on hedge ineffectiveness recognised in other comprehensive income - Derivatives Derivatives [member] Price index movements Price index movements Withholding tax on dividends paid, ordinary shares Withholding Tax On Dividends Paid Withholding tax on dividends paid related to ordinary shares. Reversal of impairments Reversal of impairment loss recognised in profit or loss, intangible assets other than goodwill Parent company condensed statement of financial position Condensed Balance Sheet [Table Text Block] Bid/Offer Bid/Offer [Member] Increase (decrease) in portfolio size Increase (decrease) in exposure to credit risk on loan commitments and financial guarantee contracts Unused tax losses carried forward Unused tax losses [member] 6.50% Perpetual AT1 Contingent Convertible Capital Securities (USD) 6.50% Perpetual AT1 Contingent Convertible Capital Securities (USD) [Member] 6.50% Perpetual AT1 Contingent Convertible Capital Securities (USD) Currency translation reserve Reserve of exchange differences on translation [member] Transaction with ING Group's main associates and joint ventures Disclosure of significant investments in associates and joint ventures [Table Text Block] Disclosure of significant investments in associates and joint ventures ING Belgium S.A./N.V. ING Belgium S.A./N.V. [Member] ING Belgium S.A./N.V. Classes of share capital [axis] Classes of share capital [axis] Disclosure of fair value measurement of liabilities [table] Disclosure of fair value measurement of liabilities [table] Authorised share capital, ordinary shares (in shares) Number of shares authorised Transferred financial assets that are not derecognised in their entirety [domain] Transferred financial assets that are not derecognised in their entirety [domain] Unused tax losses carried forward recognised as a deferred tax asset Unused Tax Losses Carried Forward Recognised As Deferred Tax Asset Unused tax losses carried forward recognised as deferred tax asset. Total equity Balance start of period Balance end of period Total equity Shareholders' equity Equity – Designated as at fair value through profit or loss Designated at fair value through profit or loss Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently Redemptions Early Repayment Of Liabilities Fair Value Early repayment of liabilities fair value. Provisions, contingent liabilities and contingent assets Description of accounting policy for provisions contingent liabilities and contingent assets explanatory [Policy Text Block] The description of accounting policy for provisions contingent liabilities and contingent assets. Bank Of Beijing Bank Of Beijing [Member] Share buybacks and other changes Increase (Decrease) Through Share Buybacks And Other Changes Equity Increase (Decrease) Through Share Buybacks And Other Changes Equity Hedged item affected statement of profit or loss Reclassification adjustments on hedges of net investments in foreign operations, net of tax Savings accounts Customer Deposits, Savings Accounts Disclosure of investments in associates and joint ventures [line items] Disclosure of Investments in Associates and Joint Ventures [Line Items] Disclosure of investments in associates and joint ventures. Share Repurchase Program Four Share Repurchase Program Four [Member] Share Repurchase Program Four Disclosure Of Non Financial Liabilities By Maturity Schedule [table] Disclosure Of Non Financial Liabilities By Maturity Schedule [table] Net present value (NPV) at risk Disclosure of NPV-At-Risk explanatory [Table Text Block] Disclosure of NPV-At-Risk per business line Sub-sovereign, Supranationals and Agencies Sub-sovereign Supranationals and Agencies [Member] Sub sovereign supranationals and agencies. - Other equipment Other Equipment [Member] Interest rate benchmarks [domain] Interest rate benchmarks [domain] Level 2 Level 2 of fair value hierarchy [member] Investment in Van Lanschot Kempen Investment in Van Lanschot Kempen [Member] Investment in Van Lanschot Kempen Subsequent events [abstract] Disclosure of non-adjusting events after reporting period [abstract] Weighted average grant date fair value, Opening balance (in eur per share) Weighted average grant date fair value, Closing balance (in eur per share) Weighted average exercise price of share options outstanding in share-based payment arrangement Utilities Utilities [member] Utilities. Shareholders of the parent Basic earnings Net result Profit (loss), attributable to owners of parent Loans and advances to customers – Loans and advances to customers Loans and Advances to Customers [Member] Loans and advances to customers. Modification gains and losses on restructured financial assets Modification Gains And Losses On Restructured Financial Assets [Member] Promotional and clients acquisition costs Promotional and Client Acquisition Costs Promotional and Client Acquisition Costs Disclosure Of Capital Management [Line Items] Disclosure Of Capital Management [Line Items] Other changes Increase (decrease) through transfers and other changes, other provisions Hyperinflation accounting Description Of Accounting Policy For Hyperinflation [Policy Text Block] Description Of Accounting Policy For Hyperinflation Management Board Banking Management Board Of I N G Bank NV [member] Management board of ING Bank NV. ECL from management adjustments Expected Credit Losses From Managment Adjustments [Member] Expected Credit Losses From Managment Adjustments Transfers Increase (decrease) through transfers, property, plant and equipment including right-of-use assets Interest income using effective interest rate method Total interest income using effective interest rate method Interest revenue calculated using effective interest method -  cash flow hedges –  cash flow hedges (ineffective portion) Cash flow hedges Cash flow hedges [member] Investments In Principal Subsidiaries Associates And Joint Ventures [Abstract] Investments in associates and joint ventures [Abstract] Financial liabilities at fair value through profit or loss Financial liabilities Financial liabilities measured at fair value Financial liabilities at fair value through profit or loss Reconciliation of average effective tax rate and applicable tax rate [abstract] Reconciliation of average effective tax rate and applicable tax rate [abstract] Share of associates and joint ventures and other Reserve From Share of Changes in Equities of Associates and Joint Venture Reserve From Share of Changes in Equities of Associates and Joint Venture Expenses by nature [abstract] Expenses by nature [abstract] Deferred tax assets 34 Deferred tax assets Sensitivity analysis for credit risk Sensitivity Analysis for Credit Risk [table text block] Non-controlling interests Non-controlling interests [member] Non-controlling interests Comprehensive income, attributable to non-controlling interests Document Accounting Standard Document Accounting Standard Opening balance after adjustment, cumulative effect at date of initial application Opening balance after adjustment, cumulative effect at date of initial application [member] Credit (Debt securities, Loans, structured notes, credit derivatives) Credit Debt Securities Loans Structured Notes Credit Derivatives [Member] Credit (Debt securities, Loans, structured notes, credit derivatives). Deposits from banks Current Deposits From Banks Current Deposits From Banks ING Bank A.S. ING Bank AS [Member] ING Bank AS. Percentage of volume increase Percentage Of Volume Increase (Decrease) Percentage Of Volume Increase (Decrease) Business lending Business Lending [Member] Financial assets that have been derecognised Disposals and redemptions Decrease through derecognition, financial assets Remeasurements: Actuarial gains and losses arising from changes in financial assumptions Actuarial gains and losses arising from changes in financial assumptions Actuarial gains and losses arising from changes in financial assumptions Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions Summary of changes in investments in associates and joint ventures Disclosure of change in investments in associates and joint ventures [text block] Disclosure of change in investments in associates and joint ventures. Disclosure of detailed information about financial instruments [line items] Disclosure of detailed information about financial instruments [line items] Undrawn commitments Undrawn commitments [Member] The member stands for commitments not included in credit outstandings. Disclosure of shares and stock options to key management Disclosure Of Shares And Stock Options To Key Management Personnel [Table Text Block] Disclosure of shares and stock options to key management personnel. –  Loans and advances to customers Adjustments for decrease (increase) in loans and advances to customers Disposals Decrease Through Disposal Financial Assets Decrease Through Disposal Financial Assets Portfolio management Portfolio and other management fee income Legal Entity [Axis] Legal Entity [Axis] Dividends and other distributions Cash dividend paid Dividends recognised as distributions to owners1 Dividends recognised as distributions to owners1 Net result Result for the year Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Interest expense on non-trading derivatives (no hedge accounting) Interest Expense On Non Trading Derivatives Not Qualified For Hedge Accounting Interest expense on non trading derivatives not qualified for hedge accounting. Interest rate (%) Interest Rate [Member] Actuarial assumption of discount rates Actuarial assumption of discount rates [member] Japanese Yen Japan, Yen Disclosure of detailed information about hedged items Disclosure of detailed information about hedged items [text block] Disclosure of financial liabilities [table] Disclosure of financial liabilities [table] Disclosure Of Legal Proceedings [Table] Disclosure Of Legal Proceedings [Table] Disclosure of legal proceedings of which release Release To Profit (Loss) [Member] Release To Profit (Loss) ING Belgium Residential Pandbrieven Programme ING Belgium Residential Pandbrieven Programme [Member] ING Belgium Residential Pandbrieven Programme Remeasurements: Actuarial gains and losses arising from changes in demographic assumptions Actuarial gains and losses arising from changes in demographic assumptions Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions of which sold or repledged at fair value Collateral sold or repledged in absence of default by owner of collateral, at fair value Non-performing loans [table] Disclosure of financial assets that are either past due or impaired [table] Geographical Areas [Axis] Geographical areas [axis] Class actions where agreement was reached Number Of Class Actions, Agreement Reached Number Of Class Actions, Agreement Reached No cover No cover [member] No cover. Disclosure of offsetting of financial assets [abstract] Disclosure of offsetting of financial assets [abstract] Intangible assets other than goodwill Intangible assets other than goodwill Changes in the composition of the group and other changes Changes in composition of group and other changes Changes in composition of group and other changes. Total unused tax losses carried forward Unused Tax Losses Carried Forward Unused tax losses carried forward. Amounts not subject to enforceable netting arrangements Financial Liabilities, Amounts Not Subject To Enforceable Netting Arrangements Financial Liabilities, Amounts Not Subject To Enforceable Netting Arrangements Structured notes Structured notes [member] Structured notes. Pre-settlement Pre-settlement1 [member] Pre-settlement1. Segments [domain] Segments [domain] Summary of key management personnel compensation of supervisory board Disclosure Of Key Management Personnel Compensation Of Supervisory Board [Table Text Block] Disclosure of key management personnel compensation of supervisory board. Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash and cash equivalents at end of year Cash and cash equivalents Repurchase transactions and reverse repurchase transactions Description of accounting policy for repurchase and reverse repurchase agreements [text block] – Other investments Proceeds from sales of investments other than investments accounted for using equity method Document Information [Table] Document Information [Table] Disclosure of non-adjusting events after reporting period [line items] Disclosure of non-adjusting events after reporting period [line items] Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities Finance income on net investment in finance lease Finance income on net investment in finance lease Debt securities in issue Debt securities in issue [Member] Debt securities in issue [member] Provisions 15 Provisions Property Property in own use Land and buildings [member] Provisions Before Loan Loss Provisions Before Loan Loss [Member] Provisions Before Loan Loss Total expenses Total expenses Expenses Expenses, by nature Other investment income Other Investment Income Other Investment Income 19 (C) C Credit Grades [Member] C Credit Grades Negative remeasurement Negative remeasurement of reserve [Member] This member represent negative remeasurement of financial asset reserve. Stage 3: Lifetime Expected Credit Losses Stage 3: Lifetime Expected Credit Losses [member] This member represents stage 3, lifetime expected credit losses. Disclosure of Discontinued Operations [line items] Disclosure of analysis of single amount of discontinued operations [line items] Financial liabilities designated at fair value through profit or loss to pay at maturity to the holders Difference between carrying amount of financial liability and amount contractually required to pay at maturity to holder of obligation Product and Service [Domain] Product and Service [Domain] Changes in fair value of own credit risk of financial liabilities at fair value through profit or loss Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income Disclosure Of Loans And Advances To Banks [Table] Disclosure Of Loans And Advances To Banks [Table] Disclosure of loans and advances to banks. Outstandings per line of business Disclosure of credit risk exposure by line of business [Table Text Block] Disclosure of credit risk exposure by line of business [text block] Senior management and other employees Senior Management And Other Employees [Member] Senior management and other employees. Five-year schedule of maturities of debt Disclosure of maturity analysis for non-derivative financial liabilities [text block] Financial assets at fair value through profit or loss 4,6 Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss [abstract] Other staff-related benefits Other Staff Related Benefits, Defined Contribution Plans Other Staff Related Benefits, Defined Contribution Plans Average interest rate on outstanding commitments made on behalf of entity Average Interest Rate On Outstanding Commitments Made On Behalf Of Entity Related Party Transactions Average Interest Rate On Outstanding Commitments Made On Behalf Of Entity Related Party Transactions Other post-employment benefits, discount rates Weighted Average Basic Actuarial Assumption of Discount Rates on Other Post Employment Benefits Weighted average basic actuarial assumption of discount rates on other post employment benefits. Other reserves Revaluation Reserves Revaluation Reserves Disclosure of detailed information about hedging instruments Disclosure of gross carrying value of derivatives designated under fair value hedge accounting Disclosure of detailed information about hedging instruments [text block] Other Other hedging instruments [member] This member stands for other hedging instruments, not separately disclosed by the entity. Interest Rate [(BPV) Interest rate risk Interest rate risk [member] Financial assets at fair value through other comprehensive income [abstract] Financial assets at fair value through other comprehensive income [abstract] Dividend income Dividend income Cash pools Cash pools [member] >5 years More than 5 years Later than five years [member] Classes of financial assets [domain] Classes of financial assets [domain] Amounts to be settled Items in course of transmission to other banks Summary of assets not freely disposable Schedule Of Assets Not Freely Disposable Explanatory Explanatory [Table Text Block] Schedule of assets not freely disposable explanatory explanatory. Intangible assets Disclosure of intangible assets [text block] Financial liabilities Financial liabilities at amortised cost, class [member] – Interest rate swaps Interest rate swap contract [member] Own Credit Adjustments Own Credit Adjustments [Member] Own Credit Adjustments Interest rate benchmarks [axis] Interest rate benchmarks [axis] Disclosure of reconciliation of changes in intangible assets and goodwill [table] Disclosure of reconciliation of changes in intangible assets and goodwill [table] Other cash distributions (in EUR per share) Other Cash Distributions, Per Share Other Cash Distributions, Per Share Interest expense on lease liabilities Interest expense on lease liabilities Impairment Of Financial Assets [Axis] Impairment of financial assets [axis] Significant judgements and critical accounting estimates and assumptions Disclosure of accounting judgements and estimates [text block] Lending Lending [Member] Lending [Member] Retail Netherlands Retail Netherlands [Member] Retail Netherlands. Mont Blanc Mont Blanc [Member] Mont Blanc. Auditor Name Auditor Name Interbank and money market items, net Interbank and Money Market Items, Assets Interbank and Money Market Items, Assets Remeasurements: Return on plan assets excluding amounts included in interest income Return on plan assets net defined benefit liability asset after net interest income Return on plan assets net defined benefit liability asset after net interest income Effect of adjustment after tax Reconciliation net result effect of adjustment after tax EU IAS 39 carve-out Reconciliation net result effect of adjustment after tax EU IAS 39 carve-out Reconciliation net result effect of adjustment after tax EU IAS 39 carve-out. Lower Public Administration Lower Public Administration [Member] Lower Public Administration [Member] Excluding all managment adjustments Excluding All Managment Adjustments [Member] Probability weighting Scenario probability weighting The scenario probability weighting, expressed as a percentage and normalised to equate to 100%. The methodology works such that the baseline (reflecting current consensus outlook) has the highest weight and the weights of adverse and favourable scenarios depend on the deviation from the baseline; the further from the baseline, the smaller the weight. The Net banking currency exposures banking books Increase decrease in net debt through foreign currency exchange exposures Increase (decrease) in net debt through foreign currency exchange exposures. Goodwill Goodwill [member] Effect of adjustment after tax Effect of EU IAS 39 carve-out adjustment after tax Effect of EU IAS 39 carve-out adjustment after tax. Net cash flow from/(used in) operating activities Cash flows from (used in) operating activities Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure of terms and conditions of share-based payment arrangement [line items] Principal subsidiaries, investments in associates and joint ventures Disclosure of interests in other entities [text block] Disclosure of customer deposits [table] Disclosure of customer deposits [table] Schedule disclosing information related to details of customer deposits. Entity [Domain] Entity [Domain] Builders & Contractors Builders & Contractors [member] Builders & Contractors [member] Other Miscellaneous other operating income Most important foreign exchange year-end trading positions Most important foreign exchange year-end trading positions Explanatory [Table Text Block] Disclosure of major trading positions in terms of sensitivities to foreign exchange, interest rate and credit spread risk factor movements. Other covers Other covers [Member] This member stands for Other covers. Document Fiscal Year Focus Document Fiscal Year Focus Adjusted for: Adjustments to reconcile profit (loss) [abstract] Non IFRS 9 eligible assets commitments Non IFRS 9 eligible assets commitments [Member] The member stands for a type of commiments included in credit outstandings. Schedule of maturity of financial and non-financial liabilities Disclosure Of Maturity Of Financial And Non Financial Liabilities Explanatory [Table Text Block] Disclosure Of Maturity Of Financial And Non Financial Liabilities Explanatory [Text Block] Valuation results and net trading income Valuation Results And Net Trading Income [Text Block] Unrecognised compensation cost related to share awards amount Unrecognised Compensation Cost Related To Share Awards Unrecognised Compensation Cost Related To Share Awards Types of interest rates [domain] Types of interest rates [domain] Accumulated revaluation surplus Accumulated Revaluation Surplus [Member] Accumulated Revaluation Surplus Condensed financial information of the parent company Condensed Financial Statements [Text Block] Disclosure of Significant Investments in Principal Subsidiaries, Associates and Joint Ventures [Line Items] Disclosure Of Significant Investments In Principal Subsidiaries Associates And Joint Ventures [Line Items] Disclosure of significant investments in principal subsidiaries, associates and joint ventures. Reconciliation of model ECL to total ECL Reconciliation Of Model ECL To Total ECL Explanatory [Table Text Block] Reconciliation Of Model ECL To Total ECL Changes in IFRS effective 2025 and upcoming changes in IFRS after 2025 Disclosure of expected impact of initial application of new standards or interpretations [text block] Issue of contingent convertible capital securities Issue of convertible instruments Financial guarantees purchased (ING as a holder) Description of accounting policy for financial guarantees [text block] Management Adjustments Management Adjustments Explanatory [Table Text Block] Management Adjustments Explanatory Disclosure of fair value measurement of assets and liabilities [abstract] Fair value of assets and liabilities [abstract] Disclosure of fair value measurement of assets and liabilities. Impairments Impairment loss recognised in profit or loss, property, plant and equipment including right-of-use assets Total compensation Total compensation Key management personnel compensation Disclosure Of Financial Instrument Exposure [Line Items] Disclosure Of Financial Instrument Exposure [Line Items] Non-interest bearing Non interest bearing on deposits from banks The amount of non-interest bearing on deposits from banks. Losses on disposals of investments Losses on disposals of investments –  Other assets Adjustments for decrease (increase) in other assets Belgium & Luxembourg Belgium And Luxembourg [Member] Belgium And Luxembourg [Member] Dividend yield (%) Dividend Yield [Member] Dividend yield. Types of Non-Hedges Non-Hedges [Member] Disclosure of geographical areas [abstract] Disclosure of geographical areas [abstract] Goodwill and other intangible assets Description of accounting policy for intangible assets and goodwill [text block] Local Phone Number Local Phone Number Non-investment grade Grades 11-17 Non-investment grade [member] This member represents internal credit grade: Non-investment grade wholesale. Property and equipment [abstract] Disclosure of detailed information about property, plant and equipment [abstract] Treasury bills and other eligible bills included in securities at AC Treasury Bills And Other Eligible Bills Treasury Bills And Other Eligible Bills Non-derivative financial instruments to transition to alternative benchmarks Non-derivative financial instruments to transition to alternative benchmarks [Table Text Block] Non-derivative financial instruments to transition to alternative benchmarks Executive board Executive Officer [Member] Disclosure of fair value measurement of liabilities [abstract] Disclosure of fair value measurement of liabilities [abstract] 3.88% Fixed Rate Subordinated Tier 2 Notes (EUR) 3.88% Fixed Rate Subordinated Tier 2 Notes (EUR) [Member] 3.88% Fixed Rate Subordinated Tier 2 Notes (EUR) Total debt securities at fair value through other comprehensive income and amortised cost Fair value through other comprehensive income and amortised cost [Member] Fair value through other comprehensive income and amortised cost. Investment, Name [Axis] Investment, Name [Axis] Other liabilities Other liabilities includes current and deferred tax liabilities and provisions Other liabilities includes current and deferred tax liabilities and provisions. Entity Voluntary Filers Entity Voluntary Filers $500,000,000 Callable Floating Rate Senior Notes due 2027 $500m Callable Floating Rate Senior Notes due 2027 [Member] $500m Callable Floating Rate Senior Notes due 2027 Other non-trading derivatives –  other non-trading derivatives Other Non-Trading Derivatives [Member] Other non-trading derivatives. Impairment of associates and joint ventures 8 Impairments Impairment loss recognised in profit or loss Amounts held at central banks Mandatory reserve deposits at central banks Non-performing loans Non Performing Grade [Member] This member represents internal credit grade: Non-performing grade. Schedule of changes in present value of defined benefit obligation and other post-employment benefits Disclosure of additional information about defined benefit plans [text block] Changes in unrealised revaluations Increase (decrease) through changes in fair values, liabilities arising from financing activities Proportion of ownership and interest held by the group Proportion of ownership interest in subsidiary Change in value of hedged item used for calculating hedge ineffectiveness for the period Reserve of exchange differences on translation, continuing hedges Percentage of cover values increase decrease Percentage of Cover values increase decrease Percentage increase or decrease in the Cover value. Entity Registrant Name Entity Registrant Name Basic earnings per ordinary share (in EUR per share) Basic earnings (in EUR per share) Basic earnings (loss) per share Interest bearing Interest bearing customer deposits Interest bearing customer deposits. – Exchange rate differences and other Adjustments for unrealised foreign exchange losses (gains) Measurement [axis] Measurement [axis] Disclosure of customer deposits [line items] Disclosure of customer deposits [line items] Transfer into 12-month ECL (Stage 1) Transfer Into Stage 1 [Member] Transfer Into Stage 1 Public subsidies amount received Public Subsidies Amount Received Public subsidies amount received. Hyperinflation impact, restructuring costs Hyperinflation Impact, Restructuring Costs Hyperinflation Impact, Restructuring Costs Income tax related to components of other comprehensive income [abstract] Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] Consolidated structured entities [axis] Consolidated structured entities [axis] Loans and receivables Loans and receivables mandatorily measured at fair value through profit or loss Loans and receivables, category [member] Percentage saving allowances Individual savings allowance percentage Individual savings allowance percentage. Defined benefit plans Increase (decrease) in net defined benefit liability (asset) Disclosure of credit risk exposure [table] Disclosure of offsetting of financial assets [table] Dutch Covered Bond programmes Covered Bond Programmes [Member] Covered bond company. Off Balance Sheet Commitments Nominal Amount Off Balance Sheet Commitments Nominal Amount Off Balance Sheet Commitments Nominal Amount Commitments Contingent liabilities Estimated financial effect of contingent liabilities Global output percent Global Output Percent Global Output Percent Offsetting financial assets and liabilities Disclosure of offsetting of financial assets and financial liabilities [text block] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Net amount Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements Types of financial assets [axis] Types of financial assets [axis] Non-Bank Financial Institutions Non-Bank Financial Institutions [member] Non-Bank Financial Institutions [member] Ramped unfloored parallel upward Ramped Unfloored Parallel Upward [Member] Ramped Unfloored Parallel Upward [Member] Non-controlling interests Non-controlling interests - Debt securities Debt instruments at FVOCI –  debt securities Debt securities [member] Change in discount rate assumption Change In Discount Rate Change in discount rate. Income recognition Description of accounting policy for Income recognition explanatory [Policy Text Block] The description of accounting policy for Income recognition. Pensions and other post-employment benefits Disclosure of employee benefits [text block] Russian Rouble Russia, Rubles –  Trading assets Adjustments for decrease (increase) in financial assets held for trading All Currencies [Domain] All Currencies [Domain] Reversal of impairments Reversal of impairment loss recognised in profit or loss, property, plant and equipment including right-of-use assets Segment reporting [abstract] Disclosure of operating segments [abstract] Changes in level 3 financial assets Disclosure of fair value measurement of assets [text block] Regulatory adjustments Tier 2 Regulatory adjustments Tier 2 Regulatory adjustments Tier 2 Prepayment rate (%) Constant prepayment rate, measurement input [member] Net investment in finance leases Net investment in finance lease Central bank bonds Central Bank Bonds [Member] Central Bank Bonds Notional value of related credit derivatives Credit derivative, nominal amount Exchange rate differences Increase (decrease) in net defined benefit liability (asset) resulting from changes in foreign exchange rates, net defined benefit liability (asset) Hedging instruments [axis] Hedging instruments [axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Non-trading derivatives - Non-trading derivatives Property plant equipment, revalued Property, plant and equipment, revalued assets, at cost Items that may subsequently be reclassified to the statement of profit or loss: Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] Schedule of other net income Schedule of Other Net Income [Table Text Block] Schedule of Other Net Income Condensed Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table] Non-trading derivatives Non Trading Derivatives Liabilities [member] Non-trading derivatives liabilities. Share plans (in shares) Dilutive effect of all instruments on weighted average number of ordinary shares ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Derivatives at foreign exchange Derivatives At Foreign Exchange [Member] Derivatives at foreign exchange. Other cash distributions Other Cash Distributions Other cash distributions Schedule of changes in fair value of plan assets Disclosure of fair value of plan assets [text block] Classes of employee benefits expense [abstract] Classes of employee benefits expense [abstract] Summary of changes in provisions Disclosure of other provisions [text block] –  Debt securities Debt Securities, Liabilities [Member] Redesignated Redesignated [member] Country Region Country Region Disclosure of credit risk exposure [line items] Disclosure of offsetting of financial assets [line items] Social security costs Social security contributions Addition to loan loss provisions Allowance For Credit Losses Recognised In Profit (Loss) Allowance For Credit Losses Recognised In Profit (Loss) Reorganisation provisions Restructuring provision [member] Share premium Share premium [member] Valuation results on assets and liabilities designated at FVPL (excluding trading) Gains Losses On Assets And Liabilities Designated At Fair Value Through Profit Or Loss Excluding Trading Gains losses on assets and liabilities designated at fair value through profit or loss excluding trading. Summary of audit and non-audit services Disclosure of additional information [text block] Significant unobservable inputs, basis point spread Significant Unobservable Inputs, Basis Point Spread Significant Unobservable Inputs, Basis Point Spread Wholesale Banking Rest of World Wholesale Banking Rest Of World [Member] Wholesale banking rest of world. Shareholders of the parent Comprehensive income, attributable to owners of parent Financial assets pledged Financial assets pledged as collateral for liabilities or contingent liabilities Deposits from banks [Abstract] Deposits from banks [Abstract] Total liabilities Liabilities Liabilities Liabilities Australian Dollar Australia, Dollars IBAL Covered Bond IBAL Covered Bond [Member] IBAL Covered Bond Reconciliation net result under IFRS-EU and IFRS-IASB Disclosure of reconciliation net result explanatory [Table Text Block] The disclosure of reconciliation net result. Gains on disposals of investments Gains on disposals of investments Performing Restructuring Performing Restructuring [Member] Performing Restructuring ING Bank portfolio, outstandings ING Bank portfolio, outstandings [member] ING Bank portfolio, outstandings Disclosure of net defined benefit liability (asset) [line items] Disclosure of net defined benefit liability (asset) [line items] WIBOR Warsaw Interbank Offered Rate (WIBOR) [Member] Warsaw Interbank Offered Rate (WIBOR) Disclosure of detailed information about hedges [table] Disclosure of detailed information about hedges [table] Continuing Operations [abstract] Continuing Operations [abstract] Continuing Operations [abstract] Fair value of assets and liabilities at amortised cost Disclosure Of Fair Value Financial Assets And Liabilities Amortised Cost Explanatory [Table Text Block] Disclosure of fair value financial assets and liabilities amortised cost. Discount rate Discount rate applied to cash flow projections Disclosure of fair value of plan assets [line items] Disclosure of fair value of plan assets [line items] Accounting for Targeted Longer-Term Refinancing Operations Accounting for Targeted Longer-Term Refinancing Operations Explanatory [Policy Text Block] Accounting for Targeted Longer-Term Refinancing Operations Explanatory Fair value of assets and liabilities Disclosure of fair value measurement [text block] Consumer lending performing past due Consumer lending performing past due [Member] Distributed under staff share and stock option plans (in shares) Decrease Through Share-based Payment Transactions, Shares Decrease Through Share-based Payment Transactions, Shares Disclosure of information about consolidated structured entities [table] Disclosure of information about consolidated structured entities [table] Disclosure of nature and extent of risks arising from financial instruments [table] Disclosure of nature and extent of risks arising from financial instruments [table] Asset class category average threshold investment grade Asset Class Category Average Threshold Investment Grade Explanatory [Table Text Block] Asset Class Category Average Threshold Investment Grade Explanatory [Text Block] Audit fees Audit Fees Disclosure [Text Block] Audit Fees Disclosure Lease liabilities Lease liabilities [member] Financial liabilities at fair value through profit or loss 14 Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss [abstract] Weighted average grant date fair value, Forfeited (in eur per share) Weighted average exercise price of share options forfeited in share-based payment arrangement Number of reportable segments Number Of Reportable Segments1 Number Of Reportable Segments Cover type and value Amount By Cover Instruments Mitigate Maximum Exposure To Credit Risk Amount By Cover Instruments Mitigate Maximum Exposure To Credit Risk Capital management Disclosure of detailed information about capital management [Text Block] The disclosure of detailed information about capital management. - Other adjustments Other adjustments to regulatory capital Other adjustments to regulatory capital Realised gains/losses on disposal of debt instruments measured at FVOCI Gain (Loss) on Disposal of Debt Instruments Measured at Fair Value Through Other Comprehensive Income Transfer of financial assets Assets transferred to structured entities, at time of transfer Current taxation Current tax expense (income) Hedging instruments [domain] Hedging instruments [domain] Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] Initially applied IFRSs [domain] Initially applied IFRSs [domain] Maturity/settlement Settlements, fair value measurement, assets Net defined benefit asset/liability Net Defined Benefit assets Liabilities [Member] Net defined benefit assets liabilities. Litigation provisions Litigation Legal proceedings provision [member] Share capital and share premium Classes Of Share Capital And Share Premium [Member] Share capital and share premium. 3 to 4 years More than 3 years but less than 4 years Later than three years and not later than four years [member] Fully covered Fully covered [member] Fully covered. Maturity not applicable Maturity not applicable [member] Other Miscellaneous other operating expense Purchased/sold for trading purposes Increase (Decrease) Through Treasury Share Transactions, Excluding Share-based Payment Transactions Increase (Decrease) Through Treasury Share Transactions, Excluding Share-based Payment Transactions Rest of the world Foreign countries [member] Summary of income tax related to other comprehensive income Disclosure of tax effects of components of other comprehensive income Explanatory [Table Text Block] Disclosure of tax effects of components of other comprehensive income. Lawsuit in favor of ING Lawsuit Finalised In Favor Of ING Lawsuit Finalised In Favor Of ING Transferred assets at carrying amount Fair value of transferred financial assets that are not derecognised in their entirety - Debt securities Debt Securities And Structured Notes [Member] Debt Securities And Structured Notes Disclosure of material accounting policies [table] Disclosure of material accounting policies [Table] Disclosure of significant accounting policies [table] Significant unobservable inputs, price (in EUR per share) Price Significant Unobservable Inputs Price significant Unobservable Inputs Borrowings by name [domain] Borrowings by name [domain] Model Risk Model Risk [Member] TMBThanachart Bank Public Company Limited TMBThanachart Bank Public Company Limited [Member] TMBThanachart Bank Public Company Limited 3-12 months Later than three months and not later than twelve months [member] Later than three months and not later than twelve months. Disclosure of loans and advances to banks [line items] Disclosure Of Loans And Advances To Banks [Line Items] Disclosure of loans and advances to banks. Net Interest Income at Risk [Line Items] Disclosure of risk management strategy related to hedge accounting [line items] Deferred Day One Profit or Loss Deferred Day One Profit Or Loss Reserve [Member] Deferred Day One Profit Or Loss Reserve Deferred tax liabilities 34 Deferred tax liabilities Geographical [Axis] Geographical [Axis] Property, plant and equipment including right-of-use assets [axis] Property, plant and equipment including right-of-use assets [axis] Disclosure of detailed information about hedges [line items] Disclosure of detailed information about hedges [line items] Other provisions, amount expected to be settled within twelve months Other current provisions Treasury shares Treasury shares [member] Investment properties Investment property Net cash flow Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Deferred tax benefit from previously unrecognised amounts Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce deferred tax expense Asia Asia Asia Pacific [Member] Disclosure of subsidiaries [line items] Disclosure of subsidiaries [line items] Changes in level 3 financial liabilities Disclosure of fair value measurement of liabilities [text block] Investment grade Investment Grade [Member] Internal credit grade 1-10 investment. Assets and liabilities [axis] Assets and liabilities [axis] Audit and supervisory fees Audit And Supervisory Fees Audit and non audit services. Remaining financial liabilities classified as level 3 using valuation techniques Remaining financial liabilities classified as level 3 that incorporates certain inputs that are unobservable Remaining financial liabilities classified as level 3 that incorporates certain inputs that are unobservable. Interbank and money market items Interbank and Money Market Items, Liabilities Interbank and Money Market Items, Liabilities Percentage of forborne assets concentrated in main economic sectors Percentage Of Forborne Assets Concentrated In Five Main Economic Sectors Percentage Of Forborne Assets Concentrated In Five Main Economic Sectors Attribution of expenses by nature to their function [domain] Attribution of expenses by nature to their function [domain] Treasury shares Description of accounting policy for treasury shares [text block] O-SII O-SII [Member] Transfers Increase (Decrease) Through Transfer Between Other Reserves And Retained Earnings, Equity Increase (Decrease) Through Transfer Between Other Reserves And Retained Earnings, Equity Property, plant and equipment including right-of-use assets [domain] Property, plant and equipment including right-of-use assets [domain] Other provisions Other provisions Miscellaneous other provisions [member] Result from (disposal of) group companies and participating interests after taxation Profit (loss) from discontinued operations Dividend pay-out ratio Dividend Pay-Out Ratio Dividend Pay-Out Ratio Valuation Results and Net Trading Income [Table] Valuation Results And Net Trading Income [Table] Valuation result and net trading income. Terminal growth rate Growth rate used to extrapolate cash flow projections Customer deposits Deposits From Customers Category [Member] Deposits From Customers Category Schedule of share capital Disclosure of classes of share capital [text block] Disclosure of detailed information about hedging instruments [table] Disclosure of detailed information about hedging instruments [table] Summary of equity Disclosure of Equity [Table Text Block] Disclosure of equity. Provisions Accumulated impairments Accumulated impairment [member] Private Individuals Private Individuals [member] Private Individuals [member] Hyperinflationary accounting, net profit (loss) Hyperinflationary Accounting, Net Profit (Loss) Hyperinflationary Accounting, Net Profit (Loss) Summary of commitments Disclosure of commitments and contingent liabilities [text block] Reserves and other equity interest Disclosure of movement in cash flow hedge reserve Disclosure of reserves within equity [text block] Schedule of changes in property and equipment Disclosure of detailed information about property, plant and equipment [text block] Borrowings, interest rate Borrowings, interest rate Net cash flow from/(used in) investing activities Cash flows from (used in) investing activities 5.066% Callable Fixed-to-Floating Rate Senior Notes due 2031 5.066% Callable Fixed-to-Floating Rate Senior Notes due 2031 [Member] 5.066% Callable Fixed-to-Floating Rate Senior Notes due 2031 Cash generating unit Cash generating unit [member] Cash generating unit. Diluted earnings from continuing operations Profit (loss) from continuing operations attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share Loans and advances Loans And Advances [Member] Loans and advances. Interest Rate And Forex Risk Interest Rate And Forex Risk [Member] Interest Rate And Forex Risk Equity at FVOCI Equity, at fair value through other comprehensive income [Member] Staff expenses 25 Total staff expenses Staff expenses Employee benefits expense Assets Not Freely Disposable [line items] Assets Not Freely Disposable [line items] Assets Not Freely Disposable. Amortisation Amortisation, intangible assets other than goodwill Other derivatives Other Derivatives [Member] Other derivatives. Share awards Share awards [Member] Share awards [Member] Cancelled under Share buyback programme Share Buyback Programme, Cancelled, Amount Share Buyback Programme, Cancelled, Amount Current assets Current assets Other provisions before loan loss Opening balance as at 1 January Closing balance Other Provisions Before Loan Loss Other Provisions Before Loan Loss Lifetime expected credit losses Lifetime expected credit losses [member] Derivative financial assets held for hedging Derivative financial assets held for hedging Securities trading results Trading income (expense) on securities Trading income (expense) on securities. Share Repurchase Program One Share Repurchase Program One [Member] Share Repurchase Program One MDA requirement on leverage ratio MDA Requirement On Leverage Ratio MDA Requirement On Leverage Ratio Disclosure of operating segments [table] Disclosure of operating segments [table] ING Bank Total for all subsidiaries [member] Deposit Guarantee Scheme Deposit Guarantee Scheme [Member] Deposit Guarantee Scheme Discontinued hedges – Discontinued hedges Discontinued hedges [member] This member stands for hedges in relation to hedging relationships for which hedge accounting is no longer applied. 14-16 (B) B Credit Grades [Member] B Credit Grades [Member] ING Bank N.V. ING Bank NV [Member] ING Bank NV. Segments [axis] Segments [axis] Types Of Risks [Axis] Types of risks [axis] Issued capital Issued capital, preference shares Percentage of total outstandings Percentage Of net Outstandings Percentage Of net Outstandings Opening balance at 1 January Closing balance at 31 December Fair Value Measurement, Deferred Day One Profit Or Loss Reserve Fair Value Measurement, Deferred Day One Profit Or Loss Reserve Disclosure of fair value measurement of assets and liabilities. Disclosure of Fair Value Measurement of Assets and Liabilities [Table] Disclosure of fair value measurement of assets and liabilities. – Revaluations Total Valuation Adjustments Adjustments for fair value losses (gains) Other post-employment benefits Other post employment benefits [member] Other post employment benefits. Securitisations Support provided to structured entity without having contractual obligation to do so Interest expense other Miscellaneous interest expense The amount of interest expense incurred during the period related other items. Ramped unfloored parallel downward Ramped Unfloored Parallel Downward [Member] Ramped Unfloored Parallel Downward [Member] Financial assets received as collateral [Line Items] Financial assets received as collateral [Line Items] Weighted average grant date fair value, Vested (in eur per share) Weighted average exercise price of share options exercised in share-based payment arrangement Derivative financial liabilities held for hedging Derivative financial liabilities held for hedging Debt securities at amortised cost Financial assets at amortised cost Financial assets at amortised cost, category [member] Transferred financial assets that are not derecognised in their entirety [axis] Transferred financial assets that are not derecognised in their entirety [axis] Exchange rate differences Gains (losses) recognised in profit or loss on exchange differences, fair value measurement, liabilities Par value (in EUR per share) Par value per share Disclosure of analysis of single amount of discontinued operations [abstract] Realised gains/losses on debt instruments at fair value through other comprehensive income reclassified to the statement of profit or loss Reclassification adjustments on financial assets measured at fair value through other comprehensive income, net of tax Condition of conversion (percent) Condition Of Conversion, Group CET1 ration, Minimum Condition Of Conversion Conclusion Of Litigation Conclusion Of Litigation [Member] Conclusion Of Litigation Additions to contingent liabilities Additions To Contingent Liabilities Additions To Contingent Liabilities Securities lending, equity Equity Securities Lending [Member] Equity securities lending. Business lending performing past due Business lending performing past due [Member] Amendment Flag Amendment Flag Schedule of loans and advances to banks Disclosure Of Loans And Advances To Banks By Geography [Text Block] The disclosure of loans and advances to banks by geography. 5-7 (A) A credit grades [member] A credit grades. Stage 1 Stage one credit impairment [Member] The member stands for intial assessment of credit deterioration. Borrowings Borrowings1 [Member] Borrowings1 Financial assets modified [abstract] Financial assets modified [abstract] Temporary Difference Unused Tax Losses And Unused Tax Credits [Axis] Temporary difference, unused tax losses and unused tax credits [axis] Risk variables [domain] Risk variables [domain] Method of assessment of expected credit losses [domain] Method of assessment of expected credit losses [domain] Supplementary capital Tier 2 bonds Supplementary capital tier 2 bonds Supplementary capital tier 2 bonds Fully-loaded fully-loaded [member] fully-loaded [member] 18 (CC) CC Credit Grades [Member] CC Credit Grades Purchases of treasury shares Proceeds From Sale Or Issue (Purchase) Of Treasury Shares Proceeds From Sale Or Issue (Purchase) Of Treasury Shares 2027 Expected Credit Losses Sensitivity Year Two Sensitivity of expected credit losses by macroeconomic scenario in year two. 1 to 3 months 1 to 3 months Later than one month and not later than three months [member] Authorised share capital, amount Shares Authorized Value Shares authorized value. Net interest and other financial income Interest And Other Income (Expense) Interest And Other Income (Expense) Hedged item, assets Hedged item, assets Capital Requirements [Member] Capital requirements [domain] Summary of trading assets Disclosure of financial assets held for trading [text block] CVA CVA [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Equity volatility (%) Equity volatility [member] Equity volatility. 4.858% Callable Fixed-to-Floating Rate Senior Notes due 2029 4.858% Callable Fixed-to-Floating Rate Senior Notes due 2029 [Member] 4.858% Callable Fixed-to-Floating Rate Senior Notes due 2029 Disclosure of income taxes [line items] Disclosure Of Income Taxes [Line Items] Disclosure of income taxes. Additions Additional provisions, other provisions Derivative financial instruments to transition to alternative benchmarks Derivative Financial Instruments To Transition To Alternative Benchmarks [Member] Deferred tax asset for right of use assets Deferred tax asset for right of use assets The amount of deferred tax assets arise from changes in accounting policy and recognizing right of use assets. Transfer into lifetime ECL credit impaired (Stage 3) Transfer Into Stage 3 [Member] Transfer Into Stage 3 Decrease In Terminal Growth Rate Decrease In Terminal Growth Rate [Member] Decrease In Terminal Growth Rate Increase provision, net Increase (decrease) through net level two transfers, financial assets Increase (decrease) through net level two transfers, financial assets Accumulated impairment losses Accumulated Impairment Losses Accumulated Impairment Losses Currency [Axis] Currency [Axis] Net banking currency exposures banking books Net banking currency exposures banking books Explanatory [Table Text Block] Disclosure of the currency exposures in the banking books for the most important currencies for the FX translation result. Non-subordinated Non-subordinated [member] Non-subordinated. Non-Credit Replacement Guarantees Non-Credit Replacement Guarantees [Member] Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] Credit impairment of financial instruments [domain] Credit impairment of financial instruments [domain] Effective tax rate Average effective tax rate EU IAS 39 carve-out EU IAS 39 Carve-Out [Member] Summary of earnings per ordinary share Earnings per share [text block] IFRS-9 Eligible Financial Assets IFRS-9 Eligible Financial Assets [Member] Option pricing model Option pricing model [member] Lending business Lending Business Fee And Commission Income Lending Business Fee And Commission Income Disclosure of detailed information about property, plant and equipment [table] Disclosure of detailed information about property, plant and equipment [table] Net defined benefit liability - Other liabilities Net defined benefit liability Loans and advances to public authorities Loans to government [member] Weighted average number of ordinary shares outstanding during the period Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract] Transfer into lifetime ECL not credit impaired (Stage 2) Transfer Into Stage 2 [Member] Transfer Into Stage 2 Internal Credit Grades [Axis] Internal credit grades [axis] Change for current year Increase (decrease) in fair value of credit derivatives or similar instruments related to financial assets designated as measured at fair value through profit or loss