Funds entrusted designated and measured at fair value through profit or loss Funds entrusted [member] Funds entrusted. Fee and commission expenses Fee and commission expense [abstract] Total interest expense Total interest expense Interest expense – Property and equipment Purchase of property, plant and equipment, classified as investing activities Indirect taxes Tax expense other than income tax expense Net remeasurement of loan loss provisions Net Remeasurement Of Loan Loss Provision The amount of net remeasurement arising from loan loss provisions. Disclosure of detailed information about business combination [line items] Disclosure of detailed information about business combination [line items] Dividends paid Dividends paid, ordinary shares 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 Loans and advances to banks Levels of fair value hierarchy [domain] Levels of fair value hierarchy [domain] 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] Disclosure Of Other Operating Expense [Table] Disclosure Of Other Operating Expense [Table] Table represents disclosure of other operating expense. 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. Risk weighted assets Risk weighted assets1 Risk weighted assets1 Certain consumer credit products Certain Consumer Credit Products [Member] Middle East Middle East [Member] Middle East - 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 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] Changes to accounting policies and presentation Disclosure of changes in accounting policies [text block] Intangible assets Opening balance as at 1 January Closing balance Intangible assets and goodwill Statement of comprehensive income [abstract] Statement of comprehensive income [abstract] Statement [Line Items] Statement of changes in equity [line items] Total comprehensive income attributable to: Comprehensive income attributable to [abstract] Market data services Market Data Services Market Data Services Proceeds from debt securities Proceeds from issue of bonds, notes and debentures Dividend declared Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners Statutory reserve Statutory reserve Economic sector / portfolio based adjustments Economic Sector Portfolio Based Adjustments Economic Sector Portfolio Based Adjustments Total debt securities at fair value through profit or loss Debt securities at fair value through profit or loss Financial assets at fair value through profit or loss, category Financial assets at fair value through profit or loss, category [member] Exchange rate differences Increase (decrease) through net exchange differences, intangible assets and goodwill Statement of financial position [abstract] Statement of financial position [abstract] Mandatorily measured at fair value through profit or loss Financial assets at fair value through profit or loss, mandatorily measured at fair value Other net income Other operating income (expense) Class actions where agreement was withdrawn Number Of Class Actions, Agreement Withdrawn Number Of Class Actions, Agreement Withdrawn Other interest expense Total other interest expense Interest expense on other financial liabilities Cover [Abstract] Cover [Abstract] Disclosure of credit risk exposure [abstract] Risk Management [Abstract] Risk Management [abstract] Depreciation and impairment of property and equipment Depreciation And Impairment Loss, Property Plant And Equipment Depreciation And Impairment Loss, Property Plant And Equipment 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 Classes of intangible assets other than goodwill [axis] Classes of intangible assets other than goodwill [axis] Other changes Increase (Decrease) In Composition Of Group And Other Changes Increase decrease in composition of group and other changes. Un-weighted ECL Exposure to credit risk on loan commitments and financial guarantee contracts             -  Share premium Share premium Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period Cash flows from financing activities Cash flows from (used in) financing activities [abstract] Impairments Impairment Loss Of Investments In Associates And Joint Ventures 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 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. Other personal lending Personal lending [Member] This member stands for loan loss provisions related to Personal lending. Capital adequacy assessment Disclosure of Capital Adequacy [Table Text Block] Disclosure of Capital Adequacy [Text Block] Total comprehensive income Comprehensive income Basis of preparation of the Condensed consolidated interim financial statements Disclosure of basis of preparation of financial statements [text block] Distributed under staff share plans Increase Through Share-based Payment Transactions, Equity Increase Through Share-based Payment Transactions, Equity Transfers Transfer to and from Investments other assets and liabilities Transfer to and from Investments other assets and liabilities. 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. Document Fiscal Period Focus Document Fiscal Period Focus Damages claimed Damages Claimed In Litigation Case Damages Claimed In Litigation Case 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] Total 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. 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. – 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] –  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 Additions Issues, fair value measurement, liabilities Share buyback programme authorized Share Buyback Programme Authorized Share Buyback Programme Authorized 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. Total revenue 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. 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 Equity (equity derivatives, structured notes) Equity Derivatives Structured Notes [Member] Equity (equity derivatives, structured notes). 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 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. Cashflows [Abstract] Cashflows [Abstract] Cashflows Debt securities Debt Securities Explanatory [Text Block] Debt Securities Explanatory Corporate bonds Corporate bonds [member] This member represents coproate bonds. Revaluation reserve: Equity securities and 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. Other reserves Other reserves [member] Additions Increase (decrease) through financing cash flows, liabilities arising from financing activities Thailand, Baht Thailand, Baht Reset spread (%) Reset Spread [Member] Reset spread. Reverse repurchase transactions Securities In Reverse Repurchase Transaction [Member] Securities in reverse repurchase transaction. –  Deposits Deposits1 [Member] Deposits1 Statutory reserve Statutory reserve [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 Balance sheet value Opening balance as at 1 January Closing balance Carrying amount pre-existing interest Investments in subsidiaries, joint ventures and associates reported in separate financial statements Securities business Securities Business Fee And Commission Expense Securities business fee and commission expense. 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] 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. Other fee and commission expenses Other fee and commission expense Reclassifications Reclassification Fair Value Measurement Assets Reclassification fair value measurement assets. Disclosure of reserves within equity [table] Disclosure of reserves within equity [table] Market Risk [Line Items] Disclosure of nature and extent of risks arising from financial instruments [line items] Other adjustments in reporting process Other Adjustments in Reporting Process Other Adjustments in Reporting Process 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 Legal proceedings Disclosure of Legal Proceedings Explanatory [Text Block] Disclosure of legal proceedings. Fair value of listed investments Fair value of listed investment Fair value of listed investment. Regulatory adjustments additional Tier 1 Additional tier one regulatory adjustments Additional tier one regulatory adjustments Securities at amortised cost Financial assets at amortised cost 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 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 Retail Germany Retail Germany [member] Retail Germany. Revaluation reserve: Credit liability Revaluation reserves credit liability A component of equity representing the accumulated revaluation reserve on the revaluation of credit liability. Software Computer software [member] Credit impairment of financial instruments [axis] Credit impairment of financial instruments [axis] Interest expense on subordinated loans Interest Expense On Subordinated Loans Interest expense on subordinated loans. 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 Revaluations Revaluation increase (decrease), Investments in associates and joint ventures Revaluation increase (decrease), Investments in associates and joint ventures. Reserves within equity [axis] Reserves within equity [axis] Equity securities at FVOCI Equity securities Equity investments [member] Repurchase transactions Receivables Related To Securities in Repurchase Transactions [Member] Receivables related to securities in repurchase transactions [member] Cash flows from investing activities Cash flows from (used in) investing activities [abstract] 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 Valuation results and net trading income Valuation results and net trading income – of which revaluations and trading income Trading income (expense) Summary of valuation adjustment Summary of valuation adjustment table [Table Text Block] Summary of valuation adjustment table Other Investments Other Equity Investments, Netting [Member] Other Equity Investments member. Change in fair value of derivatives relating to Gains (losses) on change in fair value of derivatives Employee share-based compensation plans Increase (decrease) through share-based payment transactions, equity 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. 11-13 (BB) BB Credit Grades [Member] BB credit grades. - Exchange rate differences Other comprehensive income, net of tax, exchange differences on translation of foreign operations Interest held, percentage Percentage of ownership interest Proportion of ownership interest in associate 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] Net Results IFRS-EU Net Results IFRS-EU [Member] Securities business Securities Business Fee And Commission Income Securities business fee and commission income. Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Available Tier 1 capital Tier One Capital Amount Tier one capital amount. Valuation Results And Net Trading Income [Line Items] Valuation Results And Net Trading Income [Line Items] Valuation Results And Net Trading Income [Line Items] 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] Geographical areas [domain] Geographical areas [domain] Additional Tier 1 securities Additional Tier One Capital Additional Tier One Capital Recoveries of amounts previously written off Unrealised revaluation Increase (decrease) through other movements, financial assets Disposals and redemptions: Cash Flows From Investing Activities [Abstract] Cash Flows From Investing Activities Turkey, New 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. Taxation paid Income taxes paid, classified as operating activities Consideration paid Consideration paid (received) Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] 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. Shareholders' equity (parent) Equity attributable to owners of parent [member] Share of associates, joint venture and other reserves 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 Transfers out of Level 2 into Level 1 of fair value hierarchy, liabilities held at end of reporting period Transfers out of Level 2 into Level 1 of fair value hierarchy, liabilities held at end of reporting period Disclosure of credit risk exposure [table] Disclosure of credit risk exposure [table] Basis of preparation and significant changes in the current reporting period Disclosure of material accounting policy information [text block] Other liabilities Other liabilities Loans and advances to customers Loans and advances to customers Loans and advances to customers Capital management Disclosure of Detailed Information About Capital Management [Text Block] The disclosure of detailed information about capital management. 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. Purchased/sold for trading purposes (in shares) Increase (decrease) in number of shares outstanding 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. Dividend received Dividends received, classified as operating activities Price (%) Price [member] Price. Entity Central Index Key Entity Central Index Key Initially applied IFRSs [axis] Initially applied IFRSs [axis] Advisory fees Professional fees expense Dividend income Dividends recognised for investments in equity instruments designated at fair value through other comprehensive income, held at end of reporting period Adjustment of the EU IAS 39 carve-out Adjustment of EU IAS 39 Carve-Out Adjustment of EU IAS 39 Carve-Out Valuation techniques used in fair value measurement [axis] Valuation techniques used in fair value measurement [axis] - 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 Interest expense on debt securities in issue Interest expense on debt instruments issued Net result attributable to: Profit (loss), attributable to [abstract] Legal reserve Legal Reserve Legal Reserve Net fee and commission income Disclosure of fee and commission income (expense) [text block] Net interest income Net interest income Net interest income Interest income (expense) Other interest income Interest Income Not Using Effective Interest Method Interest income not using effective interest method. 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 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. Method of assessment of expected credit losses [axis] Method of assessment of expected credit losses [axis] Transfers out of Level 3 Transfers out of Level 3 of fair value hierarchy, liabilities FVOCI debt instruments Debt securities and loans and advances [Member] This member stands for debt instruments that includes both debt securities and advances. Total income Income Profit (loss) from operating activities 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 Audit and supervisory fees Auditor's remuneration for audit services FVA FVA [Member] 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] Redemptions / Disposals Increase (Decrease) Through Redemptions or Disposals, Liabilities Arising From Financing Activities Increase (Decrease) Through Redemptions or Disposals, Liabilities Arising From Financing Activities Macro Economic Scenario [Domain] Macro Economic Scenario [Domain] Macro Economic Scenario [Domain] Germany, Belgium, Poland Germany, Belgium, Poland [Member] Germany, Belgium, Poland Purchased under staff share and stock option plans (in shares) Increase Through Share-based Payment Transactions, Shares Increase Through Share-based Payment Transactions, Shares Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period Changes in transfer to or (from) retained earnings Changes In Transfer To Or (From) Retained Earnings Changes in transfer to or from retained earnings. Statement of cash flows [abstract] Statement of cash flows [abstract] Disclosure of financial assets [table] Disclosure of financial assets [table] Type of measurement of expected credit losses [axis] Type of measurement of expected credit losses [axis] Interest income on debt securities at amortised cost Interest revenue for financial assets measured at amortised cost 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 GERMANY GERMANY Repayments of debt securities Repayments of bonds, notes and debentures Additions Additions in Investments in associates and joint ventures Additions in investments in associates and joint ventures. Payment Services Payment Services Fee And Commission Income Payment Services Fee And Commission Income Regulatory costs – of which Regulatory expenses Regulatory Costs Regulatory costs. Increase (decrease) in equity Increase (decrease) in equity Purchased under Share buyback programme Purchased under Share buyback programme Share Buyback Programme, Amount Share Buyback Programme, Amount Investments in associates and joint ventures Investments accounted for using equity method 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] Maximum distributable amount trigger level percentage Maximum Distributable Amount Trigger Level Maximum Distributable Amount trigger level percentage. Disclosure of fair value measurement of assets [line items] Disclosure of fair value measurement of assets [line items] Amortisation Amortisation expense Other comprehensive income Other comprehensive income [abstract] Baseline scenario Baseline Scenario [Member] An external consensus forecast is assembled from key sources, including HM Treasury, Bloomberg and the Urban Land Institute. 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. Acquisition of investments Acquisition of Singular Bank [Member] Acquisition of Singular Bank Financial liabilities at fair value, class Financial liabilities at fair value, class [member] 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. Increase in performing exposure, percentage Climate Transition Risk, Increase (Decrease) in Performing Exposure Percentage Climate Transition Risk, Increase (Decrease) in Performing Exposure Percentage Price (price per share) Price, Non-Percent [Member] Australia AUSTRALIA - Associates and joint ventures Purchase of interests in investments accounted for using equity method 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 financial liabilities at fair value through profit or loss Adjustments for increase (decrease) in financial liabilities measured at fair value through profit or loss Non-trading derivatives Non-trading derivative - Acquisition of subsidiaries, net of cash acquired Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities Subordinated loans Subordinated Loans [Member] Subordinated loans. BELGIUM BELGIUM Financial Assets Disclosure of financial assets [abstract] Other changes in treasury shares Increase (decrease) through treasury share transactions, equity 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] Other Increase (decrease) through other changes, liabilities arising from financing activities 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] 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] 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. Purchase of assets Purchases, fair value measurement, assets Diluted earnings Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share Disposals Disposals, intangible assets and goodwill Loan and advances at FVOCI Loan And Advances At Fair Value Through Other Comprehensive Income [Member] New IFRSs [axis] New IFRSs [axis]             -  Share capital Issued capital Financial assets at fair value through other comprehensive income Financial assets at fair value through other comprehensive income Disclosure of reconciliation of liabilities arising from financing activities [line items] Disclosure of reconciliation of liabilities arising from financing activities [line items] 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. 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, assets Total model ECL Total model ECL Total model ECL Categories of financial assets [axis] Categories of financial assets [axis] Beginning balance, ordinary shares (in shares) Ending balance, ordinary shares (in shares) Number of shares outstanding Products and services [axis] Products and services [axis] 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. Disclosure of equity [Line Items] Disclosure of reserves within equity [line items] Taxation Taxation Tax expense (income) Subsequent events Disclosure of events after reporting period [text block] Consolidated companies and businesses acquired and divested [abstract] Businesses Acquired and Divested [Abstract] Assets and liabilities held for sale [abstract] Investments and advances: Cash Flows Used In Investing Activities [Abstract] Cash Flows Used In Investing Activities 12-month expected credit losses 12-month expected credit losses [member] Equity/Equity correlation Equity And Equity Correlation One [Member] Equity and equity correlation. 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] Share of results – of which share of result from associates and joint ventures Share of profit (loss) of associates and joint ventures accounted for using equity method Cash and balances with central banks Cash and balances with central banks Cash and bank balances at central banks 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] Deposits from banks Deposits From Banks Category [Member] Deposits from banks. 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] 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 Gross proceeds Proceeds from sales of investments accounted for using equity method Eurozone Eurozone [Member] Eurozone Classes of financial instruments [axis] Classes of financial instruments [axis] Basis of preparation and accounting policies [abstract] Basis of Preparation and Accounting Policies [Abstract] Significant investments in associates [axis] Associates [axis] Reversals of impairments Reversal of impairment loss recognised in profit or loss 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 Performing exposure, percentage Climate Transition Risk, Performing Exposure Percentage Climate Transition Risk, Performing Exposure Percentage Spain SPAIN Reserve of gain (loss) at FVOCI Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member] Classes of financial assets [axis] Classes of financial assets [axis] Fee and commission expense Total fee and commission expenses Fee and commission expense 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. Profit or loss [abstract] Profit or loss [abstract] Revaluation reserve: Cash flow hedge Reserve of cash flow hedges Transfers and reclassifications  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. Classes of assets [axis] Classes of assets [axis] Valuation techniques and range of unobservable inputs Disclosure of significant unobservable inputs used in fair value measurement of assets [text block] Financial institutions' bonds Financial Institutions Bonds [Member] Financial institutions bonds. Shareholders’ equity (parent) In accordance with IFRS-IASB Shareholders’ equity Shareholders’ equity (parent) Equity attributable to owners of parent Interest received (paid) Net Interest Received (Paid) Classified As Operating Activities Net Interest Received (Paid) Classified As Operating Activities Earnings per ordinary share Earnings per share [abstract] Range [axis] Range [axis] Currently stated Currently stated [member] Components of equity [axis] Components of equity [axis] 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 Share Repurchase Program [Domain] Share Repurchase Program [Domain] Deposits from customers [abstract] Deposits from customers [abstract] Result before tax Result before tax Profit (loss) before tax Interest rates (Rates derivatives, FX derivatives) Interest Rates Derivatives Foreign Exchange Derivatives [Member] Interest rates (Rates derivatives, FX derivatives). 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 Implied volatility (%) Implied volatility (%) [member] Categories of related parties [domain] Categories of related parties [domain] 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. Classes of financial instruments [domain] Classes of financial instruments [domain] Disclosure of detailed information about business combination [table] Disclosure of detailed information about business combination [table] Exchange rate differences Exchange Rate Differences Fair Value Measurement Assets Exchange rate differences fair value measurement assets. Interest received Interest received, classified as operating activities 20-22 (D) Default Credit Grade [Member] Default Credit Grade. –  Trading liabilities Adjustments for increase (decrease) in financial liabilities held for trading 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 Interest expense on deposits Interest Expense On Deposits From Banks And Customers Interest Expense On Deposits From Banks And Customers Products and services [domain] Products and services [domain] Schedule of ING Group total Disclosure of operating segments [text block] 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 Retail Other Retail Other [Member] Retail Other [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 under Share buyback programme (in shares) Share Buyback Programme, Cancelled, Shares Share Buyback Programme, Cancelled, Shares Disclosure of detailed information about intangible assets [table] Disclosure of detailed information about intangible assets [table] Investments In Principal Subsidiaries Associates And Joint Ventures [Abstract] Investments In Associates and Joint Ventures [Abstract] Other reserves Non-controlling interests Other reserves IAS 29 IAS 29 [Member] IAS 29 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] Changes in models 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 Increase (decrease) in goodwill Increase (decrease) in goodwill Subordinated loans Subordinated liabilities Net cash flow from/(used in) financing activities Cash flows from (used in) financing activities - 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. 2028 Expected Credit Losses Sensitivity Year Three Sensitivity of expected credit losses by macroeconomic scenario in year three. Other changes Increase (decrease) through transfers and other changes, intangible assets and goodwill –  fair value hedges Fair value hedges [member] Macro Economic Scenario [Axis] Macro Economic Scenario [Axis] Additions and releases of provisions Addition (Reversal) Of Provisions, Net Addition (Reversal) Of Provisions, Net Treasury shares Opening balance Closing balance Treasury shares New financial assets originated or purchased Additions Increase through origination or purchase, financial assets Statement [Table] Statement of changes in equity [table] 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] Consumer lending Consumer Lending [Member] Change in average threshold ratio Increase (Decrease) In Average Threshold Ratio Increase (Decrease) In Average Threshold Ratio 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. Classes of assets [domain] Classes of assets [domain] Current Fiscal Year End Date Current Fiscal Year End Date Unrealised revaluations and exchange rate differences Unrealised Revaluations And Exchange Rate Differences [Member] Unrealised Revaluations And Exchange Rate Differences – Property and equipment Proceeds from sales of property, plant and equipment, classified as investing activities Types of hedges [domain] Types of hedges [domain] Dividend per ordinary share paid (in EUR per share) Dividends paid, ordinary shares per share Other valuation adjustments Other Valuation Adjustments [Member] Other Valuation Adjustments 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 Minimum Bottom of range [member] Credit impaired Financial instruments credit-impaired [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] Available Total capital Capital1 The amount of total capital as defined in the regulations. DVA DVA [Member] 2026 Expected Credit Losses Sensitivity Year One Sensitivity of expected credit losses by macroeconomic scenario in year one. Net result Net result Net result Profit (loss) Retail Belgium Retail Belgium [member] Retail Belgium. - Changes in cash flow hedge reserve Other comprehensive income, net of tax, cash flow hedges Carrying Amount Carrying amount1 [Member] Loans and advances to customers Disclosure of loans and advances to customers [text block] Expected credit losses Financial assets Opening balance as at 1 January Closing balance Financial assets Financial assets Poland POLAND 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 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. Accumulated amortisation Accumulated depreciation and amortisation [member] Retained earnings Retained earnings [member] Investment income Investment income Loans and advances to customers [abstract] Loans and Advances to Customers [Abstract] Dividends Dividends recognised as distributions to owners of parent Fee and commission income Fee and commission income [abstract] Entitys Total for Internal Credit Grades [Member] Internal credit grades [domain] Share capital and share premium Total share capital and share premium Share Capital And Share Premium Share capital and share premium. United Kingdom, Pounds United Kingdom, Pounds IFRS 9 IFRS 9 [member] Liabilities Liabilities [abstract] 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 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 Disposals Disposals Of Investments In Associates And Joint Ventures Covered bonds Covered bond [member] This member respresents covered bonds. Categories of financial assets [domain] Categories of financial assets [domain] Carrying amount Carrying amount [member] Dividend per ordinary share Disclosure of dividends [text block] 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 Unobservable inputs [domain] Unobservable inputs [domain] Changes in equity [abstract] Changes in equity [abstract] Fee and commission income (expense) [abstract] Fee and commission income (expense) [abstract] 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 Net profit after dividend reserving Net Profit After Dividend Reserving Net Profit After Dividend Reserving Not credit-impaired Financial instruments not credit-impaired [member] Carrying value Investments in equity instruments designated at fair value through other comprehensive income Share buyback programmes, cancellation of shares Cancellation of treasury shares Debt securities portfolio Debt Securities Portfolio [Member] Debt securities portfolio. Global GDP increase Global GDP Rate Increase (Decrease) Global GDP Rate Increase (Decrease) Share buyback programmes, commitment Share Buyback Programme, Committment Share Buyback Programme, Committment Purchased under staff share plans Decrease Through Share-based Payment Transactions, Equity Decrease Through Share-based Payment Transactions, Equity Commodity volatility (%) Commodity Volatility [Member] Commodity volatility. Share buyback programmes, repurchases of shares Purchase of treasury shares Percentage of voting equity interests acquired Percentage of voting equity interests acquired Total capital ratio Capital ratio Capital ratio Share repurchase program two Share Repurchase Program Two [Member] Share Repurchase Program Two 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. Fair value of swap Total financial assets Opening balance as at 1 January Closing balance Financial assets, at fair value - Derivatives Derivatives [member] Withholding tax on dividends paid, ordinary shares Withholding Tax On Dividends Paid Withholding tax on dividends paid related to ordinary shares. Fair value of pre-existing interest (45%) Acquisition-date fair value of equity interest in acquiree held by acquirer immediately before acquisition date Bid/Offer Bid/Offer [Member] Net defined benefit asset/liability remeasurement reserve Reserve of remeasurements of defined benefit plans Currency translation reserve Reserve of exchange differences on translation [member] Turkey TÜRKIYE Disclosure Of Capital Management [Abstract] Capital Management [Abstract] 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 [Abstract] Non Cash Changes [Abstract] Non Cash Changes Financial Assets Financial assets at amortised cost, class [member] Operating expenses Operating expenses Operating expense Disclosure of fair value measurement of liabilities [table] Disclosure of fair value measurement of liabilities [table] Segments banking activities Banking Activities [Member] Banking activities. Designated at fair value through profit or loss Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently Total equity Balance start of period Balance end of period Shareholders' equity Equity Government bonds Government bonds [member] This member represents Government bonds. Redemptions Early Repayment Of Liabilities Fair Value Early repayment of liabilities fair value. Share buyback programme (in shares) Purchased under Share buyback programme (in shares) Share Buyback Programme, Shares Share Buyback Programme, Shares Outsourcing and subcontracting Outsourcing And Subcontracting Expenses Outsourcing And Subcontracting Expenses Bank of Beijing Bank Of Beijing [Member] Other assets Other assets 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. 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. 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 Sub-sovereign, Supranationals and Agencies Sub-sovereign Supranationals and Agencies [Member] Sub sovereign supranationals and agencies. 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] Dividends paid Dividend paid Dividends paid, classified as financing activities Adjustment of the EU 'IAS 39 carve out' 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. 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 [Member] Loans and advances to customers. Disclosure of Legal Proceedings [line items] Disclosure of Legal Proceedings [line items] Line items representing legal proceedings. Modification gains and losses on restructured financial assets Modification Gains And Losses On Restructured Financial Assets [Member] 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 Disclosure Of Capital Management [Line Items] Disclosure Of Capital Management [Line Items] –  Non–trading derivatives Adjustments For Increase (Decrease) In Non Trading Derivatives Adjustments For Increase (Decrease) In Non Trading Derivatives Interest income using effective interest rate method Total interest income using effective interest rate method Interest revenue calculated using effective interest method Designated at fair value through profit or loss Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently 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. –  cash flow hedges (ineffective portion) Cash flow hedges [member] Net fee and commission income Net fee and commission income Net fee and commission income Fee and commission income (expense) 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 Negative interest income on liabilities Negative Interest Income On Liabilities Negative interest income on liabilities. Other Other changes in investments accounted for using equity method The amount of other changes in investments accounted for using equity method. Foreign exchange transactions results Trading income (expense) on foreign exchange contracts Share of associates and joint ventures and other reserves 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 Deferred tax assets Non-controlling interests Non-controlling interests [member] Non-controlling interests Comprehensive income, attributable to non-controlling interests Remeasurement pre-existing interest Gain (loss) recognised as result of remeasuring to fair value equity interest in acquiree held by acquirer before business combination Other operating expenses Disclosure of other operating expense [text block] 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). 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. Deposits from banks Current Deposits From Banks Current Deposits From Banks Statement of changes in equity [abstract] Climate transition risk Climate Transition Risk Climate Transition Risk Business lending Business Lending [Member] Retained earnings Retained earnings Measurement [domain] Measurement [domain] Disclosure of business acquisition Disclosure of detailed information about business combination [text block] 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 (%) Loans and advances to banks Loans And Advances To Banks [Member] The amount of loans and advances the entity has made to banks. Financial assets that have been derecognised Disposals and redemptions Decrease through derecognition, financial assets 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] Decrease through derecognition and repayments financial assets Decrease Through Derecognition And Repayments Financial Assets Decrease Through Derecognition And Repayments Financial Assets –  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 Subsidiaries [axis] Subsidiaries [axis] 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 paid Interest paid, classified as operating activities Interest rate (%) Interest Rate [Member] 8-10 (BBB) BBB Credit Grades [Member] BBB credit grades. Geographical [Domain] Geographical [Domain] Trading assets Financial assets at fair value through profit or loss, classified as held for trading Disclosure Of Legal Proceedings [Table] Disclosure Of Legal Proceedings [Table] Disclosure of legal proceedings Sensitivity analysis for credit risk Sensitivity Analysis For Credit Risk [Table Text Block] Geographical areas [axis] Geographical areas [axis] Class actions where agreement was reached Number Of Class Actions, Agreement Reached Number Of Class Actions, Agreement Reached Opening balance as at 1 January Closing balance Liabilities arising from financing activities Maximum distributable amount, management basis points buffer Maximum Distributable Amount, Management Basis Points Buffer Maximum Distributable Amount, Management Basis Points Buffer Disclosure of fair value measurement of assets [table] Disclosure of fair value measurement of assets [table] 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. Promotional and client acquisition costs Promotional And Clients Acquisition Costs Promotional And Clients Acquisition Costs Structured notes Structured Notes [Member] Structured notes. Segments [domain] Segments [domain] Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Cash and cash equivalents at end of the period Cash and cash equivalents – Other investments Proceeds from sales of investments other than investments accounted for using equity method Currency translation reserve Reserve of exchange differences on translation Disclosure of non-adjusting events after reporting period [line items] Disclosure of non-adjusting events after reporting period [line items] Negative fair value movements from using reasonable possible alternatives Negative Fair Value Movements Using Possible Alternatives Negative fair value movements using possible alternatives. Total liabilities and equity Equity and liabilities Wholesale Banking and Retail Banking Wholesale Banking and Retail Banking [Member] Wholesale Banking and Retail Banking UNITED STATES UNITED STATES Debt securities in issue Debt securities in issue [Member] Debt securities in issue [member] Business combinations [axis] Business combinations [axis] Provisions Provisions 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 Total expenses Expenses Expenses, by nature Business combinations [domain] Business combinations [domain] 19 (C) C Credit Grades [Member] C Credit Grades Stage 3: Lifetime Expected Credit Losses Stage 3: Lifetime Expected Credit Losses [member] This member represents stage 3, lifetime expected credit losses. Financial assets at fair value through profit or loss [abstract] 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] 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. Financial assets at fair value through other comprehensive income [abstract] Financial assets at fair value through other comprehensive income [abstract] United States of America, Dollars 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. 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 Classes of financial assets [domain] Classes of financial assets [domain] Reconciliation net result effect of adjustment after tax EU IAS 39 carve-out 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. Impairment 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. Intangible assets Disclosure of intangible assets [text block] Financial liabilities Financial liabilities at amortised cost, class [member] - 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 Own credit adjustments Own Credit Adjustments [Member] Own Credit Adjustments Wholesale Banking Wholesale Banking [Member] Level 3 Level 3 of fair value hierarchy [member] Interest expense on lease liabilities Interest expense on lease liabilities Significant judgements and critical accounting estimates and assumptions Disclosure of accounting judgements and estimates [text block] Goodwill Goodwill recognised as of acquisition date Retail Netherlands [Member] Retail Netherlands [Member] Retail Netherlands. Unobservable inputs [axis] Unobservable inputs [axis] Write-offs Impairments Decrease through write-off, financial assets Negative interest expense on assets Negative Interest Expense On Assets Negative interest expense on assets. Global GDP rate assumed Global GDP Rate Increase (Decrease) Assumed Global GDP Rate Increase (Decrease) Assumed 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 Excluding all managment adjustments Excluding All Managment Adjustments [Member] Past Due Status [Axis] Past due status [axis] Goodwill Goodwill [member] Summary of financial assets at fair value through profit or loss Disclosure of financial instruments at fair value through profit or loss [text block] Net cash flow from/(used in) operating activities Cash flows from (used in) operating activities Disclosure of customer deposits [table] Disclosure of customer deposits [table] Schedule disclosing information related to details of customer deposits. – 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 Intangible Assets [Abstract] Intangible Assets [Abstract] Intangible Assets [Abstract] Financial assets, increase (decrease) in provisions Financial Assets, Increase (Decrease) In Provisions Financial Assets, Increase (Decrease) In Provisions Document Fiscal Year Focus Document Fiscal Year Focus Adjusted for: Adjustments to reconcile profit (loss) [abstract] Summary of exposure to (reverse) repurchase agreements Disclosure of repurchase and reverse repurchase agreements [text block] Valuation results and net trading income Valuation Results And Net Trading Income [Text Block] Other Commitments Other Commitments [Member] Other Commitments 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 in loan loss provisions Increase (decrease) in financial assets Classes of other provisions [axis] Classes of other provisions [axis] Changes in IFRS effective 2026 and upcoming changes in IFRS after 2026 Disclosure of expected impact of initial application of new standards or interpretations [text block] Net interest income [abstract] Net Interest Income [Abstract] Legal proceedings provision Legal proceedings provision Management Adjustments Management Adjustments Explanatory [Table Text Block] Management Adjustments Explanatory 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 Currency Other Currency [Member] Increase through write-offs and disposals, financial assets Increase (Decrease) Through Write-Offs and Disposals, Financial Assets Increase (Decrease) Through Write-Offs and Disposals, Financial Assets Disclosure of credit risk exposure [line items] Disclosure of credit risk exposure [line items] –  Other assets Adjustments for decrease (increase) in other assets 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] Dividend yield (%) Dividend Yield [Member] Dividend yield. –  Provisions and other liabilities Adjustments for increase (decrease) in other liabilities Net drawdowns and repayments Net Repayment Increase In Gross Carrying Amount Net Repayment Increase In Gross Carrying Amount Retail banking Retail Banking [Member] Corporate Line Corporate Line Banking [Member] Corporate line banking. Non-investment grade Grades 11-17 Non-investment grade [member] This member represents internal credit grade: Non-investment grade wholesale. Treasury bills and other eligible bills included in securities at AC Treasury Bills And Other Eligible Bills Treasury Bills And Other Eligible Bills 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 Fee and commission income Total fee and commission income Fee and commission income Other Balances on other deposits from customers Disclosure of financial assets [line items] Disclosure of financial assets [line items] 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] Repayments of principal portion of lease liabilities Payments of lease liabilities, classified as financing activities –  other non-trading derivatives Other Non-Trading Derivatives [Member] Other non-trading derivatives. Businesses acquired and divested Disclosure of business combinations [text block] Changes in unrealised revaluations Increase (decrease) through changes in fair values, liabilities arising from financing activities 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. 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 Other changes Increase (Decrease) Through Changes In Composition Of The Group And Other Changes, Equity Increase (decrease) through changes in composition of the group and other changes. – 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] Sensitivity analysis of level 3 instruments Disclosure Of Fair Value Financial Sensitivity Analysis Explanatory [Table Text Block] Disclosure of fair value financial sensitivity analysis. Per ordinary share Earning Per Ordinary Share [Abstract] Earning Per Ordinary Share Reclassifications Reclassification Fair Value Measurement Liabilities Reclassification Fair Value Measurement Liabilities Diluted earnings (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Mortgages Residential mortgages Mortgages [member] Repayments of subordinated loans Repayments of subordinated liabilities Loans and receivables Loans and receivables mandatorily measured at fair value through profit or loss Loans and receivables, category [member] 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. Global output percent Global Output Percent Global Output Percent Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Trading securities –  Trading securities Trading securities [member] Non-controlling interests Non-controlling interests Reserves within equity [domain] Reserves within equity [domain] Debt securities Debt instruments at FVOCI Debt securities [member] 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 Russia, Rubles Russia, Rubles –  Trading assets Adjustments for decrease (increase) in financial assets held for trading Non-controlling interests Non-controlling interests Non-controlling interests Profit (loss), attributable to non-controlling interests All Currencies [Domain] All Currencies [Domain] Stage 3 Stage Three [Member] This member stands for assets assessed to have experienced a significant increase in credit risk for long term. Equity Equity [abstract] FVOCI equity securities - Equity securities Other equity securities [member] Other operating expenses Other operating expense Other expenses, by nature 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] 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. Central bank bonds Central Bank Bonds [Member] Central Bank Bonds Share Repurchase Program [Axis] Share Repurchase Program [Axis] Ownership interest held in equity based investments Ownership Interest Held In Equity Based Investments Ownership Interest Held In Equity Based Investments 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] 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] Financial assets at FVOCI Debt securities at fair value through other comprehensive income Financial assets at fair value through other comprehensive income, category [member] Non-trading derivatives Non Trading Derivatives Liabilities [member] Non-trading derivatives liabilities. 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] Derivatives at foreign exchange Derivatives At Foreign Exchange [Member] Derivatives at foreign exchange. Other cash distributions Other Cash Distributions Other cash distributions –  Debt securities Debt Securities, Liabilities [Member] 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 Value of Client Invested Assets Value of Client Invested Assets Value of Client Invested Assets Share repurchase program three Share Repurchase Program Three [Member] Share Repurchase Program Three Addition to loan loss provisions Allowance For Credit Losses Recognised In Profit (Loss) Allowance For Credit Losses Recognised In Profit (Loss) Customer Deposits, By Customer [Domain] Customer Deposits, By Customer [Domain] Customer Deposits, By Customer [Domain] Derivative at credit Derivatives At Credit [Member] Derivative at credit. Valuation results on assets and liabilities designated and mandatory 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. Shareholders of the parent Comprehensive income, attributable to owners of parent Derivatives trading results Trading income (expense) on derivative financial instruments Total liabilities Liabilities Australia, Dollars Australia, Dollars Reconciliation net result under IFRS-EU and IFRS-IASB Disclosure of Reconciliation Net Result Explanatory [Table Text Block] The disclosure of reconciliation net result. 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] Increase (decrease) due to departure from requirement of IFRS Increase (decrease) due to departure from requirement of IFRS [member] Other investments in associates and joint ventures Other Investments in Associates and Joint Ventures [member] Other investments in associates and joint ventures. 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. Fair value of assets and liabilities Disclosure of fair value measurement [text block] 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 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] Deposits from banks Deposits from banks Lease liabilities [member] Lease liabilities [member] Disclosure of Other Operating Expense [Abstract] Other Operating Expenses [Abstract] Disclosure of other operating expense. Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss [abstract] Customer deposits Customer deposits Deposits from customers - Other adjustments Other adjustments to regulatory capital Other adjustments to regulatory capital Type of measurement of expected credit losses [domain] Type of measurement of expected credit losses [domain] Property and equipment Property, plant and equipment including right-of-use assets Financial liabilities, at fair value Opening balance as at 1 January Closing balance Financial liabilities, at fair value 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. Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] 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. Valuation techniques used in fair value measurement [domain] Valuation techniques used in fair value measurement [domain] Initially applied IFRSs [domain] Initially applied IFRSs [domain] 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] Poland, Zlotych Poland, Zlotych Disclosure of Capital management [table] Disclosure of Capital management [table] Disclosure of Capital management [table] Scenario [Axis] Scenario [Axis] Maturity/settlement Settlements, fair value measurement, assets Share capital and share premium Classes Of Share Capital And Share Premium [Member] Share capital and share premium. Reserve of unrealized gain (loss) at FVOCI Reserve of Unrealized Gains and Losses on Financial Assets Measured at Fair Value Through Other Comprehensive Income [Member] Reserve of Unrealized Gains and Losses on Financial Assets Measured at Fair Value Through Other Comprehensive Income Trading assets Trading assets [member] Trading assets. - 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] 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 Lawsuit in favor of ING Lawsuit Finalised In Favor Of ING Lawsuit Finalised In Favor Of ING Significant unobservable inputs, percentage Significant Unobservable Inputs Significant Unobservable Inputs Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] - Debt securities Debt Securities And Structured Notes [Member] Debt Securities And Structured Notes Significant unobservable inputs, price (in EUR per share) Price Significant Unobservable Inputs Price significant Unobservable Inputs Model Risk Model Risk [Member] TMBThanachart Bank Public Company Limited TMBThanachart Bank Public Company Limited [Member] TMBThanachart Bank Public Company Limited Interest rate volatility (bps) Interest rate volatility [Member] The member represents significant unobservable input from interest rate volatility. Foreign exchange and other movements Exchange rate differences Increase (decrease) through foreign exchange, financial assets Facilities Rental expense Deferred Day One Profit or Loss Deferred Day One Profit Or Loss Reserve [Member] Deferred Day One Profit Or Loss Reserve Deferred tax liabilities Deferred tax liabilities Geographical [Axis] Geographical [Axis] Total other comprehensive income Other comprehensive income Other comprehensive income Classes of liabilities [axis] Classes of liabilities [axis] Transfers out of Level 3 Transfers out of Level 3 of fair value hierarchy, assets CET1, ambition Common Equity Tier 1, Ambition Percent Common Equity Tier 1, Ambition Percent Treasury shares Treasury shares [member] Past due status [domain] Past due status [domain] Fair value of identifiable net assets (100%) Identifiable assets acquired (liabilities assumed) Net cash flow Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Derivatives at equity Derivatives At Equity [Member] Derivatives at equity. Goldman Sachs TFI Goldman Sachs TFI [Member] Goldman Sachs TFI – Depreciation and amortisation Adjustments for depreciation and amortisation expense Forecast Forecast [Member] Changes in level 3 financial liabilities Disclosure of fair value measurement of liabilities [text block] 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. Investment grade Investment Grade [Member] Internal credit grade 1-10 investment. Qualitative indicator, days arrears, backstop Qualitative Indicator, Days Arrears, Backstop Qualitative Indicator, Days Arrears, Backstop Contributions to the deposit guarantee schemes Contributions to deposit guarantee schemes The portion of regulatory costs that represents contributions to deposit guarantee schemes. 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. Transfers Increase (Decrease) Through Transfer Between Other Reserves And Retained Earnings, Equity Increase (Decrease) Through Transfer Between Other Reserves And Retained Earnings, Equity 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] Number of share buyback programmes, initiated during the period Number of Share Buyback Programmes, Initiated During The Period Number of Share Buyback Programmes, Initiated During The Period 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. Customer deposits Deposits From Customers Category [Member] Deposits From Customers Category Customer deposits Disclosure of deposits from customers [text block] Summary of equity Disclosure of Equity [Table Text Block] Disclosure of equity. Private individuals Private Individuals [member] Private Individuals [member] Provisions Accumulated impairments Accumulated impairment [member] Other reserves Other Reserves [Abstract] Other Reserves Reserves and other equity interest Disclosure of reserves within equity [text block] Classes of intangible assets and goodwill [domain] Classes of intangible assets and goodwill [domain] Net cash flow from/(used in) investing activities Cash flows from (used in) investing activities New IFRSs [domain] New IFRSs [domain] Loans and advances Loans And Advances [Member] Loans and advances. Disclosure of detailed information about intangible assets [line items] Disclosure of detailed information about intangible assets [line items] Amortisation and impairment of intangible assets Depreciation And Impairment Loss, Intangible Assets Depreciation And Impairment Loss, Intangible Assets Equity at FVOCI Equity At Fair Value Through Other Comprehensive Income [Member] Disclosure Of Legal Proceedings [Abstract] Legal Proceedings [Abstract] Disclosure of legal proceedings. Staff expenses Employee benefits expense Amortisation Amortisation, intangible assets other than goodwill Other derivatives Other Derivatives [Member] Other derivatives. Dividends received Decrease In Investments In Subsidiaries Joint Ventures And Associates From Dividends Received Cancelled under Share buyback programme Share Buyback Programme, Cancelled, Amount Share Buyback Programme, Cancelled, Amount Departure from requirement of IFRS [axis] Departure from requirement of IFRS [axis] Lifetime expected credit losses Lifetime expected credit losses [member] 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 Disclosure of operating segments [table] Disclosure of operating segments [table] 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 14-16 (B) B Credit Grades [Member] B Credit Grades [Member] ING Bank ING Bank NV [Member] ING Bank NV. Segments [axis] Segments [axis] Average threshold ratio Average Threshold Ratio Average Threshold Ratio 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. Total other interest income Interest income on other financial assets – Revaluations Total Valuation Adjustments Adjustments for fair value losses (gains) – Other investments Purchase of investments other than investments accounted for using equity method Types of hedges [axis] Types of hedges [axis] Interest expense other Miscellaneous interest expense The amount of interest expense incurred during the period related other items. Debt securities at amortised cost Financial assets at amortised cost, category [member] 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] Exchange rate differences Gains (losses) recognised in profit or loss on exchange differences, fair value measurement, liabilities Total management adjustments Management Adjustments Management Adjustments Non-trading derivatives Non Trading Derivatives Assets [Member] Non-trading derivatives. - 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 Conclusion of litigation Conclusion Of Litigation [Member] Conclusion Of Litigation Capital requirements [axis] Capital requirements [axis] Amendment Flag Amendment Flag Components of equity [domain] Components of equity [domain] Dividends and other cash distributions Dividends recognised as distributions to owners Dividends recognised as distributions to owners Disclosure of operating segments [line items] Disclosure of operating segments [line items] 5-7 (A) A Credit Grades [Member] A credit grades. IT related expenses (excluding outsourcing and subcontracting) Information Technology Expenses, Excluding Outsourcing And Subcontracting Information Technology Expenses, Excluding Outsourcing And Subcontracting Dividend per ordinary share [abstract] Dividend Per Ordinary Share [Abstract] Stage 1 Stage One Credit Impairment [Member] The member stands for intial assessment of credit deterioration. Current tax assets Current tax assets 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] Range [domain] Range [domain] 18 (CC) CC Credit Grades [Member] CC Credit Grades Purchase/sale of treasury shares Proceeds From Sale Or Issue (Purchase) Of Treasury Shares Proceeds From Sale Or Issue (Purchase) Of Treasury Shares Total interest income Interest income 2027 Expected Credit Losses Sensitivity Year Two Sensitivity of expected credit losses by macroeconomic scenario in year two. Scenario [Domain] Scenario [Domain] Capital Requirements [Member] Capital requirements [domain] CVA CVA [Member] Of which: non-performing Non-performing [member] This member stands for non performing category of risk. 1 (AAA) AAA Credit Grades [Member] AAA credit Grades. Equity volatility (%) Equity volatility [member] Equity volatility. Total ECL collective assessment Total ECL Collective Assessment Total ECL Collective Assessment –  Loans and advances to banks, not available on demand Adjustments for decrease (increase) in loans and advances to banks Reserve of cash flow hedges Reserve of cash flow hedges [member] Increase (decrease) through net level two transfers, financial assets Increase (decrease) Through Net Level Two Transfers, Financial Assets Increase (decrease) Through Net Level Two Transfers, Financial Assets Investments in associates and joint ventures Disclosure of investments accounted for using equity method [text block] Accumulated impairment losses Accumulated Impairment Losses Accumulated Impairment Losses Currency [Axis] Currency [Axis] Other fee and commission income Other fee and commission income Summary of exposure to debt securities Summary of Exposure To Debt Securities [Table Text Block] Diluted earnings per ordinary share (in EUR per share) Diluted earnings (in EUR per share) Diluted earnings (loss) per share Categories of financial liabilities [axis] Categories of financial liabilities [axis] Non-credit replacement guarantees Non-Credit Replacement Guarantees [Member] 2-4 (AA) AA Credit Grades [Member] AA credit grades. Credit impairment of financial instruments [domain] Credit impairment of financial instruments [domain] Disclosure of reconciliation of liabilities arising from financing activities [table] Disclosure of reconciliation of liabilities arising from financing activities [table] 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] 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. Lending business Lending Business Fee And Commission Income Lending Business Fee And Commission Income 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] Individual provisions adjustments Individual Provisions Adjustments Individual Provisions Adjustments Internal Credit Grades [Axis] Internal credit grades [axis]