| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 72861000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-12-31 | esef |
| cash_and_equivalents | {"amount": 62013000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2021-12-31 | esef |
| cash_and_equivalents | {"amount": 53669000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-12-31 | esef |
| cash_and_equivalents | {"amount": 53564000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-01-01 | esef |
| cash_and_equivalents | {"amount": 53564000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-12-31 | esef |
| cash_and_equivalents | {"amount": 42149000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-01-01 | esef |
| cashflow_financing | {"amount": -879000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2020-12-31 | esef |
| cashflow_financing | {"amount": 1457000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2019-12-31 | esef |
| cashflow_financing | {"amount": -2156000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2025-12-31 | esef |
| cashflow_financing | {"amount": 951000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2024-12-31 | esef |
| cashflow_financing | {"amount": -3320000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2023-12-31 | esef |
| cashflow_financing | {"amount": 318000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2022-12-31 | esef |
| cashflow_financing | {"amount": 1527000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2021-12-31 | esef |
| cashflow_investing | {"amount": -102000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2020-12-31 | esef |
| cashflow_investing | {"amount": -293000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2025-12-31 | esef |
| cashflow_investing | {"amount": 264000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2024-12-31 | esef |
| cashflow_investing | {"amount": -250000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2023-12-31 | esef |
| cashflow_investing | {"amount": -201000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2022-12-31 | esef |
| cashflow_investing | {"amount": -217000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2021-12-31 | esef |
| cashflow_investing | {"amount": 754000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2019-12-31 | esef |
| cashflow_operating | {"amount": 11747000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2025-12-31 | esef |
| cashflow_operating | {"amount": 959000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2024-12-31 | esef |
| cashflow_operating | {"amount": 2912000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-12-31 | esef |
| cashflow_operating | {"amount": 11884000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2022-12-31 | esef |
| cashflow_operating | {"amount": 6962000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2021-12-31 | esef |
| cashflow_operating | {"amount": 2255000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2020-12-31 | esef |
| cashflow_operating | {"amount": 8050000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2019-12-31 | esef |
| controlled_by | {"lei": "969500TJ5KRTCJQWXH05", "meaning": "oberste Konsolidierung (Konzernspitze)", "enti | | gleif |
| entity_legal_form | {"value": "K65D", "elf_code": "K65D"} | | gleif |
| eps_basic | {"amount": 7.18, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2025-12-31 | esef |
| eps_basic | {"amount": 6.73, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_basic | {"amount": 5.32, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2023-12-31 | esef |
| eps_basic | {"amount": 4.73, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2022-12-31 | esef |
| eps_basic | {"amount": 4750000.0, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2021-12-31 | esef |
| eps_basic | {"amount": 3700000.0, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2020-12-31 | esef |
| eps_basic | {"amount": 4460000.0, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2019-12-31 | esef |
| eps_diluted | {"amount": 7.18, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2025-12-31 | esef |
| eps_diluted | {"amount": 6.73, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_diluted | {"amount": 5.32, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2023-12-31 | esef |
| eps_diluted | {"amount": 4.73, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2022-12-31 | esef |
| eps_diluted | {"amount": 4750000.0, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2021-12-31 | esef |
| eps_diluted | {"amount": 3700000.0, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2020-12-31 | esef |
| eps_diluted | {"amount": 4460000.0, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2019-12-31 | esef |
| headquarters_address | {"city": "MONTROUGE", "region": null, "street": "12 PLACE DES ETATS UNIS", "country": "FR" | | gleif |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 7000000.0} | 2021-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 1000000.0} | 2019-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": -191000000.0} | 2023-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": -368000000.0} | 2022-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 9000000.0} | 2021-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 95000000.0} | 2020-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 37000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 4504000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": -280000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 1951000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 357000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": -897000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 5793000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 335000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 2000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 3000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 1000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": -4000000.0} | 2019-12-31 | esef |
| ifrs:AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSale | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSale | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSale | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:Assets | {"amount": 884789000000.0} | 2025-12-31 | esef |
| ifrs:Assets | {"amount": 847910000000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 757367000000.0} | 2023-12-31 | esef |
| ifrs:Assets | {"amount": 728202000000.0} | 2022-12-31 | esef |
| ifrs:Assets | {"amount": 599721000000.0} | 2021-12-31 | esef |
| ifrs:Assets | {"amount": 593890000000.0} | 2020-12-31 | esef |
| ifrs:Assets | {"amount": 552743000000.0} | 2019-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 6.73} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 7.18} | 2025-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 5.32} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 4.73} | 2022-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 4750000.0} | 2021-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 3700000.0} | 2020-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 4460000.0} | 2019-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 86905000000.0} | 2025-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 82012000000.0} | 2024-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 77175000000.0} | 2023-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 78711000000.0} | 2022-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 65067000000.0} | 2021-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 54435000000.0} | 2020-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 58257000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 72861000000.0} | 2022-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 62013000000.0} | 2021-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 53669000000.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 53564000000.0} | 2020-01-01 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 53564000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 42149000000.0} | 2019-01-01 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 72532000000.0} | 2025-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 70522000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 69485000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 72861000000.0} | 2022-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 62013000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 1527000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -879000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 1457000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -2156000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 951000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -3320000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 318000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 4000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -293000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": 264000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -250000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -201000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -217000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -102000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": 754000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 11747000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 959000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 2912000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 11884000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 6962000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 2255000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 8050000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 2000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 6000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 11000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 23000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 144000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 1260000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 2187000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 3101000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 2473000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 801000000.0} | 2022-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 1973000000.0} | 2021-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 837000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 1774000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 30000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 34000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 14000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 11000000.0} | 2022-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 12000000.0} | 2021-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 7000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 17000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 2157000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 3067000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 2459000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 790000000.0} | 2022-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 1962000000.0} | 2021-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 830000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 1757000000.0} | 2019-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:CumulativeGainLossPreviouslyRecognisedInOtherComprehensiveIncomeArisingFromReclassificationOfFinancialAssetsOutOfFairValueThroughOtherComprehensiveIncomeIntoFairValueThroughProfitOrLossMeasurementCategory | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:DebtInstrumentsHeldAtAmortisedCost | {"amount": 42422000000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsHeldAtAmortisedCost | {"amount": 40979000000.0} | 2024-12-31 | esef |
| ifrs:DebtInstrumentsHeldMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 13927000000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsHeldMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 14413000000.0} | 2024-12-31 | esef |
| ifrs:DebtInstrumentsIssuedAtAmortisedCost | {"amount": 74879000000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsIssuedAtAmortisedCost | {"amount": 77754000000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 3327000000.0} | 2025-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 3671000000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 2271000000.0} | 2023-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 2611000000.0} | 2022-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 1323000000.0} | 2021-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 1503000000.0} | 2020-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 1550000000.0} | 2019-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 3141000000.0} | 2025-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 3190000000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 3993000000.0} | 2023-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 5141000000.0} | 2022-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 1202000000.0} | 2021-12-31 | esef |