| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 155561000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-12-31 | esef |
| cash_and_equivalents | {"amount": 159729000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2021-12-31 | esef |
| cash_and_equivalents | {"amount": 151213000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-12-31 | esef |
| cash_and_equivalents | {"amount": 90776000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-01-01 | esef |
| cash_and_equivalents | {"amount": 90776000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-12-31 | esef |
| cash_and_equivalents | {"amount": 74185000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-01-01 | esef |
| cashflow_financing | {"amount": 7684000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2020-12-31 | esef |
| cashflow_financing | {"amount": 2206000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2019-12-31 | esef |
| cashflow_financing | {"amount": -4491000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2025-12-31 | esef |
| cashflow_financing | {"amount": 9447000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2024-12-31 | esef |
| cashflow_financing | {"amount": 16546000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2023-12-31 | esef |
| cashflow_financing | {"amount": 1570000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2022-12-31 | esef |
| cashflow_financing | {"amount": -1701000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2021-12-31 | esef |
| cashflow_investing | {"amount": -838000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2021-12-31 | esef |
| cashflow_investing | {"amount": -4402000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2025-12-31 | esef |
| cashflow_investing | {"amount": -1782000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2024-12-31 | esef |
| cashflow_investing | {"amount": 9852000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2023-12-31 | esef |
| cashflow_investing | {"amount": -5058000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2022-12-31 | esef |
| cashflow_investing | {"amount": -3228000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2020-12-31 | esef |
| cashflow_investing | {"amount": 6282000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2019-12-31 | esef |
| cashflow_operating | {"amount": 19012000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2025-12-31 | esef |
| cashflow_operating | {"amount": -15909000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2024-12-31 | esef |
| cashflow_operating | {"amount": -36512000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-12-31 | esef |
| cashflow_operating | {"amount": 594000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2022-12-31 | esef |
| cashflow_operating | {"amount": 10930000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2021-12-31 | esef |
| cashflow_operating | {"amount": 57289000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2020-12-31 | esef |
| cashflow_operating | {"amount": 6837000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2019-12-31 | esef |
| entity_legal_form | {"value": "K65D", "elf_code": "K65D"} | | gleif |
| eps_basic | {"amount": 2.18, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2025-12-31 | esef |
| eps_basic | {"amount": 2.109, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_basic | {"amount": 1.943, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2023-12-31 | esef |
| eps_basic | {"amount": 1.681, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2022-12-31 | esef |
| eps_basic | {"amount": 1836000.0, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2021-12-31 | esef |
| eps_basic | {"amount": 804000.0, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2020-12-31 | esef |
| eps_basic | {"amount": 1482000.0, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2019-12-31 | esef |
| eps_diluted | {"amount": 2.18, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2025-12-31 | esef |
| eps_diluted | {"amount": 2.109, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_diluted | {"amount": 1.943, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2023-12-31 | esef |
| eps_diluted | {"amount": 1.681, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2022-12-31 | esef |
| eps_diluted | {"amount": 1836000.0, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2021-12-31 | esef |
| eps_diluted | {"amount": 804000.0, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2020-12-31 | esef |
| eps_diluted | {"amount": 1482000.0, "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": -6241000000.0} | 2023-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 7410000000.0} | 2022-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 3194000000.0} | 2021-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 7463000000.0} | 2020-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 7145000000.0} | 2019-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": -11586000000.0} | 2023-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 7811000000.0} | 2022-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 5105000000.0} | 2021-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 10380000000.0} | 2020-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 9183000000.0} | 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": -2000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": -497000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 903000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 589000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 37230000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 22008000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 15730000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": -3594000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 24664000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 15708000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForReconcileProfitLoss | {"amount": 31559000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": -527000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 194000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 197000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 537000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 405000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 502000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 608000000.0} | 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:AmountReportedInProfitOrLossApplyingIFRS9FinancialAssetsToWhichOverlayApproachIsApplied | {"amount": -526000000.0} | 2022-12-31 | esef |
| ifrs:AmountReportedInProfitOrLossApplyingIFRS9FinancialAssetsToWhichOverlayApproachIsApplied | {"amount": 168000000.0} | 2021-12-31 | esef |
| ifrs:AmountReportedInProfitOrLossApplyingIFRS9FinancialAssetsToWhichOverlayApproachIsApplied | {"amount": -192000000.0} | 2020-12-31 | esef |
| ifrs:AmountReportedInProfitOrLossApplyingIFRS9FinancialAssetsToWhichOverlayApproachIsApplied | {"amount": 445000000.0} | 2019-12-31 | esef |
| ifrs:Assets | {"amount": 2374307000000.0} | 2025-12-31 | esef |
| ifrs:Assets | {"amount": 2309782000000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 2189398000000.0} | 2023-12-31 | esef |
| ifrs:Assets | {"amount": 2167621000000.0} | 2022-12-31 | esef |
| ifrs:Assets | {"amount": 2073955000000.0} | 2021-12-31 | esef |
| ifrs:Assets | {"amount": 1961062000000.0} | 2020-12-31 | esef |
| ifrs:Assets | {"amount": 1767643000000.0} | 2019-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 2.18} | 2025-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 2.109} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 1.943} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 1.681} | 2022-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 1836000.0} | 2021-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 804000.0} | 2020-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 1482000.0} | 2019-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 164844000000.0} | 2025-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 162339000000.0} | 2024-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 177320000000.0} | 2023-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 207648000000.0} | 2022-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 237757000000.0} | 2021-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 194269000000.0} | 2020-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 93079000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 155561000000.0} | 2022-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 159729000000.0} | 2021-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 151213000000.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 90776000000.0} | 2020-01-01 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 90776000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 74185000000.0} | 2019-01-01 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 135781000000.0} | 2025-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 133146000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 142584000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 155431000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 16546000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 1570000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -1701000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 7684000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 2206000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -4491000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 9447000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 114000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": -3000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": -125000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": -9000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -4402000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -1782000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": 9852000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -5058000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -838000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -3228000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": 6282000000.0} | 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": -386000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": -100000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": -2000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 19012000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": -15909000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": -36512000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 594000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 10930000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 57289000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 6837000000.0} | 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": 0.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": -116000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 25000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 97000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations | {"amount": 32000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 6997000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 8634000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 7581000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": -322000000.0} | 2022-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 6413000000.0} | 2021-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 2457000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 7129000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 948000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 1082000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 935000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 826000000.0} | 2022-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 1083000000.0} | 2021-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 443000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 665000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 6049000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 7552000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 6646000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": -1148000000.0} | 2022-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 5330000000.0} | 2021-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 2014000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 6464000000.0} | 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": 91324000000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsHeldAtAmortisedCost | {"amount": 88971000000.0} | 2024-12-31 | esef |
| ifrs:DebtInstrumentsHeldMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 227981000000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsHeldMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 217494000000.0} | 2024-12-31 | esef |
| ifrs:DebtInstrumentsIssuedAtAmortisedCost | {"amount": 285073000000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsIssuedAtAmortisedCost | {"amount": 284512000000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 16360000000.0} | 2025-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 19194000000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 20453000000.0} | 2023-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 31867000000.0} | 2022-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 14125000000.0} | 2021-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 21745000000.0} | 2020-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 19368000000.0} | 2019-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 23660000000.0} | 2025-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 27261000000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 30992000000.0} | 2023-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 45636000000.0} | 2022-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 12358000000.0} | 2021-12-31 | esef |