| cash_and_equivalents | {"amount": 18113000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2024-12-31 | esef |
| cash_and_equivalents | {"amount": 11877000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2023-12-31 | esef |
| cash_and_equivalents | {"amount": 12896000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-12-31 | esef |
| cashflow_financing | {"amount": 2048000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2024-12-31 | esef |
| cashflow_financing | {"amount": 1485000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2023-12-31 | esef |
| cashflow_investing | {"amount": -157000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2024-12-31 | esef |
| cashflow_investing | {"amount": -461000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2023-12-31 | esef |
| cashflow_operating | {"amount": 4344000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2024-12-31 | esef |
| cashflow_operating | {"amount": -2043000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-12-31 | esef |
| entity_legal_form | {"value": "ZRPO", "elf_code": "ZRPO"} | | gleif |
| headquarters_address | {"city": "København", "region": "DK-84", "street": "Sluseholmen 3", "country": "DK", "form | | gleif |
| ifrs:AccrualsAndDeferredIncomeIncludingContractLiabilities | {"amount": 82000000.0} | 2024-12-31 | esef |
| ifrs:AccrualsAndDeferredIncomeIncludingContractLiabilities | {"amount": 83000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanks | {"amount": -5634000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanks | {"amount": -3423000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"amount": 6000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment | {"amount": -6000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty | {"amount": 21000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty | {"amount": -1000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromBanks | {"amount": 3654000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromBanks | {"amount": 3862000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForInterestIncome | {"amount": 3397000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForInterestIncome | {"amount": 3332000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": -140000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": -26000000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 126976000000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 116999000000.0} | 2023-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 18058000000.0} | 2024-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 11597000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 18113000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 11877000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 12896000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 2048000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 1485000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -157000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -461000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 4344000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": -2043000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 1617000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 1922000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 240000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 263000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 1319000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 1614000000.0} | 2023-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 121000000.0} | 2024-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 32000000.0} | 2023-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 225000000.0} | 2024-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 151000000.0} | 2023-12-31 | esef |
| ifrs:DepositsFromCustomers | {"amount": 80486000000.0} | 2024-12-31 | esef |
| ifrs:DepositsFromCustomers | {"amount": 76915000000.0} | 2023-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 664000000.0} | 2024-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 246000000.0} | 2023-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsOperatingActivities | {"amount": 108000000.0} | 2024-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsOperatingActivities | {"amount": 53000000.0} | 2023-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears | {"amount": 666000000.0} | 2024-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears | {"amount": 247000000.0} | 2023-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 45000000.0} | 2024-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 1000000.0} | 2023-12-31 | esef |
| ifrs:Equity | {"amount": 14850000000.0} | 2024-12-31 | esef |
| ifrs:Equity | {"amount": 13972000000.0} | 2023-12-31 | esef |
| ifrs:Equity | {"amount": 12348000000.0} | 2022-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 126976000000.0} | 2024-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 116999000000.0} | 2023-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 12032000000.0} | 2024-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 11236000000.0} | 2023-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 104000000.0} | 2024-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 92000000.0} | 2023-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 1510000000.0} | 2024-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 1500000000.0} | 2023-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 4803000000.0} | 2024-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 4740000000.0} | 2023-12-31 | esef |
| ifrs:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss | {"amount": 520000000.0} | 2024-12-31 | esef |
| ifrs:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss | {"amount": 656000000.0} | 2023-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": -51000000.0} | 2024-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": -181000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 642000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 256000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 575000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 673000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxRelatingToChangesInRevaluationSurplusOfOtherComprehensiveIncome | {"amount": -5000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxRelatingToChangesInRevaluationSurplusOfOtherComprehensiveIncome | {"amount": 20000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss | {"amount": -12000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss | {"amount": 20000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": -7000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalents | {"amount": 6236000000.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalents | {"amount": -1019000000.0} | 2023-12-31 | esef |
| ifrs:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl | {"amount": -15000000.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransactionsWithOwners | {"amount": -739000000.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransactionsWithOwners | {"amount": -298000000.0} | 2023-12-31 | esef |
| ifrs:IntangibleAssetsOtherThanGoodwill | {"amount": 156000000.0} | 2024-12-31 | esef |
| ifrs:IntangibleAssetsOtherThanGoodwill | {"amount": 189000000.0} | 2023-12-31 | esef |
| ifrs:InterestPaidClassifiedAsFinancingActivities | {"amount": 6000000.0} | 2024-12-31 | esef |
| ifrs:InterestPaidClassifiedAsFinancingActivities | {"amount": -5000000.0} | 2023-12-31 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 1270000000.0} | 2024-12-31 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 679000000.0} | 2023-12-31 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 4658000000.0} | 2024-12-31 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 3867000000.0} | 2023-12-31 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 3702000000.0} | 2024-12-31 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 3191000000.0} | 2023-12-31 | esef |
| ifrs:InterestRevenueExpense | {"amount": 3290000000.0} | 2024-12-31 | esef |
| ifrs:InterestRevenueExpense | {"amount": 3279000000.0} | 2023-12-31 | esef |
| ifrs:InvestmentProperty | {"amount": 475000000.0} | 2024-12-31 | esef |
| ifrs:InvestmentProperty | {"amount": 179000000.0} | 2023-12-31 | esef |
| ifrs:InvestmentsInAssociatesAccountedForUsingEquityMethod | {"amount": 109000000.0} | 2024-12-31 | esef |
| ifrs:InvestmentsInAssociatesAccountedForUsingEquityMethod | {"amount": 109000000.0} | 2023-12-31 | esef |
| ifrs:InvestmentsInSubsidiaries | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:InvestmentsInSubsidiaries | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 2100000000.0} | 2024-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 2100000000.0} | 2023-12-31 | esef |
| ifrs:LandAndBuildings | {"amount": 2590000000.0} | 2024-12-31 | esef |
| ifrs:LandAndBuildings | {"amount": 2552000000.0} | 2023-12-31 | esef |
| ifrs:LoansAndAdvancesToBanks | {"amount": 570000000.0} | 2024-12-31 | esef |
| ifrs:LoansAndAdvancesToBanks | {"amount": 325000000.0} | 2023-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 1833000000.0} | 2024-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 1751000000.0} | 2023-12-31 | esef |
| ifrs:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale | {"amount": 11000000.0} | 2024-12-31 | esef |
| ifrs:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale | {"amount": 36000000.0} | 2023-12-31 | esef |
| ifrs:OtherAdjustmentsToReconcileProfitLoss | {"amount": -22000000.0} | 2024-12-31 | esef |
| ifrs:OtherAdjustmentsToReconcileProfitLoss | {"amount": 1000000.0} | 2023-12-31 | esef |
| ifrs:OtherAssets | {"amount": 1712000000.0} | 2024-12-31 | esef |
| ifrs:OtherAssets | {"amount": 1707000000.0} | 2023-12-31 | esef |
| ifrs:OtherComprehensiveIncome | {"amount": -17000000.0} | 2024-12-31 | esef |
| ifrs:OtherComprehensiveIncome | {"amount": 84000000.0} | 2023-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": -27000000.0} | 2024-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans | {"amount": -2000000.0} | 2024-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans | {"amount": -1000000.0} | 2023-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation | {"amount": -1000000.0} | 2024-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRevaluation | {"amount": 104000000.0} | 2023-12-31 | esef |
| ifrs:OtherExpenseByNature | {"amount": 46000000.0} | 2024-12-31 | esef |
| ifrs:OtherExpenseByNature | {"amount": 53000000.0} | 2023-12-31 | esef |
| ifrs:OtherIncome | {"amount": 62000000.0} | 2024-12-31 | esef |
| ifrs:OtherIncome | {"amount": 73000000.0} | 2023-12-31 | esef |
| ifrs:OtherIncomeExpenseFromSubsidiariesJointlyControlledEntitiesAndAssociates | {"amount": -26000000.0} | 2024-12-31 | esef |
| ifrs:OtherIncomeExpenseFromSubsidiariesJointlyControlledEntitiesAndAssociates | {"amount": -140000000.0} | 2023-12-31 | esef |
| ifrs:OtherIndividuallyImmaterialComponentsOfOtherComprehensiveIncomeBeforeTax | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:OtherIndividuallyImmaterialComponentsOfOtherComprehensiveIncomeBeforeTax | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:OtherLiabilities | {"amount": 3449000000.0} | 2024-12-31 | esef |
| ifrs:OtherLiabilities | {"amount": 2970000000.0} | 2023-12-31 | esef |
| ifrs:OtherPropertyPlantAndEquipment | {"amount": 130000000.0} | 2024-12-31 | esef |
| ifrs:OtherPropertyPlantAndEquipment | {"amount": 130000000.0} | 2023-12-31 | esef |
| ifrs:OtherProvisions | {"amount": 119000000.0} | 2024-12-31 | esef |
| ifrs:OtherProvisions | {"amount": 156000000.0} | 2023-12-31 | esef |
| ifrs:PaymentsFromChangesInOwnershipInterestsInSubsidiaries | {"amount": 15000000.0} | 2024-12-31 | esef |
| ifrs:PaymentsFromChangesInOwnershipInterestsInSubsidiaries | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities | {"amount": 46000000.0} | 2024-12-31 | esef |
| ifrs:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities | {"amount": 37000000.0} | 2023-12-31 | esef |
| ifrs:PaymentsToAcquireOrRedeemEntitysShares | {"amount": 4000000.0} | 2024-12-31 | esef |
| ifrs:PaymentsToAcquireOrRedeemEntitysShares | {"amount": 3000000.0} | 2023-12-31 | esef |
| ifrs:PrepaymentsAndAccruedIncomeIncludingContractAssets | {"amount": 88000000.0} | 2024-12-31 | esef |
| ifrs:PrepaymentsAndAccruedIncomeIncludingContractAssets | {"amount": 83000000.0} | 2023-12-31 | esef |
| ifrs:ProceedsFromIssueOfBondsNotesAndDebentures | {"amount": 3443000000.0} | 2024-12-31 | esef |
| ifrs:ProceedsFromIssueOfBondsNotesAndDebentures | {"amount": 1850000000.0} | 2023-12-31 | esef |
| ifrs:ProceedsFromSaleOrIssueOfTreasuryShares | {"amount": 3000000.0} | 2024-12-31 | esef |
| ifrs:ProceedsFromSaleOrIssueOfTreasuryShares | {"amount": 2000000.0} | 2023-12-31 | esef |
| ifrs:ProceedsFromSalesOfInterestsInAssociates | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:ProceedsFromSalesOfInterestsInAssociates | {"amount": 1000000.0} | 2023-12-31 | esef |
| ifrs:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities | {"amount": 294000000.0} | 2024-12-31 | esef |
| ifrs:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities | {"amount": 32000000.0} | 2023-12-31 | esef |
| ifrs:ProfitLoss | {"amount": 1634000000.0} | 2024-12-31 | esef |
| ifrs:ProfitLoss | {"amount": 1838000000.0} | 2023-12-31 | esef |
| ifrs:ProfitLossAttributableToNoncontrollingInterests | {"amount": 241000000.0} | 2024-12-31 | esef |
| ifrs:ProfitLossAttributableToNoncontrollingInterests | {"amount": 261000000.0} | 2023-12-31 | esef |
| ifrs:ProfitLossAttributableToOwnersOfParent | {"amount": 1335000000.0} | 2024-12-31 | esef |
| ifrs:ProfitLossAttributableToOwnersOfParent | {"amount": 1530000000.0} | 2023-12-31 | esef |
| ifrs:ProfitLossBeforeTax | {"amount": 2209000000.0} | 2024-12-31 | esef |
| ifrs:ProfitLossBeforeTax | {"amount": 2511000000.0} | 2023-12-31 | esef |
| ifrs:Provisions | {"amount": 402000000.0} | 2024-12-31 | esef |
| ifrs:Provisions | {"amount": 351000000.0} | 2023-12-31 | esef |
| ifrs:ProvisionsForEmployeeBenefits | {"amount": 15000000.0} | 2024-12-31 | esef |
| ifrs:ProvisionsForEmployeeBenefits | {"amount": 15000000.0} | 2023-12-31 | esef |
| ifrs:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities | {"amount": 12000000.0} | 2024-12-31 | esef |
| ifrs:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities | {"amount": 16000000.0} | 2023-12-31 | esef |
| ifrs:PurchaseOfInterestsInAssociates | {"amount": 35000000.0} | 2024-12-31 | esef |
| ifrs:PurchaseOfInterestsInAssociates | {"amount": 43000000.0} | 2023-12-31 | esef |
| ifrs:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities | {"amount": 404000000.0} | 2024-12-31 | esef |
| ifrs:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities | {"amount": 435000000.0} | 2023-12-31 | esef |
| ifrs:PurchaseOfTreasuryShares | {"amount": 4000000.0} | 2024-12-31 | esef |
| ifrs:PurchaseOfTreasuryShares | {"amount": 3000000.0} | 2023-12-31 | esef |
| ifrs:RepaymentsOfBondsNotesAndDebentures | {"amount": 610000000.0} | 2024-12-31 | esef |
| ifrs:RepaymentsOfBondsNotesAndDebentures | {"amount": 30000000.0} | 2023-12-31 | esef |
| ifrs:RetainedEarnings | {"amount": 8366000000.0} | 2024-12-31 | esef |
| ifrs:RetainedEarnings | {"amount": 7511000000.0} | 2023-12-31 | esef |
| ifrs:RevaluationSurplus | {"amount": 518000000.0} | 2024-12-31 | esef |
| ifrs:RevaluationSurplus | {"amount": 589000000.0} | 2023-12-31 | esef |
| ifrs:RevenueFromDividends | {"amount": 108000000.0} | 2024-12-31 | esef |
| ifrs:RevenueFromDividends | {"amount": 53000000.0} | 2023-12-31 | esef |
| ifrs:SaleOrIssueOfTreasuryShares | {"amount": 3000000.0} | 2024-12-31 | esef |
| ifrs:SaleOrIssueOfTreasuryShares | {"amount": 2000000.0} | 2023-12-31 | esef |
| ifrs:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:SubordinatedLiabilities | {"amount": 1275000000.0} | 2024-12-31 | esef |
| ifrs:SubordinatedLiabilities | {"amount": 1275000000.0} | 2023-12-31 | esef |
| income_tax_expense | {"amount": 575000000.0, "concept": "ifrs-full:IncomeTaxExpenseContinuingOperations"} | 2024-12-31 | esef |
| income_tax_expense | {"amount": 673000000.0, "concept": "ifrs-full:IncomeTaxExpenseContinuingOperations"} | 2023-12-31 | esef |