| cash_and_equivalents | {"amount": 951280000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2025-12-31 | esef |
| cash_and_equivalents | {"amount": 954036000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2024-12-31 | esef |
| cash_and_equivalents | {"amount": 766628000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2023-12-31 | esef |
| cash_and_equivalents | {"amount": 1208347000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-12-31 | esef |
| cashflow_financing | {"amount": 15000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2025-12-31 | esef |
| cashflow_financing | {"amount": 0.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2024-12-31 | esef |
| cashflow_financing | {"amount": 0.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2023-12-31 | esef |
| cashflow_investing | {"amount": -8137000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2025-12-31 | esef |
| cashflow_investing | {"amount": -71956000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2024-12-31 | esef |
| cashflow_investing | {"amount": -9839000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2023-12-31 | esef |
| cashflow_operating | {"amount": 5366000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2025-12-31 | esef |
| cashflow_operating | {"amount": 259364000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2024-12-31 | esef |
| cashflow_operating | {"amount": -431882000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-12-31 | esef |
| controlled_by | {"lei": "81560087340FCB8D6D66", "meaning": "oberste Konsolidierung (Konzernspitze)", "enti | | gleif |
| entity_legal_form | {"value": "X32V", "elf_code": "X32V"} | | gleif |
| headquarters_address | {"city": "ROMA", "region": "IT-RM", "street": "VIALE AMERICA, 351", "country": "IT", "form | | gleif |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": -5082000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": -6064000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": 10592000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": 6763000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": 9272000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsMeasuredAtAmortisedCost | {"amount": -1014650000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsMeasuredAtAmortisedCost | {"amount": -233533000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": -694258000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 824663000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherFinancialAssets | {"amount": 3275000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherFinancialAssets | {"amount": 263349000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": -12000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": 13000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": -59000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesMeasuredAtAmortisedCost | {"amount": 1440763000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesMeasuredAtAmortisedCost | {"amount": -354844000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherFinancialLiabilities | {"amount": 112980000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherFinancialLiabilities | {"amount": -344034000.0} | 2024-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 315547000.0} | 2025-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 306017000.0} | 2024-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 298891000.0} | 2023-12-31 | esef |
| ifrs:Assets | {"amount": 15988180000.0} | 2025-12-31 | esef |
| ifrs:Assets | {"amount": 14278312000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 14770877000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 951280000.0} | 2025-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 954036000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 766628000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 1208347000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 15000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -8137000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -71956000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -9839000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 5366000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 259364000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": -431882000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperations | {"amount": 151758000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperations | {"amount": 103051000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperations | {"amount": 135485000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 81378000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 108597000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 117942000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 2951000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 4181000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 4266000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 78427000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 104416000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 113676000.0} | 2023-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 84136000.0} | 2025-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 80984000.0} | 2024-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 89538000.0} | 2023-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 9027000.0} | 2025-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 10445000.0} | 2024-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 2799000.0} | 2023-12-31 | esef |
| ifrs:DebtInstrumentsIssuedAtAmortisedCost | {"amount": 1532709000.0} | 2025-12-31 | esef |
| ifrs:DebtInstrumentsIssuedAtAmortisedCost | {"amount": 1097227000.0} | 2024-12-31 | esef |
| ifrs:DebtSecurities | {"amount": 1097227000.0} | 2024-12-31 | esef |
| ifrs:DebtSecurities | {"amount": 962508000.0} | 2023-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 173996000.0} | 2025-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 173327000.0} | 2024-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 210567000.0} | 2023-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 2683000.0} | 2025-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 4781000.0} | 2024-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 9583000.0} | 2023-12-31 | esef |
| ifrs:DepositsFromBanks | {"amount": 1156799000.0} | 2024-12-31 | esef |
| ifrs:DepositsFromBanks | {"amount": 2176565000.0} | 2023-12-31 | esef |
| ifrs:DepositsFromBanksAtAmortisedCost | {"amount": 1224783000.0} | 2025-12-31 | esef |
| ifrs:DepositsFromBanksAtAmortisedCost | {"amount": 1156799000.0} | 2024-12-31 | esef |
| ifrs:DepositsFromCustomers | {"amount": 9099817000.0} | 2024-12-31 | esef |
| ifrs:DepositsFromCustomers | {"amount": 9922455000.0} | 2023-12-31 | esef |
| ifrs:DepositsFromCustomersAtAmortisedCost | {"amount": 10043753000.0} | 2025-12-31 | esef |
| ifrs:DepositsFromCustomersAtAmortisedCost | {"amount": 9099817000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 49094000.0} | 2025-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 28217000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 30532000.0} | 2023-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 2818000.0} | 2025-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 4640000.0} | 2024-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 11736000.0} | 2023-12-31 | esef |
| ifrs:DividendsPaid | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:DividendsPaid | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:DividendsPaid | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 15988180000.0} | 2025-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 14278312000.0} | 2024-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 14770877000.0} | 2023-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 8741000.0} | 2025-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 6883000.0} | 2024-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 7618000.0} | 2023-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 198177000.0} | 2025-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 167228000.0} | 2024-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 159142000.0} | 2023-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 189436000.0} | 2025-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 160345000.0} | 2024-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 151524000.0} | 2023-12-31 | esef |
| ifrs:FinancialAssetsAtAmortisedCost | {"amount": 9740954000.0} | 2025-12-31 | esef |
| ifrs:FinancialAssetsAtAmortisedCost | {"amount": 8823075000.0} | 2024-12-31 | esef |
| ifrs:FinancialAssetsAtAmortisedCost | {"amount": 9927237000.0} | 2023-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLoss | {"amount": 92320000.0} | 2025-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLoss | {"amount": 94287000.0} | 2024-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLoss | {"amount": 102012000.0} | 2023-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 5074000.0} | 2025-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 15325000.0} | 2024-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 18798000.0} | 2023-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": 78962000.0} | 2024-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": 83214000.0} | 2023-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueOtherThanThoseClassifiedAsHeldForTrading | {"amount": 87246000.0} | 2025-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueOtherThanThoseClassifiedAsHeldForTrading | {"amount": 78962000.0} | 2024-12-31 | esef |
| ifrs:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 2785051000.0} | 2025-12-31 | esef |
| ifrs:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 2074325000.0} | 2024-12-31 | esef |
| ifrs:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 3013528000.0} | 2023-12-31 | esef |
| ifrs:FinancialLiabilitiesAtAmortisedCost | {"amount": 12801245000.0} | 2025-12-31 | esef |
| ifrs:FinancialLiabilitiesAtAmortisedCost | {"amount": 11353843000.0} | 2024-12-31 | esef |
| ifrs:FinancialLiabilitiesAtAmortisedCost | {"amount": 13061528000.0} | 2023-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 20000.0} | 2025-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 31000.0} | 2024-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 19000.0} | 2023-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfInvestments | {"amount": 201000.0} | 2025-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfInvestments | {"amount": -3000.0} | 2024-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfInvestments | {"amount": 24000.0} | 2023-12-31 | esef |
| ifrs:Goodwill | {"amount": 1656000.0} | 2025-12-31 | esef |
| ifrs:Goodwill | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 84837000.0} | 2025-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 70741000.0} | 2024-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 48312000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 11627000.0} | 2025-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 12402000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 1035000.0} | 2023-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": -2756000.0} | 2025-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": 187408000.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": -441721000.0} | 2023-12-31 | esef |
| ifrs:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl | {"amount": 766000.0} | 2025-12-31 | esef |
| ifrs:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl | {"amount": -16000.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl | {"amount": 80000.0} | 2023-12-31 | esef |
| ifrs:IncreaseDecreaseThroughSharebasedPaymentTransactions | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:IncreaseDecreaseThroughSharebasedPaymentTransactions | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseThroughSharebasedPaymentTransactions | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTreasuryShareTransactions | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTreasuryShareTransactions | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTreasuryShareTransactions | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 5807000.0} | 2025-12-31 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 2984000.0} | 2024-12-31 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 2371000.0} | 2023-12-31 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 430745000.0} | 2025-12-31 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 493147000.0} | 2024-12-31 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 486101000.0} | 2023-12-31 | esef |
| ifrs:InvestmentAccountedForUsingEquityMethod | {"amount": 614000.0} | 2025-12-31 | esef |
| ifrs:InvestmentAccountedForUsingEquityMethod | {"amount": 857000.0} | 2024-12-31 | esef |
| ifrs:InvestmentAccountedForUsingEquityMethod | {"amount": 455000.0} | 2023-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 204509000.0} | 2025-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 204509000.0} | 2024-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 204509000.0} | 2023-12-31 | esef |
| ifrs:IssueOfEquity | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:IssueOfEquity | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:IssueOfEquity | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale | {"amount": 1246639000.0} | 2025-12-31 | esef |
| ifrs:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale | {"amount": 1230173000.0} | 2024-12-31 | esef |
| ifrs:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:LoansAndAdvancesToBanks | {"amount": 152184000.0} | 2024-12-31 | esef |
| ifrs:LoansAndAdvancesToBanks | {"amount": 219478000.0} | 2023-12-31 | esef |
| ifrs:LoansAndAdvancesToBanksAtAmortisedCost | {"amount": 142357000.0} | 2025-12-31 | esef |
| ifrs:LoansAndAdvancesToBanksAtAmortisedCost | {"amount": 152184000.0} | 2024-12-31 | esef |
| ifrs:LoansAndAdvancesToCustomers | {"amount": 8670891000.0} | 2024-12-31 | esef |
| ifrs:LoansAndAdvancesToCustomers | {"amount": 9707759000.0} | 2023-12-31 | esef |
| ifrs:LoansAndAdvancesToCustomersAtAmortisedCost | {"amount": 9598597000.0} | 2025-12-31 | esef |
| ifrs:LoansAndAdvancesToCustomersAtAmortisedCost | {"amount": 8670891000.0} | 2024-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 33633000.0} | 2025-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 29863000.0} | 2024-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 25909000.0} | 2023-12-31 | esef |
| ifrs:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale | {"amount": 1675205000.0} | 2025-12-31 | esef |
| ifrs:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale | {"amount": 1553948000.0} | 2024-12-31 | esef |
| ifrs:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:OtherAdjustmentsToReconcileProfitLoss | {"amount": -40411000.0} | 2025-12-31 | esef |
| ifrs:OtherAdjustmentsToReconcileProfitLoss | {"amount": -77653000.0} | 2024-12-31 | esef |
| ifrs:OtherAdjustmentsToReconcileProfitLoss | {"amount": -11107000.0} | 2023-12-31 | esef |
| ifrs:OtherAssets | {"amount": 298431000.0} | 2025-12-31 | esef |
| ifrs:OtherAssets | {"amount": 340050000.0} | 2024-12-31 | esef |
| ifrs:OtherAssets | {"amount": 461125000.0} | 2023-12-31 | esef |
| ifrs:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities | {"amount": -6310000.0} | 2025-12-31 | esef |
| ifrs:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities | {"amount": 42000.0} | 2023-12-31 | esef |
| ifrs:OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities | {"amount": -56357000.0} | 2024-12-31 | esef |