| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 2048000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2025-12-31 | esef |
| cash_and_equivalents | {"amount": 2924000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2024-12-31 | esef |
| cash_and_equivalents | {"amount": 2912000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2023-12-31 | esef |
| cash_and_equivalents | {"amount": 3555000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-12-31 | esef |
| cashflow_operating | {"amount": 2538000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2025-12-31 | esef |
| cashflow_operating | {"amount": 3251000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2024-12-31 | esef |
| cashflow_operating | {"amount": 3493000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-12-31 | esef |
| current_assets | {"amount": 10498000000.0, "concept": "ifrs-full:CurrentAssets"} | 2025-12-31 | esef |
| current_assets | {"amount": 9186000000.0, "concept": "ifrs-full:CurrentAssets"} | 2024-12-31 | esef |
| current_assets | {"amount": 10880000000.0, "concept": "ifrs-full:CurrentAssets"} | 2023-12-31 | esef |
| current_liabilities | {"amount": 11518000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2025-12-31 | esef |
| current_liabilities | {"amount": 11511000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2024-12-31 | esef |
| current_liabilities | {"amount": 16020000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2023-12-31 | esef |
| entity_legal_form | {"value": "P418", "elf_code": "P418"} | | gleif |
| eps_basic | {"amount": 0.01, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2025-12-31 | esef |
| eps_basic | {"amount": -0.03, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_basic | {"amount": -0.07, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2023-12-31 | esef |
| eps_diluted | {"amount": 0.01, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2025-12-31 | esef |
| eps_diluted | {"amount": -0.03, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_diluted | {"amount": -0.07, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2023-12-31 | esef |
| headquarters_address | {"city": "MILANO", "region": "IT-MI", "street": "VIA GAETANO NEGRI, 1", "country": "IT", " | | gleif |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": -12000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": -23000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": -11000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables | {"amount": -232000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables | {"amount": 138000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables | {"amount": -5000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDeferredTaxExpense | {"amount": -40000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDeferredTaxExpense | {"amount": 82000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDeferredTaxExpense | {"amount": 154000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 2938000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 3189000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 3292000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 69000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 94000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": -6000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": -9000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": -12000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": -264000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": -98000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": -80000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": 28000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": -4000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": -73000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": -35000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": -23000000.0} | 2025-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": -20000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": -29000000.0} | 2023-12-31 | esef |
| ifrs:Assets | {"amount": 36734000000.0} | 2025-12-31 | esef |
| ifrs:Assets | {"amount": 37663000000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 62159000000.0} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": -0.03} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": -0.07} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 0.01} | 2025-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": 0.02} | 2025-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -0.01} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.06} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.01} | 2025-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.03} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 2048000000.0} | 2025-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 2924000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 2912000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 3555000000.0} | 2022-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 2104000000.0} | 2025-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 2924000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 2912000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 3555000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 0.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 4169000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesContinuingOperations | {"amount": -2022000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesContinuingOperations | {"amount": -7255000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesContinuingOperations | {"amount": -241000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesContinuingOperations | {"amount": -1378000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesContinuingOperations | {"amount": 5361000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesContinuingOperations | {"amount": -2822000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 2538000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 3251000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 3493000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 1000000.0} | 2025-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 4000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": -19000000.0} | 2023-12-31 | esef |
| ifrs:ChangesInInventoriesOfFinishedGoodsAndWorkInProgress | {"amount": -12000000.0} | 2025-12-31 | esef |
| ifrs:ChangesInInventoriesOfFinishedGoodsAndWorkInProgress | {"amount": -10000000.0} | 2024-12-31 | esef |
| ifrs:ChangesInInventoriesOfFinishedGoodsAndWorkInProgress | {"amount": -26000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 557000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": -1091000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": -1035000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 251000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": -34000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 397000000.0} | 2023-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 306000000.0} | 2025-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": -1057000000.0} | 2024-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": -1432000000.0} | 2023-12-31 | esef |
| ifrs:CurrentAssets | {"amount": 10498000000.0} | 2025-12-31 | esef |
| ifrs:CurrentAssets | {"amount": 9186000000.0} | 2024-12-31 | esef |
| ifrs:CurrentAssets | {"amount": 10880000000.0} | 2023-12-31 | esef |
| ifrs:CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners | {"amount": 9271000000.0} | 2025-12-31 | esef |
| ifrs:CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners | {"amount": 9186000000.0} | 2024-12-31 | esef |
| ifrs:CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners | {"amount": 10880000000.0} | 2023-12-31 | esef |
| ifrs:CurrentFinanceLeaseReceivables | {"amount": 44000000.0} | 2025-12-31 | esef |
| ifrs:CurrentFinanceLeaseReceivables | {"amount": 44000000.0} | 2024-12-31 | esef |
| ifrs:CurrentFinanceLeaseReceivables | {"amount": 162000000.0} | 2023-12-31 | esef |
| ifrs:CurrentFinancialAssets | {"amount": 3630000000.0} | 2025-12-31 | esef |
| ifrs:CurrentFinancialAssets | {"amount": 4619000000.0} | 2024-12-31 | esef |
| ifrs:CurrentFinancialAssets | {"amount": 5645000000.0} | 2023-12-31 | esef |
| ifrs:CurrentLeaseLiabilities | {"amount": 515000000.0} | 2025-12-31 | esef |
| ifrs:CurrentLeaseLiabilities | {"amount": 523000000.0} | 2024-12-31 | esef |
| ifrs:CurrentLeaseLiabilities | {"amount": 838000000.0} | 2023-12-31 | esef |
| ifrs:CurrentLiabilities | {"amount": 11518000000.0} | 2025-12-31 | esef |
| ifrs:CurrentLiabilities | {"amount": 11511000000.0} | 2024-12-31 | esef |
| ifrs:CurrentLiabilities | {"amount": 16020000000.0} | 2023-12-31 | esef |
| ifrs:CurrentLiabilitiesOtherThanLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale | {"amount": 10922000000.0} | 2025-12-31 | esef |
| ifrs:CurrentLiabilitiesOtherThanLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale | {"amount": 11511000000.0} | 2024-12-31 | esef |
| ifrs:CurrentLiabilitiesOtherThanLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale | {"amount": 16020000000.0} | 2023-12-31 | esef |
| ifrs:CurrentTaxAssetsCurrent | {"amount": 89000000.0} | 2025-12-31 | esef |
| ifrs:CurrentTaxAssetsCurrent | {"amount": 124000000.0} | 2024-12-31 | esef |
| ifrs:CurrentTaxAssetsCurrent | {"amount": 191000000.0} | 2023-12-31 | esef |
| ifrs:CurrentTaxLiabilitiesCurrent | {"amount": 63000000.0} | 2025-12-31 | esef |
| ifrs:CurrentTaxLiabilitiesCurrent | {"amount": 44000000.0} | 2024-12-31 | esef |
| ifrs:CurrentTaxLiabilitiesCurrent | {"amount": 27000000.0} | 2023-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 510000000.0} | 2025-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 513000000.0} | 2024-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 701000000.0} | 2023-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 55000000.0} | 2025-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 61000000.0} | 2024-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 83000000.0} | 2023-12-31 | esef |
| ifrs:DepreciationAndAmortisationExpense | {"amount": 2938000000.0} | 2025-12-31 | esef |
| ifrs:DepreciationAndAmortisationExpense | {"amount": 3189000000.0} | 2024-12-31 | esef |
| ifrs:DepreciationAndAmortisationExpense | {"amount": 3292000000.0} | 2023-12-31 | esef |
| ifrs:DilutedEarningsLossPerShare | {"amount": 0.01} | 2025-12-31 | esef |
| ifrs:DilutedEarningsLossPerShare | {"amount": -0.03} | 2024-12-31 | esef |
| ifrs:DilutedEarningsLossPerShare | {"amount": -0.07} | 2023-12-31 | esef |
| ifrs:DilutedEarningsLossPerShareFromContinuingOperations | {"amount": 0.02} | 2025-12-31 | esef |
| ifrs:DilutedEarningsLossPerShareFromContinuingOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:DilutedEarningsLossPerShareFromContinuingOperations | {"amount": -0.01} | 2023-12-31 | esef |
| ifrs:DilutedEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.01} | 2025-12-31 | esef |
| ifrs:DilutedEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.03} | 2024-12-31 | esef |
| ifrs:DilutedEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.06} | 2023-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 273000000.0} | 2025-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 159000000.0} | 2024-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 273000000.0} | 2023-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsInvestingActivities | {"amount": 2000000.0} | 2025-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsInvestingActivities | {"amount": 19000000.0} | 2024-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsInvestingActivities | {"amount": 20000000.0} | 2023-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears | {"amount": 158000000.0} | 2024-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears | {"amount": 317000000.0} | 2025-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears | {"amount": 197000000.0} | 2023-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": -8000000.0} | 2025-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": -101000000.0} | 2024-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 18000000.0} | 2023-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 1474000000.0} | 2025-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 1478000000.0} | 2024-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 1950000000.0} | 2023-12-31 | esef |
| ifrs:Equity | {"amount": 13455000000.0} | 2025-12-31 | esef |
| ifrs:Equity | {"amount": 13361000000.0} | 2024-12-31 | esef |
| ifrs:Equity | {"amount": 17513000000.0} | 2023-12-31 | esef |
| ifrs:Equity | {"amount": 18725000000.0} | 2022-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 36734000000.0} | 2025-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 37663000000.0} | 2024-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 62159000000.0} | 2023-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 12219000000.0} | 2025-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 11957000000.0} | 2024-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 13646000000.0} | 2023-12-31 | esef |
| ifrs:FairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 120000000.0} | 2025-12-31 | esef |
| ifrs:FairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 150000000.0} | 2024-12-31 | esef |
| ifrs:FairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 140000000.0} | 2023-12-31 | esef |
| ifrs:FinanceCosts | {"amount": 1839000000.0} | 2025-12-31 | esef |
| ifrs:FinanceCosts | {"amount": 2387000000.0} | 2024-12-31 | esef |
| ifrs:FinanceCosts | {"amount": 2639000000.0} | 2023-12-31 | esef |
| ifrs:FinanceIncome | {"amount": 938000000.0} | 2025-12-31 | esef |
| ifrs:FinanceIncome | {"amount": 1044000000.0} | 2024-12-31 | esef |
| ifrs:FinanceIncome | {"amount": 1235000000.0} | 2023-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": -177000000.0} | 2025-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": -127000000.0} | 2024-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": -382000000.0} | 2023-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfNoncurrentAssets | {"amount": 5000000.0} | 2025-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfNoncurrentAssets | {"amount": 3000000.0} | 2024-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfNoncurrentAssets | {"amount": -11000000.0} | 2023-12-31 | esef |
| ifrs:GainsLossesOnExchangeDifferencesOnTranslationBeforeTax | {"amount": -23000000.0} | 2025-12-31 | esef |
| ifrs:GainsLossesOnExchangeDifferencesOnTranslationBeforeTax | {"amount": -760000000.0} | 2024-12-31 | esef |
| ifrs:GainsLossesOnExchangeDifferencesOnTranslationBeforeTax | {"amount": 189000000.0} | 2023-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 45000000.0} | 2025-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 10000000.0} | 2024-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 43000000.0} | 2023-12-31 | esef |
| ifrs:Goodwill | {"amount": 11025000000.0} | 2025-12-31 | esef |
| ifrs:Goodwill | {"amount": 11030000000.0} | 2024-12-31 | esef |
| ifrs:Goodwill | {"amount": 19170000000.0} | 2023-12-31 | esef |
| ifrs:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 69000000.0} | 2025-12-31 | esef |
| ifrs:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 94000000.0} | 2024-12-31 | esef |
| ifrs:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxesPaidRefund | {"amount": 78000000.0} | 2025-12-31 | esef |
| ifrs:IncomeTaxesPaidRefund | {"amount": 30000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxesPaidRefund | {"amount": 71000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 112000000.0} | 2025-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 174000000.0} | 2024-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 56000000.0} | 2023-12-31 | esef |
| ifrs:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome | {"amount": 15000000.0} | 2025-12-31 | esef |
| ifrs:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome | {"amount": 1000000.0} | 2024-12-31 | esef |