| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 68000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2024-12-31 | esef |
| cash_and_equivalents | {"amount": 77000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2023-12-31 | esef |
| cash_and_equivalents | {"amount": 138000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-12-31 | esef |
| cash_and_equivalents | {"amount": 398000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2021-12-31 | esef |
| cash_and_equivalents | {"amount": 585000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-12-31 | esef |
| cash_and_equivalents | {"amount": 107000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-12-31 | esef |
| cashflow_financing | {"amount": -67000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2021-12-31 | esef |
| cashflow_financing | {"amount": -10000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2023-12-31 | esef |
| cashflow_financing | {"amount": 22000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2024-12-31 | esef |
| cashflow_financing | {"amount": -77000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2022-12-31 | esef |
| cashflow_financing | {"amount": -249000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2020-12-31 | esef |
| cashflow_financing | {"amount": -131000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2019-12-31 | esef |
| cashflow_investing | {"amount": -16000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2023-12-31 | esef |
| cashflow_investing | {"amount": -29000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2024-12-31 | esef |
| cashflow_investing | {"amount": -76000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2022-12-31 | esef |
| cashflow_investing | {"amount": -2000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2021-12-31 | esef |
| cashflow_investing | {"amount": 892000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2020-12-31 | esef |
| cashflow_investing | {"amount": -28000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2019-12-31 | esef |
| cashflow_operating | {"amount": -30000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-12-31 | esef |
| cashflow_operating | {"amount": -4000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2024-12-31 | esef |
| cashflow_operating | {"amount": -100000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2022-12-31 | esef |
| cashflow_operating | {"amount": -116000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2021-12-31 | esef |
| cashflow_operating | {"amount": -153000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2020-12-31 | esef |
| cashflow_operating | {"amount": 123000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2019-12-31 | esef |
| current_assets | {"amount": 793000000.0, "concept": "ifrs-full:CurrentAssets"} | 2024-12-31 | esef |
| current_assets | {"amount": 792000000.0, "concept": "ifrs-full:CurrentAssets"} | 2023-12-31 | esef |
| current_assets | {"amount": 1153000000.0, "concept": "ifrs-full:CurrentAssets"} | 2022-12-31 | esef |
| current_assets | {"amount": 1339000000.0, "concept": "ifrs-full:CurrentAssets"} | 2021-12-31 | esef |
| current_assets | {"amount": 1490000000.0, "concept": "ifrs-full:CurrentAssets"} | 2020-12-31 | esef |
| current_assets | {"amount": 1234000000.0, "concept": "ifrs-full:CurrentAssets"} | 2019-12-31 | esef |
| current_liabilities | {"amount": 396000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2024-12-31 | esef |
| current_liabilities | {"amount": 388000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2023-12-31 | esef |
| current_liabilities | {"amount": 585000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2022-12-31 | esef |
| current_liabilities | {"amount": 597000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2021-12-31 | esef |
| current_liabilities | {"amount": 538000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2020-12-31 | esef |
| current_liabilities | {"amount": 761000000.0, "concept": "ifrs-full:CurrentLiabilities"} | 2019-12-31 | esef |
| entity_legal_form | {"value": "R85P", "elf_code": "R85P"} | | gleif |
| eps_basic | {"amount": -0.66, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2023-12-31 | esef |
| eps_basic | {"amount": -0.59, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2024-12-31 | esef |
| eps_basic | {"amount": -1.41, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2022-12-31 | esef |
| eps_basic | {"amount": -0.11, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2021-12-31 | esef |
| eps_diluted | {"amount": -0.11, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2021-12-31 | esef |
| eps_diluted | {"amount": -1.41, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2022-12-31 | esef |
| headquarters_address | {"city": "MORTSEL", "region": "BE-VAN", "street": "SEPTESTRAAT 27", "country": "BE", "form | | gleif |
| ifrs:AdjustmentsForDecreaseIncreaseInContractAssets | {"amount": 10000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInContractAssets | {"amount": -8000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInContractAssets | {"amount": -14000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInContractAssets | {"amount": -8000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": 23000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": -13000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": -65000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": -48000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": 25000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInInventories | {"amount": 50000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"amount": -22000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"amount": -3000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"amount": 25000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"amount": 6000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"amount": 50000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable | {"amount": 4000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForFinanceIncomeCost | {"amount": -26000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForFinanceIncomeCost | {"amount": -26000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForFinanceIncomeCost | {"amount": -19000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForFinanceIncomeCost | {"amount": -8000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForFinanceIncomeCost | {"amount": -31000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForFinanceIncomeCost | {"amount": -38000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill | {"amount": 70000000.0} | 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": 35000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories | {"amount": 13000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories | {"amount": 10000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories | {"amount": 12000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories | {"amount": 11000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories | {"amount": 12000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories | {"amount": 14000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | {"amount": 3000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | {"amount": 19000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | {"amount": 26000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | {"amount": 2000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | {"amount": 27000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"amount": -1000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"amount": 1000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"amount": 2000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"amount": 2000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeAndOtherReceivables | {"amount": 4000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncomeTaxExpense | {"amount": 21000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncomeTaxExpense | {"amount": 15000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncomeTaxExpense | {"amount": 42000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForIncomeTaxExpense | {"amount": 15000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForIncomeTaxExpense | {"amount": 8000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncomeTaxExpense | {"amount": 28000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInContractLiabilities | {"amount": 5000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInContractLiabilities | {"amount": 3000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInContractLiabilities | {"amount": -8000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInContractLiabilities | {"amount": 3000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": 60000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": 57000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": 70000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": 75000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": 65000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities | {"amount": 91000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": -10000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": -7000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": -7000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": 38000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": 2000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAccountPayable | {"amount": 19000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForProvisions | {"amount": 1000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForProvisions | {"amount": 45000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForProvisions | {"amount": 23000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForProvisions | {"amount": 13000000.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForProvisions | {"amount": 76000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForProvisions | {"amount": 24000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": -1000000.0} | 2023-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": -1000000.0} | 2024-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": -1000000.0} | 2022-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfAssociates | {"amount": -1000000.0} | 2019-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 140000000.0} | 2023-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 133000000.0} | 2024-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 155000000.0} | 2021-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 182000000.0} | 2022-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 144000000.0} | 2020-12-31 | esef |
| ifrs:AdministrativeExpense | {"amount": 157000000.0} | 2019-12-31 | esef |
| ifrs:AmountsRemovedFromEquityAndIncludedInCarryingAmountOfNonfinancialAssetLiabilityWhoseAcquisitionOrIncurrenceWasHedgedHighlyProbableForecastTransactionBeforeTax | {"amount": 13000000.0} | 2021-12-31 | esef |
| ifrs:AmountsRemovedFromEquityAndIncludedInCarryingAmountOfNonfinancialAssetLiabilityWhoseAcquisitionOrIncurrenceWasHedgedHighlyProbableForecastTransactionBeforeTax | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:AmountsRemovedFromEquityAndIncludedInCarryingAmountOfNonfinancialAssetLiabilityWhoseAcquisitionOrIncurrenceWasHedgedHighlyProbableForecastTransactionBeforeTax | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:AmountsRemovedFromEquityAndIncludedInCarryingAmountOfNonfinancialAssetLiabilityWhoseAcquisitionOrIncurrenceWasHedgedHighlyProbableForecastTransactionBeforeTax | {"amount": 0.0} | 2023-12-31 | esef |
| ifrs:AmountsRemovedFromEquityAndIncludedInCarryingAmountOfNonfinancialAssetLiabilityWhoseAcquisitionOrIncurrenceWasHedgedHighlyProbableForecastTransactionBeforeTax | {"amount": -6000000.0} | 2020-12-31 | esef |
| ifrs:AmountsRemovedFromEquityAndIncludedInCarryingAmountOfNonfinancialAssetLiabilityWhoseAcquisitionOrIncurrenceWasHedgedHighlyProbableForecastTransactionBeforeTax | {"amount": -14000000.0} | 2019-12-31 | esef |
| ifrs:Assets | {"amount": 1377000000.0} | 2024-12-31 | esef |
| ifrs:Assets | {"amount": 1368000000.0} | 2023-12-31 | esef |
| ifrs:Assets | {"amount": 1756000000.0} | 2022-12-31 | esef |
| ifrs:Assets | {"amount": 2095000000.0} | 2021-12-31 | esef |
| ifrs:Assets | {"amount": 2204000000.0} | 2020-12-31 | esef |
| ifrs:Assets | {"amount": 2294000000.0} | 2019-12-31 | esef |
| ifrs:BasicAndDilutedEarningsLossPerShare | {"amount": 3.66} | 2020-12-31 | esef |
| ifrs:BasicAndDilutedEarningsLossPerShare | {"amount": -0.32} | 2019-12-31 | esef |
| ifrs:BasicAndDilutedEarningsLossPerShare | {"amount": -0.11} | 2021-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": -1.41} | 2022-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": -0.11} | 2021-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": -0.66} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": -0.59} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -0.33} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -0.59} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -1.19} | 2022-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -0.63} | 2020-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -0.11} | 2021-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": -0.53} | 2019-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.33} | 2023-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.01} | 2024-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": -0.22} | 2022-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": 4.28} | 2020-12-31 | esef |
| ifrs:BasicEarningsLossPerShareFromDiscontinuedOperations | {"amount": 0.21} | 2019-12-31 | esef |
| ifrs:CancellationOfTreasuryShares | {"amount": 0.0} | 2022-12-31 | esef |
| ifrs:CancellationOfTreasuryShares | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 68000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 77000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 138000000.0} | 2022-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 398000000.0} | 2021-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 585000000.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 107000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 68000000.0} | 2024-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 77000000.0} | 2023-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 138000000.0} | 2022-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 398000000.0} | 2021-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 585000000.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 99000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition | {"amount": 136000000.0} | 2018-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": -4000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 2000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": -5000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 915000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 16000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -10000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 22000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -77000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -67000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -249000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -131000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": -11000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": -20000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": -4000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations | {"amount": 0.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -16000000.0} | 2023-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -29000000.0} | 2024-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -76000000.0} | 2022-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -2000000.0} | 2021-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": 892000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -28000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations | {"amount": -5000000.0} | 2023-12-31 | esef |