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Assets held for sale or exchange and liabilities related to assets held for sale or exchange - Summary of Assets Held for Sale or Exchange, and Liabilities Related to Assets Held for Sale or Exchange (Details) - EUR (€)
€ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Subclassifications of assets, liabilities and equities [abstract]      
Assets held for sale or exchange € 15 € 85 € 89
Liabilities related to assets held for sale or exchange € 13 € 10 € 0