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Operations Classified as Held for Sale - Balance Sheet Breakdown Of Asset Held For Sale And Liabilities Assumed (Details) - EUR (€)
€ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of subsidiaries [line items]      
Non-current assets € 83,568 € 87,053  
Goodwill 18,708 18,471  
Property, plant and equipment 22,944 23,714 € 22,725
Disposal groups classified as held for sale      
Disclosure of subsidiaries [line items]      
Non-current assets 273 7  
Other assets 0 7  
Liabilities 37 0  
Disposal groups classified as held for sale | Peru      
Disclosure of subsidiaries [line items]      
Non-current assets 273 0  
Goodwill 34 0  
Property, plant and equipment 198 0  
Other assets 41 0  
Liabilities € 37 € 0