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Accounting information and policies - Disclosure Of Detailed Information about Effects of Hyperinflationary Economies (Details)
€ in Millions
 12 Months Ended
Dec. 31, 2023
EUR (€)
Disclosure Of Summary Of Significant Accounting Policies [Line Items]  
Total assets increase/(reduction) € (197)
Turnover increase/(reduction) (428)
Operating profit increase/(reduction) (124)
Net monetary gain/(loss) (142)
Argentina  
Disclosure Of Summary Of Significant Accounting Policies [Line Items]  
Total assets increase/(reduction) (205)
Turnover increase/(reduction) (440)
Operating profit increase/(reduction) (112)
Net monetary gain/(loss) (203)
Turkey  
Disclosure Of Summary Of Significant Accounting Policies [Line Items]  
Total assets increase/(reduction) 8
Turnover increase/(reduction) 12
Operating profit increase/(reduction) (12)
Net monetary gain/(loss) € 61