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Accounts receivable - Summary of Accounts Receivable (Details) - EUR (€)
€ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of accounts receivable [line items]      
Accounts receivable € 7,677 € 8,433 € 8,424
Gross value      
Disclosure of accounts receivable [line items]      
Accounts receivable 7,777 8,528 8,537
Allowances      
Disclosure of accounts receivable [line items]      
Accounts receivable € 100 € 95 € 113