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Trade and other current receivables - Summary of Impairment Provision for Trade and Other Receivables (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Trade and other current receivables [abstract]    
Provision for impairment of trade and other receivables at beginning of period € 278 € 286
Charge to income statement 34 27
Reduction/releases (82) (44)
Reclassifications (3) 4
Currency translations (5) 5
Provision for impairment of trade and other receivables at end of period € 222 € 278