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Investments accounted for using the equity method - Summary of share of profits/loss of equity method investees (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments accounted for using equity method [abstract]      
Joint ventures € 118 € 547 € 286
Associates (137) (50) 13
Other (14) (6) (35)
Total Share of the profit/(loss) of equity method investees € (33) € 491 € 264