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Finance income (expense) (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Finance income (expense)      
Finance income € 3,723 € 3,531 € 3,087
Finance expense (4,216) (4,958) (4,079)
Net finance income (expense) from financial assets held for trading 11 31 127
Income (expense) from derivative financial instruments (306) 351 (14)
Finance income (expense) € (788) € (1,045) € (879)