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Goodwill and other intangible assets - Schedule of Movements in Goodwill (Details) - Goodwill - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of reconciliation of changes in goodwill [line items]      
Beginning balance € 48,056 € 44,364 € 44,519
Acquisitions during the period 609 2,179 1,843
Other movements during the period (258) (89) (75)
Currency translation differences 1,485 1,602 (1,923)
Ending balance € 49,892 € 48,056 € 44,364