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Provisions - Provisions for Tax Proceedings (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of other provisions [line items]    
Other provisions at beginning of period € 2,128  
Other provisions at end of period 2,630 € 2,128
Brazil    
Disclosure of other provisions [line items]    
Other provisions at beginning of period 879  
Other provisions at end of period 1,300 879
Brazil | Tax proceedings    
Disclosure of other provisions [line items]    
Other provisions at beginning of period 340 282
Movements with a counterparty in the income statement 31 44
Write-offs due to payment (6) (19)
Monetary updating 37 29
Translation differences 44 4
Other provisions at end of period € 446 € 340