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Provisions - Summary of Provisions (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of other provisions [abstract]    
Beginning balance € 309 € 214
Additional provisions 91 180
Disposals (6) (38)
Unused amounts reversed through the income statement 0 (1)
Used during the year (209) (32)
Net exchange differences 9 (15)
Ending balance 193 309
Current 139 253
Non-current € 54 € 56