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Provisions - Contingent consideration provisions (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Provisions [Line Items]    
Provisions, at the start of the period € 2,313  
Acquisitions 150 € 123
Change in Fair value on contingent consideration (86) (78)
Provisions, at the end of the period 2,115 2,313
Provisions for contingent considerations [Member]    
Provisions [Line Items]    
Provisions, at the start of the period 208 318
Acquisitions 96 16
Provision used, other provisions 105 48
Provisions, at the end of the period € 113 € 208