v3.25.4
Debt - Text Details (Detail)
€ in Millions, $ in Billions
12 Months Ended
Dec. 31, 2025
EUR (€)
Tranche
Dec. 31, 2025
USD ($)
Tranche
Dec. 31, 2024
EUR (€)
Disclosure of detailed information about borrowings [line items]      
Euro Medium-Term Note program € 10,000    
Change of control triggering event 101.00% 101.00%  
Weighted average      
Disclosure of detailed information about borrowings [line items]      
Average rate of interest 3.20% 3.20% 3.20%
Commercial Paper Programme      
Disclosure of detailed information about borrowings [line items]      
Notional amount | $   $ 2.5  
Committed revolving credit facility      
Disclosure of detailed information about borrowings [line items]      
Undrawn borrowing facilities € 1,000    
Euro Medium-Term Note (EMTN)      
Disclosure of detailed information about borrowings [line items]      
Number of new tranches issued | Tranche 2 2  
Proceeds from issue of bonds, notes and debentures € 1,000    
Notes and debentures issued 4,600   € 3,700
Purchase forward contracts      
Disclosure of detailed information about borrowings [line items]      
Notional amount 260    
Purchase forward contracts | Within 1 year      
Disclosure of detailed information about borrowings [line items]      
Notional amount 141    
Purchase forward contracts | 1 to 2 years      
Disclosure of detailed information about borrowings [line items]      
Notional amount € 119    
Long-term incentive and employee stock purchases plans      
Disclosure of detailed information about borrowings [line items]      
Notional amount     € 142
Bank borrowings | Weighted average      
Disclosure of detailed information about borrowings [line items]      
Average rate of interest 6.30% 6.30% 9.30%