v3.26.1
Fair value measurement - Narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Contingent consideration obligations $ 171 $ 161
Total carrying value of debt 57,304 54,604
Fixed-rate notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Aggregate fair value of long-term debt, including current portion 53,100 51,000
Total carrying value of debt $ 55,500 $ 52,800