v3.26.1
Debt (Interest Expense) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Interest Expense    
Amortization $ 10 $ 13
(Gain) loss on adjustment to bifurcated compound exchange feature 153 (36)
Total 276 116
Convertible debt instruments    
Interest Expense    
Contractual interest 3 5
Amortization 5 6
(Gain) loss on adjustment to bifurcated compound exchange feature 153 (36)
Total $ 161 $ (25)