v3.26.1
Financial Instruments (Available-For-Sale Debt Securities) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities $ 209 $ 204
Debt Securities, Available-for-Sale [Line Items]    
Cost 210 203
Within one year 66 63
One to five years 133 128
Six to ten years 2 2
After ten years 9 10
Available-for-sale securities 209 204
Within one year 66 63
One to five years 132 129
Six to ten years 2 2
After ten years 9 10
Corporate bonds    
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities 115 109
Debt Securities, Available-for-Sale [Line Items]    
Cost 115 108
Available-for-sale securities 115 109
U.S. government treasury securities    
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities 39 37
Debt Securities, Available-for-Sale [Line Items]    
Cost 40 37
Available-for-sale securities 39 37
U.S. federal agency securities    
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities 11 13
Debt Securities, Available-for-Sale [Line Items]    
Cost 11 13
Available-for-sale securities 11 13
Asset-backed securities    
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities 39 37
Debt Securities, Available-for-Sale [Line Items]    
Cost 39 37
Available-for-sale securities 39 37
Supranational securities    
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities 5 8
Debt Securities, Available-for-Sale [Line Items]    
Cost 5 8
Available-for-sale securities $ 5 $ 8