Financial Instruments - Gross Gains and Gross Losses Realized on Sales of Available-For-Sale Marketable Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Investments, Debt and Equity Securities [Abstract] | |||
| Realized gains | $ 18 | $ 3 | $ 2 |
| Realized losses | $ 7 | $ 10 | $ 67 |