Fair Value Measurements and Derivative Instruments - Schedule of Effect of Derivative Instruments Not Designated as Cash Flow Hedging Instruments (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Derivative instruments disclosure | |||
| Amount of Gain (Loss) Recognized in Income on Derivatives | $ 51 | $ (77) | $ 20 |
| Foreign currency forward contracts | Other income (expense) | |||
| Derivative instruments disclosure | |||
| Amount of Gain (Loss) Recognized in Income on Derivatives | 49 | (77) | 19 |
| Fuel swaps | Other income (expense) | |||
| Derivative instruments disclosure | |||
| Amount of Gain (Loss) Recognized in Income on Derivatives | $ 2 | $ 0 | $ 1 |