v3.25.4
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
Effect of derivative instruments involved in fair value hedging on the consolidated financial statements      
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) on Derivatives $ 216 $ (120) $ 3
Interest rate swaps      
Effect of derivative instruments involved in fair value hedging on the consolidated financial statements      
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) on Derivatives (6) 28 11
Foreign currency forward contracts      
Effect of derivative instruments involved in fair value hedging on the consolidated financial statements      
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) on Derivatives 325 (175) 24
Fuel swaps      
Effect of derivative instruments involved in fair value hedging on the consolidated financial statements      
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) on Derivatives $ (103) $ 27 $ (32)