v3.24.1.u1
Fair Value Measurements and Derivative Instruments - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Derivative financial instruments    
Asset Derivatives    
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative financial instruments Derivative financial instruments
Liability Derivatives    
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative financial instruments Derivative financial instruments
Other assets    
Asset Derivatives    
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets, net of allowances of $43 at March 31, 2024 and December 31, 2023. Other assets, net of allowances of $43 at March 31, 2024 and December 31, 2023.
Other long-term liabilities    
Liability Derivatives    
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other long-term liabilities Other long-term liabilities
Designated as Hedging Instrument    
Asset Derivatives    
Asset Derivatives [1] $ 173 $ 144
Liability Derivatives    
Liability Derivatives [1] 58 66
Interest rate swaps | Designated as Hedging Instrument | Derivative financial instruments    
Asset Derivatives    
Asset Derivatives 0 1
Liability Derivatives    
Liability Derivatives 0 0
Interest rate swaps | Designated as Hedging Instrument | Other assets    
Asset Derivatives    
Asset Derivatives [1] 83 75
Interest rate swaps | Designated as Hedging Instrument | Other long-term liabilities    
Liability Derivatives    
Liability Derivatives [1] 0 0
Foreign currency forward contracts | Designated as Hedging Instrument | Derivative financial instruments    
Asset Derivatives    
Asset Derivatives [1] 10 20
Liability Derivatives    
Liability Derivatives [1] 44 9
Foreign currency forward contracts | Designated as Hedging Instrument | Other assets    
Asset Derivatives    
Asset Derivatives [1] 22 44
Foreign currency forward contracts | Designated as Hedging Instrument | Other long-term liabilities    
Liability Derivatives    
Liability Derivatives [1] 9 4
Fuel swaps | Designated as Hedging Instrument | Derivative financial instruments    
Asset Derivatives    
Asset Derivatives [1] 42 4
Liability Derivatives    
Liability Derivatives [1] 3 26
Fuel swaps | Designated as Hedging Instrument | Other assets    
Asset Derivatives    
Asset Derivatives [1] 16 0
Fuel swaps | Designated as Hedging Instrument | Other long-term liabilities    
Liability Derivatives    
Liability Derivatives [1] $ 2 $ 27
[1] Subtopic 815-20 “Hedging-General” under ASC 815.