Financial Derivative Instruments and Risk Management (Tables)

12 Months Ended

Dec. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Effect of Fuel and Interest Rate Derivative Instruments Reflected in Aircraft Fuel and Rent Expense

The following table summarizes the effect of interest rate derivative instruments reflected in rent expense within the Company’s consolidated statements of operations (in millions):

	Year Ended December 31,
	2023		2022		2021
Derivatives designated as cash flow hedges
Amortization of cash flow hedges, net of tax	$	(1)	$	(1)	$	(1)

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)

The following table presents the net of tax impact of the overall effectiveness of derivative instruments designated as cash flow hedging instruments within the Company’s consolidated statements of comprehensive income (loss) (in millions):

	Year Ended December 31,
	2023		2022		2021
Derivatives designated as cash flow hedges
Amortization of cash flow hedges, net of tax	$	1	$	1	$	1
Interest rate derivative contract gains (losses), net of tax	(2)		3		—
Total	$	(1)	$	4	$	1