Intangible Assets, net (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

The following table summarizes the Company’s intangible assets, net (in millions):

		December 31,
		2023						2022
	Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Indefinite-lived:
Airport slots	Indefinite	$	20	$	—	$	20	$	20	$	—	$	20
Trademarks	Indefinite	6		—		6		6		—		6
		26		—		26		26		—		26
Finite-lived:
Affinity credit card program	16 years	16		(14)		2		16		(14)		2
Total intangible assets, net		$	42	$	(14)	$	28	$	42	$	(14)	$	28

Summary of Intangible Assets

The following table summarizes the Company’s intangible assets, net (in millions):

		December 31,
		2023						2022
	Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Indefinite-lived:
Airport slots	Indefinite	$	20	$	—	$	20	$	20	$	—	$	20
Trademarks	Indefinite	6		—		6		6		—		6
		26		—		26		26		—		26
Finite-lived:
Affinity credit card program	16 years	16		(14)		2		16		(14)		2
Total intangible assets, net		$	42	$	(14)	$	28	$	42	$	(14)	$	28