Investments - Narrative (Details) - USD ($) shares in Millions, $ in Millions	1 Months Ended
	Apr. 30, 2022	Dec. 31, 2022
JetSMART
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Ownership Interest		35.40%
JetSMART | American Airlines, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Ownership Interest		35.40%
GOL Linhas Aéreas Inteligentes S.A.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indefinite lived intangible assets acquired	$ 119
GOL Linhas Aéreas Inteligentes S.A. | American Airlines, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment owned, at fair value	200
Indefinite lived intangible assets acquired	$ 119
GOL Linhas Aéreas Inteligentes S.A. | Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investment, number of shares acquired from investee (in shares)	22.2
Equity securities, fair value	$ 81
GOL Linhas Aéreas Inteligentes S.A. | Preferred Stock | American Airlines, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investment, number of shares acquired from investee (in shares)	22.2
Equity securities, fair value	$ 81