Investments - Narrative (Details) - USD ($)	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]
Equity method investments	$ 37,000,000		$ 38,000,000
Gain (loss) from equity method investments	0	$ 3,000,000
Debt securities, unrealized gain (loss)	3,000,000	$ (2,000,000)
Cost method investments - jetblue tech ventures	$ 87,000,000		83,000,000
Measurement alternative, ownership percentage	10.00%
Cost method investments - TWA flight center hotel	$ 14,000,000		14,000,000
Fair Value, Recurring
Debt and Equity Securities, FV-NI [Line Items]
Equity investment securities	11,000,000		8,000,000
Level 1 \| Fair Value, Recurring
Debt and Equity Securities, FV-NI [Line Items]
Equity investment securities	$ 11,000,000		$ 8,000,000

Cost Method Investments - JetBlue Tech Ventures

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Cost Method Investments - TWA Flight Center Hotel

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