Investments - Equity Investments Ownership Interest and Carrying Value (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Equity Investments
Equity investments	$ 1,712	$ 1,665
Wheels Up
Equity Investments
Ownership interest (percent)	21.00%	24.00%
Carrying value	$ 241	$ 210
Hanjin-KAL
Equity Investments
Ownership interest (percent)	13.00%	13.00%
Carrying value	$ 455	$ 512
Air France-KLM
Equity Investments
Ownership interest (percent)	6.00%	9.00%
Carrying value	$ 165	$ 235
China Eastern
Equity Investments
Ownership interest (percent)	2.00%	3.00%
Carrying value	$ 177	$ 201
CLEAR
Equity Investments
Ownership interest (percent)	6.00%	6.00%
Carrying value	$ 260	$ 120
Other Investments
Equity Investments
Carrying value	$ 255	$ 233
Unifi Aviation
Equity Investments
Ownership interest (percent)	49.00%	49.00%
Carrying value	$ 159	$ 154

Equity Securities And Equity Method Investments

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Equity Securities, FV-NI, Ownership Percentage

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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