Revenue Recognition - Revenue Recognized By Revenue (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Passenger revenue
Passenger travel	$ 8,078	$ 5,304	$ 2,551
Loyalty revenue - air transportation	508	305	182
Other revenue
Loyalty revenue	391	306	168
Other revenue	181	122	56
Total revenue	$ 9,158	$ 6,037	$ 2,957

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details