Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Deferred Revenue Arrangement [Line Items]
Residual Travel Funds	27.00%		27.00%		1.00%
Operating Revenue	$ 1,793	$ 5,639	$ 7,035	$ 16,698
Chase And Other Partner Agreements
Deferred Revenue Arrangement [Line Items]
Operating Revenue	$ 282	$ 329	$ 859	$ 984

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