Revenue - Operating Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Operating revenue	$ 7,566	$ 3,221
Domestic (U.S. and Canada)
Disaggregation of Revenue [Line Items]
Operating revenue	5,086	2,111
Atlantic
Disaggregation of Revenue [Line Items]
Operating revenue	1,089	410
Latin America
Disaggregation of Revenue [Line Items]
Operating revenue	909	392
Pacific
Disaggregation of Revenue [Line Items]
Operating revenue	$ 482	$ 308

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details