XML 55 R40.htm IDEA: XBRL DOCUMENT

Revenue - Air Traffic Liability - Loyalty Program Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Change in Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 5,079	$ 4,885	$ 5,189	$ 4,789
Amounts deferred associated with points awarded	859	815	2,609	2,395
Ending balance	4,996	4,885	4,996	4,885
Passenger Customer
Change in Contract With Customer, Liability [Roll Forward]
Revenue recognized from points redeemed	(916)	(791)	(2,730)	(2,236)
Other
Change in Contract With Customer, Liability [Roll Forward]
Revenue recognized from points redeemed	$ (26)	$ (24)	$ (72)	$ (63)