REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

9 Months Ended

Sep. 30, 2018

Revenue Recognition [Abstract]

Disaggregation of Revenue

Cargo and other revenue included in the condensed consolidated statements of operations (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cargo revenue	$	36	$	32	$	96	$	88
Other revenue	19		15		50		45
Total Cargo and other revenue	$	55	$	47	$	146	$	133

Mileage Plan™ revenue included in the condensed consolidated statements of operations (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Passenger revenue	$	153	$	134	$	459	$	405
Mileage PlanTM other revenue	114		105		329		314
Total Mileage Plan™ revenue	$	267	$	239	$	788	$	719

Passenger revenue recognized in the condensed consolidated statements of operations (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Passenger ticket revenue, including ticket breakage and net of taxes and fees	$	1,744	$	1,683	$	4,865	$	4,709
Passenger ancillary revenue	146		141		401		391
Mileage PlanTM passenger revenue	153		134		459		405
Total passenger revenue	$	2,043	$	1,958	$	5,725	$	5,505

Contract with Customer Liabilities

The table below presents a roll forward of the total frequent flyer liability (in millions):

	Nine Months Ended September 30,
	2018			2017
Total Deferred Revenue balance at January 1	$	1,725		$	1,534
Travel miles and companion certificate redemption - Passenger revenue	(459		)	(405		)
Miles redeemed on partner airlines - Other revenue	(66		)	(54		)
Increase in liability for mileage credits issued	631			586
Total Deferred Revenue balance at September 30	$	1,831		$	1,661