COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases and Unrecorded Unconditional Purchase Obligtaions [Table Text Block]

Future minimum payments for commitments as of December 31, 2017 (in millions):

	Aircraft Leases		Facility Leases		Aircraft Purchase Commitments		Capacity Purchase Agreements (a)		Aircraft Maintenance Deposits		Aircraft Maintenance and Parts Management
2018	$	354	$	77	$	955	$	129	$	61	$	98
2019	356		67		816		151		65		102
2020	330		61		377		159		68		105
2021	285		53		268		165		64		121
2022	262		34		193		173		52		76
Thereafter	1,021		142		145		1,079		39		80
Total	$	2,608	$	434	$	2,754	$	1,856	$	349	$	582