OPERATING SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Operating segment information is as follows (in millions):

	Three Months Ended September 30, 2020
	Mainline		Regional		Horizon		Consolidating & Other(a)		Air Group Adjusted(b)		Special Items(c)		Consolidated
Operating Revenues
Passenger revenues	$	401	$	171	$	—	$	—	$	572	$	—	$	572
CPA revenues	—		—		95		(95)		—		—		—
Mileage Plan other revenue	65		19		—		—		84		—		84
Cargo and other	45		—		—		—		45		—		45
Total Operating Revenues	511		190		95		(95)		701		—		701
Operating Expenses
Operating expenses, excluding fuel	872		248		78		(97)		1,101		46		1,147
Economic fuel	90		38		—		—		128		(3)		125
Total Operating Expenses	962		286		78		(97)		1,229		43		1,272
Nonoperating Income (Expense)
Interest income	8		—		—		(1)		7		—		7
Interest expense	(28)		—		(6)		—		(34)		—		(34)
Interest capitalized	4		—		—		—		4		—		4
Other - net	4		—		—		1		5		—		5
Total Nonoperating Income (Expense)	(12)		—		(6)		—		(18)		—		(18)
Income (Loss) Before Income Tax	$	(463)	$	(96)	$	11	$	2	$	(546)	$	(43)	$	(589)
	Three Months Ended September 30, 2019
	Mainline		Regional		Horizon		Consolidating & Other(a)		Air Group Adjusted(b)		Special Items(c)		Consolidated
Operating Revenues
Passenger revenues	$	1,850	$	361	$	—	$	—	$	2,211	$	—	$	2,211
CPA revenues	—		—		112		(112)		—		—		—
Mileage Plan other revenue	107		11		—		—		118		—		118
Cargo and other	58		1		—		1		60		—		60
Total Operating Revenues	2,015		373		112		(111)		2,389		—		2,389
Operating Expenses
Operating expenses, excluding fuel	1,226		275		94		(119)		1,476		5		1,481
Economic fuel	411		75		—		—		486		—		486
Total Operating Expenses	1,637		350		94		(119)		1,962		5		1,967
Nonoperating Income (Expense)
Interest income	17		—		—		(6)		11		—		11
Interest expense	(18)		—		(7)		7		(18)		—		(18)
Interest capitalized	4		—		—		—		4		—		4
Other - net	(3)		—		—		—		(3)		—		(3)
Total Nonoperating Income (Expense)	—		—		(7)		1		(6)		—		(6)
Income (Loss) Before Income Tax	$	378	$	23	$	11	$	9	$	421	$	(5)	$	416

	Nine Months Ended September 30, 2020
	Mainline		Regional		Horizon		Consolidating & Other(a)		Air Group Adjusted(b)		Special Items(c)		Consolidated
Operating Revenues
Passenger revenues	$	1,860	$	502	$	—	$	—	$	2,362	$	—	$	2,362
CPA revenues	—		—		281		(281)		—		—		—
Mileage Plan other revenue	219		47		—		—		266		—		266
Cargo and other	128		—		—		2		130		—		130
Total Operating Revenues	2,207		549		281		(279)		2,758		—		2,758
Operating Expenses
Operating expenses, excluding fuel	2,777		727		238		(289)		3,453		(83)		3,370
Economic fuel	448		120		—		—		568		—		568
Total Operating Expenses	3,225		847		238		(289)		4,021		(83)		3,938
Nonoperating Income (Expense)
Interest income	33		—		—		(10)		23		—		23
Interest expense	(58)		—		(16)		10		(64)		—		(64)
Interest capitalized	8		—		—		—		8		—		8
Other - net	16		—		—		—		16		—		16
Total Nonoperating Income (Expense)	(1)		—		(16)		—		(17)		—		(17)
Income (Loss) Before Income Tax	$	(1,019)	$	(298)	$	27	$	10	$	(1,280)	$	83	$	(1,197)
	Nine Months Ended September 30, 2019
	Mainline		Regional		Horizon		Consolidating & Other(a)		Air Group Adjusted(b)		Special Items(c)		Consolidated
Operating Revenues
Passenger revenues	$	5,039	$	999	$	—	$	—	$	6,038	$	—	$	6,038
CPA revenues	—		—		340		(340)		—		—		—
Mileage Plan other revenue	312		34		—		—		346		—		346
Cargo and other	163		2		1		3		169		—		169
Total Operating Revenues	5,514		1035		341		(337)		6,553		—		6,553
Operating Expenses
Operating expenses, excluding fuel	3,545		817		286		(353)		4,295		39		4,334
Economic fuel	1,191		218		—		—		1,409		(1)		1,408
Total Operating Expenses	4,736		1,035		286		(353)		5,704		38		5,742
Nonoperating Income (Expense)
Interest income	50		—		—		(19)		31		—		31
Interest expense	(58)		—		(22)		20		(60)		—		(60)
Interest capitalized	11		—		—		—		11		—		11
Other - net	(20)		—		—		—		(20)		—		(20)
Total Nonoperating Income (Expense)	(17)		—		(22)		1		(38)		—		(38)
Income (Loss) Before Income Tax	$	761	$	—	$	33	$	17	$	811	$	(38)	$	773

(a)Includes consolidating entries, Air Group parent company, McGee Air Services, and other immaterial business units.

(b)The Air Group Adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and excludes certain income and charges.

(c)Includes payroll support program grant wage offsets, special items and mark-to-market fuel hedge accounting adjustments.

Total assets were as follows (in millions):

	September 30, 2020		December 31, 2019
Mainline	$	20,586	$	19,207
Horizon	1,231		1,266
Consolidating & Other	(7,068)		(7,480)
Consolidated	$	14,749	$	12,993