OPERATING SEGMENT INFORMATION (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Operating segment information is as follows (in millions):

	Three Months Ended March 31, 2016
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items(b)			Consolidated
Operating revenues
Passenger
Mainline	$	927		$	—	$	—		$	—		$	927		$	—		$	927
Regional	—			206		—			—			206			—			206
Total passenger revenues	927			206		—			—			1,133			—			1,133
CPA revenues	—			—		103			(103		)	—			—			—
Freight and mail	23			1		—			—			24			—			24
Other - net	172			17		1			—			190			—			190
Total operating revenues	1,122			224		104			(103		)	1,347			—			1,347
Operating expenses
Operating expenses, excluding fuel	701			186		105			(102		)	890			—			890
Economic fuel	144			25		—			—			169			(2		)	167
Total operating expenses	845			211		105			(102		)	1,059			(2		)	1,057
Nonoperating income (expense)
Interest income	6			—		—			—			6			—			6
Interest expense	(12		)	—		(1		)	—			(13		)	—			(13		)
Other	7			—		—			2			9			—			9
	1			—		(1		)	2			2			—			2
Income (loss) before income tax	$	278		$	13	$	(2	)	$	1		$	290		$	2		$	292

	Three Months Ended March 31, 2015
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items(b)		Consolidated
Operating revenues
Passenger
Mainline	$	901		$	—	$	—		$	—		$	901		$	—	$	901
Regional	—			186		—			—			186			—		186
Total passenger revenues	901			186		—			—			1,087			—		1,087
CPA revenues	—			—		99			(99		)	—			—		—
Freight and mail	22			1		—			—			23			—		23
Other - net	142			16		1			—			159			—		159
Total operating revenues	1,065			203		100			(99		)	1,269			—		1,269
Operating expenses
Operating expenses, excluding fuel	639			164		91			(98		)	796			—		796
Economic fuel	203			32		—			—			235			—		235
Total operating expenses	842			196		91			(98		)	1,031			—		1,031
Nonoperating income (expense)
Interest income	5			—		—			—			5			—		5
Interest expense	(7		)	—		(4		)	—			(11		)	—		(11		)
Other	7			—		1			—			8			—		8
	5			—		(3		)	—			2			—		2
Income (loss) before income tax	$	228		$	7	$	6		$	(1	)	$	240		$	—	$	240

^(a)  The adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and does not include certain income and charges.

^(b)  Includes mark-to-market fuel-hedge accounting charges.

Total assets were as follows (in millions):

	March 31, 2016			December 31, 2015
Alaska(a)	$	8,630		$	8,127
Horizon	717			717
Parent company	4,929			4,734
Elimination of inter-company accounts	(7,447		)	(7,048		)
Consolidated	$	6,829		$	6,530

^(a)  There are no assets associated with capacity purchase flying at Alaska.