RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Changes and Error Corrections [Abstract]

Schedule of New Accounting Pronouncements Impact

Consolidated balance sheet as of December 31, 2017 (in millions):

	December 31, 2017
	As Reported		Adjustments - Revenue Recognition			As Adjusted
Current Assets:
Prepaid expenses and other current assets	$	127	$	6		$	133
Current Liabilities:
Air traffic liability	937		(131		)	806
Deferred revenue	518		117			635
Other liabilities and credits:
Deferred income taxes	454		(84		)	370
Deferred revenue	699		391			1,090
Other liabilities	451		(26		)	425
Shareholders' Equity:
Retained earnings	4,454		(261		)	4,193

Condensed consolidated statement of operations for the three months ended March 31, 2017 (in millions):

	Three Months Ended March 31, 2017
	As Reported			Adjustments - Revenue Recognition			Adjustments - Retirement Benefits			As Adjusted
Operating Revenues
Passenger Revenue	$	1,484		$	118		$	—		$	1,602
Mileage plan other revenue	119			(19		)	—			100
Cargo and other revenue	146			(108		)	—			38
Total Operating Revenue	1,749			(9		)	—			1,740
Operating Expenses
Wages and benefits	448			—			2			450
Selling expenses	81			2			—			83
Special items—merger-related costs	40			(1		)	—			39
All other operating expenses	1,011			—			—			1,011
Total Operating Expenses	1,580			1			2			1,583
Operating Income	169			(10		)	(2		)	157
Nonoperating Income (Expense)
Other—net	(3		)	—			2			(1		)
All other nonoperating income (expense)	(14		)	—			—			(14		)
	(17		)	—			2			(15		)
Income (loss) before income tax	152			(10		)	—			142
Income tax expense (benefit)	53			(4		)	—			49
Net Income (Loss)	$	99		$	(6	)	$	—		$	93

Condensed consolidated statement of cash flows for the three months ended March 31, 2017 (in millions):

	Three Months Ended March 31, 2017
	As Reported			Adjustments - Revenue Recognition		As Adjusted
Cash flows from operating activities:
Net income	$	99		(6	)	$	93
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	90			—		90
Stock-based compensation and other	13			—		13
Changes in certain assets and liabilities:
Changes in deferred tax provision	48			(4	)	44
Increase in air traffic liability	369			(5	)	364
Increase in deferred revenue	1			30		31
Other—net	(150		)	(15	)	(165		)
Net cash provided by operating activities	470			—		470
Net cash used in investing activities	(488		)	—		(488		)
Net cash used in financing activities	(127		)	—		(127		)
Net increase (decrease) in cash and cash equivalents	(145		)	—		(145		)
Cash and cash equivalents at beginning of year	328			—		328
Cash and cash equivalents at end of the period	$	183		—		$	183