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Components of Special Charges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Operating:
Labor agreement costs	$ 10		$ 110
Severance and benefit costs	6	$ 25	14	$ 75
Cleveland airport lease restructuring			74
(Gains) losses on sale of assets and other special charges	6	30	14	44
Special charges	434	55	624	119
Nonoperating and income taxes:
(Gain) loss on extinguishment of debt and other	(9)	128	(1)	134
Income tax benefit related to special charges	(153)		(225)
Total special charges, net of tax	272	$ 183	398	$ 253
Newark Liberty International Airport
Operating:
Impairment of intangible asset related to Newark Liberty International Airport ("Newark") slots	$ 412		$ 412

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Income Tax Expense (Benefit), Restructuring

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Amount of gain (loss) on sale or disposal of other assets.

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-Publisher FASB
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-SubTopic 10
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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Period expense related to postemployment benefits.

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