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Special Charges - Additional Information (Detail)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2016 Contract	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Contract	Jun. 30, 2015 USD ($)	Dec. 31, 2014 Attendant	Dec. 31, 2015 USD ($)
Special Charges [Line Items]
Labor agreement costs		$ 10,000,000		$ 110,000,000
Severance and benefits costs		6,000,000	$ 25,000,000	14,000,000	$ 75,000,000
Severance and benefits costs net of tax		4,000,000		9,000,000
Charge related to the amended lease				$ 74,000,000
Lease maturity year				2029
(Gains) losses on sale of assets and other special charges		6,000,000	30,000,000	$ 14,000,000	44,000,000
(Gains) losses on sale of assets and other special charges net of tax		4,000,000		9,000,000
Venezuela local currency loss				8,000,000
Venezuela local currency loss net of tax				5,000,000
Sale of an affiliate				9,000,000
Sale of an affiliate net of tax				6,000,000
Loss on extinguishment of debt and other, net		(9,000,000)	128,000,000	(1,000,000)	134,000,000
Accrual severance and benefit		30,000,000	$ 104,000,000	$ 30,000,000	$ 104,000,000
Severance-related accrual expected payment date				2016
Newark Liberty International Airport
Special Charges [Line Items]
Impairment of indefinite-lived intangible assets		412,000,000		$ 412,000,000
Impairment of indefinite-lived intangible assets, net of tax benefits		264,000,000
Voluntary early out program
Special Charges [Line Items]
Number of positions eliminated | Attendant						2,500
Voluntary early out program | Maximum
Special Charges [Line Items]
Severance payment per participant							$ 100,000
Lease Amendment Charges
Special Charges [Line Items]
Charge related to the amended lease				74,000,000
Charge related to the amended lease net of tax				47,000,000
Int'1 Association of Machinists
Special Charges [Line Items]
Labor agreement costs		10,000,000		110,000,000
Labor agreement costs net of tax		$ 6,000,000		$ 70,000,000
Number of new contracts extended | Contract	7			7
Service contract extended year	2021			2021

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