Components of Special Charges (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Special Charges [Line Items]
Severance and benefits	$ 38			$ 52	$ 14
Impairment of assets held for disposal	32			33
Integration-related costs	17		45	51	115
Losses on sale of assets and other special (gains) losses, net	16			19	(3)
Special charges	169		52	221	144
Venezuela local currency loss		21		21
Income tax benefit				(1)
Total operating and nonoperating special charges, net of income taxes	169		52	241	144
Permanently grounded Embraer ERJ 135 aircraft
Special Charges [Line Items]
Costs associated with aircraft	66			66
Temporarily grounded Boeing 787 aircraft
Special Charges [Line Items]
Costs associated with aircraft			$ 7		$ 18