Income Taxes - Schedule of Provision for Income Taxes on Income from Continuing Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ (3)	$ 14	$ 85
Foreign	357	235	167
State and local	1	1	9
Current provision for income taxes, total	355	250	261
Deferred:
Federal	7	84	129
Foreign	(41)	95	(227)
State and local	(1)	(1)	(1)
Deferred provision for income taxes, total	(35)	178	(99)
Provision for income taxes (T)	$ 320	$ 428	$ 162