Changes in Each Component of Accumulated Other Comprehensive Income (Loss) of Parent (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (727)
Other comprehensive income (loss):
Other comprehensive income (loss) attributable to the parent company	(270)		69		(143)
Ending Balance	(997)		(727)
Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(727)		(793)		(650)
Other comprehensive income (loss):
Currency translation adjustments	(185)		(40)		(6)
Holding gains (losses)	(9)		3		10
Reclassification of amount to net income	1	[1]	(16)	[1]	7	[1]
Plan amendments					(6)
Venezuelan bolivar devaluation	4		2
Net actuarial gains (losses)	(156)		101		(174)
Reclassification adjustment for net actuarial losses included in net periodic benefit cost	60	[2]	24	[2]	14	[2]
Other	3
Tax (expense) benefit	12		(5)		12
Other comprehensive income (loss) attributable to the parent company	(270)		69		(143)
Adjustments to accumulated other comprehensive income			(3)
Ending Balance	(997)		(727)		(793)
Parent [Member] | Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(242)		(198)		(192)
Other comprehensive income (loss):
Currency translation adjustments	(185)		(40)		(6)
Tax (expense) benefit
Other comprehensive income (loss) attributable to the parent company	(185)		(40)		(6)
Adjustments to accumulated other comprehensive income			(4)
Ending Balance	(427)		(242)		(198)
Parent [Member] | Hedging [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	0		3		(10)
Other comprehensive income (loss):
Holding gains (losses)	(12)		4		9
Reclassification of amount to net income	2	[1]	(8)	[1]	7	[1]
Tax (expense) benefit	1				(3)
Other comprehensive income (loss) attributable to the parent company	(9)		(4)		13
Adjustments to accumulated other comprehensive income			1
Ending Balance	(9)		0		3
Parent [Member] | Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	3		12		10
Other comprehensive income (loss):
Holding gains (losses)	3		(1)		1
Reclassification of amount to net income	(1)	[1]	(8)	[1]
Tax (expense) benefit					1
Other comprehensive income (loss) attributable to the parent company	2		(9)		2
Ending Balance	5		3		12
Parent [Member] | Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(488)		(610)		(458)
Other comprehensive income (loss):
Plan amendments					(6)
Venezuelan bolivar devaluation	4		2
Net actuarial gains (losses)	(156)		101		(174)
Reclassification adjustment for net actuarial losses included in net periodic benefit cost	60	[2]	24	[2]	14	[2]
Other	3
Tax (expense) benefit	11		(5)		14
Other comprehensive income (loss) attributable to the parent company	(78)		122		(152)
Ending Balance	$ (566)		$ (488)		$ (610)

[1] Foreign currency contract and investment reclassifications are included in other income, net.

[2] See Note 11 for additional details.