Stockholders' Equity (Accumulated Other Comprehensive Income) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Currency Translation Adjustments, Balance			$ 166	$ 193
Net Unrealized Gains (Losses) on Cash Flow Hedges, Balance	2	1	2	1
Net Unrealized Gains on Available- For-Sale Securities, Balance			2	2
Currency Translation Adjustments, Balance			(52)	(85)
Accumulated Other Comprehensive Income, Balance			117	110
Currency Translation Adjustments, Current period change	(79)	39	(71)	(21)
Net unrealized gain (loss) on cash flow hedges (net of tax of $(2), $0, $(1), $(1), respectively)	3	0	1	1
Net unrealized gains on available-for-sale securities, net of tax	0	2	1	1
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0	(19)	(1)	(19)
Accumulated Other Comprehensive Income, Current period change	(76)	60	(68)	0
Currency Translation Adjustments, Balance	95	172	95	172
Net Unrealized Gains (Losses) on Cash Flow Hedges, Balance			1	0
Net Unrealized Gains on Available- For-Sale Securities, Balance	3	3	3	3
Currency Translation Adjustments, Balance	(51)	(66)	(51)	(66)
Accumulated Other Comprehensive Income, Balance	49	110	49	110
Derivatives used in Net Investment Hedge, Net of Tax	20		20
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent			(71)	(21)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax				10
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax			1	6
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(73)	(6)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			5	6
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax			0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax			0	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax			(3)	1
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	2		6
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	1		4	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax			1	1
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax			$ 0	$ 13