Stockholders' Equity (Components Of Other Comprehensive Income) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	$ 7	$ (2)	$ (17)	$ (2)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	0	1	2	1
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(1)	(1)	(1)	(1)
Net income	143	26	134	30
Currency translation adjustments (net of tax of $(24) and $0, respectively)	8	5	(84)	8
Net unrealized gain (loss) on available-for-sale securities (net of tax of $0 and $0, respectively)	(1)	2	(1)	1
Net unrealized gain (loss) on cash flow hedges (net of tax of $2 and $0, respectively)	0	(3)	(3)	(2)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	1	1	2	1
Other comprehensive income (loss)	8	5	(86)	8
Total comprehensive income (loss)	$ 151	$ 31	$ 48	$ 38