Stockholders' Equity (Components Of Other Comprehensive Income) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Equity [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	$ (24)	$ 0
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	2	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	0	0
Net income (loss)	(9)	4
Currency translation adjustments (net of tax of $(24) and $0, respectively)	(92)	3
Net unrealized gain (loss) on available-for-sale securities (net of tax of $0 and $0, respectively)	0	(1)
Net unrealized gain (loss) on cash flow hedges (net of tax of $2 and $0, respectively)	(3)	1
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	1	0
Other comprehensive income (loss)	(94)	3
Total comprehensive income (loss)	$ (103)	$ 7