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Quarterly Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								6 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 626	$ 552	$ 599	$ 545	$ 719	$ 606	$ 623	$ 582		$ 2,322	$ 2,530	$ 2,732
Gross margin	315	294	310	269	365	307	327	277		1,188	1,276	1,479
Operating (loss) income	98	89	87	(42)	(40)	77	(262)	30		232	(195)	503
Net income (loss)	$ 58	$ 49	$ 64	$ (46)	$ (49)	$ 78	$ (265)	$ 22		$ 125	$ (214)	$ 367
Net (loss) income per share:
Basic (in usd per share)	$ 0.45	$ 0.38	$ 0.49	$ (0.36)	$ (0.37)	$ 0.56	$ (1.87)	$ 0.15		$ 0.96	$ (1.53)	$ 2.36
Diluted (in usd per share)	$ 0.44	$ 0.37	$ 0.49	$ (0.36)	$ (0.37)	$ 0.55	$ (1.87)	$ 0.15		$ 0.95	$ (1.53)	$ 2.33
Business Combination Segment Allocation [Line Items]
Impairment of goodwill, acquired intangibles and other assets				$ 76					$ 76	$ 80	$ 478	$ 0
Impairment of goodwill				$ 57							437
Marketing Applications
Quarterly Financial Information Disclosure [Abstract]
Total revenues										69	153	164
Gross margin										33	63	$ 76
Business Combination Segment Allocation [Line Items]
Impairment of goodwill, acquired intangibles and other assets					$ 138
Impairment of goodwill							$ 340			$ 80	$ 140

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