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Quarterly Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Combination Segment Allocation [Line Items]                      
Impairment of goodwill and acquired intangibles     $ 478           $ 437    
Impairment of goodwill and acquired intangibles                 478 $ 0 $ 0
Total revenues $ 719 $ 606 623 $ 582 $ 761 $ 667 $ 676 $ 628 2,530 2,732 2,692
Gross margin 365 307 327 277 425 350 371 333 1,276 1,479 1,473
Operating income (loss) (40) 77 (262) 30 158 123 133 89 (195) 503 532
Net (loss) income $ (49) $ 78 $ (265) $ 22 $ 118 $ 94 $ 96 $ 59 $ (214) $ 367 $ 377
Net income (loss) per share:                      
Basic (in usd per share) $ (0.37) $ 0.56 $ (1.87) $ 0.15 $ 0.78 $ 0.61 $ 0.61 $ 0.37 $ (1.53) $ 2.36 $ 2.31
Diluted (in usd per share) $ (0.37) $ 0.55 $ (1.87) $ 0.15 $ 0.77 $ 0.60 $ 0.60 $ 0.37 $ (1.53) $ 2.33 $ 2.27
Marketing Applications                      
Business Combination Segment Allocation [Line Items]                      
Impairment of goodwill and acquired intangibles $ 140   $ 340           $ 437    
Impairment of goodwill and acquired intangibles $ 138