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Stock-Based Compensation - Number and Weighted Average Exercise Price of Options Issued and Outstanding under all Stock Option Plans (Detail)
shares in Thousands
 9 Months Ended
Oct. 01, 2016
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Options outstanding, beginning of period 9,202
Granted 1,257
Canceled (141)
Exercised (1,292)
Options outstanding, end of period 9,026
Options exercisable, end of period 5,222
Options available for grant, end of period 4,300
Average Exercise Price  
Options outstanding, beginning of period | $ / shares $ 25.46
Granted | $ / shares 39.34
Canceled | $ / shares 29.32
Exercised | $ / shares 20.43
Options outstanding, end of period | $ / shares 28.05
Options exercisable, end of period | $ / shares $ 26.01