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Share-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. 03, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Options outstanding, beginning of period 9,956
Granted 781
Canceled (196)
Exercised (1,252)
Options outstanding, end of period 9,289
Options exercisable, end of period 5,524
Options available for grant, end of period 5,188
Average Exercise Price  
Options outstanding, beginning of period | $ / shares $ 23.59
Granted | $ / shares 35.28
Canceled | $ / shares 24.51
Exercised | $ / shares 19.92
Options outstanding, end of period | $ / shares 25.04
Options exercisable, end of period | $ / shares $ 24.62