XML 77 R65.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock-Based Compensation - Number and Weighted Average Exercise Price of Options Issued and Outstanding under all Stock Option Plans (Detail)
shares in Thousands
 6 Months Ended
Jun. 30, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Options outstanding, beginning of period 6,953
Granted 356
Canceled (132)
Exercised (693)
Options outstanding, end of period 6,484
Options exercisable, end of period 3,896
Options available for grant, end of period 3,300
Average Exercise Price  
Options outstanding, beginning of period | $ / shares $ 36.26
Granted | $ / shares 88.62
Canceled | $ / shares 49.66
Exercised | $ / shares 28.54
Options outstanding, end of period | $ / shares 39.68
Options exercisable, end of period | $ / shares $ 27.34