XML 76 R59.htm IDEA: XBRL DOCUMENT v3.20.2
Stock Options Outstanding (Detail)
3 Months Ended
Jun. 30, 2020
$ / shares
shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Options Outstanding, Number of Shares Outstanding | shares 1,326,943
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) 6 years 1 month 28 days
Options Outstanding, Weighted-Average Exercise Price $ 77.54
Options Exercisable , Number of Shares Outstanding | shares 914,683
Options Exercisable, Weighted-Average Exercise Price $ 76.39
$23.17 - $29.84 [Member]  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Range 23.17
Range of Exercise Prices, Upper Range $ 29.84
Options Outstanding, Number of Shares Outstanding | shares 65,912
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) 1 year 1 month 6 days
Options Outstanding, Weighted-Average Exercise Price $ 23.27
Options Exercisable , Number of Shares Outstanding | shares 65,912
Options Exercisable, Weighted-Average Exercise Price $ 23.27
$33.43 - $ 37.34 [Member]  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Range 33.43
Range of Exercise Prices, Upper Range $ 37.34
Options Outstanding, Number of Shares Outstanding | shares 57,728
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) 1 year 11 months 15 days
Options Outstanding, Weighted-Average Exercise Price $ 34.03
Options Exercisable , Number of Shares Outstanding | shares 57,728
Options Exercisable, Weighted-Average Exercise Price $ 34.03
$53.22 - $ 77.67 [Member]  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Range 53.22
Range of Exercise Prices, Upper Range $ 77.67
Options Outstanding, Number of Shares Outstanding | shares 446,709
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) 6 years 11 months 23 days
Options Outstanding, Weighted-Average Exercise Price $ 67.55
Options Exercisable , Number of Shares Outstanding | shares 255,357
Options Exercisable, Weighted-Average Exercise Price $ 72.53
$79.73 - $ 106.24 [Member]  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Range 79.73
Range of Exercise Prices, Upper Range $ 106.24
Options Outstanding, Number of Shares Outstanding | shares 756,594
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) 6 years 5 months 8 days
Options Outstanding, Weighted-Average Exercise Price $ 91.49
Options Exercisable , Number of Shares Outstanding | shares 535,686
Options Exercisable, Weighted-Average Exercise Price $ 89.34