XML 129 R54.htm IDEA: XBRL DOCUMENT v3.20.2
Stock Compensation Plans (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Oct. 31, 2020
Oct. 31, 2020
Jan. 31, 2020
Unrecognized compensation cost      
Total unrecognized compensation cost $ 1,155,741 $ 1,155,741  
Additional disclosures      
Reversal of stock based compensation previously recognized $ 10,800    
Options      
Shares      
Outstanding at the beginning of the period (in shares)   823,541  
Options exercised (in shares)   (311,856)  
Options forfeited and expired (in shares)   (52,104)  
Outstanding at the end of the period (in shares) 459,581 459,581 823,541
Vested and expected to vest at the end of the period (in shares) 447,014 447,014  
Exercisable at the end of the period (in shares) 190,974 190,974  
Weighted-Average Exercise Price Per Share      
Balances at the beginning of the period (in dollars per share)   $ 10.79  
Options exercised (in dollars per share)   9.90  
Options forfeited and expired (in dollars per share)   12.94  
Balances at the end of the period (in dollars per share) $ 11.15 11.15 $ 10.79
Vested and expected to vest at the end of the period (in dollars per share) 11.14 11.14  
Exercisable at the end of the period (in dollars per share) $ 10.92 $ 10.92  
Weighted-Average Remaining Contractual Term      
Weighted- Average Remaining Contractual Term   6 years 25 days 6 years 7 months 9 days
Vested and expected to vest at the end of the period   6 years 7 days  
Vested and exercisable at the end of the period   3 years 6 months 3 days  
Aggregate Intrinsic Value      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value   $ 118,978  
Options exercised (in dollars)   45,817  
Outstanding at the end of the period (in dollars) $ 85,891 85,891 $ 118,978
Vested and expected to vest at the end of the period (in dollars) 83,546 83,546  
Vested and exercisable at the end of the period (in dollars) 35,735 35,735  
Unrecognized compensation cost      
Total unrecognized compensation cost related to stock options $ 25,902 $ 25,902  
Weighted-average period over which unrecognized compensation cost is expected to be recognized   1 year 9 months 18 days  
RSUs      
Number of Shares      
Balances at the beginning of the period (in shares)   13,141,650  
Restricted stock granted (in shares)   2,177,411  
Restricted stock vested (in shares)   (3,587,192)  
Restricted stock forfeited and canceled (in shares)   (1,143,776)  
Balances at the end of the period (in shares) 10,588,093 10,588,093 13,141,650
Restricted stock vested and expected to vest at the end of the period (in shares) 9,951,791 9,951,791  
Unrecognized compensation cost      
Total unrecognized compensation cost related to other awards $ 987,500 $ 987,500  
Weighted-average period over which unrecognized compensation cost is expected to be recognized   2 years 6 months  
Additional disclosures      
Weighted-average grant date fair value of awards granted (in dollars per share)   $ 155.42  
PSUs      
Number of Shares      
Restricted stock granted (in shares)   318,514  
Performance period   1 year  
Vesting period   4 years  
Unrecognized compensation cost      
Total unrecognized compensation cost related to other awards $ 95,020 $ 95,020  
Weighted-average period over which unrecognized compensation cost is expected to be recognized   1 year 2 months 12 days  
Additional disclosures      
Weighted-average grant date fair value of awards granted (in dollars per share)   $ 205.02  
RSAs      
Number of Shares      
Balances at the beginning of the period (in shares)   857,793  
Restricted stock granted (in shares)   23,475  
Restricted stock vested (in shares)   (344,794)  
Restricted stock forfeited and canceled (in shares)   (850)  
Balances at the end of the period (in shares) 535,624 535,624 857,793
Unrecognized compensation cost      
Total unrecognized compensation cost related to other awards $ 47,319 $ 47,319  
Weighted-average period over which unrecognized compensation cost is expected to be recognized   1 year 10 months 24 days  
Additional disclosures      
Weighted-average grant date fair value of awards granted (in dollars per share)   $ 194.07  
Minimum | PSUs      
Number of Shares      
Award vesting rights   0.00%  
Maximum | PSUs      
Number of Shares      
Award vesting rights   200.00%  
Additional award vesting rights   50.00%