v3.23.2
Stockholders' Equity - Stock Options (Details)
$ / shares in Units, $ in Millions
 6 Months Ended
Jul. 31, 2023
USD ($)
$ / shares
shares
Outstanding Stock Options  
Beginning Balance (in shares) | shares 115,000
Stock options exercised (in shares) | shares (14,000)
Stock options canceled (in shares) | shares 0
Ending Balance (in shares) | shares 101,000
Vested and expected to vest (in shares) | shares 101,000
Exercisable (in shares) | shares 101,000
Weighted-Average Exercise Price  
Beginning Balance (in dollars per share) | $ / shares $ 30.36
Stock options exercised (in dollars per share) | $ / shares 36.51
Stock options canceled (in dollars per share) | $ / shares 0
Ending Balance (in dollars per share) | $ / shares 29.53
Vested and expected to vest, Weighted-Average Exercise Price (in dollars per share) | $ / shares 29.53
Exercisable, Weighted-Average Exercise Price (in dollars per share) | $ / shares $ 29.53
Beginning balance, Aggregate Intrinsic Value | $ $ 17
Ending balance, Aggregate Intrinsic Value | $ 21
Vested and expected to vest, Aggregate Intrinsic Value | $ 21
Exercisable, Aggregate Intrinsic Value | $ $ 21