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Equity Compensation - Summary of Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) - $ / shares
shares in Thousands
12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
Unreleased Restricted Stock Units (in thousands)      
Unvested restricted stock, beginning balance (in shares) 4,848    
Granted (in shares) 3,687    
Vested (in shares) (2,805)    
Canceled/Forfeited (in shares) (348)    
Performance adjustment (in shares) (11)    
Unvested restricted stock, ending balance (in shares) 5,371 4,848  
Weighted average grant date fair value per share      
Unvested restricted stock, beginning balance (in dollars per share) $ 216.20    
Granted (in dollars per share) 200.53 $ 198.89 $ 288.13
Vested (in dollars per share) 219.71    
Canceled/Forfeited (in dollars per share) 210.05    
Performance adjustment (in dollars per share) 189.41    
Unvested restricted stock, ending balance (in dollars per share) $ 203.87 $ 216.20  
Minimum      
Weighted average grant date fair value per share      
Performance shares payout   86.00%  
Maximum      
Weighted average grant date fair value per share      
Performance shares payout   110.00%