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Net Income per Share Attributable to Common Stockholders - Schedule of Calculation of Basic and Diluted Net Income Per Share Attributable to Common Stockholders (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Jul. 31, 2025
Jul. 31, 2024
Numerator:        
Net income attributable to common stockholders $ 62,970 $ 888,211 $ 135,057 $ 921,971
Denominator:        
Weighted-average common shares outstanding, basic (in shares) 202,644 204,604 202,957 205,231
Effect of dilutive securities (in shares) 8,312 3,670 8,921 4,328
Weighted-average common shares outstanding, diluted (in shares) 210,956 208,274 211,878 209,559
Net income per share attributable to common stockholders:        
Basic (in usd per share) $ 0.31 $ 4.34 $ 0.67 $ 4.49
Diluted (in usd per share) $ 0.30 $ 4.26 $ 0.64 $ 4.40