v3.25.3
Balance Sheet Components - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Oct. 31, 2025
Oct. 31, 2024
Jan. 31, 2025
Finite-Lived Intangible Assets [Line Items]          
Depreciation and amortization $ 64,000,000.0 $ 49,000,000.0 $ 180,900,000 $ 137,900,000  
Impairment of property and equipment 0 0 0 0  
Capitalized amount of internal use software 29,500,000 27,900,000 90,000,000.0 70,400,000  
Amortization expense associated with internal use software 20,600,000 14,800,000 57,700,000 41,400,000  
Net book value of capitalized internal use software 176,400,000   176,400,000   $ 144,000,000.0
Amortization of intangible assets $ 7,800,000 $ 6,300,000 $ 23,061,000 $ 18,665,000  
Minimum          
Finite-Lived Intangible Assets [Line Items]          
Useful lives (in years) 2 years   2 years    
Maximum          
Finite-Lived Intangible Assets [Line Items]          
Useful lives (in years) 20 years   20 years    
Data center and other computer equipment          
Finite-Lived Intangible Assets [Line Items]          
Equipment purchased but not yet placed into service     $ 175,100,000