v3.26.1
Balance Sheet Components - Additional Information (Details) - USD ($)
 3 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Jan. 31, 2026
Finite-Lived Intangible Assets [Line Items]      
Prepaid expense $ 274,400,000 $ 232,200,000  
Other current assets 186,600,000 64,000,000.0  
Depreciation and amortization 75,500,000 56,400,000  
Impairment of property and equipment 0 0  
Capitalized amount of internal use software 21,400,000 29,500,000  
Amortization expense associated with internal use software 23,500,000 17,500,000  
Net book value of capitalized internal use software 182,600,000   $ 184,700,000
Amortization of intangible assets $ 12,405,000 $ 7,634,000  
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives (in years) 2 years    
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Useful lives (in years) 20 years    
Data center and other computer equipment      
Finite-Lived Intangible Assets [Line Items]      
Equipment purchased but not yet placed into service $ 225,000,000.0