v3.25.4
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Jan. 31, 2023
Operating Loss Carryforwards [Line Items]        
Income taxes paid, net of refunds received $ 51,464 $ 19,022 $ 22,608  
Provision for income taxes 34,176 71,130 32,232  
Valuation allowance increase (decrease), amount 320,300 233,600 52,000  
Deferred tax assets, valuation allowance 1,523,498 1,203,216 1,000,000  
Research and other credit carryforwards 210,753 144,068    
Unrecognized tax benefits 137,808 117,540 58,875 $ 36,901
Unrecognized tax benefits that would impact effective tax rate 41,000      
Interest and penalties 6,600 $ 3,000 $ 1,400  
United States        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 2,600,000      
Research and other credit carryforwards 227,000      
State and Local Jurisdiction        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 998,300      
California        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 417,400      
Research and other credit carryforwards 59,800      
United Kingdom        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards $ 84,200