v3.25.4
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Increase (decrease) in valuation allowance $ (55,000,000) $ 57,000,000  
Accrued penalties and interest related to unrecognized tax benefits 0 0 $ 0
Income taxes paid (net of refunds) 10,000,000 $ 17,000,000 $ 13,000,000
Domestic Tax Jurisdiction      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating loss carryforwards 2,781,000,000    
Domestic Tax Jurisdiction | Research Tax Credit Carryforward      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Tax credit carryforward 158,000,000    
State      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating loss carryforwards 2,031,000,000    
State | Research Tax Credit Carryforward      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Tax credit carryforward 100,000,000    
United Kingdom      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating loss carryforwards 30,000,000    
Israel      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Operating loss carryforwards $ 10,000,000