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Summary of Significant Accounting Policies - Property, plant and equipment useful life (Details)
Jan. 31, 2025
Computer and network equipment  
Property, Plant and Equipment [Line Items]  
Useful life 3 years
Software, including capitalized software development costs | Minimum  
Property, Plant and Equipment [Line Items]  
Useful life 3 years
Software, including capitalized software development costs | Maximum  
Property, Plant and Equipment [Line Items]  
Useful life 5 years
Furniture and office equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Useful life 3 years
Furniture and office equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Useful life 4 years
Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Useful life 10 years