Summary of Significant Accounting Policies - Useful lives of intangible assets (Details)	Jan. 31, 2026
Existing technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	3 years
Existing technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	5 years
Customer contracts & related relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	4 years
Customer contracts & related relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	10 years
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	1 year
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	5 years