Income Taxes - Reconciliation of Statutory Federal Income Tax Rate to Effective Tax Rate (Before ASU Adoption) (Details)	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%
Foreign taxes		(11.60%)	(2.00%)
Non-deductible expenses		(9.50%)	(17.90%)
Stock-based compensation		(25.00%)	(4.60%)
Valuation allowance		62.20%	(5.70%)
Research and development credits	(1.40%)	14.70%	18.90%
Cross border tax law		(44.60%)	(27.40%)
Other, net		(1.60%)	(0.90%)
Effective income tax rate	(180.60%)	5.60%	(18.60%)