Property and Equipment, Net - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Property, Plant and Equipment
Depreciation	$ 29,100,000	$ 23,000,000.0	$ 80,800,000	$ 61,000,000.0
Accumulated amortization, property, plant, and equipment	$ 18,400,000	$ 15,200,000	52,200,000	39,400,000
Asset impairment charges			108,715,000	$ 0
Leasehold Improvements And Furniture And Fixtures | San Mateo Office Facility
Property, Plant and Equipment
Asset impairment charges			$ 20,800,000