Property and Equipment, Net - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Property, Plant and Equipment
Depreciation	$ 27,000,000.0	$ 21,200,000	$ 51,700,000	$ 38,000,000.0
Accumulated amortization, property, plant, and equipment	$ 17,000,000.0	$ 13,300,000	33,800,000	24,200,000
Asset impairment charges			108,619,000	$ 0
Leasehold Improvements And Furniture And Fixtures | San Mateo Office Facility
Property, Plant and Equipment
Asset impairment charges			$ 20,800,000