Stockholders' Equity - Summary of Changes In Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2025	Jul. 31, 2025	Apr. 30, 2025	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Oct. 31, 2025	Oct. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,665,703	$ 1,698,461	$ 1,845,762	$ 1,833,581	$ 2,027,004	$ 2,016,114	$ 1,845,762	$ 2,016,114
Other comprehensive income, net of tax	2,943	(4,776)	34,413	819	3,365	(4,085)	32,580	99
Ending balance	1,924,617	1,665,703	1,698,461	1,731,845	1,833,581	2,027,004	1,924,617	1,731,845
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	24,747	29,523	(4,890)	8,105	4,740	8,825	(4,890)	8,825
Other comprehensive income, net of tax	2,943	(4,776)	34,413	819	3,365	(4,085)
Ending balance	27,690	$ 24,747	29,523	8,924	$ 8,105	4,740	27,690	8,924
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(4,518)			8,925	(4,518)	8,925
Other comprehensive income, net of tax							32,007	441
Ending balance	27,489			9,366			27,489	9,366
Unrealized (Loss) Gain on Marketable Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ (372)			$ (100)	(372)	(100)
Other comprehensive income, net of tax							573	(342)
Ending balance	$ 201			$ (442)			$ 201	$ (442)