Stockholders' Equity - Summary of Changes In Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,920,158	$ 1,921,917
Other comprehensive income (loss), net of tax	2,462	(458)
Ending balance	1,955,537	1,880,194
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	7,612	10,899
Other comprehensive income (loss), net of tax	2,462	(458)
Ending balance	10,074	10,441
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	8,231	11,234
Other comprehensive income (loss), net of tax	2,319	2
Ending balance	10,550	11,236
Unrealized Gain (Loss) on Marketable Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(619)	(335)
Other comprehensive income (loss), net of tax	143	(460)
Ending balance	$ (476)	$ (795)