Revenue - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023	Jan. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	$ 304,900,000		$ 304,900,000		$ 377,400,000
Percent of revenue recognized from deferred revenue			22.00%	31.00%
Remaining performance obligation, percentage	57.00%		57.00%
Unbilled contracts receivable	$ 13,700,000		$ 13,700,000		22,700,000
Deferred commissions	333,000,000		333,000,000		294,200,000
Noncurrent capitalized contract cost	229,300,000		229,300,000		$ 201,700,000
Amortization of deferred commissions	28,600,000	$ 25,300,000	82,200,000	$ 72,800,000
Impairment loss	0	$ 0	0	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 728,000,000.0		$ 728,000,000.0
Expected timing of satisfaction of remaining performance obligation	12 months		12 months