Revenue - Additional Information (Details) - USD ($)	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Jan. 31, 2025
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	$ 320,100,000		$ 359,800,000
Percent of revenue recognized from deferred revenue	24.00%	33.00%
Remaining performance obligation	$ 774,300,000
Unbilled contracts receivable	30,600,000		22,500,000
Deferred commissions	355,600,000		363,400,000
Noncurrent capitalized contract cost	239,300,000		$ 250,700,000
Amortization of deferred commissions	31,200,000	$ 26,400,000
Impairment loss	$ 0	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	58.00%
Expected timing of satisfaction of remaining performance obligation	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	38.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction of remaining performance obligation	13 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction of remaining performance obligation	36 months