Revenue - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Jan. 31, 2025
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	$ 367,000,000.0		$ 367,000,000.0		$ 359,800,000
Percent of revenue recognized from deferred revenue			17.00%	22.00%
Remaining performance obligation	994,300,000		$ 994,300,000
Unbilled contracts receivable	17,300,000		17,300,000		22,500,000
Deferred commissions	352,400,000		352,400,000		363,400,000
Noncurrent capitalized contract cost	229,500,000		229,500,000		$ 250,700,000
Amortization of deferred commissions	33,100,000	$ 28,600,000	101,200,000	$ 82,200,000
Impairment loss	$ 0	$ 0	$ 0	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	55.00%		55.00%
Expected timing of satisfaction of remaining performance obligation	12 months		12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	42.00%		42.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-11-01 | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction of remaining performance obligation	13 months		13 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-11-01 | Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction of remaining performance obligation	36 months		36 months