Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Jan. 31, 2026 USD ($) segment	Jan. 31, 2025 USD ($)	Jan. 31, 2024 USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization period for initial contracts for capitalized contract acquisition costs	4 years
Amortization period for renewal contracts for capitalized contract acquisition costs	2 years
Amortization of expense related to contract acquisition costs	$ 18,900,000	$ 17,500,000	$ 17,800,000
Impairment charge in relation to contract acquisition costs	$ 0	0	0
Number of operating segments | segment	1
Goodwill acquired	$ 0	0	0
Impairment charges for goodwill or long-lived assets	0	0	0
Advertising expense	$ 10,000,000.0	$ 9,000,000.0	$ 11,700,000
Foreign Currency Cash Concentration Risk | Cash and Cash Equivalents | Currency other than United States dollar
Finite-Lived Intangible Assets [Line Items]
Concentration risk percentage	24.00%	32.00%
Capitalized internal-use software development costs
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of property and equipment	3 years
Minimum
Finite-Lived Intangible Assets [Line Items]
Lease renewal terms	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Lease renewal terms	3 years