Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Payment terms for deferred revenue	30 days
Commissions capitalized as contract costs	$ 186,000,000	$ 158,000,000
Amortization of contract costs	130,000,000	104,000,000	$ 84,000,000
Advertising expenses	$ 68,000,000	65,000,000	77,000,000
Expected dividend yield	0.00%
Restricted cash	$ 6,000,000	8,000,000
Goodwill impairments	$ 0	$ 0	$ 0
Capitalized internal-use software costs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Intangible asset, useful life	3 years
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract duration	1 year
Minimum | RSUs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Requisite service period	3 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract duration	5 years
Amortization period for capitalized contract costs	5 years
Maximum | RSUs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Requisite service period	4 years