Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Payment terms for deferred revenue	30 days
Commissions capitalized as contract costs	$ 121,000,000	$ 171,000,000
Amortization of contract costs	84,000,000	57,000,000	$ 40,000,000
Advertising expenses	$ 77,000,000	79,000,000	33,000,000
Expected dividend yield	0.00%
Noncurrent portion of restricted cash	$ 7,000,000	8,000,000
Goodwill impairments	0	0	0
Interest expense decrease	$ (11,000,000)	$ (91,000,000)	$ (73,000,000)
Net loss per share, basic, decrease (in dollars per share)	$ 5.16	$ 5.73	$ 2.09
Net loss per share, diluted, decrease (in dollars per share)	$ 5.16	$ 5.73	$ 2.09
RSUs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Requisite service period	4 years
Capitalized internal-use software costs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Intangible asset, useful life	3 years
Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest expense decrease	$ 85,000,000
Net loss per share, basic, decrease (in dollars per share)	$ 0.54
Net loss per share, diluted, decrease (in dollars per share)	$ 0.54
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract duration	1 year
Amortization period for capitalized contract costs	2 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract duration	5 years
Amortization period for capitalized contract costs	5 years