Commitments and Contingencies (Details)	3 Months Ended		6 Months Ended		17 Months Ended
	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2025 USD ($) complaint	Jul. 30, 2025 motion	Jan. 31, 2025 USD ($)
Other Commitments [Line Items]
Asset impairment charges			$ 108,619,000	$ 0
Lease not yet commenced	$ 38,400,000		38,400,000		$ 38,400,000
Sublease income	0	$ 0	0	0
Cost of matching contributions	0	0	0	0
Loss contingency accrual	0		0		0		$ 0
Letters of credit outstanding	20,800,000		20,800,000		$ 20,800,000
Indemnification Agreement
Other Commitments [Line Items]
Loss contingency, loss in period	$ 0	$ 0	0	$ 0
San Mateo Office Facility
Other Commitments [Line Items]
Operating lease, impairment loss			87,800,000
Leasehold Improvements And Furniture And Fixtures | San Mateo Office Facility
Other Commitments [Line Items]
Asset impairment charges			$ 20,800,000
US District Court Of California V Snowflake, Inc.
Other Commitments [Line Items]
Loss contingency, number of new claims filed | complaint					5
LAUSD Claims
Other Commitments [Line Items]
Loss contingency, number of pending claims | motion						3
Minimum
Other Commitments [Line Items]
Lease not yet commenced, term of contract (in years)	5 years 3 months 18 days		5 years 3 months 18 days		5 years 3 months 18 days
Loss contingency, range of possible loss	$ 0		$ 0		$ 0
Maximum
Other Commitments [Line Items]
Lease not yet commenced, term of contract (in years)	6 years 1 month 6 days		6 years 1 month 6 days		6 years 1 month 6 days
Loss contingency, range of possible loss	$ 25,000,000		$ 25,000,000		$ 25,000,000