Commitments and Contingencies - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Jun. 30, 2023	Jan. 31, 2023
Other Commitments [Line Items]
Sublease income	$ 2,900,000	$ 3,000,000	$ 9,100,000	$ 9,700,000
Cost of matching contributions	0	$ 0	0	$ 0
Loss contingency accrual	0		0
Letters of credit outstanding	17,700,000		17,700,000
Minimum
Other Commitments [Line Items]
Loss contingency, range of possible loss	0		0
Maximum
Other Commitments [Line Items]
Loss contingency, range of possible loss	25,000,000		25,000,000
Cloud Infrastructure Agreements, Between June 2023 And May 2028
Other Commitments [Line Items]
Payment for other commitment					$ 1,000,000,000
Cloud Infrastructure Agreements, Between September 2020 And December 2025
Other Commitments [Line Items]
Payment for other commitment						$ 416,400,000
Office Facility Outside Of U.S.
Other Commitments [Line Items]
Lessee, operating lease, liability, to be paid	$ 33,800,000		33,800,000
Right-of-use asset obtained in exchange for operating lease liability			$ 31,000,000