Commitment and Contingencies - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Jun. 30, 2023	Jan. 31, 2023
Other Commitments [Line Items]
Sublease income	$ 3,100,000	$ 3,300,000	$ 6,200,000	$ 6,600,000
Cost of matching contributions	0	$ 0	0	$ 0
Letters of credit outstanding	17,900,000		17,900,000
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	35,700,000		$ 35,700,000
Right-of-use asset obtained in exchange for operating lease liability	$ 31,000,000