Commitment and Contingencies - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	May 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Lessee, operating lease, modified lease, undiscounted amount					$ 68,000,000
Increase in operating lease right of use assets and operating lease liabilities upon modification of existing lease			$ 30,000,000
Sublease income	$ 3,000,000	$ 3,400,000	9,700,000	$ 9,800,000
Cost of matching contributions	0	$ 0	0	$ 0
Letters of credit outstanding	$ 16,800,000		$ 16,800,000