Commitment and Contingencies - Narrative (Details) - USD ($)	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Sublease income	$ 3,100,000	$ 3,400,000
Lessee, Lease, lease not yet commenced, undiscounted amount	$ 37,000,000
Lessee, lease, lease not yet commenced, term of contract (in years)	8 years 6 months
Cost of matching contributions	$ 0	$ 0
Letters of credit outstanding	$ 17,800,000