Commitments and Contingencies (Details) $ in Millions				12 Months Ended
	Jul. 30, 2020 officer	Jun. 11, 2020 officer	Apr. 08, 2020 officer	Jan. 31, 2024 USD ($)	Jul. 17, 2023 USD ($)	Jan. 31, 2023 USD ($)	Nov. 17, 2021 lawsuit
Other Commitments [Line Items]
Number of derivative lawsuits | lawsuit							3
Pending Litigation | Violation Of Securities Act Section 10(b), 20(a), and Rule 10b-5
Other Commitments [Line Items]
Amount of payment agreed upon					$ 150.0
Settled Litigation | Violation Of Securities Act Section 10(b), 20(a), and Rule 10b-5
Other Commitments [Line Items]
Payments for legal settlements				$ 60.0
Payments for legal settlements, gross				150.0
Payments for legal settlements, net of insurance payment				90.0
Loss contingency accrual						$ 7.5
Aggregate legal settlement charge				$ 52.5
Violation Of Securities Act Section 10(b), 20(a), and Rule 10b-5
Other Commitments [Line Items]
Loss contingency, number of defendants | officer	8	9	2