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Fair Value Measurements - Fair Value of Convertible Notes (Details) - Convertible Debt - USD ($) $ in Thousands	Oct. 31, 2023	Jan. 31, 2023	Jan. 31, 2021	Sep. 30, 2018
0.5% Convertible Senior Notes due in 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt interest rate percentage				0.50%
Aggregate principal amount	$ 0	$ 37,083
Fair value amount	0	38,981
0% Convertible Senior Notes due in 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt interest rate percentage			0.00%
Aggregate principal amount	690,000	690,000
Fair value amount	$ 680,326	$ 655,666

X

- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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