Share-Based Compensation - Summary of Performance Share Units Activity (Detail) - $ / shares	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Weighted average fair value	$ 41.92	$ 26.96	$ 25.38
Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested awards outstanding at beginning of year, Shares	500,891
Granted, Shares	107,345
Vested, Shares	(157,082)
Forfeited, Shares	0
Non-vested awards outstanding at end of year, Shares	451,154	500,891
Non-vested awards outstanding at beginning of year, Weighted average fair value	$ 29.55
Granted, Weighted average fair value	41.92
Vested, Weighted average fair value	31.26	$ 33.01	$ 27.79
Forfeited, Weighted average fair value	0
Non-vested awards outstanding at end of year, Weighted average fair value	$ 31.9	$ 29.55

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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