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Summary of Restricted Stock Activity (Detail) shares in Thousands	6 Months Ended
	Jul. 31, 2021 $ / shares shares
Time Based Restricted Stock Units
Shares
Nonvested - beginning of period | shares	3,698
Granted | shares	657
Vested | shares	(1,268)
Cancelled | shares	(163)
Nonvested - end of period | shares	2,924
Weighted-Average Grant Date Fair Value
Nonvested - beginning of period | $ / shares	$ 12.42
Granted | $ / shares	32.64
Vested | $ / shares	13.45
Cancelled | $ / shares	12.68
Nonvested - end of period | $ / shares	$ 16.30
Performance-Based Restricted Stock Units
Shares
Nonvested - beginning of period | shares	1,868
Granted | shares	320
Vested | shares	(275)
Cancelled | shares	(308)
Nonvested - end of period | shares	1,605
Weighted-Average Grant Date Fair Value
Nonvested - beginning of period | $ / shares	$ 17.44
Granted | $ / shares	39.93
Vested | $ / shares	19.48
Cancelled | $ / shares	16.88
Nonvested - end of period | $ / shares	$ 23.67

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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- Definition

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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- Definition

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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-Publisher FASB
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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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