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Summary of Restricted Stock Activity (Detail) shares in Thousands	9 Months Ended
	Oct. 31, 2020 $ / shares shares
Time Based Restricted Stock Units
Shares
Nonvested - beginning of period | shares	2,196
Granted | shares	2,701
Vested | shares	(948)
Cancelled | shares	(247)
Nonvested - end of period | shares	3,702
Weighted-Average Grant Date Fair Value
Nonvested - beginning of period | $ / shares	$ 18.56
Granted | $ / shares	9.31
Vested | $ / shares	16.66
Cancelled | $ / shares	16.47
Nonvested - end of period | $ / shares	$ 12.41
Performance-Based Restricted Stock Units
Shares
Nonvested - beginning of period | shares	2,138
Granted | shares	503
Vested | shares	(319)
Cancelled | shares	(467)
Nonvested - end of period | shares	1,855
Weighted-Average Grant Date Fair Value
Nonvested - beginning of period | $ / shares	$ 18.38
Granted | $ / shares	15.83
Vested | $ / shares	14.50
Cancelled | $ / shares	22.28
Nonvested - end of period | $ / shares	$ 17.37

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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- Definition

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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- Definition

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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-Name Accounting Standards Codification
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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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