Share-Based Compensation - Summary of the Activity for Performance-Based Restricted Stock Units (Details) - Performance-based RSUs - shares	12 Months Ended
Jan. 31, 2021	Jan. 26, 2020
Units
Ending balance (in shares)	0
Subject to share settlement
Units
Performance units vested (in shares)		(187,116)
Subject to cash settlement
Units
Performance units vested (in shares)		(187,116)

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Units Rollforward [Abstract]

No definition available.

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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