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Revenue from Contracts with Customers - Narrative (Detail)	9 Months Ended
	Feb. 02, 2020 USD ($) Segment	Apr. 28, 2019 USD ($)	Jan. 27, 2019 USD ($)
Contract Assets and Liabilities [Line Items]
Number of operating segments | Segment	3
Contract assets recognized | $	$ 0	$ 0	$ 0
Minimum [Member]
Contract Assets and Liabilities [Line Items]
Contract with customers credit period	15 days
Maximum [Member]
Contract Assets and Liabilities [Line Items]
Contract with customers credit period	45 days

X

- Definition

Contract assets and liabilities.

+ References

No definition available.

+ Details

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- Definition

Credit terms for contracts with customers where upfront deposits or prepayment are not required.

+ References

No definition available.

+ Details

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130533-203044

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X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

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