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Revenue - Summary of Disaggregation of Revenue (Detail) - USD ($) $ in Millions	12 Months Ended
	Apr. 24, 2020	Apr. 26, 2019	Apr. 27, 2018
Disaggregation Of Revenue [Line Items]
Net revenues	$ 5,412	$ 6,146	$ 5,919
Product Revenues
Disaggregation Of Revenue [Line Items]
Net revenues	2,995	3,755	3,525
Strategic
Disaggregation Of Revenue [Line Items]
Net revenues	1,806	2,100	1,709
Mature
Disaggregation Of Revenue [Line Items]
Net revenues	1,189	1,655	1,816
Software Maintenance Revenues
Disaggregation Of Revenue [Line Items]
Net revenues	1,034	946	902
Hardware Maintenance and Other Services Revenues
Disaggregation Of Revenue [Line Items]
Net revenues	1,383	1,445	1,492
Hardware Maintenance Support Contracts
Disaggregation Of Revenue [Line Items]
Net revenues	1,142	1,182	1,214
Professional and Other Services
Disaggregation Of Revenue [Line Items]
Net revenues	$ 241	$ 263	$ 278

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+ References

No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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