Description of Business and Significant Accounting Policies.

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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Description of Business and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	Jan. 24, 2020	Apr. 27, 2019	Apr. 26, 2019
Description Of Business And Significant Accounting Policies [Line Items]
Operating lease ROU assets, net of deferred rent and lease restructuring liabilities	$ 142		$ 0
Operating lease liabilities	$ 149
ASU 2016-02
Description Of Business And Significant Accounting Policies [Line Items]
Operating lease ROU assets, net of deferred rent and lease restructuring liabilities		$ 149
Operating lease liabilities		158
Cumulative-effect adjustment to retained earnings		$ 6	$ 6