Amount of lease cost recognized by lessee for lease contract.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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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
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Leases (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Leases (Narrative) (Details) - USD ($) $ in Millions	Apr. 26, 2020	Apr. 26, 2020	Aug. 02, 2020	Apr. 27, 2020
Lease, Cost	$ 74	$ 219
Operating Lease, Liability	$ 253	$ 253
Minimum [Member]
Term of lease contracts	1 year	1 year
Maximum [Member]
Term of lease contracts	15 years	15 years
Forecast [Member]
Operating Lease, Liability				$ 6
Term of lease contracts			5 years
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Lease, Cost		$ 4