Commitments and Contingencies (Narrative) (Details) $ in Millions	12 Months Ended
Jul. 30, 2017 USD ($)	Jul. 31, 2016 USD ($)	Aug. 02, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense, Net	$ 53	$ 45	$ 48
Number of bank loans guarantees related to independent distributors	2,000
Maximum potential amount of future payments	$ 204

Number of bank loans guarantees related to independent distributors

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- References

No definition available.

+ Details

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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