Borrowings (Schedule Of Short-Term Debt) (Details) - USD ($)	Apr. 29, 2017	Jul. 30, 2016
Short-term Debt [Line Items]
Amount	$ 4,248,000,000	$ 4,160,000,000
Current portion of long-term debt
Short-term Debt [Line Items]
Amount	$ 2,248,000,000	$ 4,159,000,000
Effective Rate	1.58%	0.97%
Commercial paper
Short-term Debt [Line Items]
Amount	$ 2,000,000,000	$ 0
Effective Rate	0.88%	0.00%
Other notes and borrowings
Short-term Debt [Line Items]
Amount	$ 0	$ 1,000,000
Effective Rate	0.00%	2.08%

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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