Goodwill and Purchased Intangible Assets (Schedule Of Goodwill By Reportable Segments) (Details) $ in Millions	6 Months Ended
Jan. 23, 2016 USD ($)
Goodwill [Roll Forward]
Balance (Beg)	$ 24,469
Acquisitions	940
Divestiture	(141)
Other	(310)
Balance (End)	24,958
Americas
Goodwill [Roll Forward]
Balance (Beg)	15,212
Acquisitions	672
Divestiture	(126)
Other	(194)
Balance (End)	15,564
EMEA
Goodwill [Roll Forward]
Balance (Beg)	5,791
Acquisitions	195
Divestiture	(12)
Other	(73)
Balance (End)	5,901
APJC
Goodwill [Roll Forward]
Balance (Beg)	3,466
Acquisitions	73
Divestiture	(3)
Other	(43)
Balance (End)	$ 3,493

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 350
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-Paragraph 1
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