Goodwill and Purchased Intangible Assets - Schedule of Goodwill by Reportable Segments (Details) $ in Millions	9 Months Ended
May 01, 2021 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 33,806
Acquisitions & Divestitures	3,634
Foreign Currency Translation and Other	250
Ending Balance	37,690
Americas
Goodwill [Roll Forward]
Beginning Balance	21,304
Acquisitions & Divestitures	1,902
Foreign Currency Translation and Other	157
Ending Balance	23,363
EMEA
Goodwill [Roll Forward]
Beginning Balance	8,040
Acquisitions & Divestitures	869
Foreign Currency Translation and Other	59
Ending Balance	8,968
APJC
Goodwill [Roll Forward]
Beginning Balance	4,462
Acquisitions & Divestitures	863
Foreign Currency Translation and Other	34
Ending Balance	$ 5,359

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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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