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Goodwill and Purchased Intangible Assets - Schedule of Goodwill by Reportable Segments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 31, 2021 | Jul. 25, 2020
Goodwill [Roll Forward] |  |
Beginning balance | $ 33,806 | $ 33,529
Acquisitions & Divestitures | 4,214 | 198
Foreign Currency Translation and Other | 148 | 79
Ending balance | 38,168 | 33,806
Americas |  |
Goodwill [Roll Forward] |  |
Beginning balance | 21,304 | 21,120
Acquisitions & Divestitures | 2,275 | 132
Foreign Currency Translation and Other | 94 | 52
Ending balance | 23,673 | 21,304
EMEA |  |
Goodwill [Roll Forward] |  |
Beginning balance | 8,040 | 7,977
Acquisitions & Divestitures | 1,019 | 44
Foreign Currency Translation and Other | 35 | 19
Ending balance | 9,094 | 8,040
APJC |  |
Goodwill [Roll Forward] |  |
Beginning balance | 4,462 | 4,432
Acquisitions & Divestitures | 920 | 22
Foreign Currency Translation and Other | 19 | 8
Ending balance | $ 5,401 | $ 4,462

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- Definition 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. + References 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 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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