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Goodwill and Purchased Intangible Assets - Schedule of Intangible Assets Acquired Through Business Combinations (Details) $ in Millions | 12 Months Ended
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Jul. 29, 2023 USD ($) acquisition | Jul. 30, 2022 USD ($) acquisition | Jul. 31, 2021 acquisition
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Number of business combinations (acquisition) | acquisition | 5 | 3 | 13
Total intangible assets acquired | $ 150 | $ 20 |
IPR&D |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Indefinite-lived intangible assets acquired | $ 0 | $ 0 |
TECHNOLOGY |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) | 3 years 8 months 12 days | 2 years 8 months 12 days |
Finite lived intangible assets acquired | $ 138 | $ 16 |
CUSTOMER RELATIONSHIPS |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) | 1 year 9 months 18 days | 2 years |
Finite lived intangible assets acquired | $ 12 | $ 4 |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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