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Goodwill and Purchased Intangible Assets - Schedule of Intangible Assets Acquired Through Business Combinations (Details) - USD ($) $ in Millions |  | 12 Months Ended
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Mar. 18, 2024 | Jul. 27, 2024 | Jul. 29, 2023
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Total intangible assets acquired |  | $ 11,050 | $ 150
Splunk |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Total intangible assets acquired |  | 10,550 |
Acquisitions |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Total intangible assets acquired |  | 500 |
IPR&D |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Indefinite-lived intangible assets acquired |  | 14 | $ 0
IPR&D | Splunk |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Indefinite-lived intangible assets acquired |  | 0 |
IPR&D | Acquisitions |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Indefinite-lived intangible assets acquired |  | 14 |
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
Finite lived intangible assets acquired |  | $ 4,300 | $ 138
TECHNOLOGY | Splunk |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) | 6 years | 6 years |
Finite lived intangible assets acquired |  | $ 3,900 |
TECHNOLOGY | Acquisitions |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) |  | 4 years 9 months 18 days |
Finite lived intangible assets acquired |  | $ 400 |
CUSTOMER RELATED |  |  |
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
Finite lived intangible assets acquired |  | $ 6,223 | $ 12
CUSTOMER RELATED | Splunk |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) |  | 9 years 1 month 6 days |
Finite lived intangible assets acquired |  | $ 6,140 |
CUSTOMER RELATED | Acquisitions |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) |  | 4 years 10 months 24 days |
Finite lived intangible assets acquired |  | $ 83 |
TRADE NAME |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Finite lived intangible assets acquired |  | $ 513 |
TRADE NAME | Splunk |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) | 12 years | 12 years |
Finite lived intangible assets acquired |  | $ 510 |
TRADE NAME | Acquisitions |  |  |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items] |  |  |
Weighted- Average Useful Life (in Years) |  | 1 year 3 months 18 days |
Finite lived intangible assets acquired |  | $ 3 |

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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://www.xbrl.org/2003/role/disclosureRef -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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
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