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Segment Information and Major Customers - Summary of Net Revenue for Groups of Similar Products and Services (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 01, 2021 | Apr. 25, 2020 | May 01, 2021 | Apr. 25, 2020
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | $ 12,803 | $ 11,983 | $ 36,692 | $ 37,147
Total Product |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | 9,139 | 8,597 | 26,298 | 27,146
Infrastructure Platforms |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | 6,832 | 6,447 | 19,564 | 20,566
Applications |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | 1,426 | 1,363 | 4,160 | 4,211
Security |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | 876 | 778 | 2,559 | 2,343
Other Products |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | 6 | 9 | 15 | 27
Services |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Revenue | $ 3,664 | $ 3,386 | $ 10,394 | $ 10,001

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