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Stockholders' Equity - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
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Jul. 27, 2024 | Jul. 29, 2023 | Jul. 30, 2022
Stockholders' Equity Note [Abstract] |  |  |
Shares (in shares) | 117 | 88 | 146
Weighted-Average Price per Share (in dollars per share) | $ 49.45 | $ 48.49 | $ 52.82
Amount | $ 5,764 | $ 4,271 | $ 7,734

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