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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |
--- | --- | ---
Oct. 30, 2021 | Oct. 24, 2020 | Jul. 31, 2021
Class of Stock [Line Items] |  |  |
Cash dividends paid per common share (in dollars per share) | $ 0.37 | $ 0.36 |
Payments of dividends | $ 1,561 | $ 1,520 |
Remaining authorized repurchase amount | 7,700 |  |
Stock repurchase program |  |  |
Class of Stock [Line Items] |  |  |
Stock repurchases pending settlement | $ 8 |  | $ 25

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