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Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 28, 2023 | Jan. 29, 2022 | Jan. 28, 2023 | Jan. 29, 2022
Income Tax Disclosure [Abstract] |  |  |  |
Income before provision for income taxes | $ 3,415 | $ 3,603 | $ 6,890 | $ 7,260
Provision for income taxes | $ 642 | $ 630 | $ 1,447 | $ 1,307
Effective tax rate | 18.80% | 17.50% | 21.00% | 18.00%

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