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%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details