Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 2,887	$ 3,161	$ 5,154	$ 7,603
Provision for income taxes	$ 459	$ 527	$ 15	$ 1,331
Effective tax rate	15.90%	16.70%	0.30%	17.50%