Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	Apr. 29, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 3,957	$ 3,801	$ 10,847	$ 11,061
Provision for income taxes	$ 745	$ 757	$ 2,192	$ 2,064
Effective tax rate	18.80%	19.90%	20.20%	18.70%