Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 29, 2023	Jul. 30, 2022	Jul. 31, 2021
Federal:
Current	$ 3,754	$ 2,203	$ 1,959
Deferred	(1,955)	(176)	(203)
Total	1,799	2,027	1,756
State:
Current	623	458	513
Deferred	(175)	(156)	(46)
Total	448	302	467
Foreign:
Current	412	313	583
Deferred	46	23	(135)
Total	458	336	448
Total	$ 2,705	$ 2,665	$ 2,671