Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 25, 2020
Federal:
Current	$ 2,203	$ 1,959	$ 1,101
Deferred	(176)	(203)	(374)
Total	2,027	1,756	727
State:
Current	458	513	264
Deferred	(156)	(46)	287
Total	302	467	551
Foreign:
Current	313	583	1,429
Deferred	23	(135)	49
Total	336	448	1,478
Total	$ 2,665	$ 2,671	$ 2,756