Taxes on Earnings Schedule Of Provision Of Income Taxes On Earnings Of Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2022	Aug. 01, 2021	Aug. 02, 2020
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ 160	$ 151	$ 152
Current State and Local Tax Expense (Benefit)	22	34	26
Current Foreign Tax Expense (Benefit)	15	6	3
Current Income Tax Expense (Benefit)	197	191	181
Deferred Federal Income Tax Expense (Benefit)	29	102	(12)
Deferred State and Local Income Tax Expense (Benefit)	(6)	33	4
Deferred Foreign Income Tax Expense (Benefit)	(2)	2	1
Deferred Income Tax Expense (Benefit)	21	137	(7)
Income Tax Expense (Benefit)	$ 218	$ 328	$ 174