Supplemental Financial Statement Data (Schedule of Statements of Cash Flow) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 28, 2024	Jul. 30, 2023	Jul. 31, 2022
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
Operating Lease, Right-of-Use Asset, Amortization Expense	$ 90	$ 80	$ 74
Amortization of Debt Issuance Costs and Discounts	8	4	5
Benefit related expense	12	4	3
Other	28	12	6
Other Noncash Income (Expense)	138	100	88
Employee Benefits And Deferred Compensation Payments	(40)	(47)	(45)
Increase (Decrease) in Other Cash Operating Activities, Cash Flow Statement	(37)	(4)	3
Other	(77)	(51)	(42)
Interest Paid, Excluding Capitalized Interest, Operating Activities	194	193	188
Interest Received	6	4	1
Income Taxes Paid, Net	252	268	196
Capital Expenditures Incurred but Not yet Paid	$ 109	$ 122	$ 95