Financial Instruments (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Millions	Oct. 27, 2024	Jul. 28, 2024
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivative Assets	$ 7	$ 11
Derivative Asset, Not Offset, Policy Election Deduction	(1)	(1)
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election, Total	6	10
Derivative Liability	11	16
Derivative Liability, Not Offset, Policy Election Deduction	(1)	(1)
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 10	$ 15