Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2023	Jul. 31, 2022
Leases [Abstract]
Operating Lease, Payments	$ 84	$ 78
Finance Lease, Principal Payments	17	17
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	117	79
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 17	$ 16