Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 30, 2022	Oct. 31, 2021
Leases [Abstract]
Operating Lease, Payments	$ 20	$ 19
Finance Lease, Principal Payments	4	4
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	15	14
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 0	$ 13