Leases (Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions	9 Months Ended
	May 01, 2022	May 02, 2021
Leases [Abstract]
Operating Lease, Payments	$ 58	$ 60
Finance Lease, Principal Payments	12	3
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	67	39
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 15	$ 4