Leases (Costs) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jan. 30, 2022	Jan. 31, 2021	Jan. 30, 2022	Jan. 31, 2021
Operating Lease, Cost		$ 20	$ 20	$ 39	$ 40
Finance lease, amortization of right-of-use assets		4	1	8	2
Short-term Lease, Cost		14	11	27	21
Variable Lease, Cost	[1]	49	46	101	92
Sublease Income		0	0	0	(1)
Lease, Cost, Total		$ 87	$ 78	$ 175	$ 154

[1] Includes labor and other overhead in our service contracts with embedded leases.