Leases (Costs) (Details) $ in Millions	12 Months Ended
	Aug. 02, 2020 USD ($)
Leases [Abstract]
Operating Lease, Cost	$ 81
Finance Lease, Right-of-Use Asset, Amortization	2
Short-term Lease, Cost	39
Variable Lease, Cost	172	[1]
Sublease Income	(3)
Lease, Cost	$ 291

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