Leases (Costs) (Details) - USD ($) $ in Millions		3 Months Ended
		Nov. 01, 2020	Oct. 27, 2019
Operating Lease, Cost		$ 20	$ 19
Finance lease, amortization of right-of-use assets		1	0
Short-term Lease, Cost		10	10
Variable Lease, Cost	[1]	46	43
Sublease Income		(1)	0
Lease, Cost, Total	[2]	$ 76	72
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Lease, Cost, Total			$ 2

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

[2] Total lease cost in the three-month period ended October 27, 2019, included $2 related to discontinued operations.