Financial Instruments (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Millions	Oct. 31, 2021	Aug. 01, 2021
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivative Assets	$ 56	$ 57
Derivative Asset, Not Offset, Policy Election Deduction	0	(1)
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election, Total	56	56
Derivative Liability	3	3
Derivative Liability, Not Offset, Policy Election Deduction	0	(1)
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 3	$ 2

Fair value, after effects of master netting arrangements, deduction of assets not subject to a master netting arrangement and elected not to be offset, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against an obligation to return collateral.

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