Financial Instruments (Schedule Of The Fair Value Of Derivative Instruments) (Details) - USD ($) $ in Millions	Aug. 03, 2025	Jul. 28, 2024
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 15	$ 11
Derivatives liabilities at fair value	14	16
Derivatives Designated As Hedges [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0	2
Derivatives liabilities at fair value	3	0
Derivatives Designated As Hedges [Member] \| Foreign Exchange Contract [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0	2
Derivatives Designated As Hedges [Member] \| Foreign Exchange Contract [Member] \| Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives liabilities at fair value	3	0
Derivatives Not Designated As Hedges [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	15	9
Derivatives liabilities at fair value	11	16
Derivatives Not Designated As Hedges [Member] \| Commodity Derivative Contracts [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	12	6
Derivatives Not Designated As Hedges [Member] \| Commodity Derivative Contracts [Member] \| Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives liabilities at fair value	11	16
Derivatives Not Designated As Hedges [Member] \| Equity Contract [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	1	3
Derivatives Not Designated As Hedges [Member] \| Foreign Exchange Contract [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 2	$ 0