Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Apr. 28, 2024	Jul. 30, 2023	Mar. 12, 2024
Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Margin Deposit Assets		$ 2
Accrued Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Margin Deposit Liability	$ (2)
Maximum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ (1)
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Maximum Length of Time, Foreign Currency Cash Flow Hedge	18 months
Treasury Lock [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 0	0
Commodity Derivative Contracts [Member] | Maximum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Term of Contract	18 months
Equity Contracts [Member] | Maximum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Term of Contract	12 months
Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 0	0
Derivatives Designated As Hedges [Member] | Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	75	125
Derivatives Designated As Hedges [Member] | Commodity Derivative Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	0	0
Derivatives Designated As Hedges [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	1,100		$ 1,100
Derivatives Not Designated As Hedges [Member] | Commodity Derivative Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	211	194
Derivatives Not Designated As Hedges [Member] | Embedded Derivative Financial Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	66	47
Derivatives Not Designated As Hedges [Member] | Equity Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	71	42
Derivatives Not Designated As Hedges [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 279	$ 15
Wal-Mart Stores, Inc. [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Concentration Risk, Percentage		22.00%
Top Five Customers [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Concentration Risk, Percentage		47.00%