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v3.23.1

Financial Instruments (Narrative) (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2023 | Jul. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items] |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | $ 2 |
Other Current Assets [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Margin Deposit Assets | $ 24 | $ 8
Foreign Exchange Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Maximum Length of Time, Foreign Currency Cash Flow Hedge | 18 months |
Interest Rate Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | $ 0 | 0
Commodity Derivative Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Maximum Length of Time Hedged in Price Risk Cash Flow Hedge | 18 months |
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 |
Derivatives Designated As Hedges [Member] | Foreign Exchange Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | $ 139 | 140
Derivatives Designated As Hedges [Member] | Commodity Derivative Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | 0 | 3
Derivatives Not Designated As Hedges [Member] | Foreign Exchange Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | 18 | 13
Derivatives Not Designated As Hedges [Member] | Commodity Derivative Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | 250 | 254
Derivatives Not Designated As Hedges [Member] | Embedded Derivative Financial Instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | 77 | 39
Derivatives Not Designated As Hedges [Member] | Equity Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | $ 42 | $ 50
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%

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