Fair Value Measurements (Fair Value Measurement Of Assets And Liabilities) (Details) - USD ($) $ in Millions | Jan. 28, 2024 | Jul. 30, 2023 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | | $ 18 | $ 20 |
Derivatives liabilities at fair value | | 32 | 6 |
Measured On Recurring Basis [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Total assets at fair value | | 19 | 21 |
Total liabilities at fair value | | 136 | 97 |
Measured On Recurring Basis [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Total assets at fair value | | 3 | 12 |
Total liabilities at fair value | | 110 | 94 |
Measured On Recurring Basis [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Total assets at fair value | | 7 | 7 |
Total liabilities at fair value | | 26 | 3 |
Measured On Recurring Basis [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Total assets at fair value | | 9 | 2 |
Measured On Recurring Basis [Member] | Foreign Exchange Forward [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [1] | 1 | 0 |
Derivatives liabilities at fair value | [1] | 0 | 1 |
Measured On Recurring Basis [Member] | Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [1] | 1 | 0 |
Derivatives liabilities at fair value | [1] | 0 | 1 |
Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [2] | 12 | 16 |
Derivatives liabilities at fair value | [2] | 9 | 5 |
Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [2] | 2 | 11 |
Derivatives liabilities at fair value | [2] | 6 | 3 |
Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [2] | 1 | 3 |
Derivatives liabilities at fair value | [2] | 3 | 2 |
Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [2] | 9 | 2 |
Measured On Recurring Basis [Member] | Equity Contracts [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [3] | 5 | 4 |
Measured On Recurring Basis [Member] | Equity Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivative assets at fair value | [3] | 5 | 4 |
Measured On Recurring Basis [Member] | Deferred Compensation Investment [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Investments at fair value | [4] | 1 | 1 |
Measured On Recurring Basis [Member] | Deferred Compensation Investment [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Investments at fair value | [4] | 1 | 1 |
Measured On Recurring Basis [Member] | Deferred Compensation Obligation [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Deferred compensation obligation | [4] | 104 | 91 |
Measured On Recurring Basis [Member] | Deferred Compensation Obligation [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Deferred compensation obligation | [4] | 104 | 91 |
Measured On Recurring Basis [Member] | Interest Rate Contract [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivatives liabilities at fair value | [5] | 23 | 0 |
Measured On Recurring Basis [Member] | Interest Rate Contract [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | |
Derivatives liabilities at fair value | [5] | $ 23 | $ 0 |
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[1] Based on observable market transactions of spot currency rates and forward rates. Level 1 and 2 are based on quoted futures exchanges and on observable prices of futures and options transactions in the marketplace. Level 3 is based on unobservable inputs in which there is little or no market data, which requires management’s own assumptions within an internally developed model. Based on index swap rates. Based on the fair value of the participants’ investments. Based on SOFR swap rates. | |