Financial Instruments (Derivatives Not Designated As Hedges) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Oct. 27, 2024 |
Oct. 29, 2023 |
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of (Gain) or Loss Recognized in Earnings on Derivatives | $ (7) | $ 15 |
| Foreign Exchange Contract [Member] | Cost Of Products Sold [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of (Gain) or Loss Recognized in Earnings on Derivatives | 0 | (1) |
| Commodity Derivative Contracts [Member] | Cost Of Products Sold [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of (Gain) or Loss Recognized in Earnings on Derivatives | (4) | 12 |
| Equity Contracts [Member] | General and Administrative Expense [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Amount of (Gain) or Loss Recognized in Earnings on Derivatives | $ (3) | $ 4 |