Financial Instruments (Derivatives Not Designated As Hedges) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jan. 26, 2025 |
Jan. 28, 2024 |
Jan. 26, 2025 |
Jan. 28, 2024 |
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Amount of (Gain) or Loss Recognized in Earnings on Derivatives | $ (18) | $ (14) | $ (25) | $ 1 |
| 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 | (1) | 1 | (1) | 0 |
| 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 | (14) | (8) | (18) | 4 |
| 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) | $ (7) | $ (6) | $ (3) |