Borrowings (Schedule Of Short-Term Debt) (Details) - USD ($) $ in Millions |
Oct. 29, 2016 |
Jul. 30, 2016 |
|---|---|---|
| Short-term Debt [Line Items] | ||
| Amount | $ 4,155 | $ 4,160 |
| Current portion of long-term debt | ||
| Short-term Debt [Line Items] | ||
| Amount | $ 4,155 | $ 4,159 |
| Effective Rate | 1.08% | 0.97% |
| Other notes and borrowings | ||
| Short-term Debt [Line Items] | ||
| Amount | $ 0 | $ 1 |
| Effective Rate | 0.00% | 2.08% |