Pension and Other Postretirement Plans (Actual Plan Asset Allocations) (Details) - Pension Plan [Member] |
Dec. 03, 2016 |
Nov. 28, 2015 |
|---|---|---|
| Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ||
| Actual plan asset allocations | 100.00% | 100.00% |
| Equity Securities [Member] | ||
| Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ||
| Actual plan asset allocations | 41.70% | 40.30% |
| Debt Securities [Member] | ||
| Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ||
| Actual plan asset allocations | 57.90% | 59.20% |
| Cash and equivalents [Member] | ||
| Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ||
| Actual plan asset allocations | 0.40% | 0.50% |