Employee Benefit Plans - Assumptions used (Detail) |
12 Months Ended | ||
|---|---|---|---|
Nov. 27, 2016 |
Nov. 29, 2015 |
Nov. 30, 2014 |
|
| Pension Benefits [Member] | |||
| Weighted-average assumptions used to determine net periodic benefit cost: | |||
| Discount rate | 4.00% | 3.80% | 4.60% |
| Expected long-term rate of return on plan assets | 5.90% | 5.90% | 6.30% |
| Rate of compensation increase | 3.40% | 3.40% | 3.70% |
| Weighted-average assumptions used to determine benefit obligations: | |||
| Discount rate | 3.80% | 4.00% | 3.80% |
| Rate of compensation increase | 3.40% | 3.40% | 3.40% |
| Postretirement Benefits [Member] | |||
| Weighted-average assumptions used to determine net periodic benefit cost: | |||
| Discount rate | 3.80% | 3.60% | 4.20% |
| Weighted-average assumptions used to determine benefit obligations: | |||
| Discount rate | 3.70% | 3.80% | 3.60% |
| Assumed health care cost trend rates were as follows: | |||
| Health care trend rate assumed for next year | 6.40% | 6.40% | 7.00% |
| Rate trend to which the cost trend is assumed to decline | 4.40% | 4.40% | 4.50% |
| Year that rate reaches the ultimate trend rate | 2038 | 2038 | 2028 |