Note 10 - Pension and Postretirement Benefits - Asset Allocation (Details)	Dec. 01, 2018	Dec. 02, 2017
Equity Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	60.00%
Fixed Income Funds [Member]
Defined Benefit Plan, Target Plan Asset Allocation	40.00%
Fixed Income Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	40.00%
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	100.00%
Percentage of Plan Assets at Year End	100.00%	100.00%
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	100.00%
Percentage of Plan Assets at Year End	100.00%	100.00%
Pension Plan [Member] | Equity Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	60.00%
Percentage of Plan Assets at Year End	59.50%	63.30%
Pension Plan [Member] | Equity Funds [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	49.00%
Percentage of Plan Assets at Year End	50.80%	51.50%
Pension Plan [Member] | Fixed Income Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	40.00%
Percentage of Plan Assets at Year End	40.00%	37.60%
Pension Plan [Member] | Fixed Income Funds [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	51.00%
Percentage of Plan Assets at Year End	48.70%	47.90%
Pension Plan [Member] | Insurance [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.00%	0.00%
Pension Plan [Member] | Insurance [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.00%	0.00%
Pension Plan [Member] | Cash [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.50%	(0.90%)
Pension Plan [Member] | Cash [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.50%	0.60%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	100.00%
Percentage of Plan Assets at Year End	100.00%	100.00%
Other Postretirement Benefits Plan [Member] | Equity Funds [Member]
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.00%	0.00%
Other Postretirement Benefits Plan [Member] | Fixed Income Funds [Member]
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.00%	0.00%
Other Postretirement Benefits Plan [Member] | Insurance [Member]
Defined Benefit Plan, Target Plan Asset Allocation	100.00%
Percentage of Plan Assets at Year End	99.40%	99.50%
Other Postretirement Benefits Plan [Member] | Cash [Member]
Defined Benefit Plan, Target Plan Asset Allocation	0.00%
Percentage of Plan Assets at Year End	0.60%	0.50%