Note 10 - Pension and Postretirement Benefits - Asset Allocation (Details)		Nov. 30, 2024	Dec. 02, 2023
Equity Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation		55.00%
Fixed Income Funds [Member]
Defined Benefit Plan, Target Plan Asset Allocation		45.00%
Fixed Income Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation		45.00%
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		55.00%
Percentage of Plan Assets at Year End		52.40%	53.80%
Pension Plan [Member] | Equity Funds [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation		21.70%
Percentage of Plan Assets at Year End		23.00%	22.00%
Pension Plan [Member] | Fixed Income Funds [Member] | UNITED STATES
Defined Benefit Plan, Target Plan Asset Allocation		45.00%
Percentage of Plan Assets at Year End		46.10%	44.90%
Pension Plan [Member] | Fixed Income Funds [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation		78.30%
Percentage of Plan Assets at Year End		76.50%	77.20%
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	[1]	0.00%
Percentage of Plan Assets at Year End	[1]	1.50%	1.30%
Pension Plan [Member] | Cash [Member] | Foreign Plan [Member]
Defined Benefit Plan, Target Plan Asset Allocation	[1]	0.00%
Percentage of Plan Assets at Year End	[1]	0.50%	0.80%
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		98.00%	99.50%
Other Postretirement Benefits Plan [Member] | Cash [Member]
Defined Benefit Plan, Target Plan Asset Allocation	[1]	0.00%
Percentage of Plan Assets at Year End	[1]	2.00%	0.50%

[1] Negative cash for 2021 represents unsettled pending trades within an investment that are classified in cash and cash equivalents until settled.