Note 10 - Pension and Postretirement Benefits - Weighted-average Assumption Used to Determine Benefit Obligations and Net Costs (Details)		12 Months Ended
		Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
UNITED STATES
Discount rate		2.76%	2.53%	3.19%
Expected return on plan assets		7.25%	7.50%	7.50%
Foreign Plan [Member]
Expected return on plan assets		6.15%	6.23%	6.21%
Pension Plan [Member] | UNITED STATES
Discount rate		2.75%	2.50%	3.17%
Rate of compensation increase	[1]	0.00%	4.50%	4.50%
Discount rate		2.50%	3.17%	4.50%
Expected return on plan assets		7.24%	7.49%	7.49%
Rate of compensation increase	[1]	0.00%	4.50%	4.50%
Pension Plan [Member] | Foreign Plan [Member]
Discount rate		1.27%	1.16%	1.35%
Rate of compensation increase	[1]	1.48%	1.74%	1.71%
Discount rate		1.19%	1.34%	2.30%
Expected return on plan assets		6.15%	6.23%	6.21%
Rate of compensation increase	[1]	1.67%	1.74%	1.71%
Other Postretirement Benefits Plan [Member]
Discount rate		2.51%	2.19%	3.00%
Discount rate		2.19%	3.00%	4.37%
Expected return on plan assets		8.25%	8.50%	8.50%

[1] Under the U.S. Pension Plan compensation was locked-in as of May 31, 2011 and the benefit no longer includes compensation increases. The 4.50 percent rate for 2020 and 2019 is for the supplemental executive retirement plan only and for 2021, there is no rate of compensation increase as subsequent to November 27, 2021, there were no active employees in the supplemental executive retirement plan and therefore will be no compensation increase going forward.