Note 10 - Pension and Postretirement Benefits - Weighted-average Assumption Used to Determine Benefit Obligations and Net Costs (Details)		12 Months Ended
		Nov. 29, 2025	Nov. 30, 2024	Dec. 02, 2023
UNITED STATES
Discount rate		5.15%	5.23%	5.66%
Expected return on plan assets		7.50%	7.75%	7.75%
Foreign Plan [Member]
Expected return on plan assets		5.03%	5.01%	5.02%
Pension Plan [Member] | UNITED STATES
Discount rate		5.15%	5.23%	5.66%
Rate of compensation increase	[1]	0.00%	0.00%	0.00%
Discount rate		5.23%	5.66%	5.36%
Expected return on plan assets		7.50%	7.75%	7.75%
Rate of compensation increase	[1]	0.00%	0.00%	0.00%
Pension Plan [Member] | Foreign Plan [Member]
Discount rate		4.60%	4.03%	4.37%
Rate of compensation increase	[1]	1.73%	1.76%	1.82%
Discount rate		4.05%	4.36%	3.71%
Expected return on plan assets		5.03%	5.01%	5.02%
Rate of compensation increase	[1]	1.73%	1.86%	1.82%
Other Postretirement Benefits Plan [Member]
Discount rate		4.85%	5.09%	5.61%
Discount rate		5.09%	5.61%	5.29%
Expected return on plan assets		8.00%	8.25%	8.25%

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