Note 11 - Pension and Postretirement Benefits - Fair Value of Plan Assets (Details) - USD ($) $ in Thousands		Nov. 30, 2019	Dec. 01, 2018	Dec. 02, 2017
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		$ 383,527	$ 346,460	$ 378,099
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		185,331	169,455	187,708
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		94,474	82,910	79,300
Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		162,182	156,201
Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		78,813	74,731
Fair Value, Inputs, Level 1 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		392	464
Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		220,740	189,639
Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		8,066	7,467
Fair Value, Inputs, Level 2 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		219	266
Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		675	662
Fair Value, Inputs, Level 3 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		94,082	82,446
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		383,141	346,106
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		87,554	82,860
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		94,474	82,910
Fair Value Measured at Net Asset Value Per Share [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	[1]	386	354
Fair Value Measured at Net Asset Value Per Share [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	[1]	97,777	86,595
Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		126,178	121,087
Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		32,045	30,123
Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		95,271	85,007
Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		1,247	1,073
Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Equity Funds [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		221,449	206,094
Equity Funds [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		33,292	31,196
Insurance [Member] | Fair Value, Inputs, Level 1 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Insurance [Member] | Fair Value, Inputs, Level 2 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Insurance [Member] | Fair Value, Inputs, Level 3 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		94,082	82,446	78,894
Insurance [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		94,082	82,446
Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		119,103	33,892
Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		46,262	44,158
Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		125,329	104,484
Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		6,819	6,394
Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		219	266	$ 291
Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		675	662
Fixed Income Funds [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		244,651	138,642
Fixed Income Funds [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		53,756	51,214
Cash [Member] | Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		(83,099)	1,222
Cash [Member] | Fair Value, Inputs, Level 1 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		506	450
Cash [Member] | Fair Value, Inputs, Level 1 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		392	464
Cash [Member] | Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		140	148
Cash [Member] | Fair Value, Inputs, Level 2 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Cash [Member] | Fair Value, Inputs, Level 2 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Cash [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Cash [Member] | Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Cash [Member] | Fair Value, Inputs, Level 3 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		0	0
Cash [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		(82,959)	1,370
Cash [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		506	450
Cash [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance		$ 392	$ 464

[1] In accordance with ASC Topic 820-10, Fair Value Measurement, certain investments that are measured at NAV (Net Asset Value per share) (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts represented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position.