Note 10 - Pension and Postretirement Benefits - Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
UNITED STATES
Settlement payments		$ (6,673)	$ (10,939)
Pension Plan [Member] | UNITED STATES
Benefit obligation at beginning of year		388,530	380,388
Service cost		0	0	$ 4
Interest cost		9,299	11,738	14,691
Participant contributions		0	0
Actuarial (gain)/loss	[1]	(9,177)	27,377
Other		0	0
Curtailments		0	0
Settlement payments		(6,673)	(10,939)
Benefits paid		(20,767)	(20,034)
Foreign currency translation effect		0	0
Benefit obligation at end of year		361,212	388,530	380,388
Level 3 balance		398,403	383,527
Actual return on plan assets		37,466	44,365
Employer contributions		1,382	1,677
Participant contributions		0	0
Other		0	0
Settlement payments		(6,673)	(10,939)
Benefits paid	[2]	(20,767)	(20,227)
Foreign currency translation effect		0	0
Level 3 balance		409,811	398,403	383,527
Plan assets in excess of (less than) benefit obligation as of year end		48,599	9,873
Pension Plan [Member] | Foreign Plan [Member]
Benefit obligation at beginning of year		250,561	234,542
Service cost		3,280	2,950	2,237
Interest cost		2,941	3,158	4,678
Participant contributions		0	0
Actuarial (gain)/loss	[1]	(3,630)	4,350
Other		0	0
Curtailments		0	14
Settlement payments		996	(273)
Benefits paid		(8,578)	(8,628)
Foreign currency translation effect		(7,170)	14,448
Benefit obligation at end of year		238,400	250,561	234,542
Level 3 balance		202,242	185,331
Actual return on plan assets		25,204	13,155
Employer contributions		1,989	2,177
Participant contributions		0	0
Other		996	0
Settlement payments		0	0
Benefits paid	[2]	(8,578)	(8,628)
Foreign currency translation effect		(5,230)	10,207
Level 3 balance		216,623	202,242	185,331
Plan assets in excess of (less than) benefit obligation as of year end		(21,776)	(48,688)
Other Postretirement Benefits Plan [Member]
Benefit obligation at beginning of year		39,075	39,256
Service cost		21	73	98
Interest cost		822	1,135	1,550
Participant contributions		365	226
Actuarial (gain)/loss	[1]	(6,115)	1,327
Other		0	0
Curtailments		0	0
Settlement payments		0	0
Benefits paid		(2,906)	(2,942)
Foreign currency translation effect		0	0
Benefit obligation at end of year		31,262	39,075	39,256
Level 3 balance		109,056	94,474
Actual return on plan assets		28,716	15,673
Employer contributions		470	1,625
Participant contributions		365	226
Other		0	0
Settlement payments		0	0
Benefits paid	[2]	(2,906)	(2,942)
Foreign currency translation effect		0	0
Level 3 balance		135,701	109,056	$ 94,474
Plan assets in excess of (less than) benefit obligation as of year end		$ 104,439	$ 69,981

[1] Actuarial loss in 2021 and actuarial loss in 2020 for the U.S. Plans is primarily due to assumption changes. Actuarial loss in 2021 and actuarial loss in 2020 for the Non-U.S. Plans are due to both assumption changes and plan experience.

[2] Amount excludes benefit payments made from sources other than plan assets.