Other Comprehensive Income (Schedule of OCI) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Oct. 02, 2021	Sep. 26, 2020
Before-Tax Amount:
Amortization of prior service cost	$ 5			$ 9			$ 16	$ 25
Amortization of actuarial loss	1,052			854			3,157	2,562
Total defined benefit pension plans	1,057			863			3,173	2,587
Foreign currency translation	(33,689)			39,237			(50,866)	(5,798)
Other comprehensive income (loss)	(43,784)			40,902			(58,911)	(1,869)
Tax (Expense) or Benefit:
Amortization of prior service cost	(1)			(2)			(4)	(6)
Amortization of actuarial loss	(265)			(213)			(794)	(638)
Total defined benefit pension plans	(266)			(215)			(798)	(644)
Foreign currency translation	786			(1,383)			2,125	(1,445)
Other comprehensive income (loss)	4,123			(2,012)			4,867	(2,645)
Net-of-Tax Amount:
Amortization of prior service cost	4			7			12	19
Amortization of actuarial loss	787			641			2,363	1,924
Total defined benefit pension plans	791			648			2,375	1,943
Foreign currency translation	(32,903)	$ 22,384	$ (38,222)	37,854	$ 20,139	$ (65,236)	(48,741)	(7,243)
Total other comprehensive income/(loss), net of tax	(39,661)			38,890			(54,044)	(4,514)
Soybean Meal
Before-Tax Amount:
Loss (gain) reclassified to net income	(19)			0			(267)	0
Gain (loss) activity recognized in other comprehensive loss	(12)			0			(131)	0
Total swap derivatives	(31)			0			(398)	0
Tax (Expense) or Benefit:
Loss (gain) reclassified to net income	5			0			68	0
Gain (loss) activity recognized in other comprehensive loss	3			0			33	0
Total swap derivatives	8			0			101	0
Net-of-Tax Amount:
Loss (gain) reclassified to net income	(14)			0			(199)	0
Gain (loss) activity recognized in other comprehensive loss	(9)			0			(98)	0
Total swap derivatives	(23)	(17)	(257)	0			(297)	0
Corn Option
Before-Tax Amount:
Loss (gain) reclassified to net income	4,217			229			14,880	1,168
Gain (loss) activity recognized in other comprehensive loss	647			(3,588)			(11,566)	(1,939)
Total swap derivatives	4,864			(3,359)			3,314	(771)
Tax (Expense) or Benefit:
Loss (gain) reclassified to net income	(1,072)			(57)			(3,780)	(292)
Gain (loss) activity recognized in other comprehensive loss	(164)			898			2,938	485
Total swap derivatives	(1,236)			841			(842)	193
Net-of-Tax Amount:
Loss (gain) reclassified to net income	3,145			172			11,100	876
Gain (loss) activity recognized in other comprehensive loss	483			(2,690)			(8,628)	(1,454)
Total swap derivatives	3,628	(356)	(800)	(2,518)	1,804	136	2,472	(578)
Heating Oil Swaps And Options
Before-Tax Amount:
Gain (loss) activity recognized in other comprehensive loss	(8,699)			1,992			(7,149)	4,565
Total swap derivatives	(8,699)			1,992			(7,149)	4,565
Tax (Expense) or Benefit:
Gain (loss) activity recognized in other comprehensive loss	2,209			(498)			1,815	(1,141)
Total swap derivatives	2,209			(498)			1,815	(1,141)
Net-of-Tax Amount:
Gain (loss) activity recognized in other comprehensive loss	(6,490)			1,494			(5,334)	3,424
Total swap derivatives	(6,490)			1,494			(5,334)	3,424
Foreign Exchange Contract
Before-Tax Amount:
Loss (gain) reclassified to net income	(1,889)			(5,317)			(2,503)	(10,564)
Gain (loss) activity recognized in other comprehensive loss	(5,397)			7,486			(4,482)	8,112
Total swap derivatives	(7,286)			2,169			(6,985)	(2,452)
Tax (Expense) or Benefit:
Loss (gain) reclassified to net income	565			385			884	1,690
Gain (loss) activity recognized in other comprehensive loss	2,057			(1,142)			1,582	(1,298)
Total swap derivatives	2,622			(757)			2,466	392
Net-of-Tax Amount:
Loss (gain) reclassified to net income	(1,324)			(4,932)			(1,619)	(8,874)
Gain (loss) activity recognized in other comprehensive loss	(3,340)			6,344			(2,900)	6,814
Total swap derivatives	$ (4,664)	$ 6,951	$ (6,806)	$ 1,412	$ 5,679	$ (9,151)	$ (4,519)	$ (2,060)