Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

DERIVATIVE FINANCIAL INSTRUMENTS (Schedule of Outstanding Derivative Instruments and Cash Collateral) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 28, 2021	Jun. 28, 2020	Dec. 27, 2020
Fair values:
Cash collateral posted with brokers	$ 43,169		$ 782
Corn
Derivatives Coverage:
Derivatives coverage (as a percentage)	13.80%	16.00%
Soybean meal
Derivatives Coverage:
Derivatives coverage (as a percentage)	21.00%	24.00%
Commodity
Fair values:
Derivative assets, gross	$ 6,074		24,059
Derivative liabilities, gross	(13,863)		(6,531)
Foreign currency
Fair values:
Derivative assets, gross	2,410		2,204
Derivative liabilities, gross	(7,180)		(428)
Interest rate swap instrument
Fair values:
Derivative liabilities, gross	(538)		(640)
Sales contract instruments
Fair values:
Derivative liabilities, gross	$ (18,104)		$ 0