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Derivative Instruments and Hedging Activities - Effects on Statement of Income and Amounts Recognized In and Reclassified From AOCI (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 26, 2020 | Dec. 28, 2019
Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax | $ (4,583) | $ 1,176
Gain (Loss) Reclassified from AOCI (Effective Portion), Net of Tax | 5,091 | (486)
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Cost of Sales [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
(Loss) gain on commodity contracts (nonqualifying) | (8,893) | 2,443
Commodity Contract [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax | (4,579) | 1,161
Commodity Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified from AOCI (Effective Portion), Net of Tax | 5,091 | (486)
Other [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax | (4) | 15
Other [Member] | Cash Flow Hedging [Member] | Other [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified from AOCI (Effective Portion), Net of Tax | $ 0 | $ 0

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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- Definition Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e640-108580 + Details
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