Other Comprehensive Earnings (Loss), Tax Effects on Changes in Other Comprehensive Earnings (loss) (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2017	Mar. 27, 2016
Other Comprehensive Earnings (Loss) [Abstract]
Tax benefit (expense) on cash flow hedging activities	$ 5,310	$ 3,256
Tax benefit (expense) on unrealized holding gains	18	(953)
Reclassification Adjustment from AOCE, Tax expense (benefit) on cash flow hedging activities	(369)	1,749
Reclassification Adjustment from AOCE, Tax expense (benefit) on amortization of unrecognized pension and postretirement amounts	(822)	(667)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent, Total	4,137	$ 3,385
Cash Flow Hedge gains to be Reclassified within Twelve Months	$ 5,555

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580

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Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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