Other Comprehensive Earnings (Loss), Tax Effects on Changes in Other Comprehensive Earnings (loss) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018
Other Comprehensive Earnings (Loss) [Abstract]
Tax (expense) benefit on unrealized holding (gains) losses	$ (77)	$ 41
Tax (expense) benefit on cash flow hedging activities	(3)	5,980
Tax benefit on changes in unrecognized pension and postretirement amounts	0	7,565
Reclassification Adjustment from AOCE, Tax expense (benefit) on cash flow hedging activities	346	(794)
Reclassification Adjustment from AOCE, Tax benefit on amortization of unrecognized pension and postretirement amounts	(331)	(528)
Other Comprehensive Income (Loss), Tax, Total	(65)	$ 12,264
Cash Flow Hedge losses to be Reclassified within Twelve Months	$ 16,761

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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No definition available.

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Amount of tax expense (benefit) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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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
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-Topic 220
-SubTopic 10
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Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan.

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

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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