Interim Statement Presentation Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 29, 2019	Jun. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Interest Paid, Capitalized, Investing Activities	$ 8,164	$ 5,874
Interest Paid, Including Capitalized Interest, Operating and Investing Activities	8,907	8,333
Income Taxes Paid, Net	$ 47,877	$ (86,825)

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 50
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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

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Amount of cash paid for interest capitalized, classified as investing activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

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- References

No definition available.

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