Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Name:	us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Net Investment Hedge (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Net Investment Hedge (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign currency translation adjustment	$ (17,904)	$ (19,535)	$ 10,943	$ (46,478)
Senior Subordinate Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign currency translation adjustment			$ 46,300
Senior Subordinate Notes \| 4.125% Senior subordinated notes due 2026
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign currency translation adjustment				$ 25,300