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.

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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) $ in Thousands	3 Months Ended		6 Months Ended
Net Investment Hedge (Details) $ in Thousands	Jun. 28, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 28, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 28, 2020 EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ (44,671)	$ (16,904)	$ (22,881)	$ 11,887
Senior Subordinated Debt, Dedesignated			532,200
Senior Subordinated Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Senior Subordinated Debt, Hedged \| €					€ 767.8
Cumulative translation adjustment			$ 18,200	$ 6,900