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/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Net Investment Hedge (Details) $ in Thousands, € in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2020 USD ($)	Sep. 29, 2019 USD ($)	Sep. 27, 2020 USD ($)	Sep. 29, 2019 USD ($)	Sep. 27, 2020 EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ (52,910)	$ 33,732	$ (75,791)	$ 45,619
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			$ (13,100)	$ 62,100