Shareholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 28, 2019	Sep. 29, 2018	Mar. 31, 2018	Sep. 28, 2019	Sep. 29, 2018
Changes In Components Of OCI [Line Items]
Foreign Currency Translation Adjustment and Other		$ (82,809)	$ (38,008)		$ (62,346)	$ (139,846)
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net		11,389	0		15,495	0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net		(9,114)	234		(15,480)	693
Employee Benefit Plan Items, Net		45	389		449	1,284
Retained earnings adjustment				$ 0
Net change in Accumulated other comprehensive income (loss)		(79,077)	(37,242)		(60,337)	(158,168)
Other comprehensive income before reclassifications [Member]
Changes In Components Of OCI [Line Items]
Foreign Currency Translation Adjustment and Other	[1]	(97,605)	(37,858)		(76,769)	(137,661)
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net		13,249	0		20,065	0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net		(9,360)	0		(16,209)	0
Other comprehensive income before reclassifications [Member] | Intra-entity foreign currency transactions [Member]
Changes In Components Of OCI [Line Items]
Foreign Currency Translation Adjustment and Other		(7,251)	508		(8,032)	3,358
Reclassification out of Accumulated Other Comprehensive Income [Member]
Changes In Components Of OCI [Line Items]
Foreign Currency Translation Adjustment and Other		16,208	(7)		15,968	(130)
Unrealized Gain (Loss) on Foreign Exchange Contracts Designated as Net Investment Hedges, Net		(1,860)	0		(4,570)	0
Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net		246	234		729	693
Employee Benefit Plan Items, Net		45	389		449	1,284
Cumulative impact of newly adopted accounting standard updates [Member]
Changes In Components Of OCI [Line Items]
Retained earnings adjustment	[2]	$ 0	$ 0		$ 0	$ (22,354)

[1] Includes intra-entity foreign currency transactions that are of a long-term investment nature of $(7,251) and $(8,032) for the third quarter and first nine months of 2019 and $508 and $3,358 for the third quarter and first nine months of 2018, respectively.

[2] Amounts relate to unrealized gains and losses on investments and stranded tax effects reclassified from “Accumulated other comprehensive loss” to “Retained earnings” in accordance with ASU No. 2018-02 and ASU No. 2016-01.