Restructuring Activities - Restructuring Plan Reserve Recorded in Accrued Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 0	$ 23,639	$ 0	$ 28,498
Restructuring expense	41,949	10,423	41,949	24,053
Utilized – cash	0	(17,910)	0	(28,052)
Utilized – non cash	(2,358)	(6,282)	(2,358)	(14,661)
Foreign currency changes	(23)	(42)	(23)	(10)
Balance, end of period	39,568	9,828	39,568	9,828
Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period		22,588		25,037
Restructuring expense		10,424		24,448
Utilized – cash		(17,028)		(25,156)
Utilized – non cash		(6,282)		(14,661)
Foreign currency changes		(18)		16
Balance, end of period		9,684		9,684
2020 Restructuring Activities
Restructuring Reserve [Roll Forward]
Restructuring expense	41,900		41,900
Utilized – cash			(94,000)
Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0		0
Restructuring expense	25,321		25,321
Utilized – cash	0		0
Utilized – non cash	0		0
Foreign currency changes	(23)		(23)
Balance, end of period	25,298		25,298
Employee Termination Benefits | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period		22,401		24,958
Restructuring expense		8		17
Utilized – cash		(12,734)		(15,334)
Utilized – non cash		0		0
Foreign currency changes		(14)		20
Balance, end of period		9,661		9,661
Employee Termination Benefits | Reorganization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period		1,051		3,461
Restructuring expense		(1)		(395)
Utilized – cash		(882)		(2,896)
Utilized – non cash		0		0
Foreign currency changes		(24)		(26)
Balance, end of period		144		144
Employee Termination Benefits | 2020 Restructuring Activities
Restructuring Reserve [Roll Forward]
Utilized – cash			(30,000)
Contract Termination
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0		0
Restructuring expense	14,270		14,270
Utilized – cash	0		0
Utilized – non cash	0		0
Foreign currency changes	0		0
Balance, end of period	14,270		14,270
Contract Termination | 2020 Restructuring Activities
Restructuring Reserve [Roll Forward]
Utilized – cash			(38,000)
Non-Current Asset Adjustments
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0		0
Restructuring expense	2,358		2,358
Utilized – cash	0		0
Utilized – non cash	(2,358)		(2,358)
Foreign currency changes	0		0
Balance, end of period	$ 0		0
Non-Current Asset Adjustments | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period		0		0
Restructuring expense		5,586		13,965
Utilized – cash		0		0
Utilized – non cash		(5,586)		(13,965)
Foreign currency changes		0		0
Balance, end of period		0		0
Non-Current Asset Adjustments | 2020 Restructuring Activities
Restructuring Reserve [Roll Forward]
Utilized – cash			$ (26,000)
Other Costs | Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period		187		79
Restructuring expense		4,830		10,466
Utilized – cash		(4,294)		(9,822)
Utilized – non cash		(696)		(696)
Foreign currency changes		(4)		(4)
Balance, end of period		$ 23		$ 23