Restructuring Expenses - Restructuring Plan Reserve Recorded in Accrued Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Restructuring Reserve [Roll Forward]
Restructuring expense (benefit)	$ 10,423	$ 12,370	$ 24,053	$ 59,212
Manufacturing Optimization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period	22,588	38,350	25,037	0
Restructuring expense (benefit)	10,424	12,370	24,448	59,212
Utilized - cash	(17,028)	(3,926)	(25,156)	(6,600)
Utilized - non cash	(6,282)	(9,746)	(14,661)	(15,359)
Foreign currency changes	(18)	(213)	16	(418)
Balance, end of period	9,684	36,835	9,684	36,835
Manufacturing Optimization Plan | Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of period	22,401	38,287	24,958	0
Restructuring expense (benefit)	8	(1,186)	17	39,605
Utilized - cash	(12,734)	(133)	(15,334)	(2,433)
Utilized - non cash	0	0	0	0
Foreign currency changes	(14)	(210)	20	(414)
Balance, end of period	9,661	36,758	9,661	36,758
Manufacturing Optimization Plan | Accelerated Depreciation
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0	0	0	0
Restructuring expense (benefit)	5,586	9,746	13,965	15,359
Utilized - cash	0	0	0	0
Utilized - non cash	(5,586)	(9,746)	(13,965)	(15,359)
Foreign currency changes	0	0	0	0
Balance, end of period	0	0	0	0
Manufacturing Optimization Plan | Other
Restructuring Reserve [Roll Forward]
Balance, beginning of period	187	63	79	0
Restructuring expense (benefit)	4,830	3,810	10,466	4,248
Utilized - cash	(4,294)	(3,793)	(9,822)	(4,167)
Utilized - non cash	(696)	0	(696)	0
Foreign currency changes	(4)	(3)	(4)	(4)
Balance, end of period	23	77	23	77
Reorganization Plan
Restructuring Reserve [Roll Forward]
Balance, beginning of period	23,639	38,350	28,498	0
Restructuring expense (benefit)	10,423	12,370	24,053	59,212
Utilized - cash	(17,910)	(3,926)	(28,052)	(6,600)
Utilized - non cash	(6,282)	(9,746)	(14,661)	(15,359)
Foreign currency changes	(42)	(213)	(10)	(418)
Balance, end of period	9,828	36,835	9,828	36,835
Reorganization Plan | Employee Termination Benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of period	1,051	0	3,461	0
Restructuring expense (benefit)	(1)	0	(395)	0
Utilized - cash	(882)	0	(2,896)	0
Utilized - non cash	0	0	0	0
Foreign currency changes	(24)	0	(26)	0
Balance, end of period	$ 144	$ 0	$ 144	$ 0