Restructuring, Integration, and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges	$ 19,183	$ 24,416	$ 40,354	$ 39,921
Settlement Charge					$ (16,706)
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges	7,454	6,157	15,844	11,577
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	1,384	1,324	7,538	4,003
Restructuring Charge 2018 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges	8,798	14,263	20,230	22,246
Restructuring Charge 2018 Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges			10,496
Restructuring Charge 2018 Plan [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges			9,560
Restructuring Charge 2018 Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges			174
Restructuring Charge 2017 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			3,568
Restructuring Charge 2017 Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			1,308
Restructuring Charge 2017 Plan [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			2,267
Restructuring Charge 2017 Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			(7)
Restructuring Charges From Prior to 2017 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			712
Restructuring Charges From Prior to 2017 [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			(91)
Restructuring Charges From Prior to 2017 [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			818
Restructuring Charges From Prior to 2017 [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			(15)
Restructuring Charges From Prior Periods [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, integration, and other charges	$ 2,931	$ 3,996	$ 4,280	$ 6,098