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Acquisitions and Dispositions (Details) - USD ($) $ in Thousands	1 Months Ended				3 Months Ended		9 Months Ended
	Oct. 31, 2018	Sep. 30, 2018	May 31, 2018	Jan. 31, 2018	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 30, 2017
Subsequent Event [Line Items]
Gain (Loss) on disposal		$ 3,000
Acquisitions, net of cash acquired			$ 51,300				$ 51,301	$ 12,144
Property, Plant, and Equipment			15,200
Finite-Lived Intangibles			15,900
Goodwill			19,600		$ 1,233,545		1,233,545		$ 1,301,093
Other assets			$ 600
Weighted average useful life			15 years
Proceeds from sale of investment in subsidiary			$ 80,000				82,805	0
Loss on disposal of subsidiaries			$ 15,500		$ (3,038)	$ 0	$ 12,500	$ 0
Proceeds from Divestiture of Businesses				$ 2,800
Subsequent Event
Subsequent Event [Line Items]
Consideration transferred	$ 50,000