Acquisitions (Details) - USD ($) $ in Thousands	1 Months Ended					12 Months Ended
	Jan. 31, 2020	Oct. 31, 2018	Sep. 29, 2018	May 31, 2018	Jan. 31, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Oct. 05, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 50,400		$ 51,300		$ 1,431	$ 107,727	$ 12,144
Goodwill				19,600		1,223,291	1,229,159	1,301,093	$ 8,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets				$ 600					9,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		15 years		15 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				$ 15,200					11,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				15,900					$ 21,800
Gain (Loss) on Sale of Other Investments			$ 3,000
Proceeds from sale of investment in subsidiary				80,000		3,671	82,760	0
Gain (Loss) on Disposition of Business				$ 15,600		2,967	(12,545)	$ (885)
Acquisition Of Noncontrolling Interest						$ 19,100
Proceeds from Divestiture of Businesses					$ 2,800
Assets Held-for-sale, Not Part of Disposal Group							37,800
Liabilities for sale							19,200
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down							$ 900
Subsequent Event [Member]
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage	50.00%
Acquisition Of Noncontrolling Interest	$ 12,200
Ownership Percentage	100.00%