Basis of Presentation (Basis of Presentation) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Apr. 04, 2021	Jul. 05, 2020	Jun. 30, 2019	Jul. 05, 2020	Jun. 30, 2019	Apr. 05, 2020	Dec. 30, 2019	Dec. 29, 2019	Mar. 31, 2019
Basis of Presentation [Line Items]
Defined Benefit Plan, Other Cost (Credit)		$ (1,600)	$ (1,500)	$ (3,300)	$ (2,900)
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents				$ (4,658)	$ 685
Entity's Operating Cycle				52
Operating Lease, Right-of-Use Asset		$ 195,222		$ 195,222				$ 167,276
Accounting Standards Update 2016-02 [Member]
Basis of Presentation [Line Items]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption									$ 13,289
Accounting Standards Update 2016-13 [Member]
Basis of Presentation [Line Items]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption						$ (1,328)	$ 1,300
Impact of New Accounting Principles, Deferred Tax Assets							400
Impact of New Accounting Principles, Reserve for Doubtful Accounts							$ (1,700)
Forecast [Member]
Basis of Presentation [Line Items]
Entity's Operating Cycle	53