Summary of Significant Accounting Policies Recently Adopted Accounting Pronouncements (Details) - USD ($) $ in Thousands	Oct. 02, 2020	Sep. 27, 2019
New Accounting Pronouncement, Early Adoption [Line Items]
Operating Lease, Right-of-Use Asset	$ 167,900	$ 0
Operating Lease, Liability	178,900
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
Operating Lease, Right-of-Use Asset	141,400
Operating Lease, Liability	$ 143,100