Description Of Business and Basis Of Presentation (Policies)	9 Months Ended
	Jun. 26, 2020	Jun. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Lessee, Leases [Policy Text Block]		The Company determines if an arrangement is a lease at its inception. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The Company uses its estimated incremental borrowing rate in determining the present value of lease payments considering the term of the lease, which is derived from information available at the lease commencement date. The lease term includes renewal options when it is reasonably certain that the option will be exercised and excludes termination options. To the extent that the Company’s agreements have variable lease payments, the Company includes variable lease payments that depend on an index or a rate and excludes those that depend on facts or circumstances occurring after the commencement date, other than the passage of time. Lease expense for these leases is recognized on a straight-line basis over the lease term. The Company has elected not to recognize ROU assets and lease liabilities that arise from short-term (12 months or less) leases for any class of underlying asset. Operating leases are included in operating lease ROU assets, other current liabilities, and long-term operating lease liabilities in the Company's condensed consolidated balance sheet. The Company’s lease arrangements consist primarily of corporate, manufacturing and other facility agreements as well as various machinery and office equipment agreements. The leases expire at various dates through 2033, some of which include options to extend the lease term. The options with the longest potential total lease term consist of options for extension of up to three five-year periods following expiration of the original lease term.
Fiscal Period	The Company’s fiscal year ends on the Friday closest to September 30. Fiscal 2020 consists of 53 weeks and ends on October 2, 2020. Fiscal 2019 consisted of 52 weeks and ended on September 27, 2019. The third quarters of fiscal 2020 and 2019 each consisted of 13 weeks and ended on June 26, 2020, and June 28, 2019, respectively.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842) (“ASU 2016-02”). This ASU requires lessees to reflect leases with a term greater than one year on their balance sheet as assets and obligations. The Company adopted the standard in the first quarter of fiscal 2020, using the modified retrospective approach, whereby the Company was not required to adjust comparative period financial statements for the new standard. Upon adoption, the Company recorded a right-of-use asset of $141.4 million and a lease liability of $143.1 million. This standard did not have a material impact on the Consolidated Statement of Operations or Consolidated Statement of Cash Flows. Upon adoption, the Company elected the package of three practical expedients that permits the Company to maintain its historical conclusions about lease identification, lease classification and initial direct costs for leases that exist at the date of adoption. Further, the Company elected the practical expedient to not separate lease and non-lease components.