Indebtedness (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Sep. 29, 2019
Debt Instrument [Line Items]
Class A-1 Variable Funding Notes	$ 107,876	$ 0
Finance lease obligations	2,934	3,594
Total debt	1,401,061	1,303,594
Less current maturities of long-term debt	(818)	(774)
Less unamortized debt issuance costs	(23,330)	(28,446)
Long-term debt	1,376,913	1,274,374
Senior Notes \| Class A-2-I Notes
Debt Instrument [Line Items]
Senior secured notes	570,688	575,000
Senior Notes \| Class A-2-II Notes
Debt Instrument [Line Items]
Senior secured notes	272,938	275,000
Senior Notes \| Class A-2-III Notes
Debt Instrument [Line Items]
Senior secured notes	$ 446,625	$ 450,000

Long-term Debt, Gross And Lease Obligation

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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