Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Mar. 29, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Deferred financing costs	$ (7,382)	$ (8,194)
Other	205	279
Total debt	884,095	904,247
Less: Current portion	0	26,561
Long-term debt	884,095	877,686
Secured Debt \| First Lien Term Loan Facility due December 22, 2023
Debt Instrument [Line Items]
First Lien Term Loan Facility due December 22, 2023	$ 891,272	$ 912,162

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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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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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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