Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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The indenture governing the 2020 Senior Notes, requires the Partnership's consolidated fixed charge coverage ratio, as defined, to exceed a minimum ratio to permit the Partnership to make cash distributions equal to available cash, as defined, as of the end of the immediately preceding quarter, if no event of default exists or would exist upon making such distributions.

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The premium or discount, stated as a percentage of the principal amount, at which a debt instrument was issued.

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The percentage of the principal amount of the debt instrument required to be offered to repurchase the debt instrument under a change of control provision.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fixed interest rate related to the interest rate derivative.

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Date the entity entered into the derivative contract, in CCYY-MM-DD format.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Long-Term Borrowings - Additional Information (Details)		3 Months Ended					6 Months Ended
Long-Term Borrowings - Additional Information (Details)	Mar. 03, 2016 USD ($)	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018 USD ($)	Dec. 30, 2017	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)
Debt Instrument [Line Items]
Long-term borrowings					$ 1,284,574,000		$ 1,284,574,000	$ 1,272,164,000
Margin over basis rate (in hundredths)							1.00%
Notional Amount					100,000,000		$ 100,000,000
Consolidated fixed charge coverage ratio, minimum							1.75
Long-term debt maturities, 2018					0		$ 0
Long-term debt maturities, 2019					0		0
Long-term debt maturities, 2020					0		0
Long-term debt maturities, 2021					174,045,000		174,045,000
Long-term debt maturities, 2022					0		0
Long-term debt maturities, 2022 and thereafter					$ 1,125,000,000		$ 1,125,000,000
Amended Credit Agreement Due 2021 [Member]
Debt Instrument [Line Items]
Consolidated interest coverage ratio, minimum					2.5
Total consolidated leverage ratio, maximum					5.95	5.95
Senior secured unconsolidated leverage ratio maximum					3.0
Weighted average interest rate (in hundredths)					4.20%		4.20%
Amended Credit Agreement Due 2021 [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Description of applicable interest rate on borrowings							Federal Funds Rate
Margin over basis rate (in hundredths)							0.50%
Amended Credit Agreement Due 2021 [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Description of applicable interest rate on borrowings							LIBOR
Margin over basis rate (in hundredths)							1.00%
Amended Credit Agreement Due 2021 [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Total consolidated leverage ratio, maximum		5.5	5.75	5.95
Amended Credit Agreement Due 2017 [Member]
Debt Instrument [Line Items]
Effective date							Jun. 25, 2013
Termination date							Jan. 05, 2017
Fixed interest rate (in hundredths)					1.63%		1.63%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date							Mar. 03, 2021
Long-term borrowings					$ 174,045,000		$ 174,045,000	$ 162,645,000
Standby letters of credit issued under the Revolving Credit Facility					$ 45,626,000		$ 45,626,000
Revolving Credit Facility [Member] \| Amended Credit Agreement Due 2021 [Member]
Debt Instrument [Line Items]
Credit Facility, maximum amount	$ 500,000,000
Revolving credit facility, term	5 years
5.5% Senior Notes due June 1, 2024 [Member]
Debt Instrument [Line Items]
Stated interest rate (in hundredths)					5.50%		5.50%	5.50%
Maturity date							Jun. 01, 2024
Date public offering completed							May 27, 2014
Aggregate principal amount					$ 525,000,000		$ 525,000,000
Percentage of principal amount at which debt was issued (in hundredths)					100.00%		100.00%
Percentage of the principal amount repurchase offer under change of control provision (in hundredths)					101.00%		101.00%
Repurchase of debt due to decline in rating after consummation of change of control, period							90 days
7.5% Senior Notes due October 1, 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate (in hundredths)					7.50%		7.50%
5.75% Senior Notes due March 1, 2025 [Member]
Debt Instrument [Line Items]
Stated interest rate (in hundredths)					5.75%		5.75%	5.75%
Maturity date							Mar. 01, 2025
Date public offering completed							Feb. 25, 2015
Aggregate principal amount					$ 250,000,000		$ 250,000,000
Percentage of principal amount at which debt was issued (in hundredths)					100.00%		100.00%
Percentage of the principal amount repurchase offer under change of control provision (in hundredths)					101.00%		101.00%
Repurchase of debt due to decline in rating after consummation of change of control, period							90 days
7.375% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate (in hundredths)					7.375%		7.375%
5.875% Senior Notes due March 1, 2027 [Member]
Debt Instrument [Line Items]
Stated interest rate (in hundredths)					5.875%		5.875%	5.875%
Maturity date							Mar. 01, 2027
Date public offering completed							Feb. 14, 2017
Aggregate principal amount					$ 350,000,000		$ 350,000,000
Percentage of principal amount at which debt was issued (in hundredths)					100.00%		100.00%
Percentage of the principal amount repurchase offer under change of control provision (in hundredths)					101.00%		101.00%
Repurchase of debt due to decline in rating after consummation of change of control, period							90 days
7.375% Senior Notes due August 1, 2021 [Member]
Debt Instrument [Line Items]
Stated interest rate (in hundredths)					7.375%		7.375%