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Long Term Borrowings (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended |
--- | --- | ---
Jun. 23, 2012 | Sep. 24, 2011
Debt Instrument [Line Items] |  |
Long-term borrowings | $ 348,331 | $ 348,169
Interest rate swap agreement [Abstract] |  |
Notional amount | 100,000 |
Effective date | Mar. 31, 2010 |
Termination date | Jun. 25, 2013 |
Fixed interest rate (in hundredths) | 3.12% |
Credit Agreement and 2020 Senior Notes covenants [Abstract] |  |
Total consolidated interest coverage ratio, minimum | 2.5 to 1.0 |
Total consolidated leverage ratio, maximum | 4.75 to 1.0 |
Senior secured consolidated leverage ratio, maximum | 3.0 to 1.0 |
Consolidated fixed charge coverage ratio, minimum | 1.75 to 1 |
Debt Origination Costs [Abstract] |  |
Loss on the extinguishment of debt related to write-off in unamortized debt origination costs and unamortized discount | 507 |
Capitalized debt origination costs | 9,747 | 7,207
Long-term debt maturities [Abstract] |  |
Long-term debt maturities, 2012 | 0 |
Long-term debt maturities, 2013 | 0 |
Long-term debt maturities, 2014 | 0 |
Long-term debt maturities, 2015 | 0 |
Long-term debt maturities, 2016 | 0 |
Long-term debt maturities thereafter | 350,000 |
Acquisition of Inergy Propane LLC [Member] |  |
Debt Origination Costs [Abstract] |  |
Capitalized debt origination costs | 1,772 |
Revolving credit facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-term borrowings | 100,000 | 100,000
Standby letters of credit issued under the Revolving Credit Facility | 46,926 | 100,000
Available borrowing capacity under Revolving Credit Facility | 103,074 |
Interest rate swap agreement [Abstract] |  |
Revolving Credit Facility, interest rate description | Borrowings under the Revolving Credit Facility bear interest at prevailing interest rates based upon, at the Operating Partnership's option, LIBOR plus the applicable margin or the base rate, defined as the higher of the Federal Funds Rate plus .5 of 1%, the agent bank's prime rate, or LIBOR plus 1%, plus in each case the applicable margin. The applicable margin is dependent upon the Partnership's ratio of total debt to EBITDA on a consolidated basis, as defined in the Revolving Credit Facility. |
Revolving Credit Facility, approximate interest rate at period end (in hundredths) | 2.70% |
Senior notes due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Long-term borrowings | 248,331 | 248,169
Aggregate principal amount | 250,000 |
Stated interest rate (in hundredths) | 7.375% |
Percentage of principal amount at which debt was issued (in hundredths) | 99.136% |
Maturity date | Mar. 15, 2020 |
Percentage of the principal amount repurchase offer under change of control provision (in hundredths) | 101.00% |
Number of days after the consummation of the change of control that a rating decline may occur to trigger offer to repurchase debt | 90 days |
Unamortized discount | 1,669 | 1,831
Amended Credit Agreement Due 2017 [Member] |  |
Debt Instrument [Line Items] |  |
Date public offering completed | 2012-01-05 |
Revolving Credit Facility, term | 5 years |
Revolving Credit Facility, maximum amount | 250,000 |
Standby letters of credit issued under the Revolving Credit Facility | 100,000 | 100,000
Outstanding standby letters of credit, maximum expiration date of outstanding | Jan. 05, 2017 |
Interest rate swap agreement [Abstract] |  |
Effective date | Jun. 25, 2013 |
Termination date | Jan. 05, 2017 |
Fixed interest rate (in hundredths) | 1.63% |
Debt Origination Costs [Abstract] |  |
Capitalized debt origination costs | $ 2,420 |

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- Definition 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. + References No definition available. + Details
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