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DERIVATIVE FINANCIAL INSTRUMENTS (Details Textuals) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2014
|
Jun. 30, 2012
|
Dec. 22, 1997
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Sep. 30, 2014
Variable Interest Rate Swaps $125M
|
Oct. 31, 2011
Variable Interest Rate Swaps $125M
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Sep. 30, 2014
Fixed Interest Rate Swaps $125M
|
Sep. 30, 2014
Interest Rate Swaps Designated As Fair Value Hedges
|
Dec. 31, 2013
Interest Rate Swaps Designated As Fair Value Hedges
|
Sep. 30, 2013
Interest Rate Swaps Designated As Fair Value Hedges
|
|
| Derivative [Line Items] | |||||||||
| Notional amount | $ 125.0 | $ 125.0 | $ 0 | $ 0 | $ 0 | ||||
| Amount of gain included in long-term debt | 4.3 | 11.0 | |||||||
| Cash flow hedges [Abstract] | |||||||||
| Commodity forward contracts with Wells Fargo | 55.7 | ||||||||
| Commodity forward contracts with Citibank | 30.2 | ||||||||
| Cash Flow Hedges Derivative Instruments at Fair Value, Net | 2.6 | ||||||||
| Approximate amount of deferred gains would be reclassified into earnings during the next twelve months | 0.9 | ||||||||
| Fair value hedges [Abstract] | |||||||||
| Amount of terminated interest rate swaps | 73.1 | ||||||||
| Gain on terminated interest rate swaps | 0.9 | 2.2 | |||||||
| Series O Face Amount | 97.5 | ||||||||
| Series G Face Amount | $ 97.5 | ||||||||
| Interest Rate on SunBelt Notes | 7.23% | ||||||||