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DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 1 (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Derivatives, Fair Value |  |
Asset Derivatives | $ 113,363 | $ 147,797
Liability Derivatives | (154,482) | (160,889)
Designated as Hedging Instrument |  |
Derivatives, Fair Value |  |
Asset Derivatives | 52,118 | 124,503
Liability Derivatives | (112,540) | (148,990)
Designated as Hedging Instrument | Commodity contracts | Other current assets |  |
Derivatives, Fair Value |  |
Asset Derivatives | 4,182 | 36,116
Liability Derivatives | (783) | (33,616)
Designated as Hedging Instrument | Commodity contracts | Other long-term assets, net |  |
Derivatives, Fair Value |  |
Asset Derivatives | 22,943 | 86,052
Liability Derivatives | (20,761) | (66,175)
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 15,132 | 0
Liability Derivatives | (40,708) | 0
Designated as Hedging Instrument | Commodity contracts | Other long-term liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 9,861 | 0
Liability Derivatives | (9,171) | 0
Designated as Hedging Instrument | Interest rate swaps | Other long-term assets, net |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 2,335
Liability Derivatives | 0 | 0
Designated as Hedging Instrument | Interest rate swaps | Accrued liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | (41,117) | (22,009)
Designated as Hedging Instrument | Interest rate swaps | Other long-term liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | (27,190)
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value |  |
Asset Derivatives | 61,245 | 23,294
Liability Derivatives | (41,942) | (11,899)
Not Designated as Hedging Instrument | Commodity contracts | Other current assets |  |
Derivatives, Fair Value |  |
Asset Derivatives | 26,484 | 15,568
Liability Derivatives | (8,505) | (5,956)
Not Designated as Hedging Instrument | Commodity contracts | Other long-term assets, net |  |
Derivatives, Fair Value |  |
Asset Derivatives | 13,726 | 7,207
Liability Derivatives | (9,233) | 0
Not Designated as Hedging Instrument | Commodity contracts | Accrued liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 21,035 | 519
Liability Derivatives | (22,249) | (5,943)
Not Designated as Hedging Instrument | Commodity contracts | Other long-term liabilities |  |
Derivatives, Fair Value |  |
Asset Derivatives | 0 | 0
Liability Derivatives | $ (1,955) | $ 0

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