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DERIVATIVES AND RISK MANAGEMENT ACTIVITIES (Tables)
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3 Months Ended |
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Mar. 31, 2014
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| Derivative Instruments and Hedging Activities Disclosure [Abstract] |
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| Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] |
The fair values of our derivative instruments included in our consolidated balance sheets were as follows: | | | | | | | | | | | | | | | | | | | | | | Asset Derivatives | | Liability Derivatives | | Balance Sheet Location | | March 31,
2014 | | December 31, 2013 | | March 31,
2014 | | December 31, 2013 | | | | (Thousands of Dollars) | Derivatives Designated as Hedging Instruments: | | | | | | | | | | Commodity contracts | Other current assets | | $ | 402 |
| | $ | — |
| | $ | (13 | ) | | $ | — |
| Commodity contracts | Accrued liabilities | | — |
| | — |
| | — |
| | (130 | ) | Total | | | 402 |
| | — |
| | (13 | ) | | (130 | ) | | | | | | | | | | | Derivatives Not Designated as Hedging Instruments: | | | | | | | | | | Commodity contracts | Other current assets | | 17,941 |
| | 16,168 |
| | (13,056 | ) | | (11,220 | ) | Commodity contracts | Other long-term assets, net | | 1,151 |
| | 15,883 |
| | (357 | ) | | (8,906 | ) | Commodity contracts | Accrued liabilities | | 2,215 |
| | 4,523 |
| | (4,789 | ) | | (6,626 | ) | Commodity contracts | Other long-term liabilities | | 4,568 |
| | 5,448 |
| | (4,979 | ) | | (7,023 | ) | Total | | | 25,875 |
| | 42,022 |
| | (23,181 | ) | | (33,775 | ) | | | | | | | | | | | Total Derivatives | | | $ | 26,277 |
| | $ | 42,022 |
| | $ | (23,194 | ) | | $ | (33,905 | ) |
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| Derivatives Assets And Liabilities Eligible for Offset Net [Table Text Block] |
The following are the net amounts presented on the consolidated balance sheets: | | | | | | | | | | Commodity Contracts | | March 31,
2014 | | December 31, 2013 | | | (Thousands of Dollars) | Net amounts of assets presented in the consolidated balance sheets | | $ | 6,068 |
| | $ | 11,925 |
| Net amounts of liabilities presented in the consolidated balance sheets | | $ | (2,985 | ) | | $ | (3,808 | ) |
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| Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block] |
The earnings impact of our derivative activity was as follows: | | | | | | | | | | | | | | | | Derivatives Designated as Fair Value Hedging Instruments | | Income Statement Location | | Amount of Gain (Loss) Recognized in Income on Derivative (Effective Portion) | | Amount of Gain (Loss) Recognized in Income on Hedged Item | | Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion) | | | | | (Thousands of Dollars) | Three months ended March 31, 2014: | | | | | | | | | Commodity contracts | | Cost of product sales | | $ | 1,213 |
| | $ | (2,097 | ) | | $ | (884 | ) | | | | | | | | | | Three months ended March 31, 2013: | | | | | | | | | Commodity contracts | | Cost of product sales | | $ | (1,276 | ) | | $ | 1,636 |
| | $ | 360 |
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| | | | | | | | | | | | | | | | Derivatives Designated as Cash Flow Hedging Instruments | | Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) | | Income Statement Location (a) | | Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion) | | Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion) | | | (Thousands of Dollars) | | | | (Thousands of Dollars) | Three months ended March 31, 2014: | | | | | | | | | Interest rate swaps | | $ | — |
| | Interest expense, net | | $ | (2,766 | ) | | $ | — |
| | | | | | | | | | Three months ended March 31, 2013: | | | | | | | | | Interest rate swaps | | $ | 4,687 |
| | Interest expense, net | | $ | (487 | ) | | $ | — |
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| | (a) | Amounts are included in specified location for both the gain (loss) reclassified from accumulated other comprehensive income (OCI) into income (effective portion) and the gain (loss) recognized in income on derivative (ineffective portion). |
| | | | | | | | Derivatives Not Designated as Hedging Instruments | | Income Statement Location | | Amount of Gain (Loss) Recognized in Income | | | | | (Thousands of Dollars) | Three months ended March 31, 2014: | | | | | Commodity contracts | | Cost of product sales | | $ | 32 |
| | | | | | Three months ended March 31, 2013: | | | | | Commodity contracts | | Cost of product sales | | $ | (6,827 | ) | Commodity contracts | | Operating expenses | | (1 | ) | Commodity contracts | | (Loss) income from discontinued operations | | (218 | ) | Total | | | | $ | (7,046 | ) |
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