DERIVATIVES AND RISK MANAGEMENT ACTIVITIES (Tables)
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6 Months Ended |
Jun. 30, 2016 |
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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 | | June 30,
2016 | | December 31,
2015 | | June 30,
2016 | | December 31,
2015 | | | | (Thousands of Dollars) | Derivatives Designated as Hedging Instruments: | | | | | | | | | | Commodity contracts | Other current assets | | $ | — |
| | $ | 1,937 |
| | $ | — |
| | $ | (23 | ) | Interest rate swaps | Other long-term assets, net | | — |
| | 2,755 |
| | — |
| | — |
| Commodity contracts | Accrued liabilities | | 333 |
| | — |
| | (484 | ) | | — |
| Interest rate swaps | Other long-term liabilities | | — |
| | — |
| | (48,875 | ) | | (1,452 | ) | Total | | | 333 |
| | 4,692 |
| | (49,359 | ) | | (1,475 | ) | | | | | | | | | | | Derivatives Not Designated as Hedging Instruments: | | | | | | | | | | Commodity contracts | Other current assets | | 224 |
| | 34,016 |
| | — |
| | (24,528 | ) | Commodity contracts | Accrued liabilities | | 8,306 |
| | 117 |
| | (13,253 | ) | | (237 | ) | Total | | | 8,530 |
| | 34,133 |
| | (13,253 | ) | | (24,765 | ) | | | | | | | | | | | Total Derivatives | | | $ | 8,863 |
| | $ | 38,825 |
| | $ | (62,612 | ) | | $ | (26,240 | ) |
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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 | | June 30,
2016 | | December 31,
2015 | | | (Thousands of Dollars) | Net amounts of assets presented in the consolidated balance sheets | | $ | 224 |
| | $ | 11,402 |
| Net amounts of liabilities presented in the consolidated balance sheets | | $ | (5,098 | ) | | $ | (120 | ) |
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| Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block] |
We recognize the impact of our commodity contracts on earnings in “Cost of product sales” on the condensed consolidated statements of comprehensive income, and that impact was as follows: | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2016 | | 2015 | | 2016 | | 2015 | | (Thousands of Dollars) | Derivatives Designated as Fair Value Hedging Instruments: | | | | | | | | Loss recognized in income on derivative | $ | (5,792 | ) | | $ | (6,663 | ) | | $ | (6,804 | ) | | $ | (4,499 | ) | Gain recognized in income on hedged item | 6,938 |
| | 8,407 |
| | 9,804 |
| | 6,731 |
| Gain recognized in income for ineffective portion | 1,146 |
| | 1,744 |
| | 3,000 |
| | 2,232 |
| | | | | | | | | Derivatives Not Designated as Hedging Instruments: | | | | | | | | Loss recognized in income on derivative | $ | (724 | ) | | $ | (339 | ) | | $ | (4 | ) | | $ | (9 | ) |
Our interest rate swaps had the following impact on earnings: | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | 2016 | | 2015 | | 2016 | | 2015 | | (Thousands of Dollars) | Derivatives Designated as Cash Flow Hedging Instruments: | | | | | | | | (Loss) gain recognized in other comprehensive income on derivative (effective portion) | $ | (20,200 | ) | | $ | 20,788 |
| | $ | (50,178 | ) | | $ | 18,753 |
| Loss reclassified from AOCI into interest expense, net (effective portion) | $ | (2,158 | ) | | $ | (2,506 | ) | | $ | (4,380 | ) | | $ | (5,044 | ) |
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