DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 3 (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss)
Gain (loss) to be reclassified during next 12 months, forward-starting interest rate swaps	$ (7,500)		$ (7,500)
Designated as Hedging Instruments \| Fair Value Hedges \| Commodity contracts \| Cost of product sales
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income on derivative	(5,792)	$ (6,663)	(6,804)	$ (4,499)
Gain (loss) recognized in income on hedged item	6,938	8,407	9,804	6,731
Gain (loss) recognized in income for ineffective portion	1,146	1,744	3,000	2,232
Designated as Hedging Instruments \| Cash Flow Hedges \| Interest rate swaps \| Interest expense, net
Derivative Instruments, Gain (Loss)
Gain (loss) reclassified from AOCI into interest expense, net (effective portion)	(2,158)	(2,506)	(4,380)	(5,044)
Designated as Hedging Instruments \| Cash Flow Hedges \| Interest rate swaps \| Other comprehensive income
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in other comprehensive income on derivative (effective portion)	(20,200)	20,788	(50,178)	18,753
Not Designated as Hedging Instruments \| Commodity contracts \| Cost of product sales
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income on derivative	$ (724)	$ (339)	$ (4)	$ (9)

Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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-Name Accounting Standards Codification
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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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