Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule Of NYMEX Contracts And Butane Price Swap Purchase Agreements

As outlined in the table below, our open NYMEX contracts at December 31, 2015 were as follows:

Type of Contract/Accounting Methodology	Product Represented by the Contract and Associated Barrels	Maturity Dates
NYMEX - Fair Value Hedges	0.7 million barrels of crude oil	Between January 2016 and November 2017
NYMEX - Economic Hedges	4.5 million barrels of refined products and crude oil	Between January and December 2016
NYMEX - Economic Hedges	0.9 million barrels of butane	Between January and December 2016

Derivatives and Offset Amounts [Table Text Block]

December 31, 2014 and 2015 (in thousands):

	December 31, 2014
Description	Gross Amounts of Recognized Assets		Gross Amounts of Liabilities Offset in the Consolidated Balance Sheets			Net Amounts of Assets Presented in the Consolidated Balance Sheets(1)		Margin Deposit Amounts Not Offset in the Consolidated Balance Sheets			Net Asset Amount(3)
Energy commodity derivatives	$	106,764	$	(10,622	)	$	96,142	$	(78,279	)	$	17,863

	December 31, 2015
Description	Gross Amounts of Recognized Assets		Gross Amounts of Liabilities Offset in the Consolidated Balance Sheets			Net Amounts of Assets Presented in the Consolidated Balance Sheets(2)		Margin Deposit Amounts Not Offset in the Consolidated Balance Sheets			Net Asset Amount(3)
Energy commodity derivatives	$	48,367	$	(5,646	)	$	42,721	$	(24,252	)	$	18,469

(1) Net amount includes energy commodity derivative contracts classified as current assets, net, of $87,151, current liabilities of $5,413 and noncurrent assets of $14,404.

(2) Net amount includes energy commodity derivative contracts classified as current assets, net, of $39,243 and noncurrent assets of $3,478.

(3) This represents the maximum amount of loss we would incur if our counterparties failed to perform on their derivative contracts.

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

The changes in derivative activity included in AOCL for the years ended December 31, 2013, 2014 and 2015 were as follows (in thousands):

	Year Ended December 31,
Derivative Gains (Losses) Included in AOCL	2013			2014			2015
Beginning balance	$	14,126		$	13,627		$	(16,587	)
Net loss on interest rate contract cash flow hedges	(4,744		)	(30,090		)	(14,904		)
Reclassification of net loss (gain) on cash flow hedges to income	4,245			(124		)	1,365
Ending balance	$	13,627		$	(16,587	)	$	(30,126	)

Derivatives And Hedging-Cash Flow Hedges

The following is a summary of the effect on our consolidated statements of income for the years ended December 31, 2013, 2014 and 2015 of derivatives accounted for under ASC 815-30, Derivatives and Hedging—Cash Flow Hedges, that were designated as hedging instruments (in thousands).

	Year Ended December 31, 2013
Derivative Instrument	Amount of Loss Recognized in AOCL on  Derivative				Location of Gain (Loss) Reclassified from AOCL into Income	Amount of Gain (Loss) Reclassified from AOCL into Income
						Effective Portion				Ineffective Portion
Interest rate contracts		$	(184	)	Interest expense		$	163			$	—
NYMEX commodity contracts		(4,560		)	Product sales revenue		(4,408		)		—
Total cash flow hedges		$	(4,744	)	Total		$	(4,245	)		$	—

	Year Ended December 31, 2014
Derivative Instrument	Amount of Loss Recognized in AOCL on  Derivative				Location of Gain (Loss) Reclassified from AOCL into Income	Amount of Gain (Loss) Reclassified from AOCL into Income
						Effective Portion				Ineffective Portion
Interest rate contracts		$	(30,090	)	Interest expense		$	(242	)		$	366

	Year Ended December 31, 2015
Derivative Instrument	Amount of Loss Recognized in AOCL on  Derivative				Location of Loss Reclassified from AOCL into Income	Amount of Loss Reclassified from AOCL into Income
						Effective Portion				Ineffective Portion
Interest rate contracts		$	(14,904	)	Interest expense		$	(1,365	)		$	—

Derivatives And Hedging-Overall-Subsequent Measurement

The following table provides a summary of the effect on our consolidated statements of income for the years ended December 31, 2013, 2014 and 2015 that were not designated as hedging instruments (in thousands):

		Amount of Gain (Loss) Recognized on Derivative
		Year Ended December 31,
Derivative Instrument	Location of Gain (Loss) Recognized on Derivative	2013			2014			2015
NYMEX commodity contracts	Product sales revenue	$	(6,189	)	$	145,320		$	68,426
NYMEX commodity contracts	Operating expenses	(3,770		)	17,818			11,819
NYMEX commodity contracts	Cost of product sales	2,682			(17,141		)	(8,997		)
	Total	$	(7,277	)	$	145,997		$	71,248

Derivatives And Hedging-Designated

The following tables provide a summary of the amounts included on our consolidated balance sheets that were designated as hedging instruments as of December 31, 2014 and 2015 (in thousands):

	December 31, 2014
	Asset Derivatives			Liability Derivatives
Derivative Instrument	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
NYMEX commodity contracts	Energy commodity derivatives contracts, net	$	360	Energy commodity derivatives contracts, net	$	—
NYMEX commodity contracts	Other noncurrent assets	14,404		Other noncurrent liabilities	—
Interest rate contracts	Other current assets	—		Other current liabilities	26,478
	Total	$	14,764	Total	$	26,478
	December 31, 2015
	Asset Derivatives			Liability Derivatives
Derivative Instrument	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
NYMEX commodity contracts	Energy commodity derivatives contracts, net	$	60	Energy commodity derivatives contracts, net	$	—
NYMEX commodity contracts	Other noncurrent assets	3,478		Other noncurrent liabilities	—
Interest rate contracts	Other current assets	2,179		Other current liabilities	653
	Total	$	5,717	Total	$	653

The following tables provide a summary of the amounts included on our consolidated balance sheets that were not designated as hedging instruments as of December 31, 2014 and 2015 (in thousands):

	December 31, 2014
	Asset Derivatives			Liability Derivatives
Derivative Instrument	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
NYMEX commodity contracts	Energy commodity derivatives contracts, net	$	92,000	Energy commodity derivatives contracts, net	$	10,622
	December 31, 2015
	Asset Derivatives			Liability Derivatives
Derivative Instrument	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
NYMEX commodity contracts	Energy commodity derivatives contracts, net	$	44,829	Energy commodity derivatives contracts, net	$	5,646