Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Components of gain (loss) on derivatives, net

Gain (loss) on derivatives, net and current period settlements on derivative contracts were as follows:



	Three Months Ended June 30,					Six Months Ended June 30,
	2015			2014		2015			2014
	(in millions)
Current period settlements on derivative contracts	$	(28.5	)	$	33.9	$	(34.8	)	$	55.0
Gain (loss) on derivatives, net	(12.6		)	35.9		(64.0		)	145.3

Schedule of offsetting assets

The offsetting assets and liabilities for the Refining Partnership's derivatives as of June 30, 2015 are recorded as current assets, non-current assets and current liabilities in prepaid expenses and other current assets, other long-term assets and other current liabilities, respectively, in the Condensed Consolidated Balance Sheets as follows:



	As of June 30, 2015
Description	Gross Current Assets		Gross Amounts Offset			Net Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	16.4	$	(2.0	)	$	14.4	$	—	$	14.4
Total	$	16.4	$	(2.0	)	$	14.4	$	—	$	14.4



	As of June 30, 2015
Description	Gross Non-Current Assets		Gross Amounts Offset			Net Non-Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	8.6	$	(0.1	)	$	8.5	$	—	$	8.5
Total	$	8.6	$	(0.1	)	$	8.5	$	—	$	8.5

The offsetting assets and liabilities for the Refining Partnership's derivatives as of December 31, 2014 are recorded as current assets and non-current assets in prepaid expenses and other current assets and other long-term assets, respectively, in the Condensed Consolidated Balance Sheets as follows:



	As of December 31, 2014
Description	Gross Current Assets		Gross Amounts Offset			Net Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	25.3	$	(0.3	)	$	25.0	$	—	$	25.0
Total	$	25.3	$	(0.3	)	$	25.0	$	—	$	25.0



	As of December 31, 2014
Description	Gross Non-Current Assets		Gross Amounts Offset		Net Non-Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	22.3	$	—	$	22.3	$	—	$	22.3
Total	$	22.3	$	—	$	22.3	$	—	$	22.3

Schedule of offsetting liabilities



	As of June 30, 2015
Description	Gross Current Liabilities		Gross Amounts Offset			Net Current Liabilities Presented		Cash Collateral Not Offset			Net Amount
	(in millions)
Commodity Swaps	$	7.8	$	(4.5	)	$	3.3	$	—		$	3.3
Other Derivative Activity	1.5		—			1.5		(1.5		)	—
Total	$	9.3	$	(4.5	)	$	4.8	$	(1.5	)	$	3.3