Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

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:



	Year Ended December 31,
	2014		2013		2012
	(in millions)
Current period settlement on derivative contracts	$	122.2	$	6.4	$	(137.6	)
Gain (loss) on derivatives, net	185.6		57.1		(285.6		)

Schedule of offsetting assets

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 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

The offsetting assets and liabilities for the Refining Partnership's derivatives as of December 31, 2013 are recorded as current assets, non-current assets, current liabilities and non-current liabilities in prepaid expenses and other current assets, other long-term assets, other current liabilities and other long-term liabilities, respectively, in the Consolidated Balance Sheets as follows:



	As of December 31, 2013
Description	Gross Current Assets		Gross Amounts Offset			Net Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	4.3	$	(3.4	)	$	0.9	$	—	$	0.9
Total	$	4.3	$	(3.4	)	$	0.9	$	—	$	0.9



	As of December 31, 2013
Description	Gross Non-Current Assets		Gross Amounts Offset		Net Non-Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	0.1	$	—	$	0.1	$	—	$	0.1
Total	$	0.1	$	—	$	0.1	$	—	$	0.1

Schedule of offsetting liabilities



	As of December 31, 2013
Description	Gross Current Liabilities		Gross Amounts Offset			Net Current Liabilities Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	31.4	$	(16.1	)	$	15.3	$	—	$	15.3
Total	$	31.4	$	(16.1	)	$	15.3	$	—	$	15.3



	As of December 31, 2013
Description	Gross Non-Current Liabilities		Gross Amounts Offset			Net Non-Current Liabilities Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	1.9	$	(0.1	)	$	1.8	$	—	$	1.8
Total	$	1.9	$	(0.1	)	$	1.8	$	—	$	1.8