Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

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,
	2016			2015			2014
	(in millions)
Current period settlement on derivative contracts	$	36.4		$	(26.0	)	$	122.2
Gain (loss) on derivatives, net	(19.4		)	(28.6		)	185.6

Schedule of offsetting liabilities

The offsetting assets and liabilities for the Refining Partnership's derivatives as of December 31, 2016 are recorded as current assets and current liabilities in prepaid expenses and other current assets and other current liabilities, respectively, in the Consolidated Balance Sheets as follows:



	As of December 31, 2016
Description	Gross Current Liabilities		Gross Amounts Offset		Net Current Liabilities Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	11.1	$	—	$	11.1	$	—	$	11.1
Total	$	11.1	$	—	$	11.1	$	—	$	11.1



	As of December 31, 2015
Description	Gross Current Liabilities		Gross Amounts Offset		Net Current Liabilities Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	0.1	$	—	$	0.1	$	—	$	0.1
Total	$	—	$	—	$	—	$	—	$	—

Schedule of offsetting assets

The offsetting assets and liabilities for the Refining Partnership's derivatives as of December 31, 2015 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, 2015
Description	Gross Current Assets		Gross Amounts Offset			Net Current Assets Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Commodity Swaps	$	44.8	$	(0.1	)	$	44.7	$	—	$	44.7
Total	$	44.8	$	(0.1	)	$	44.7	$	—	$	44.7