Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Gain (loss) on derivatives, net and current period settlements

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



	Three Months Ended March 31,
	2017		2016
	(in millions)
Current period settlements on derivative contracts	$	1.2	$	21.4
Gain (loss) on derivatives, net	12.2		(1.2		)

Derivative offsetting liabilities

The offsetting assets and liabilities for the Refining Partnership's derivatives as of March 31, 2017 are recorded as current assets and current liabilities in prepaid expenses and other current assets and other current liabilities, respectively, in the Condensed Consolidated Balance Sheets as follows:



	As of March 31, 2017
Description	Gross Current Liabilities		Gross Amounts Offset		Net Current Liabilities Presented		Cash Collateral Not Offset		Net Amount
	(in millions)
Futures Contracts	$	0.1	$	—	$	0.1	$	—	$	0.1
Total	$	0.1	$	—	$	0.1	$	—	$	0.1

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 Condensed 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