Segment Data (Tables)

12 Months Ended

Dec. 31, 2015

Segment Data [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following is a summary of business segment operating performance as measured by contribution margin for the period indicated (in millions):

	As of and For the Year Ended December 31, 2015
(In millions)	Refining		Retail		Logistics		Corporate, Other and Eliminations			Consolidated
Net sales (excluding intercompany fees and sales)	$	3,820.8	$	1,490.2	$	447.0	$	4.0		$	5,762.0
Intercompany fees and sales	619.4		—		142.7		(762.1		)	—
Operating costs and expenses:
Cost of goods sold	4,022.2		1,288.9		436.3		(731.8		)	5,015.6
Operating expenses	225.4		137.6		44.9		(1.3		)	406.6
Segment contribution margin	$	192.6	$	63.7	$	108.5	$	(25.0	)	339.8
General and administrative expenses										126.0
Depreciation and amortization										134.0
Other operating income										(0.9		)
Operating income										$	80.7
Total assets	$	1,895.7	$	445.0	$	375.3	$	608.9		$	3,324.9
Capital spending (excluding business combinations)	$	164.5	$	18.3	$	18.6	$	17.2		$	218.6

	As of and For the Year Ended December 31, 2014
(In millions)	Refining		Retail		Logistics		Corporate, Other and Eliminations			Consolidated
Net sales (excluding intercompany fees and sales)	$	5,728.4	$	1,869.3	$	726.7	$	(0.1	)	$	8,324.3
Intercompany fees and sales	622.1		—		114.6		(736.7		)	—
Operating costs and expenses:
Cost of goods sold	5,664.8		1,671.5		697.2		(718.3		)	7,315.2
Operating expenses	221.0		136.8		39.5		1.5			398.8
Segment contribution margin	$	464.7	$	61.0	$	104.6	$	(20.0	)	610.3
General and administrative expenses										133.4
Depreciation and amortization										111.5
Other operating income										(1.1		)
Operating income										$	366.5
Total assets	$	1,937.7	$	447.1	$	331.3	$	172.6		$	2,888.7
Capital spending (excluding business combinations)	$	199.1	$	26.2	$	9.2	$	22.4		$	256.9

	As of and For the Year Ended December 31, 2013
(In millions)	Refining		Retail		Logistics		Corporate, Other and Eliminations			Consolidated
Net sales (excluding intercompany fees and sales)	$	6,005.1	$	1,871.4	$	829.8	$	0.5		$	8,706.8
Intercompany fees and sales	430.7		—		77.6		(508.3		)	—
Operating costs and expenses:
Cost of goods sold	5,865.2		1,691.3		811.3		(487.1		)	7,880.7
Operating expenses	222.8		132.5		35.9		(3.8		)	387.4
Segment contribution margin	$	347.8	$	47.6	$	60.2	$	(16.9	)	438.7
General and administrative expenses										111.2
Depreciation and amortization										89.8
Operating income										$	237.7
Capital spending (excluding business combinations)	$	123.6	$	37.9	$	25.8	$	35.0		$	222.3