Business Segments (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Schedule of segment information

The following table summarizes certain operating results and capital expenditures information by segment:

	Three Months Ended   March 31,
	2016			2015
	(in millions)
Net sales
Petroleum	$	834.0		$	1,304.4
Nitrogen Fertilizer	73.1			93.1
Intersegment elimination	(1.6		)	(8.6		)
Total	$	905.5		$	1,388.9
Cost of product sold (exclusive of depreciation and amortization)
Petroleum	$	722.3		$	1,056.1
Nitrogen Fertilizer	16.3			25.8
Intersegment elimination	(1.8		)	(8.3		)
Total	$	736.8		$	1,073.6
Direct operating expenses (exclusive of depreciation and amortization)
Petroleum	$	117.7		$	87.0
Nitrogen Fertilizer	23.7			24.4
Other	—			—
Total	$	141.4		$	111.4
Depreciation and amortization
Petroleum	$	31.5		$	34.0
Nitrogen Fertilizer	7.0			6.8
Other	1.5			1.2
Total	$	40.0		$	42.0
Operating income (loss)
Petroleum	$	(56.0	)	$	109.2
Nitrogen Fertilizer	19.7			31.5
Other	(3.6		)	(4.1		)
Total	$	(39.9	)	$	136.6
Capital expenditures
Petroleum	$	44.0		$	41.7
Nitrogen Fertilizer	1.7			2.7
Other	1.8			1.1
Total	$	47.5		$	45.5

	As of March 31, 2016		As of December 31, 2015
	(in millions)
Total assets
Petroleum	$	2,116.9	$	2,189.0
Nitrogen Fertilizer	529.2		536.3
Other	537.4		574.1
Total	$	3,183.5	$	3,299.4
Goodwill
Petroleum	$	—	$	—
Nitrogen Fertilizer	41.0		41.0
Other	—		—
Total	$	41.0	$	41.0