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Acquisitions Acquisitions from Delek (Details) - USD ($) $ in Millions			12 Months Ended
	Mar. 31, 2015	Feb. 10, 2014	Dec. 31, 2014
El Dorado Assets [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 42.5
Historical carrying value	7.6
El Dorado Terminal and Tank Assets [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 95.9	$ 95.9
Historical carrying value		$ 25.2
Tyler Assets [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	19.4
Historical carrying value	$ 11.6

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+ References

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

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