Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cost of sales	$ 3,015.5	$ 3,245.3	$ 2,494.5
Operating expenses	398.5	419.9	283.6
General and administrative	122.5	136.9	97.3
Related Party
Cost of sales	150.1	141.3	354.3
Operating expenses	0.5	0.5	5.9
General and administrative	$ 0.0	$ 0.2	$ 11.6

Cost of oil and gas purchased during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62136-109447

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