The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Section 50
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- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Investments - Epic Gas (Details) - Epic Gas - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Aug. 31, 2017	Nov. 30, 2016
Schedule of Equity Method Investments [Line Items]
Ownership percentage							21.10%
Our investment in Epic Gas							$ 21.0	$ 21.5
Net loss	$ (5.4)	$ (3.4)	$ (15.9)	$ (0.9)	$ (1.4)	$ (11.4)