Investments - Epic Gas (Details) - Epic Gas - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Feb. 28, 2018	Nov. 30, 2017
Schedule of Equity Method Investments [Line Items]
Ownership percentage			21.10%	21.10%
Our investment in Epic Gas			$ 21.0	$ 22.2
Net loss	$ (16.4)	$ (15.9)

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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-Name Accounting Standards Codification
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The amount of net income (loss) reported by an equity method investment of the entity.

+ References

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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

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