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 cash outflow from amounts paid for the rights to manage the property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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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.

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No definition available.

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Related Party Transactions Itasca Capital Ltd. (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2018	Sep. 30, 2017
Board of Directors Chairman [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage	32.30%		40.60%
Chief Financial Officer [Member]
Related Party Transaction [Line Items]
Payments to Acquire Management Contract Rights	$ 0.0	$ 0.0
Corporate Segment [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage			22.90%	31.20%