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Organization and Business - Narrative (Details) - segment	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016
Business And Organization [Line Items]
Number of reportable segments	7
DMi Inc. | Other
Business And Organization [Line Items]
Percentage of ownership	56.00%
NerVve Technologies Inc. | Other
Business And Organization [Line Items]
Percentage of ownership	72.00%
Construction
Business And Organization [Line Items]
Parents controlling interest (as a percent)	92.00%
Marine Services
Business And Organization [Line Items]
Parents controlling interest (as a percent)	95.00%
Insurance Companies
Business And Organization [Line Items]
Parents controlling interest (as a percent)	100.00%	100.00%
Energy
Business And Organization [Line Items]
Parents controlling interest (as a percent)	49.99%
PTGI-ICS
Business And Organization [Line Items]
Parents controlling interest (as a percent)	100.00%	100.00%
Genoval Orthopedics inc.
Business And Organization [Line Items]
Parents controlling interest (as a percent)	77.00%
GemDerm Aesthetics, Inc
Business And Organization [Line Items]
Parents controlling interest (as a percent)	67.00%
Benevir Biopharm, Inc.
Business And Organization [Line Items]
Parents controlling interest (as a percent)	80.00%

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Business And Organization [Line Items]

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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