Additional cost method investment ownership percentage acquired.

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- Definition

Business Combination, Cost Method Investment Acquired

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- Definition

Business Combination, Equity Method Investment Acquired

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- Definition

Business Combination, Recognizable Identifiable Assets and Liabilities Assumed, Partners Capital

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed asset retirement obligation

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- Definition

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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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

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-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464

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Acquisitions - Book Value of Net Assets Acquired (Details) - USD ($) $ in Millions	Dec. 27, 2016	Oct. 03, 2016	May 23, 2016	Nov. 17, 2015	May 18, 2015
December 2016 Acquisition
Business Acquisition [Line Items]
Cost investments	$ 2.1
Equity method investments	39.9
Book value of net assets	42.0
December 2016 Acquisition \| Endymion
Business Acquisition [Line Items]
Book value of net assets	$ 20.8
Voting interest acquired	10.00%
December 2016 Acquisition \| Proteus
Business Acquisition [Line Items]
Book value of net assets	$ 19.1
Voting interest acquired	10.00%
December 2016 Acquisition \| Cleopatra
Business Acquisition [Line Items]
Book value of net assets	$ 2.1
Voting interest acquired	1.00%
Odyssey \| Odyssey
Business Acquisition [Line Items]
Book value of net assets		$ 3.0
Voting interest acquired		49.00%
Mars
Business Acquisition [Line Items]
Book value of net assets		$ 51.3
Voting interest acquired		20.00%
October 2016 Acquisitions
Business Acquisition [Line Items]
Equity method investments		$ 54.3
Book value of net assets		$ 54.3
May 2016 Acquisition
Business Acquisition [Line Items]
Cost investments			$ 5.2
Partners capital			87.0
Book value of net assets			$ 92.2
Zydeco
Business Acquisition [Line Items]
Voting interest acquired			30.00%
Bengal
Business Acquisition [Line Items]
Voting interest acquired			1.00%
Colonial
Business Acquisition [Line Items]
Voting interest acquired			3.00%
Pecten
Business Acquisition [Line Items]
Property, plant and equipment, net				$ 95.2
Asset retirement obligation				(1.3)
Book value of net assets				$ 93.9
May 2015 Acquisition
Business Acquisition [Line Items]
Cost investments					$ 2.5
Partners capital					52.9
Book value of net assets					$ 55.4
Purchase and Sale Agreement \| Colonial
Business Acquisition [Line Items]
Additional cost method investment percentage acquired					1.388%