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Power Generating Capacity of Projects Acquired

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 805
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-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

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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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The number of businesses acquired by the entity during the period.

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Investments (Acquisitions) (Details) $ in Millions		3 Months Ended	24 Months Ended
Investments (Acquisitions) (Details) $ in Millions	Dec. 31, 2015 USD ($) business	Jun. 30, 2016 USD ($)	Dec. 31, 2017 USD ($) MWh business
Edison Energy Group
Investment Holdings [Line Items]
After tax charge related to the buy-out of an earn-out provision		$ 13.0
Edison Energy Group \| Series of Individually Immaterial Business Acquisitions
Investment Holdings [Line Items]
Businesses acquired \| business	3
Aggregate purchase price	$ 100.0
Intangible Assets, Net (Including Goodwill)	$ 90.0
Subsidiary Of SoCore Energy [Member] \| Minnesota solar garden development project
Investment Holdings [Line Items]
Aggregate purchase price			$ 19.4
Power generating capacity of acquired projects (in megawatts) \| MWh			42
Subsidiary Of SoCore Energy [Member] \| Series of Individually Immaterial Business Acquisitions
Investment Holdings [Line Items]
Businesses acquired \| business			6
SoCore Energy \| Minnesota solar garden development project
Investment Holdings [Line Items]
Reimbursed project-specific interconnection costs			$ 2.6