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v3.19.2

Notes to the Consolidated Financial Statements - Narrative (Details) - business_unit | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Jun. 30, 2019
Schedule of Equity Method Investments [Line Items] |  |  |
Number of business units | 2 | 2 |
Atlantica |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage, equity method investment | 41.50% |  | 44.20%

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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