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Subsequent Events - Acquisition of Two U.S. Wind Projects (Details) - Wind development project $ in Millions | Feb. 20, 2018 USD ($) counterparty power_purchase_arrangement MW
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Investment [Line Items] |
Number of construction-ready projects acquired | power_purchase_arrangement | 2
Number of counterparties | counterparty | 3
Estimated cost of investment property under development | $ | $ 240
Investment property, percentage funded in initial year | 70.00%
Pennsylvania |
Investment [Line Items] |
Capacity of facility (in megawatts) | MW | 90
Term of power purchase arrangement | 15 years
New Hampshire |
Investment [Line Items] |
Capacity of facility (in megawatts) | MW | 29
Term of power purchase arrangement | 20 years
Number of power purchase arrangements acquired | power_purchase_arrangement | 2

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- Definition Line items represent reporting 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 12 -Sentence Column A + Details
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- Details
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