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Acquisitions - Upstream (Details) - Upstream Wind Energy Center [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($) MW
Business Acquisition [Line Items] |
Number of years Upstream will receive fixed payment | 10 years
Capacity of Upstream Wind Energy Center | MW | 202.5
Acquisition purchase price | $ | $ 276.0
Bonus depreciation percentage | 100.00%
WEC's ownership interest in Upstream Wind Energy Center | 80.00%

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- Definition Capacity of Upstream Wind Energy Center + References No definition available. + Details
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- Definition Number of years during which Upstream Wind Energy Center will receive a fixed payment in exchange for substantially all its energy output per energy swap agreement + References No definition available. + Details
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- Details
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