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Acquisitions - Blooming Grove (Details) - Subsequent event - Blooming Grove Wind Energy Center $ in Millions | Feb. 19, 2020 USD ($) | Jan. 27, 2020 USD ($) MW
--- | --- | ---
Business Acquisition [Line Items] |  |
Capacity of generation unit | MW |  | 250
Bonus depreciation percentage |  | 100.00%
WECI |  |
Business Acquisition [Line Items] |  |
Ownership interest in wind generating facility acquired |  | 80.00%
Acquisition purchase price | $ | $ 44 | $ 345
Additional ownership interest acquired | 10.00% |

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