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v3.21.1

Variable Interest Entities (Narrative) (Details) | 3 Months Ended | 4 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) Rate MW | Mar. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) Rate MW | Dec. 31, 2020 USD ($)
Variable Interest Entity [Line Items] |  |  |  |
Nameplate Capacity | MW | 102 |  | 102 |
Wind Power Purchase Agreement, Purchase Percentage | Rate | 100.00% |  | 100.00% |
Total Equity Membership Interest | 100.00% |  | 100.00% |
Additional Obligation to the Developer | $ 6,000,000.0 |  | $ 6,000,000.0 |
Payment to renewable generation asset developer | (7,400,000) | $ 0 |  |
Total Obligation to the Developer | 75,700,000 |  | 75,700,000 |
Total Contributions | 170,100,000 |  | 170,100,000 |
VIE Net Assets | 170,000,000.0 |  | 170,000,000.0 | $ 156,400,000
Noncontrolling interest in consolidated subsidiaries | 94,100,000 |  | $ 94,100,000 | $ 85,600,000
Net income attributable to noncontrolling interest | $ 1,000,000.0 | $ 0 |  |
Rosewater Wind Farm |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Wind Power Purchase Agreement, Purchase Percentage | Rate | 100.00% |  | 100.00% |
NIPSCO |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Cash Contribution | $ 100,000 |  | $ 800,000 |
Tax Equity Partner |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Cash Contribution | $ 7,500,000 |  | $ 93,600,000 |

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