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Variable Interest Entities (Schedule of Cash Contributions) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash Contributions Noncontrolling Interest [Line Items] |  |  |
Obligation to the Developer | $ 277.5 | $ 69.7 | $ 0.0
Rosewater |  |  |
Cash Contributions Noncontrolling Interest [Line Items] |  |  |
NIPSCO Cash Contribution | 0.1 | 0.7 |
Tax Equity Partners Cash Contribution | 7.5 | 86.1 |
Obligation to the Developer | 6.0 | 69.7 |
Total Cash Contributions | 13.6 | 156.5 |
Indiana Crossroads Wind |  |  |
Cash Contributions Noncontrolling Interest [Line Items] |  |  |
NIPSCO Cash Contribution | 2.7 | 0.0 |
Tax Equity Partners Cash Contribution | 237.6 |  |
Obligation to the Developer | 271.5 | 0.0 |
Total Cash Contributions | $ 511.8 | $ 0.0 |

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- Details
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