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v3.25.2

Variable Interest Entities (Narrative) (Details) $ in Millions |  |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 18, 2025 USD ($) | May 31, 2025 USD ($) | Feb. 03, 2025 USD ($) | Jan. 15, 2025 USD ($) | Jun. 30, 2025 USD ($) Rate MW | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) Rate MW | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |
Wind Power Purchase Agreement, Purchase Percentage | Rate |  |  |  |  | 100.00% |  | 100.00% |  |
Payments to Acquire Assets, Investing Activities | $ | $ 262.4 | $ 141.4 | $ 217.6 | $ 336.6 |  |  |  |  |
Income Taxes | $ |  |  |  |  | $ 23.8 | $ 17.6 | $ 129.5 | $ 93.6 |
Contributions from NIPSCO minority interest holders | $ |  |  |  |  | 99.5 | 59.7 | 134.3 | 59.7 |
Payments to Noncontrolling Interests | $ |  |  |  |  | $ 26.9 | $ 20.2 | $ 44.4 | $ 20.2 | $ 20.2
Rosewater |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |
Nameplate Capacity | MW |  |  |  |  | 102 |  | 102 |  |
Indiana Crossroads Wind |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |
Nameplate Capacity | MW |  |  |  |  | 302 |  | 302 |  |
Indiana Crossroads Solar |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |
Nameplate Capacity | MW |  |  |  |  | 200 |  | 200 |  |
Dunns Bridge I |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |
Nameplate Capacity | MW |  |  |  |  | 265 |  | 265 |  |

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