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v3.25.4

Investments (Details-4) - ATC [Member] - Affiliated Entity [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Operating Costs and Expenses [Abstract] |  |  |
Operating Costs and Expenses, Total | $ 40.8 | $ 36.3 | $ 33.8
Receivables [Abstract] |  |  |
Other Receivables | $ 2.5 | $ 2.0 |

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