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v3.25.3

Employee Benefit Plans: Plan Contributions (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2025 USD ($)
Defined Benefit Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
Payment for Pension Benefits | $ 1.8
Estimated Future Employer Contributions in Current Fiscal Year | 0.0
Other Postretirement Benefits Plan |
Defined Benefit Plan Disclosure [Line Items] |
Payment for Pension Benefits | 3.5
Estimated Future Employer Contributions in Current Fiscal Year | 1.2
Supplemental Non-Qualified Defined Benefit Plans |
Defined Benefit Plan Disclosure [Line Items] |
Payment for Pension Benefits | 2.1
Estimated Future Employer Contributions in Current Fiscal Year | $ 0.7

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