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Employee Benefit Plans and Other Postretirement Benefit Plans Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Jan. 01, 2025 | Dec. 31, 2024
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Defined Benefit Plan Disclosure [Line Items] |  |  |
Liability, Defined Benefit Pension Plan, Noncurrent | $ 77.6 |  | $ 78.3
Liability, Other Postretirement Defined Benefit Plan, Noncurrent | $ 264.0 |  | $ 265.3
Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  | $ 1.1 |
Other Postretirement Benefits Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year |  | $ 11.6 |

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