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Non Operating Income and Expenses (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Income and Expenses [Abstract] |  |  |
Interest Expense | $ (31.9) | $ (34.3) | $ (35.5)
Interest Costs Capitalized Adjustment | 0.8 | 0.2 | 0.3
Amortization of Debt Issuance Costs | (1.3) | (1.5) | (1.8)
Interest Income, Other | 2.4 | 1.0 | 0.6
Interest expense, net | (30.0) | (34.6) | (36.4)
Debt retirement costs | $ (3.1) | $ (0.5) | $ (1.0)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense)
Nonoperating Income (Expense) | $ (33.0) | $ (40.9) | $ (47.7)

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