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v3.21.2

Non-operating Income (Expense) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Nonoperating Income (Expense) [Abstract] |  |  |  |
Interest Expense | $ (8.5) | $ (11.7) | $ (26.9) | $ (35.4)
Amortization of Debt Issuance Costs | (0.5) | (0.5) | (1.4) | (1.7)
Interest Income, Other | 0.0 | 0.0 | 0.6 | 0.0
Interest Expense, Net | (8.9) | (12.2) | (27.5) | (37.0)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component | (2.8) | (1.9) | (7.8) | (5.7)
Nonoperating Income (Expense) | (12.2) | (17.9) | (35.7) | (47.5)
Write off of Deferred Debt Issuance Cost | (0.5) | (3.9) | (0.5) | (4.8)
Amortization of Debt Issuance Costs | 0.5 | 0.5 | 1.4 | 1.7
Interest Costs Capitalized Adjustment | $ 0.1 | 0.0 | $ 0.2 | 0.0
Senior Note Due 2023 [Member] |  |  |  |
Debt Extinguishment costs, Premium on Bonds [Abstract] |  |  |  | 2.1
Term Loan [Member] |  |  |  |
Write off of Deferred Debt Issuance Cost |  | (0.6) |  | $ (1.6)
Senior Note Due 2023 [Member] |  |  |  |
Write off of Deferred Debt Issuance Cost |  | $ (1.2) |  |
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate |  | 4.50% |  | 4.50%
Debt Instrument, Face Amount |  | $ 275.0 |  | $ 275.0

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