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Debt and Credit Arrangements - Interest Expense and Financing Cost Amortization (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Debt Instrument |  |  |  |
Financing costs amortization | $ 0.7 | $ 1.2 | $ 2.1 | $ 3.5
Revolving Credit Facility |  |  |  |
Debt Instrument |  |  |  |
Interest expense, debt | 6.4 | 2.9 | 14.7 | 6.0
Financing costs amortization | 0.5 | 1.0 | 1.4 | 2.8
Revolving Credit Facility | Senior secured revolving credit facility due October 2026 |  |  |  |
Debt Instrument |  |  |  |
Interest expense, debt | 6.4 | 0.0 | 14.7 | 0.0
Financing costs amortization | 0.5 | 0.0 | 1.4 | 0.0
Revolving Credit Facility | Term long due June 2024 |  |  |  |
Debt Instrument |  |  |  |
Interest expense, debt | 0.0 | 1.3 | 0.0 | 2.4
Financing costs amortization | 0.0 | 1.0 | 0.0 | 2.8
Revolving Credit Facility | Interest expense, senior secured revolving credit facilities due 2024 |  |  |  |
Debt Instrument |  |  |  |
Interest expense, debt | $ 0.0 | $ 1.6 | $ 0.0 | $ 3.6

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