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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accounting Policies [Abstract] |  |  |
Accounts Receivable, before Allowance for Credit Loss | $ 167.6 | $ 154.1 |
Accounts Receivable, Allowance for Credit Loss, Current | (1.4) | (1.4) |
Unbilled Receivables, Current | 9.1 | 7.2 |
Income Taxes Receivable, Current | 10.6 | 6.1 |
Other Receivables, Net, Current | 2.9 | 1.4 |
Receivables, net of allowance for current expected credit losses of $1.4 at December 31, 2022 and 2021 | 188.8 | 167.4 |
Inventory, Finished Goods, Gross | 171.9 | 148.0 |
Other Inventory, Supplies, Gross | 111.7 | 100.1 |
Depreciation and amortization | 103.3 | 105.0 | $ 111.0
Asset Retirement Obligation | 1.9 | 2.0 | 3.8
Accretion Expense, Including Asset Retirement Obligations | 0.0 | 0.1 |
Increase (Decrease) in Asset Retirement Obligations | 0.0 | (1.8) | $ 2.5
Asset Retirement Obligation, Cash Paid to Settle | $ (0.1) | $ (0.1) |

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