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v3.22.4

Income Taxes - Tax Effects of Significant Temporary Differences Creating Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Deferred Tax Assets, Gross [Abstract] |  |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits | $ 3.2 | $ 3.4 |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits | 12.9 | 18.5 |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation | 3.5 | 6.6 |
Deferred Tax Assets, Inventory | 2.2 | 0.2 |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions | 0.9 | 0.0 |
Deferred Tax Assets, Tax Credit Carryforwards | 10.1 | 13.5 |
Deferred Tax Assets, Operating Loss Carryforwards | 3.3 | 4.1 |
Deferred tax assets, gross | 49.6 | 61.5 |
Deferred Tax Assets, Valuation Allowance | 10.8 | 5.4 |
Deferred Tax Assets, Net of Valuation Allowance | 38.8 | 56.1 |
Deferred Tax Liabilities, Tax Deferred Expense, Compensation and Benefits Pension and Other Postretirement Benefits | 0.0 | (1.5) |
Tax position taken in current year | 68.6 | 0.2 | $ 0.4
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 0.1 | 0.7 | $ 1.9
Deferred tax liabilities: |  |  |
Plant and equipment | (168.3) | (185.5) |
Deferred Tax Liabilities, Leasing Arrangements | (10.8) | (13.8) |
Intangible assets | (1.8) | (2.3) |
Deferred Tax Liabilities, Other | 0.0 | (0.6) |
Deferred Tax Liabilities, Gross | 180.9 | 203.7 |
Deferred Tax Liabilities, Net | 142.1 | 147.6 |
Lease Agreements [Member] |  |  |
Deferred Tax Assets, Gross [Abstract] |  |  |
Deferred Tax Assets, Other | 12.0 | 15.2 |
Other Expense [Member] |  |  |
Deferred Tax Assets, Gross [Abstract] |  |  |
Deferred Tax Assets, Other | $ 1.5 | $ 0.0 |

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- Definition Deferred Tax Liabilities, Tax Deferred Expense, Compensation and Benefits Pension and Other Postretirement Benefits + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 + Details
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