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Income Taxes Reconciliation of deferred taxes (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Income Tax Disclosure [Abstract] |  |
Accrued liabilities | $ 20.0 | $ 20.0
Deferred Tax Assets, Deferred Expense, Capitalized Research and Development Costs | 14.0 | 0.0
Pension and post-retirement benefits | 1.0 | 4.0
Share-based compensation | 6.0 | 4.0
Benefit of capital loss and NOL carryovers | 6.0 | 7.0
Other | 8.0 | 9.0
Inventory | 9.0 | 8.0
Deferred Tax Liabilities, Leasing Arrangements | 7.0 | 8.0
Valuation Allowance, Amount | (4.0) | (10.0)
Deferred Tax Assets, Net of Valuation Allowance | 67.0 | 50.0
Deferred Tax Assets, Net | 71.0 | 60.0
Property, plant and equipment | (152.0) | (112.0)
Timber and timberlands | 7.0 | 8.0
Installment sale gain deferral | 7.0 | 6.0
Total Deferred Tax Liabilities | (173.0) | (134.0)
Deferred Tax Liabilities, Net | (106.0) | (84.0)
Long-term deferred tax asset | (7.0) | (2.0)
Long-term deferred tax liability | $ (113.0) | $ (86.0)

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