Income Taxes Reconciliation of deferred taxes (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
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)