Income Taxes Reconciliation of deferred taxes (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Accrued liabilities	$ 22.0	$ 21.0
Deferred Tax Assets, Deferred Expense, Capitalized Research and Development Costs	26.0	19.0
Benefit of capital loss and NOL carryovers	9.0	10.0
Deferred revenue	7.0	8.0
Other	13.0	11.0
Inventory	11.0	14.0
Deferred Tax Liabilities, Leasing Arrangements	7.0	8.0
Deferred Tax Liabilities, Investments	0.0	7.0
Deferred Revenue	3.0	3.0
Valuation Allowance, Amount	(10.0)	(4.0)
Deferred Tax Assets, Net of Valuation Allowance	81.0	82.0
Deferred Tax Assets, Net	91.0	86.0
Property, plant and equipment	(192.0)	(194.0)
Deferred Tax Liabilities, Undistributed Foreign Earnings	(19.0)	(21.0)
Installment sale gain deferral	(4.0)	(4.0)
Total Deferred Tax Liabilities	(222.0)	(234.0)
Deferred Tax Liabilities, Net, Total	(141.0)	(152.0)
Long-term deferred tax asset	(4.0)	(11.0)
Long-term deferred tax liability	$ (145.0)	$ (162.0)