Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Valuation Allowance [Line Items]
Deferred Income Taxes and Other Assets, Noncurrent	$ 74.8	$ 78.7
Deferred Tax Assets, Goodwill and Intangible Assets	6.9	0.6
Deferred Tax Assets, Undistributed Foreign Earnings	2.0	0.7
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	59.1
Deferred tax assets:
Accrued compensation, principally post-retirement, and other employee benefits	11.0	10.4
Accrued expenses, principally for state income taxes and warranty	4.4	6.1
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	1.5	5.9
Net operating loss and other carryforwards	68.0	70.9
Inventories, principally due to reserves for financial reporting purposes and capitalization for tax purposes	8.2	7.7
Plant and equipment, principally due to differences in depreciation	13.8	17.0
Total gross deferred tax assets	115.8	119.3
Valuation allowance	(39.7)	(39.1)	$ (98.0)
Total deferred tax assets	76.1	80.2
Deferred tax liabilities:
Other liabilities	(2.2)	(2.1)
Total gross deferred tax liabilities	(2.2)	(2.1)
Deferred Tax Liabilities, Net, Classification [Abstract] (Deprecated 2022)
Net deferred tax asset	73.9	78.1
Deferred Income Tax Liabilities, Net	$ (0.9)	$ (0.6)