Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 116.1	$ 112.3
Salaries and wages payable	64.1	75.8
Taxes other than income taxes	3.5	3.0
Current portion of warranty reserves	3.0	9.0	$ 9.0
Accrued interest	6.8	6.0
Accrued rebates	30.1	24.2
Other accrued liabilities	9.7	6.8
Total Accounts payable and accrued liabilities	233.3	237.1
Capital Expenditures Incurred but Not yet Paid	$ 22.1	$ 19.0