Accounts Payable and Accrued Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 58.6	$ 53.8
Salaries and wages payable	21.9	29.3
Taxes other than income taxes	4.4	5.0
Current portion of warranty reserves	12.0	10.0	7.0
Accrued interest	10.3	10.0
Other accrued liabilities	15.0	19.6
Income taxes payable	0.1	0.1
Total Accounts payable and accrued liabilities	$ 122.3	$ 127.8