Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loss Contingencies [Line Items]
Loss contingency accrual	$ 15.3	$ 14.8
Current portion of contingency reserves	(2.0)	(2.0)
Long-term portion of contingency reserves	13.3	12.8
Reserve for Environmental Costs [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual, Payments	0	1.6	0.8
Loss contingency accrual	14.9	14.1	15.0	14.3
Hardboard Siding Reserves
Loss Contingencies [Line Items]
Loss Contingency Accrual, Payments	0.2	0.4	1.1
Loss contingency accrual	$ 0.4	$ 0.7	$ 6.2	$ 17.8