Contingencies Hardboard Contingencies Rollforward (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2001
Loss Contingency Accrual [Roll Forward]
Beginning Balance	$ 14.8
Adjusted to expense (income) during the year	0	5.0	11.5
Ending Balance	15.3	14.8
Reserve for Environmental Costs [Member]
Loss Contingency Accrual [Roll Forward]
Beginning Balance	14.1	15.0	14.3
Adjusted to expense (income) during the year	1.3	0.7	1.5
Payments for Environmental Liabilities	(0.5)	0	0
Payments made for claims	0	(1.6)	(0.8)
Ending Balance	14.9	14.1	15.0
Hardboard Siding Reserves
Loss Contingency Accrual [Roll Forward]
Beginning Balance	0.7	6.2	17.8
Adjusted to expense (income) during the year	0	(5.0)	(10.7)
Claims reimbursement	0	0	0.6	19.0
Payments made for claims	(0.2)	(0.4)	(1.1)
Payments made for administrative costs	(0.1)	(0.1)	(0.4)
Ending Balance	$ 0.4	$ 0.7	$ 6.2