Other Operating Credits and Charges, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Gain Contingencies [Line Items]
Adjustments related to prior year inventory	$ (4.8)			$ (1.6)	$ (1.5)				$ (4.8)	$ 0	$ 0
Inventory adjustment									1.6	1.5	0
Adjustment related to prior year depreciation									1.6	0	0
Adjustment related to product related warranty reserves									(17.7)	1.8	0
Refundable value added tax receivable		1.4							1.4	0	0
Insurance Recoveries	1.5	0.4							1.9	0	0
Adjustment to contingent consideration fair value	3.2	17.3							20.5	0	0
Additions to workers compensation reserves		1.0							(1.0)	0	0
Termination indemnities in South America										1.6
Adjustments to retirement accounts									0	(3.8)	0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments									0	2.2	0
Addition to environmental related contingency reserves									(1.0)	0	(0.9)
Reductions, net of additions, to product related contingency reserves									0	5.0	11.5
Product Warranty Accrual, Period Increase (Decrease)									(17.7)	1.8	0.4
Timber related reserves									0	0.8	1.5
Other Cost and Expense, Operating									0.1	0.6	(1.3)
Other operating income (expense), net	(12.9)	16.1	(5.4)	(1.6)	4.1	(1.2)	(0.2)	0.2	(3.8)	2.9	11.2
Siding
Gain Contingencies [Line Items]
Product Warranty Accrual, Period Increase (Decrease)						(1.0)				(1.0)
OSB Siding
Gain Contingencies [Line Items]
Product Warranty Accrual, Period Increase (Decrease)										(0.8)
Hardboard Siding Reserves
Gain Contingencies [Line Items]
Product Warranty Accrual, Period Increase (Decrease)										3.6
Abitibi [Domain]
Gain Contingencies [Line Items]
Other Operating Credits and Charges Associated with Unconsolidated Affiliates			1.8						(1.8)	0	0
Canfor-LP
Gain Contingencies [Line Items]
Other Operating Credits and Charges Associated with Unconsolidated Affiliates			0.9						(0.9)	0	0
Unconsolidated Affiliates
Gain Contingencies [Line Items]
Other Operating Credits and Charges Associated with Unconsolidated Affiliates									(2.7)	0	0
Supplemental employee retirement plans, defined benefit
Gain Contingencies [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments					$ 2.2					$ 2.2