Other Operating Credits and Charges, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Gain Contingencies [Line Items]
Inventory Write-down	$ (1.6)	$ 0
Severance	0
Other Operating Income (Expense), Net	(1.6)	0.2
OSB Mills Construction Related Legal Reserves [Member]
Gain Contingencies [Line Items]
Severance		(0.3)
Construction related legal reserves	$ 0	$ 0.5

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

+ References+ Details

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

+ References

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+ Details