Other Operating Credits and Charges, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 OSB Mills Construction Related Legal Reserves [Member]	Mar. 31, 2012 OSB Mills Construction Related Legal Reserves [Member]	Jun. 30, 2011 OSB Mills Construction Related Legal Reserves [Member]	Jun. 30, 2012 OSB Mills Construction Related Legal Reserves [Member]	Jun. 30, 2011 OSB Mills Construction Related Legal Reserves [Member]
Gain Contingencies [Line Items]
Reversal of severance	$ (0.2)	$ 0		$ (0.5)	$ 0		$ (0.3)
Construction related legal reserves						0	0.5	0	0.5	0
Addition to environmental reserves	0	(0.9)		0	(0.9)
Timber related reserves	0	1.5		0	1.5
Settlement of legal claim	0	0	0.8	0	0.8
Other Operating Income (Expense), Net	$ (0.2)	$ 0.6		$ 0	$ 1.4

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.

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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+ Details