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Other Operating Credits and Charges, Net (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 OSB Mills Construction Related Legal Reserves [Member] | Mar. 31, 2012 OSB Mills Construction Related Legal Reserves [Member] | Sep. 30, 2011 OSB Mills Construction Related Legal Reserves [Member] | Sep. 30, 2012 OSB Mills Construction Related Legal Reserves [Member] | Sep. 30, 2011 OSB Mills Construction Related Legal Reserves [Member]
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Severance | $ (0.2) |  |  |  | $ (0.7) | $ (0.4) | $ (0.2) |  | $ (0.4) | $ (0.7) |
Construction related legal reserves |  |  |  |  |  |  | 0 | 0.5 | (0.5) | 0.5 | (0.5)
Addition to environmental reserves | 0 | 0 | (0.9) |  | 0 | (0.9) |  |  |  |  |
Addition to warranty reserves | 1.0 | 0 |  |  | 1.0 | 0 |  |  |  |  |
Reduction to product related contingenciy reserves | 0 | 10.7 |  |  | 0 | 10.7 |  |  |  |  |
Timber related reserves | 0 | 0 | 1.5 |  | 0 | 1.5 |  |  |  |  |
Settlement of legal claim | 0 | 0 |  | 0.8 | 0 | 0.8 |  |  |  |  |
Other Operating Income (Expense), Net | $ (1.2) | $ 9.8 |  |  | $ (1.2) | $ 11.2 |  |  |  |  |

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- Definition The net proceeds or assets obtained in excess of (less than) the net carrying amount of assets recorded, or assets distributed and liabilities assumed less than (in excess of) estimated litigation liability extinguished, in settlement of a litigation matter. Represents (for other than an insurance entity in its normal claims settlement process), the amount of income (expense) recognized in the period to settle pending or threatened litigation and insurance claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 + Details
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