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Contingency Reserves (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Loss Contingencies [Line Items] |  |
Loss contingency accrual | $ 14.8 | $ 15.3
Current portion of contingency reserves | (2.0) | (2.0)
Long-term portion of contingency reserves | 12.8 | 13.3
Environmental reserves [Member] |  |
Loss Contingencies [Line Items] |  |
Loss contingency accrual | 14.5 | 14.9
Hardboard Siding Reserves [Member] |  |
Loss Contingencies [Line Items] |  |
Loss contingency accrual | $ 0.3 | $ 0.4

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