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Selected Segment Data (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Segment Reporting Information [Line Items] |  |
Net sales: | $ 361.5 | $ 331.7
Operating profit (loss): | (2.1) | (18.2)
Other operating credits and charges, net | 0.2 | 0.8
Gain (loss) on sale or impairment of long-lived assets | (0.1) | (5.5)
General corporate and other expenses, net | (20.1) | (17.8)
Foreign currency gains (losses) | (0.1) | 1.8
Investment income | 4.2 | 4.0
Interest expense, net of capitalized interest | (12.6) | (14.0)
Loss from continuing operations before taxes | (12.4) | (29.7)
Provision (benefit) for income taxes | (1.2) | (6.8)
Income (loss) from continuing operations | (11.2) | (22.9)
OSB [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales: | 149.0 | 132.1
Operating profit (loss): | (0.3) | (9.1)
Siding [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales: | 113.1 | 106.2
Operating profit (loss): | 16.8 | 12.7
Engineered Wood Products [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales: | 48.6 | 48.3
Operating profit (loss): | (2.8) | (5.5)
South America [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales: | 42.4 | 35.3
Operating profit (loss): | 3.1 | 3.6
Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales: | 10.0 | 10.5
Operating profit (loss): | (0.7) | (0.7)
Intersegment elimination [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales: | $ (1.6) | $ (0.7)

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