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Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 548.0 | $ 588.0 | $ 1,133.0 | $ 1,170.0
Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 220.0 | 231.0 | 432.0 | 450.0
OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 204.0 | 199.0 | 424.0 | 407.0
EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 79.0 | 107.0 | 178.0 | 197.0
South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 38.0 | 40.0 | 74.0 | 85.0
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 7.0 | 14.0 | 25.0 | 35.0
Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | (3.0) | $ 0.0 | $ (4.0)
SmartSide Strand siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 212.0 | 204.0 |  |
SmartSide Strand siding [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 207.0 | 200.0 |  |
SmartSide Strand siding [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Strand siding [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Strand siding [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 5.0 | 4.0 |  |
SmartSide Strand siding [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Strand siding [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Fiber siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 11.0 | 25.0 |  |
SmartSide Fiber siding [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 11.0 | 25.0 |  |
SmartSide Fiber siding [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Fiber siding [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Fiber siding [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Fiber siding [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
SmartSide Fiber siding [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
CanExel siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3.0 | 7.0 |  |
CanExel siding [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
CanExel siding [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
CanExel siding [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
CanExel siding [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
CanExel siding [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3.0 |  |  |
CanExel siding [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
OSB - value-add [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 128.0 | 138.0 |  |
OSB - value-add [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
OSB - value-add [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 95.0 | 100.0 |  |
OSB - value-add [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1.0 | 2.0 |  |
OSB - value-add [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 32.0 | 35.0 |  |
OSB - value-add [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
OSB - value-add [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LVL [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 30.0 | 40.0 |  |
LVL [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LVL [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LVL [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 30.0 | 40.0 |  |
LVL [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LVL [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LVL [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LSL [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 9.0 | 14.0 |  |
LSL [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LSL [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LSL [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 9.0 | 14.0 |  |
LSL [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LSL [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
LSL [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 |  |  |
I Joist [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 32.0 | 38.0 |  |
I Joist [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
I Joist [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
I Joist [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 32.0 | 38.0 |  |
I Joist [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
I Joist [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
I Joist [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
OSB - commodity [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 108.0 | 100.0 |  |
OSB - commodity [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 5.0 |  |
OSB - commodity [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 108.0 | 97.0 |  |
OSB - commodity [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 1.0 |  |
OSB - commodity [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
OSB - commodity [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
OSB - commodity [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | (3.0) |  |
Plywood [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3.0 | 6.0 |  |
Plywood [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Plywood [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Plywood [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3.0 | 6.0 |  |
Plywood [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Plywood [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Plywood [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 12.0 |  |  |
Other [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 2.0 |  |  |
Other [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1.0 |  |  |
Other [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 4.0 |  |  |
Other [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1.0 |  |  |
Other [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 4.0 |  |  |
Other [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 |  |  |
Commodity [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 111.0 | 107.0 |  |
Commodity [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 5.0 |  |
Commodity [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 108.0 | 97.0 |  |
Commodity [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3.0 | 7.0 |  |
Commodity [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Commodity [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | 0.0 |  |
Commodity [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 0.0 | (3.0) |  |
Value-add [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 425.0 | 466.0 |  |
Value-add [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 218.0 | 225.0 |  |
Value-add [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 95.0 | 100.0 |  |
Value-add [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 72.0 | 95.0 |  |
Value-add [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 37.0 | 39.0 |  |
Value-add [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3.0 | 7.0 |  |
Value-add [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 0.0 | 0.0 |  |
Other [Member] | Siding [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales |  | 1.0 |  |
Other [Member] | OSB [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales |  | 1.0 |  |
Other [Member] | EWP [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales |  | 5.0 |  |
Other [Member] | South America [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales |  | 1.0 |  |
Other [Member] | Intersegment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales |  | $ 0.0 |  |

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