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Revenue (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |  |
Rebates accrued | $ 18.7 |  | $ 24.2
Consignment inventory | 19.0 |  | $ 18.3
Revenue by product line and product type | 691.3 | $ 610.9 |
Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 227.0 | 214.0 |
OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 313.3 | 268.4 |
EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 100.7 | 82.1 |
South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 42.4 | 37.8 |
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 7.9 | 8.7 |
Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | (0.1) |
SmartSide Strand siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 171.9 | 162.3 |
SmartSide Strand siding [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 165.1 | 156.1 |
SmartSide Strand siding [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Strand siding [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Strand siding [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 6.8 | 6.2 |
SmartSide Strand siding [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Strand siding [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Fiber siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 25.9 | 28.7 |
SmartSide Fiber siding [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 25.9 | 28.7 |
SmartSide Fiber siding [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Fiber siding [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Fiber siding [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Fiber siding [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
SmartSide Fiber siding [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
CanExel siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 13.9 | 14.3 |
CanExel siding [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 13.9 | 14.3 |
CanExel siding [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
CanExel siding [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
CanExel siding [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
CanExel siding [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
CanExel siding [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
OSB - commodity [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 192.6 | 164.8 |
OSB - commodity [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 8.7 | 12.4 |
OSB - commodity [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 181.1 | 151.3 |
OSB - commodity [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 2.8 | 1.1 |
OSB - commodity [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
OSB - commodity [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
OSB - commodity [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
OSB - value-add [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 177.3 | 146.6 |
OSB - value-add [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 9.2 | 0.0 |
OSB - value-add [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 129.1 | 113.1 |
OSB - value-add [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 4.1 | 2.9 |
OSB - value-add [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 34.9 | 30.6 |
OSB - value-add [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
OSB - value-add [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LVL [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 36.6 | 33.0 |
LVL [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LVL [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LVL [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 36.6 | 33.0 |
LVL [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LVL [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LVL [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LSL [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 13.3 | 10.6 |
LSL [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LSL [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LSL [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 13.3 | 10.6 |
LSL [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LSL [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
LSL [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
I Joist [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 32.1 | 25.7 |
I Joist [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
I Joist [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
I Joist [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 32.1 | 25.7 |
I Joist [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
I Joist [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
I Joist [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Plywood [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 7.6 | 4.8 |
Plywood [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Plywood [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Plywood [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 7.6 | 4.8 |
Plywood [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Plywood [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Plywood [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 20.1 | 20.1 |
Other [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 4.2 | 2.5 |
Other [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 3.1 | 4.0 |
Other [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 4.2 | 4.0 |
Other [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.7 | 1.0 |
Other [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 7.9 | 8.7 |
Other [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | (0.1) |
Commodity [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 200.2 | 169.6 |
Commodity [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 8.7 | 12.4 |
Commodity [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 181.1 | 151.3 |
Commodity [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 10.4 | 5.9 |
Commodity [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Commodity [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Commodity [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Value-add [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 471.0 | 421.2 |
Value-add [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 214.1 | 199.1 |
Value-add [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 129.1 | 113.1 |
Value-add [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 86.1 | 72.2 |
Value-add [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 41.7 | 36.8 |
Value-add [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Value-add [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.0 | 0.0 |
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 20.1 | 20.1 |
Other [Member] | Siding [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 4.2 | 2.5 |
Other [Member] | OSB [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 3.1 | 4.0 |
Other [Member] | EWP [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 4.2 | 4.0 |
Other [Member] | South America [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 0.7 | 1.0 |
Other [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | 7.9 | 8.7 |
Other [Member] | Intersegment [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue by product line and product type | $ 0.0 | $ (0.1) |

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