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Contingencies (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2012
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Loss Contingencies [Line Items] |  |  |  |
Loss contingency accrual | $ 16.1 | $ 16.8 |  |
Current portion of contingency reserves | (3.4) | (1.3) |  |
Long-term portion of contingency reserves | 12.7 | 15.5 |  |
Reserve for Environmental Costs [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss contingency accrual | 15.9 | 16.6 | $ 13.6 | $ 14.9
Hardboard Siding Reserves |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss contingency accrual | $ 0.2 | $ 0.2 |  |

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- Definition Amount of loss contingency liability. + References Reference 1: 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=25496072&loc=d3e14326-108349 + Details
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- Definition Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer. + References Reference 1: 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=25496072&loc=d3e14326-108349 + Details
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- Definition Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer. + References Reference 1: 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=25496072&loc=d3e14326-108349 + Details
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