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Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 9.7 us-gaap_Goodwill | $ 9.7 us-gaap_Goodwill | $ 0 us-gaap_Goodwill
Intangible Assets | 64.9 us-gaap_IntangibleAssetsCurrent | 68.3 us-gaap_IntangibleAssetsCurrent |
Future Amortization Expense, Year One | 3.3 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths |  |
Future Amortization Expense, Year Two | 3.3 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |  |
Future Amortization Expense, Year Three | 4.1 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |  |
Future Amortization Expense, Year Four | 4.1 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |  |
Future Amortization Expense, Year Five | 4.1 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |  |
Goodwill | 0 us-gaap_GoodwillAcquiredDuringPeriod | 9.7 us-gaap_GoodwillAcquiredDuringPeriod |
Other Intangible Assets |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets | 0.1 us-gaap_IntangibleAssetsCurrent / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 0.1 us-gaap_IntangibleAssetsCurrent / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Timber licenses |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets | 64.8 us-gaap_IntangibleAssetsCurrent / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember | 68.2 us-gaap_IntangibleAssetsCurrent / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember |
Customer Relationships, Gross | $ 111.8 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_LicensingAgreementsMember |  |

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- Definition Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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