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Gain (loss) on sales or impairment of long lived assets | 12 Months Ended
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Dec. 31, 2012
GAIN (LOSS) ON SALE OF AND IMPAIRMENT OF LONG-LIVED ASSETS, NET [Abstract] |
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] | LOSS ON SALE OR IMPAIRMENT OF LONG-LIVED ASSETS The major components of “Loss on sale or impairment of long-lived assets” in the Consolidated Statements of Income for the years ended December 31 are reflected in the table below and are described in the paragraphs following the table:
Dollar amounts in millions | Year ended December 31,
2012 |  | 2011 |  | 2010
Impairment charges on long-lived assets | $ | (4.4 | ) |  | $ | (74.0 | ) |  | $ | (2.4 | )
Gain (loss) on sale of other long-lived assets | (0.5 | ) |  | 0.1 |  |  | — |
| $ | (4.9 | ) |  | $ | (73.9 | ) |  | $ | (2.4 | )
2012 During 2012, LP recorded a loss on sale of and impairment of long-lived assets of $4.9 million. This net loss includes the following item:
• | a of $4.4 million charge related to the impairment of assets associated with an OSB mill in Quebec, Canada, included in assets held for sale, based upon a change in the plan of their sale of various assets held for sale to reduce their carrying value to the estimated selling price less selling costs.
2011 During 2011, LP recorded a loss on sale of and impairment of long-lived assets of $73.9 million. This net loss includes the following items:
• | a loss of $62.0 million associated with the impairment review of its LSL facility in Houlton, Maine;
• | a loss of $12.0 million associated with assets held and used or held for sale; and
• | a gain of 0.1 million associated with the sale of non-operating sites.
2010 During 2010, LP recorded a loss on sale of and impairment of long-lived assets of $2.4 million. This net loss includes the following items:
• | a loss of $0.9 million associated with the valuation of certain road systems in Canada; and
• | a loss of $1.5 million associated with assets held and used or held for sale.

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- Definition Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section CC -Subsection 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 + Details
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