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INCOME TAXES (NARRATIVE) (DETAILS) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 2 Months Ended | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Feb. 20, 2011 Canada [Member] | Mar. 31, 2011 Canada [Member] | Mar. 31, 2013 United States [Member]
INCOME TAXES [ABSTRACT] |  |  |  |  |
Total deferred tax assets, net of valuation allowance | $ 48.5 |  |  |  |
Valuation allowance on deferred tax assets | 19.0 |  |  |  |
Deferred tax assets, net of valuation allowance and deferred tax liabilities | 45.8 |  |  |  |
Effective income tax rate | 11.40% | 9.90% |  |  |
Significant Change in Unrecognized Tax Benefits Is Reasonably Possible [LineItems] |  |  |  |  |
Tax Adjustments, Settlements, and Unusual Provisions |  |  |  | $ (8.6) |
Income Tax Examination [Line Items] |  |  |  |  |
Income Tax Years under Audit |  |  | 2001 and 2002 |  | 2009 to 2011

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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