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