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QUARTERLY FINANCIAL DATA (UNAUDITED) (NARRATIVE) (DETAILS) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
QUARTERLY FINANCIAL DATA (UNAUDITED) [ABSTRACT]                  
Reduction in Employee Related Expenses from Change in Estimate     $ 4.6            
Tax benefit recognized from Advance Pricing Agreement   7.6              
Benefit to Income Taxes from Relase of Uncertain Tax Positions   1.4              
Net Change in Valuation Allowance 1.9               4.4
Benefit to Income Taxes Related to Return to Provision Adjustments 0.1                
Benefit to Income Taxes Related to Restructuring Charges 0.6 0.8 6.5 1.3          
Reduction in Variable Incentive Compensation           2.8      
Impact to Provision for Income Taxes Related to Canadian Revenue Agency         0.4     9.0  
Benefit to Income Taxes Related to IRS Tax Refund Claims           3.0 5.7 2.9  
Benefit to Income Taxes Related to Foreign Earnings Repatriation           $ 1.4