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DEBT (Credit Facilities) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Quarters
Sep. 30, 2013
Revolving Credit Facility [Member]
Sep. 30, 2013
Unsecured Debt [Member]
Revolving Credit Facility [Member]
Dec. 21, 2011
Unsecured Debt [Member]
Revolving Credit Facility [Member]
Dec. 31, 2012
Revolving Credit Facility [Member]
Sep. 30, 2013
Debt Covenant Requirement [Member]
Sep. 30, 2013
Scenario, Actual [Member]
Line of Credit Facility [Line Items]              
Term for Revolving Credit Facility     5 years        
Revolving Credit Facility, maximum borrowing capacity       $ 1,000.0      
Line of Credit Facility, Amount Outstanding 372.0            
Revolving Credit Facility, outstanding balance         $ 0    
Revolving Credit Facility, covenant terms   The Credit Agreement also contains limitations on aggregate subsidiary indebtedness and a debt covenant that requires that the Company maintain on the last day of any period of four consecutive fiscal quarters, in each case taken as one accounting period, a ratio of total debt to consolidated EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) of not more than 3.0 to 1.0.          
Revolving Credit Facility, covenant compliance The Company was in compliance with all covenants in the Credit Agreement as of September 30, 2013.            
Debt covenant, requirement for number of consecutive fiscal quarters 4            
Debt to EBITDA (leverage) ratio 2.09         3 0
Revolving Credit Facility, interest rate at period end   1.23%