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VALUATION AND QUALIFYING ACCOUNTS SCHEDULE II (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Allowance for Doubtful Accounts      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 19.5 $ 19.3 $ 8.2
Additions - Charges to Costs and Expenses 6.9 4.9 1.3
Additions - Charged to Other Accounts 0.0 0.0 0.0
Deductions (3.1) (4.7) 9.8
Balance at End of Period 23.3 19.5 19.3
Valuation Allowance of Deferred Tax Assets      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 21.7 39.4 0.1
Additions - Charges to Costs and Expenses 4.6 2.2 20.4
Additions - Charged to Other Accounts 0.0 0.0 18.9
Deductions (2.1) (19.9) 0.0
Balance at End of Period $ 24.2 $ 21.7 $ 39.4