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COMMITMENTS AND CONTINGENT LIABILITIES (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]        
Letters of credit outstanding $ 7.3      
Loss Contingency Accrual 45.0      
Rental expense 11.4 $ 10.6 $ 13.2  
Future minimum payments to be made under noncancelable operating leases [Abstract]        
2018 11.8      
2019 8.1      
2020 4.4      
2021 1.4      
2022 1.5      
Later years 9.6      
Total 36.8      
Purchase obligations 80.0      
IRS proposed unfavorable tax adjustments 85.0      
Gross unrecognized tax benefits 102.0 $ 120.1 $ 65.1 $ 54.7
Tax impact of unrecognized tax benefits, if reversed 41.0      
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Letters of credit outstanding $ 5.0