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LEASES (Additional Information) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Leases [Abstract]    
Weighted-average remaining lease term on operating leases 7 years  
Weighted-average discount rate on operating leases 3.50%  
Operating lease expense $ 7.3 $ 8.1
Variable charges related to operating leases not included in measurement of lease liability 2.2  
Cash paid included in measurement of operating lease liabilities $ 9.9