LEASES - Other Information (Details) $ in Millions  | 
3 Months Ended | 
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| 
 Mar. 31, 2019  
USD ($) 
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| Leases [Abstract] | |
| Operating cash flows used by operating leases | $ 7.4 | 
| Operating leases | $ 0.7 | 
| Weighted Average Remaining Lease Term | 6 years 6 months | 
| Weighted Average Discount Rate (as a percent) | 4.40% | 
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- References No definition available. 
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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