SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation expense, including amortization of capital leases	$ 26.9	$ 28.5	$ 29.9
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives	15 years