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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant, and Equipment (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]      
Depreciation expense for property, plant and equipment $ 84.7 $ 74.9 $ 74.1
Buildings and improvements | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life 10 years    
Buildings and improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life 40 years    
Machinery and equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life 3 years    
Machinery and equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life 15 years    
Software | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life 3 years    
Software | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life 5 years