OPERATING PROPERTY AND EQUIPMENT, NET - Summary (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Gross	$ 2,139,222	$ 2,142,015
Accumulated depreciation	(1,212,164)	(1,224,216)
Total	927,058	917,799
Land
Property, Plant and Equipment [Line Items]
Gross	243,368	245,034
Buildings and improvements
Property, Plant and Equipment [Line Items]
Gross	926,230	904,567
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross	864,941	866,654
Other
Property, Plant and Equipment [Line Items]
Gross	$ 104,683	$ 125,760
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Minimum | Other
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	40 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years
Maximum | Other
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years