INCOME TAXES Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	$ 87,600	$ 87,400	$ 80,100	$ 79,600
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	33,300	37,600	34,500
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	1,500	960	1,708
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	21	1,196	3,154
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	7,533	9,571	11,443
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	0	0	(3,176)
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(9,447)	(3,777)	(4,906)
Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation	$ (713)	$ (1,720)	$ (1,471)