INCOME TAXES (Effective tax rate reconciliation) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S. Federal statutory rate	21.00%	35.00%	35.00%
State income taxes, net of federal benefit	1.10%	1.00%	(0.30%)
Foreign operations	(3.50%)	(10.20%)	(8.40%)
R&D tax credits	(0.70%)	(0.90%)	(0.60%)
Uncertain tax position adjustments	(0.50%)	(0.50%)	(2.50%)
Deferred tax adjustments - restructuring and rate adjustments	0.00%	(1.20%)	0.30%
Valuation allowance on state and foreign deferred tax	(2.40%)	(1.20%)	2.40%
Purchase of noncontrolling interest	0.00%	(2.30%)	0.00%
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Percent	(1.30%)	(1.90%)	(1.10%)
Realized foreign currency loss impact on effective tax rate	(0.10%)	(1.50%)	0.00%
Other items	0.90%	(1.30%)	(1.00%)
Transition Tax Related to the Tax Cuts and Jobs Act of 2017 effect on percent	0.50%	18.10%	0.00%
Deferred Tax Related to the Tax Cuts and Jobs Act of 2017 effect on percent	(0.30%)	(8.30%)	0.00%
Deduction for Foreign Derived Intangible Income	(2.30%)	0.00%	0.00%
Effective tax rate	12.40%	24.80%	23.80%