INCOME TAXES - THE RECONCILIATION OF THE U.S. FEDERAL STATUTORY TAX RATE TO THE EFFECTIVE RATE (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory U.S. federal income tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	2.30%	0.70%	(0.10%)
Federal benefit of R&D and foreign tax credits	15.80%	(2.00%)	1.00%
US other permanent differences	(0.056)	0.008	(0.001)
Tax effect of international operations	4.70%	0.40%	1.40%
Global Intangible Low Taxed Income (GILTI)	(10.90%)	3.70%	(1.10%)
Foreign Derived Intangible Income (FDII)	9.90%	(0.10%)	0.00%
Net effect of tax audit activity	(6.90%)	0.40%	(1.00%)
Tax effect of enacted statutory rate changes on Non-U.S. jurisdictions	(0.20%)	0.10%	0.30%
Federal tax on unremitted earnings of certain foreign subsidiaries	(4.60%)	0.10%	(0.10%)
Valuation allowance adjustments	(12.90%)	(1.30%)	(5.70%)
U.S. tax reform - net impacts	0	0	0.004
Tax effect of impairment of goodwill and intangibles	(51.00%)	(0.20%)	(22.20%)
Other	0.10%	0.20%	0.70%
Effective income tax rate on operations	(38.30%)	23.80%	(5.50%)