EMPLOYEE BENEFITS (Details - Components of net periodic benefit cost with respect to pensions and other postretirement benefits) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Pensions
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 6	$ 8
Interest cost	37	48
Expected return on assets	(65)	(62)
Amortization of net loss	10	9
Net periodic benefit cost (credit)	(12)	3
Settlement (credit) charges		(4)
Net benefit cost (credit)		(1)
Pensions | U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	2
Interest cost	34	44
Expected return on assets	(60)	(57)
Amortization of net loss	8	8
Net periodic benefit cost (credit)	(17)	(3)
Settlement (credit) charges		0
Net benefit cost (credit)		(3)
Pensions | Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	6
Interest cost	3	4
Expected return on assets	(5)	(5)
Amortization of net loss	2	1
Net periodic benefit cost (credit)	5	6
Settlement (credit) charges		(4)
Net benefit cost (credit)		$ 2
Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Net benefit cost (credit)	$ 2