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, 2018	Mar. 31, 2017
Pensions
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8	$ 14
Interest cost	45	47
Expected return on assets	(78)	(70)
Amortization of prior service (credit) cost	1	0
Amortization of net (gain) loss	9	10
Net periodic benefit cost (credit)	(15)	1
Pensions | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	6
Interest cost	41	43
Expected return on assets	(71)	(64)
Amortization of prior service (credit) cost	0	0
Amortization of net (gain) loss	7	7
Net periodic benefit cost (credit)	(21)	(8)
Pensions | Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	8
Interest cost	4	4
Expected return on assets	(7)	(6)
Amortization of prior service (credit) cost	1	0
Amortization of net (gain) loss	2	3
Net periodic benefit cost (credit)	6	9
Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1
Interest cost	2	3
Expected return on assets	0	0
Amortization of prior service (credit) cost	0	0
Amortization of net (gain) loss	0	0
Net periodic benefit cost (credit)	2	4
Postretirement Plans | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	2	2
Expected return on assets	0	0
Amortization of prior service (credit) cost	0	0
Amortization of net (gain) loss	0	0
Net periodic benefit cost (credit)	2	2
Postretirement Plans | Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1
Interest cost	0	1
Expected return on assets	0	0
Amortization of prior service (credit) cost	0	0
Amortization of net (gain) loss	0	0
Net periodic benefit cost (credit)	$ 0	$ 2