EMPLOYEE BENEFITS (Details - Projected benefit obligation and the accumulated benefit obligation was in excess of the related plan assets and components of net periodic benefit cost) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pensions
Estimated amount that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year
Prior service credit	$ 2
Aggregate net loss and prior service credit	38
Pension expense and effect of change in pension expense due to change in discount rate or expected long-term rate of return
Increase in expense due to decrease of 100 basis point in discount rate	24
Increase in expense due to decrease of 100 basis point in expected long-term rate of return	45
Decrease in expense due to increase of 100 basis point in discount rate	5
Decrease in expense due to increase of 100 basis point in expected long-term rate of return	45
Pensions | U.S.
Components of net periodic benefit cost:
Service cost	5	$ 11	$ 19
Interest cost	162	166	181
Expected return on assets	(283)	(266)	(292)
Amortization of prior service cost (credit)	0	0	0
Amortization of net (gain) loss	28	26	25
Net periodic benefit cost (credit)	(88)	(63)	(67)
Curtailment (gain) loss	0	0	0
Settlement (Credit)/Charges	0	60	149
Net benefit cost (credit)	(88)	(3)	82
Total recognized in Accumulated other comprehensive income (loss)	(77)	32	(82)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	11	35	(164)
Pensions | Non U.S. Plans
Components of net periodic benefit cost:
Service cost	22	29	31
Interest cost	16	16	21
Expected return on assets	(25)	(24)	(26)
Amortization of prior service cost (credit)	2	0	0
Amortization of net (gain) loss	7	12	7
Net periodic benefit cost (credit)	22	33	33
Curtailment (gain) loss	0	(6)	(6)
Settlement (Credit)/Charges	0	1	2
Net benefit cost (credit)	22	28	29
Total recognized in Accumulated other comprehensive income (loss)	20	87	(101)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(2)	59	(130)
Postretirement Plans
Estimated amount that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year
Prior service credit	3
Postretirement Plans | U.S.
Components of net periodic benefit cost:
Service cost	1	2	2
Interest cost	6	6	7
Expected return on assets	0	0	0
Amortization of prior service cost (credit)	(1)	(1)	(12)
Amortization of net (gain) loss	0	(1)	(1)
Net periodic benefit cost (credit)	6	6	(4)
Curtailment (gain) loss	0	0	(1)
Settlement (Credit)/Charges	0	0	0
Net benefit cost (credit)	6	6	(5)
Total recognized in Accumulated other comprehensive income (loss)	9	(2)	(7)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	3	(8)	(2)
Postretirement Plans | Non U.S. Plans
Components of net periodic benefit cost:
Service cost	1	3	3
Interest cost	2	3	3
Expected return on assets	0	0	0
Amortization of prior service cost (credit)	(2)	(1)	0
Amortization of net (gain) loss	1	1	1
Net periodic benefit cost (credit)	2	6	7
Curtailment (gain) loss	0	(2)	0
Settlement (Credit)/Charges	0	0	0
Net benefit cost (credit)	2	4	7
Total recognized in Accumulated other comprehensive income (loss)	12	9	1
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 10	$ 5	$ (6)