EMPLOYEE BENEFITS (Details - Accumulated benefit obligations for U.S. and non-U.S. pension benefit plans) - Pensions - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
U.S.
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 4,553	$ 5,091
Defined benefit pension plan obligations in which the projected benefit obligation was in excess of the related plan assets
Projected benefit obligation	4,553	5,091
Accumulated benefit obligation	4,553	5,091
Fair value of plan assets	3,840	4,350
Defined benefit pension plan obligations in which the accumulated benefit obligation was in excess of the related plan assets
Projected benefit obligation	4,553	5,091
Accumulated benefit obligation	4,553	5,091
Fair value of plan assets	3,840	4,350
Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	1,125	1,188
Defined benefit pension plan obligations in which the projected benefit obligation was in excess of the related plan assets
Projected benefit obligation	994	1,054
Accumulated benefit obligation	932	979
Fair value of plan assets	594	596
Defined benefit pension plan obligations in which the accumulated benefit obligation was in excess of the related plan assets
Projected benefit obligation	943	991
Accumulated benefit obligation	932	979
Fair value of plan assets	$ 594	$ 596