EMPLOYEE BENEFITS (Details - Accumulated benefit obligations for U.S. and non-U.S. pension benefit plans) - Pensions - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 5,091	$ 4,948
Defined benefit pension plan obligations in which the projected benefit obligation was in excess of the related plan assets
Projected benefit obligation	5,091	4,948
Accumulated benefit obligation	5,091	4,948
Fair value of plan assets	4,350	3,843
Defined benefit pension plan obligations in which the accumulated benefit obligation was in excess of the related plan assets
Projected benefit obligation	5,091	4,948
Accumulated benefit obligation	5,091	4,948
Fair value of plan assets	4,350	3,843
Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	1,188	1,215
Defined benefit pension plan obligations in which the projected benefit obligation was in excess of the related plan assets
Projected benefit obligation	1,054	1,121
Accumulated benefit obligation	979	1,016
Fair value of plan assets	596	545
Defined benefit pension plan obligations in which the accumulated benefit obligation was in excess of the related plan assets
Projected benefit obligation	991	1,029
Accumulated benefit obligation	979	1,009
Fair value of plan assets	$ 596	$ 536