EMPLOYEE BENEFITS (Details - Accumulated benefit obligations for U.S. and non-U.S. pension benefit plans) - Pensions - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
U.S.
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 4,972	$ 4,553
Defined benefit pension plan obligations in which the projected benefit obligation was in excess of the related plan assets
Projected benefit obligation	4,972	4,553
Fair value of plan assets	4,465	3,840
Defined benefit pension plan obligations in which the accumulated benefit obligation was in excess of the related plan assets
Accumulated benefit obligation	4,972	4,553
Fair value of plan assets	4,465	3,840
Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	1,159	1,125
Defined benefit pension plan obligations in which the projected benefit obligation was in excess of the related plan assets
Projected benefit obligation	1,005	994
Fair value of plan assets	605	594
Defined benefit pension plan obligations in which the accumulated benefit obligation was in excess of the related plan assets
Accumulated benefit obligation	931	932
Fair value of plan assets	$ 605	$ 594