EMPLOYEE BENEFITS (Details - Components of net periodic benefit cost) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Pensions
Components of net periodic benefit cost:
Service cost	$ 6	$ 6
Interest cost	25	37
Expected return on assets	(67)	(65)
Amortization of prior service cost (credit)	1
Amortization of net (gain) loss	11	10
Net periodic benefit cost (credit)	(24)	(12)
Pensions | U.S.
Components of net periodic benefit cost:
Service cost	1	1
Interest cost	22	34
Expected return on assets	(61)	(60)
Amortization of prior service cost (credit)	0
Amortization of net (gain) loss	9	8
Net periodic benefit cost (credit)	(29)	(17)
Pensions | Non U.S. Plans
Components of net periodic benefit cost:
Service cost	5	5
Interest cost	3	3
Expected return on assets	(6)	(5)
Amortization of prior service cost (credit)	1
Amortization of net (gain) loss	2	2
Net periodic benefit cost (credit)	5	5
Postretirement Plans
Components of net periodic benefit cost:
Net benefit cost (credit)	$ 2	$ 2