PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Plan [Member]
Defined Benefit Plan Disclosures [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year	$ 250		$ 250
Defined Benefit Plan, Plan Assets, Contributions by Employer			89
Service cost	99	$ 96	198	$ 198
Interest cost	171	150	342	293
Expected return on plan assets	423	435	847	857
Amortization of prior service credit	(5)	(5)	(11)	(10)
Defined Benefit Plan, Amortization of (Gain) Loss	165	200	332	424
Curtailment gain	0	0	0	(19)
Net periodic benefit cost	7	6	14	29
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosures [Line Items]
Service cost	2	2	3	4
Interest cost	7	5	14	11
Defined Benefit Plan, Amortization of (Gain) Loss	(4)	(1)	(8)	(3)
Net periodic benefit cost	$ 5	$ 6	$ 9	$ 12