PENSION AND OTHER POSTRETIREMENT BENEFITS - Balance Sheet Impact (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Change in plan assets
Postretirement benefit obligations other than pensions	$ (112)	$ (134)
Pension ongoing income—non-service | U.S. Plans
Change in benefit obligation
Benefit obligation at beginning of year	12,792	13,290
Service cost	28	29	$ 86
Interest cost	599	645	380
Plan amendments	0	0
Actuarial (gains) losses	(579)	337
Benefits paid	(1,069)	(1,509)
Settlements and curtailments	0	0
Foreign currency translation	0	0
Other	1	0
Benefit obligation at end of year	11,772	12,792	13,290
Change in plan assets
Fair value of plan assets at beginning of year	16,594	17,005
Actual return on plan assets	1,008	1,070
Company contributions	31	28
Benefits paid	(1,069)	(1,509)
Foreign currency translation	0	0
Other	1
Fair value of plan assets at end of year	16,565	16,594	17,005
Funded status of plans	4,793	3,802
Prepaid pension benefit cost	5,029	4,052
Accrued pension liabilities - current	(28)	(26)
Accrued pension liabilities - noncurrent	(208)	(224)
Net amount recognized	4,793	3,802
Pension ongoing income—non-service | Non-U.S. Plans
Change in benefit obligation
Benefit obligation at beginning of year	4,718	4,400
Service cost	12	11	19
Interest cost	191	200	103
Plan amendments	14	0
Actuarial (gains) losses	(393)	191
Benefits paid	(262)	(250)
Settlements and curtailments	(14)	0
Foreign currency translation	(106)	165
Other	1	1
Benefit obligation at end of year	4,161	4,718	4,400
Change in plan assets
Fair value of plan assets at beginning of year	5,549	5,304
Actual return on plan assets	(111)	267
Company contributions	29	22
Benefits paid	(262)	(250)
Foreign currency translation	(101)	205
Other	1	1
Fair value of plan assets at end of year	5,105	5,549	5,304
Funded status of plans	944	831
Prepaid pension benefit cost	1,431	1,335
Accrued pension liabilities - current	(15)	(15)
Accrued pension liabilities - noncurrent	(472)	(489)
Net amount recognized	944	831
Other Postretirement Benefits
Change in benefit obligation
Benefit obligation at beginning of year	116	133
Service cost	0	0
Interest cost	5	6	5
Plan amendments	0	0
Actuarial (gains) losses	(7)	3
Benefits paid	(16)	(26)
Benefit obligation at end of year	98	116	133
Change in plan assets
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Company contributions	0	0
Benefits paid	0	0
Fair value of plan assets at end of year	0	0	$ 0
Funded status of plans	(98)	(116)
Accrued pension liabilities - current	(11)	(12)
Postretirement benefit obligations other than pensions	(87)	(104)
Net amount recognized	(98)	(116)
Foreign plans excluded from postretirement benefits other than pensions	$ 25	$ 30