PENSION AND OTHER POSTRETIREMENT BENEFITS - Net Periodic Benefit (Income) Cost Recognized in Other Comprehensive (Income) Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension ongoing income—non-service | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 28	$ 29	$ 86
Interest cost	599	645	380
Expected return on plan assets	(1,125)	(1,111)	(1,281)
Amortization of prior service (credit) cost	(7)	(42)	(42)
Recognition of actuarial (gains) losses	0	0	(14)
Settlements and curtailments	0	0	(2)
Net periodic benefit (income) cost	(505)	(479)	(873)
Actuarial (gains) losses	(462)	378	307
Prior service (credit) cost	0	0	0
Prior service credit recognized during year	7	42	43
Actuarial (gains) losses recognized during year	0	0	15
Foreign currency translation	0	0	0
Total recognized in Other comprehensive (income) loss	(455)	420	365
Total recognized in net periodic benefit (income) cost and Other comprehensive (income) loss	(960)	(59)	(508)
Pension ongoing income—non-service | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	12	11	19
Interest cost	191	200	103
Expected return on plan assets	(301)	(274)	(278)
Amortization of prior service (credit) cost	1	0	0
Recognition of actuarial (gains) losses	126	153	537
Settlements and curtailments	(17)	0	0
Net periodic benefit (income) cost	12	90	381
Actuarial (gains) losses	19	198	294
Prior service (credit) cost	14	0	0
Prior service credit recognized during year	2	0	(1)
Actuarial (gains) losses recognized during year	(126)	(153)	(537)
Foreign currency translation	(1)	17	204
Total recognized in Other comprehensive (income) loss	(92)	62	(40)
Total recognized in net periodic benefit (income) cost and Other comprehensive (income) loss	(80)	152	341
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	5	6	5
Amortization of prior service (credit) cost	(12)	(20)	(42)
Recognition of actuarial (gains) losses	(11)	(13)	(4)
Net periodic benefit (income) cost	(18)	(27)	(41)
Actuarial (gains) losses	(7)	3	(54)
Prior service credit recognized during year	12	20	42
Actuarial (gains) losses recognized during year	11	13	4
Total recognized in Other comprehensive (income) loss	16	36	(8)
Total recognized in net periodic benefit (income) cost and Other comprehensive (income) loss	$ (2)	$ 9	$ (49)