PENSION AND OTHER POSTRETIREMENT BENEFITS - Changes in Level 3 Fair Value (Details) - Level 3 - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Direct private investments | U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 1,293	$ 1,284
Relating to assets still held at year-end	16	(34)
Relating to assets sold during the year	61	159
Purchases	101	131
Sales and settlements	(134)	(247)
Fair value of plan assets at end of year	1,337	1,293
Real estate properties | U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	977	1,005
Relating to assets still held at year-end	(14)	(115)
Relating to assets sold during the year	0	0
Purchases	10	88
Sales and settlements	(1)	(1)
Fair value of plan assets at end of year	972	977
Private funds | Non-U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	74	36
Relating to assets still held at year-end	7	3
Relating to assets sold during the year	(7)	1
Purchases	19	39
Sales and settlements	(15)	(5)
Fair value of plan assets at end of year	78	74
Real estate funds | Non-U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	16	130
Relating to assets still held at year-end	0	0
Relating to assets sold during the year	0	(3)
Purchases	0	0
Sales and settlements	(14)	(111)
Fair value of plan assets at end of year	2	16
Insurance buy-in contracts | Non-U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	1,605	950
Relating to assets still held at year-end	(215)	68
Relating to assets sold during the year	0	0
Purchases	0	587
Sales and settlements	0	0
Fair value of plan assets at end of year	$ 1,390	$ 1,605