RETIREMENT BENEFITS - Level 3 Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
U.S.
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	$ 10,441
Plan assets at fair value at year end	9,849	$ 10,441
U.S. | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	5	7
Realized (losses)	0	0
Unrealized gains (losses)	1	0
Purchases, sales, and issuances	(2)	(2)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	4	5
U.S. | Annuity contracts | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	3	3
Realized (losses)	0	0
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	0	0
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	3	3
U.S. | Other investments | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	2	4
Realized (losses)	0	0
Unrealized gains (losses)	1	0
Purchases, sales, and issuances	(2)	(2)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	1	2
Non-U.S.
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	7,396
Plan assets at fair value at year end	7,013	7,396
Non-U.S. | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	235	262
Unrealized gains (losses)	2	6
Purchases, sales, and issuances	3	(33)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	240	235
Non-U.S. | Real assets(1) | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	2	2
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	0	0
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	2	2
Non-U.S. | Annuity contracts | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	2	2
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	0	0
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	2	2
Non-U.S. | Other investments | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at fair value at beginning of year	231	258
Unrealized gains (losses)	2	6
Purchases, sales, and issuances	3	(33)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	$ 236	$ 231