RETIREMENT BENEFITS - Level 3 Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
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	$ 13,296
Plan assets at fair value at year end	10,398	$ 13,296
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	29	58
Realized (losses)	(3)	(6)
Unrealized gains (losses)	2	2
Purchases, sales, and issuances	(21)	(25)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	7	29
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	4	1
Realized (losses)	0	0
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	(1)	3
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	3	4
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	25	57
Realized (losses)	(3)	(6)
Unrealized gains (losses)	2	2
Purchases, sales, and issuances	(20)	(28)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	4	25
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	8,657
Plan assets at fair value at year end	6,941	8,657
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	322	319
Unrealized gains (losses)	0	4
Purchases, sales, and issuances	(60)	(1)
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	262	322
Non-U.S. | Real estate | 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	5
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	0	(3)
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	318	312
Unrealized gains (losses)	0	4
Purchases, sales, and issuances	(60)	2
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at year end	$ 258	$ 318