RETIREMENT BENEFITS - Net (Benefit) Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Amortization of unrecognized:
Total net expense	$ 6	$ 6	$ 20	$ 12
U.S. plans | Pension plans
Service-related expense
Service cost	0	0	0	0
Interest cost on benefit obligation	119	124	355	374
Expected return on assets	(150)	(160)	(453)	(481)
Amortization of unrecognized:
Prior service (benefit)	0	0	1	1
Net actuarial loss (gain)	43	39	134	118
Curtailment (gain)			0	0
Settlement loss	0	0	0	0
Total net expense	12	3	37	12
U.S. plans | Postretirement benefit plans
Service-related expense
Service cost	0	0	0	0
Interest cost on benefit obligation	4	4	12	13
Expected return on assets	(3)	(3)	(8)	(10)
Amortization of unrecognized:
Prior service (benefit)	(2)	(2)	(7)	(7)
Net actuarial loss (gain)	(2)	(3)	(7)	(8)
Curtailment (gain)			0	0
Settlement loss	0	0	0	0
Total net expense	(3)	(4)	(10)	(12)
Non-U.S. plans | Pension plans
Service-related expense
Service cost	28	29	87	87
Interest cost on benefit obligation	105	105	323	305
Expected return on assets	(80)	(84)	(249)	(247)
Amortization of unrecognized:
Prior service (benefit)	(1)	(1)	(3)	(4)
Net actuarial loss (gain)	18	20	61	54
Curtailment (gain)			0	(8)
Settlement loss	4	5	6	9
Total net expense	74	74	225	196
Non-U.S. plans | Postretirement benefit plans
Service-related expense
Service cost	0	0	1	1
Interest cost on benefit obligation	25	27	82	79
Expected return on assets	(19)	(20)	(61)	(59)
Amortization of unrecognized:
Prior service (benefit)	(1)	(2)	(5)	(6)
Net actuarial loss (gain)	3	(4)	8	(14)
Curtailment (gain)			0	0
Settlement loss	0	0	0	0
Total net expense	$ 8	$ 1	$ 25	$ 1