RETIREMENT BENEFITS PLANS - Benefits Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension plans | United States
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	$ 18	$ 19	$ 27
Interest cost	134	142	117
Expected return on plan assets	(190)	(195)	(204)
Amortization	9	4	15
Total	(29)	(30)	(46)
Settlements, curtailments, and special termination benefits	41	34	61
Total expense (income)	12	4	15
Pension plans | Non-United States plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	46	43	59
Interest cost	85	85	47
Expected return on plan assets	(134)	(121)	(115)
Amortization	11	7	45
Total	8	14	37
Settlements, curtailments, and special termination benefits	7	4	2
Total expense (income)	15	18	39
Other postretirement benefits plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	1	1	1
Interest cost	10	10	7
Expected return on plan assets	(1)	(1)	(1)
Amortization	(13)	(17)	(7)
Total	(3)	(7)	0
Settlements, curtailments, and special termination benefits	0	0	0
Total expense (income)	$ (3)	$ (7)	$ 0