RETIREMENT BENEFITS PLANS - Benefits Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Total expense (income)			$ 66
Pension plans | United States
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	$ 19	$ 27	37
Interest cost	142	117	70
Expected return on plan assets	(195)	(204)	(223)
Amortization	4	15	36
Total	(30)	(46)	(80)
Settlements, curtailments, and special termination benefits	34	61	65
Total expense (income)	4	15	(15)
Pension plans | Non-United States plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	43	59	72
Interest cost	85	47	40
Expected return on plan assets	(121)	(115)	(120)
Amortization	7	45	71
Total	14	37	63
Settlements, curtailments, and special termination benefits	4	2	17
Total expense (income)	18	39	80
Other postretirement benefits plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service cost	1	1	1
Interest cost	10	7	6
Expected return on plan assets	(1)	(1)	0
Amortization	(17)	(7)	(5)
Total	(7)	0	2
Settlements, curtailments, and special termination benefits	0	0	(1)
Total expense (income)	$ (7)	$ 0	1
Hydraulics Business | Pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Settlements, curtailments, and special termination benefits			$ 13