RETIREMENT BENEFITS - Defined Contribution Plans and Postemployment Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Postemployment Retirement Benefits
Defined Benefit Plan Disclosure
Actuarial gain	$ 1	$ 1	$ 2	$ 2
Total service-related expense	1	1	2	2
Non-service-related expense	5	2	10	8
Total net expense	6	3	12	10
U.S. plans | Postretirement benefit plans
Defined Benefit Plan Disclosure
Company's contributions for defined contribution plans	138	119	413	356
Total net expense	(4)	(3)	(12)	(10)
Non-U.S. plans | Postretirement benefit plans
Defined Benefit Plan Disclosure
Company's contributions for defined contribution plans	114	98	342	303
Total net expense	$ 1	$ 6	$ 1	$ 13