RETIREMENT BENEFITS - Defined Contribution Plans and Postemployment Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Postemployment Retirement Benefits
Defined Benefit Plan Disclosure
Net actuarial loss	$ 1	$ 1	$ 1	$ 1
Total service-related expense	1	1	1	1
Non-service-related expense (benefit)	1	(1)	6	4
Total net expense	2	0	7	5
U.S. | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Company's contributions for defined contribution plans	119	106	238	211
Total net expense	(4)	(3)	(7)	(6)
Non-U.S. plans | Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Company's contributions for defined contribution plans	99	91	205	183
Total net expense	$ 5	$ 5	$ 7	$ 13