RETIREMENT BENEFITS PLANS - Employer Contributions to Retirement Benefits Plans (Details) - Pension plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans
Expected future contributions, defined benefit plans	$ 108
Employer contributions to pension plans	116	$ 343	$ 122
United States
Defined Benefit Plans and Other Postretirement Benefit Plans
Expected future contributions, defined benefit plans	23
Employer contributions to pension plans	30	237	18
Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Expected future contributions, defined benefit plans	86
Employer contributions to pension plans	$ 85	$ 106	$ 104