PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 6	$ 9	$ 17	$ 27
Interest cost	30	27	89	80
Expected return on plan assets	(30)	(40)	(90)	(120)
Amortization of actuarial loss	10	23	29	70
Amortization of prior service cost (credit)	0	1	1	2
Total net periodic benefit cost	16	20	46	59
Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	2	0	4	2
Amortization of actuarial loss	0	1	1	4
Amortization of prior service cost (credit)	0	0	(1)	0
Total net periodic benefit cost	$ 2	$ 1	$ 4	$ 6