EMPLOYEE BENEFIT PLANS AND POSTRETIREMENT BENEFITS - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 2	$ 3	$ 4	$ 6
Interest cost	13	7	27	14
Expected return on assets	(11)	(12)	(22)	(24)
Amortization of:
Prior service credit	0	0	0	0
Actuarial loss	5	5	9	10
Net periodic benefit cost	9	3	18	6
Healthcare
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0	1	1	2
Interest cost	2	2	4	3
Expected return on assets	0	(2)	(1)	(3)
Amortization of:
Prior service credit	(9)	(32)	(18)	(63)
Actuarial loss	0	1	0	1
Net periodic benefit cost	(7)	(30)	(14)	(60)
Other
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1	1	2	3
Interest cost	1	0	2	0
Expected return on assets	0	0	0	0
Amortization of:
Prior service credit	0	0	0	0
Actuarial loss	0	0	0	0
Net periodic benefit cost	$ 2	$ 1	$ 4	$ 3