EMPLOYEE BENEFIT PLANS AND POSTRETIREMENT BENEFITS - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 2	$ 2
Interest cost	13	14
Expected return on assets	(13)	(11)
Amortization of:
Prior service credit	0	0
Actuarial loss (gain)	5	4
Net periodic benefit cost	7	9
Healthcare
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1	1
Interest cost	2	2
Expected return on assets	(1)	(1)
Amortization of:
Prior service credit	(6)	(9)
Actuarial loss (gain)	0	0
Net periodic benefit cost	(4)	(7)
Other
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1	1
Interest cost	1	1
Expected return on assets	0	0
Amortization of:
Prior service credit	0	0
Actuarial loss (gain)	0	0
Net periodic benefit cost	$ 2	$ 2