PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Net Periodic Cost (Details) - Pension Benefits - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Components of Net Periodic Cost:
Service Cost	$ 1	$ 2
Interest Cost	6	5
Expected Return on Plan Assets	(6)	(5)
Amortization:
Actuarial Loss	1	1
Net Periodic Cost	$ 2	$ 3