OTHER OPERATING EXPENSE (INCOME), NET - Schedule of Other Operating Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Income and Expenses [Abstract]
Commercial contract settlement	$ 0	$ 0	$ 15	$ 0
Adjustments associated with Spin-Off related balances	3	0	14	0
Collective bargaining agreement ratification bonus	4	0	4	0
Merger and acquisition expense, net	(5)	2	0	18
Loss (gain) on sale of businesses	6	0	3	(5)
Asset impairments and lease modifications	0	2	0	11
Gain on sale of assets	0	(7)	0	(13)
Other income, net	(3)	(3)	(8)	(12)
Other operating expense (income), net	$ 5	$ (6)	$ 28	$ (1)