INCOME TAXES - Items Included in Our Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Components of Deferred Tax Assets and Liabilities [Abstract]
Pension and post-employment benefits	$ 102	$ 75
State tax credits	43	42
Depletion	13	14
Environmental Reserves	16	13
Incentive compensation	12	17
Intercompany land sales	18	16
Workers compensation	13	14
Minerals	10	11
Other	77	67
Gross deferred tax assets	304	269
Valuation allowance	(57)	(54)
Net deferred tax assets	247	215
Property, plant and equipment	(294)	(284)
Other	(19)	(19)
Net deferred tax liabilities	(313)	(303)
Net deferred tax liability	$ (66)	$ (88)