INCOME TAXES - Items Included in Our Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Components Of Deferred Tax Assets And Liabilities [Abstract]
Pension and post-employment benefits	$ 75	$ 96
State tax credits	42	42
Depletion	14	13
Environmental Reserves	13	14
Incentive compensation	17	19
Intercompany land sales	16	15
Workers compensation	14	17
Minerals	11	10
Other reserves	10	14
Other	57	60
Gross deferred tax assets	269	300
Valuation allowance	(54)	(50)
Net deferred tax assets	215	250
Property, plant and equipment	(284)	(258)
Other	(19)	(21)
Net deferred tax liabilities	(303)	(279)
Net deferred tax liability	$ (88)	$ (29)