BUSINESS SEGMENTS - Additional Financial Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	$ 125	$ 126	$ 250	$ 251
Capital expenditures	107	91	200	170
Operating segments \| Timberlands
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	64	67	129	131
Capital expenditures	19	21	45	52
Operating segments \| Real Estate & ENR
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	4	4	6	7
Capital expenditures	0	0	0	0
Operating segments \| Wood Products
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	55	54	110	110
Capital expenditures	88	63	155	105
Unallocated Items
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	2	1	5	3
Capital expenditures	$ 0	$ 7	$ 0	$ 13