BUSINESS SEGMENTS - Additional Financial Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	$ 130	$ 125	$ 380	$ 376
Capital expenditures	125	97	325	267
Operating segments | Timberlands
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	68	65	197	196
Capital expenditures	37	22	82	74
Operating segments | Real Estate & ENR
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	3	3	9	10
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	56	54	166	164
Capital expenditures	88	72	243	177
Unallocated Items
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation, depletion and amortization	3	3	8	6
Capital expenditures	$ 0	$ 3	$ 0	$ 16