BUSINESS SEGMENTS - Reconciliation of Business Segment Information in Consolidated Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting, Revenue Reconciling Item
Net sales to unaffiliated customers	$ 1,763	$ 1,796
Total sales	1,763	1,796
Net contribution (charge) to earnings	165	201
Costs of sales	1,428	1,441
Gross margin	335	355
Selling expenses	23	22
General and administrative expenses	119	120
Other segment items	28	12
Intersegment eliminations
Segment Reporting, Revenue Reconciling Item
Total sales	(152)	(134)
Unallocated items
Segment Reporting, Revenue Reconciling Item
Net sales to unaffiliated customers	0	0
Total sales	(152)	(134)
Net contribution (charge) to earnings	(99)	(67)
Costs of sales	(127)	(122)
Gross margin	(25)	(12)
Selling expenses	1	1
General and administrative expenses	49	49
Other segment items	24	5
Timberlands
Segment Reporting, Revenue Reconciling Item
Total sales	382	387
Timberlands | Operating Segments
Segment Reporting, Revenue Reconciling Item
Net sales to unaffiliated customers	382	387
Total sales	534	521
Net contribution (charge) to earnings	102	80
Costs of sales	409	415
Gross margin	125	106
Selling expenses	0	0
General and administrative expenses	24	25
Other segment items	(1)	1
Timberlands | Intersegment eliminations
Segment Reporting, Revenue Reconciling Item
Total sales	152	134
Real Estate & ENR
Segment Reporting, Revenue Reconciling Item
Total sales	94	107
Real Estate & ENR | Operating Segments
Segment Reporting, Revenue Reconciling Item
Net sales to unaffiliated customers	94	107
Total sales	94	107
Net contribution (charge) to earnings	56	60
Costs of sales	32	41
Gross margin	62	66
Selling expenses	0	0
General and administrative expenses	7	6
Other segment items	(1)	0
Real Estate & ENR | Intersegment eliminations
Segment Reporting, Revenue Reconciling Item
Total sales	0	0
Wood Products
Segment Reporting, Revenue Reconciling Item
Total sales	1,287	1,302
Wood Products | Operating Segments
Segment Reporting, Revenue Reconciling Item
Net sales to unaffiliated customers	1,287	1,302
Total sales	1,287	1,302
Net contribution (charge) to earnings	106	128
Costs of sales	1,114	1,107
Gross margin	173	195
Selling expenses	22	21
General and administrative expenses	39	40
Other segment items	6	6
Wood Products | Intersegment eliminations
Segment Reporting, Revenue Reconciling Item
Total sales	$ 0	$ 0