REVENUE RECOGNITION - Revenue by Major Products (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenue from External Customer
Net sales	$ 1,717	$ 1,681	$ 5,364	$ 5,416
Timberlands
Revenue from External Customer
Net sales	386	357	1,141	1,153
Timberlands | Delivered logs
Revenue from External Customer
Net sales	336	318	1,002	1,025
Timberlands | Stumpage and pay-as-cut timber
Revenue from External Customer
Net sales	22	14	45	38
Timberlands | Recreational and other lease revenue
Revenue from External Customer
Net sales	21	19	59	57
Timberlands | Other
Revenue from External Customer
Net sales	7	6	35	33
Timberlands | West | Delivered logs
Revenue from External Customer
Net sales	169	158	507	539
Timberlands | South | Delivered logs
Revenue from External Customer
Net sales	154	149	460	453
Timberlands | North | Delivered logs
Revenue from External Customer
Net sales	13	11	35	33
Timberlands | Domestic grade sales | West | Delivered logs
Revenue from External Customer
Net sales	100	78	300	269
Timberlands | Export grade sales | West | Delivered logs
Revenue from External Customer
Net sales	69	80	207	270
Real Estate & ENR
Revenue from External Customer
Net sales	103	89	351	305
Real Estate & ENR | Real Estate
Revenue from External Customer
Net sales	65	59	257	220
Real Estate & ENR | Energy and natural resources
Revenue from External Customer
Net sales	38	30	94	85
Wood Products
Revenue from External Customer
Net sales	1,228	1,235	3,872	3,958
Wood Products | Structural lumber
Revenue from External Customer
Net sales	509	451	1,617	1,414
Wood Products | Oriented strand board
Revenue from External Customer
Net sales	167	206	600	749
Wood Products | Engineered solid section
Revenue from External Customer
Net sales	162	175	492	543
Wood Products | Engineered I-joists
Revenue from External Customer
Net sales	85	95	268	301
Wood Products | Softwood plywood
Revenue from External Customer
Net sales	38	38	119	121
Wood Products | Medium density fiberboard
Revenue from External Customer
Net sales	39	42	107	123
Wood Products | Complementary building products
Revenue from External Customer
Net sales	149	158	429	475
Wood Products | Other
Revenue from External Customer
Net sales	$ 79	$ 70	$ 240	$ 232