REVENUE RECOGNITION - Revenue by Major Products (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from External Customer
Net sales	$ 10,201	$ 7,532	$ 6,554
Timberlands
Revenue from External Customer
Net sales	1,636	1,466	1,618
Timberlands | Delivered logs
Revenue from External Customer
Net sales	1,510	1,345	1,472
Timberlands | Stumpage and pay-as-cut timber
Revenue from External Customer
Net sales	31	19	42
Timberlands | Recreational and other lease revenue
Revenue from External Customer
Net sales	65	63	61
Timberlands | Other
Revenue from External Customer
Net sales	30	39	43
Timberlands | West | Delivered logs
Revenue from External Customer
Net sales	869	720	740
Timberlands | South | Delivered logs
Revenue from External Customer
Net sales	589	573	640
Timberlands | North | Delivered logs
Revenue from External Customer
Net sales	52	52	92
Timberlands | Domestic grade sales | West | Delivered logs
Revenue from External Customer
Net sales	308	329	375
Timberlands | Export grade sales | West | Delivered logs
Revenue from External Customer
Net sales	561	391	365
Real Estate & ENR
Revenue from External Customer
Net sales	344	276	313
Real Estate & ENR | Real Estate
Revenue from External Customer
Net sales	246	202	225
Real Estate & ENR | Energy and natural resources
Revenue from External Customer
Net sales	98	74	88
Wood Products
Revenue from External Customer
Net sales	8,221	5,790	4,623
Wood Products | Structural lumber
Revenue from External Customer
Net sales	3,721	2,602	1,892
Wood Products | Oriented strand board
Revenue from External Customer
Net sales	1,840	1,013	632
Wood Products | Engineered solid section
Revenue from External Customer
Net sales	679	505	510
Wood Products | Engineered I-joists
Revenue from External Customer
Net sales	447	316	323
Wood Products | Softwood plywood
Revenue from External Customer
Net sales	210	171	161
Wood Products | Medium density fiberboard
Revenue from External Customer
Net sales	186	171	166
Wood Products | Complementary building products
Revenue from External Customer
Net sales	790	676	602
Wood Products | Other
Revenue from External Customer
Net sales	$ 348	$ 336	$ 337