BUSINESS SEGMENTS - Total Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 17,652	$ 16,311
Operating segments | Timberlands and Real Estate & ENR
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	12,737	12,874
Operating segments | Wood Products
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	2,891	2,619
Unallocated Items
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 2,024	$ 818