BUSINESS SEGMENTS - Total Assets (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 16,520	$ 16,536
Operating segments | Timberlands and Real Estate & ENR
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	12,507	12,545
Operating segments | Wood Products
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	3,288	3,116
Unallocated Items
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 725	$ 875