BUSINESS SEGMENTS - Schedule of Total Assets (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 19,243	$ 12,720	$ 13,603
Operating segments | Timberlands and Real Estate & ENR
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	15,608	7,260	7,327
Operating segments | Wood Products
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	1,910	1,541	1,430
Unallocated Items
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 1,725	$ 3,919	$ 4,846