INVENTORIES Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Inventory [Line Items]
Total	$ 445	$ 383
Logs
Inventory [Line Items]
LIFO inventories	19	17
FIFO or moving average cost inventories	64	38
Lumber, plywood, panels, and fiberboard
Inventory [Line Items]
LIFO inventories	76	66
Lumber, plywood, panels and engineered wood products
Inventory [Line Items]
FIFO or moving average cost inventories	109	91
Other products
Inventory [Line Items]
LIFO inventories	16	10
FIFO or moving average cost inventories	77	77
Materials and supplies
Inventory [Line Items]
FIFO or moving average cost inventories	$ 84	$ 84