INVENTORIES Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Inventory [Line Items]
Total	$ 389	$ 383
Logs
Inventory [Line Items]
LIFO inventories	16	17
FIFO or moving average cost inventories	21	38
Lumber, plywood, panels and fiberboard
Inventory [Line Items]
LIFO inventories	63	66
Lumber, plywood, panels, fiberboard and engineered wood products
Inventory [Line Items]
FIFO or moving average cost inventories	107	91
Other products
Inventory [Line Items]
LIFO inventories	13	10
FIFO or moving average cost inventories	80	77
Materials and supplies
Inventory [Line Items]
FIFO or moving average cost inventories	$ 89	$ 84