INVENTORIES Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Inventory [Line Items]
Total	$ 451	$ 389
Logs
Inventory [Line Items]
LIFO inventories	15	11
FIFO or moving average cost inventories	58	35
Lumber, plywood, panels and fiberboard
Inventory [Line Items]
LIFO inventories	83	75
Lumber, plywood, panels, fiberboard and engineered wood products
Inventory [Line Items]
FIFO or moving average cost inventories	105	86
Other products
Inventory [Line Items]
LIFO inventories	12	10
FIFO or moving average cost inventories	86	83
Materials and supplies
Inventory [Line Items]
FIFO or moving average cost inventories	$ 92	$ 89