INVENTORIES Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Total	$ 393	$ 389
Logs
Inventory [Line Items]
LIFO inventories	21	11
FIFO or moving average cost inventories	20	35
Lumber, plywood, panels and fiberboard
Inventory [Line Items]
LIFO inventories	73	75
Lumber, plywood, panels, fiberboard and engineered wood products
Inventory [Line Items]
FIFO or moving average cost inventories	86	86
Other products
Inventory [Line Items]
LIFO inventories	14	10
FIFO or moving average cost inventories	83	83
Materials and supplies
Inventory [Line Items]
FIFO or moving average cost inventories	$ 96	$ 89