INVENTORIES Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Inventory [Line Items]
Total	$ 480	$ 416
Logs
Inventory [Line Items]
LIFO inventories	20	19
FIFO or moving average cost inventories	69	28
Lumber, plywood, panels and fiberboard
Inventory [Line Items]
LIFO inventories	89	82
Lumber, plywood, panels, fiberboard and engineered wood products
Inventory [Line Items]
FIFO or moving average cost inventories	92	84
Other products
Inventory [Line Items]
LIFO inventories	14	10
FIFO or moving average cost inventories	99	98
Materials and supplies
Inventory [Line Items]
FIFO or moving average cost inventories	$ 97	$ 95