INVENTORIES Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Inventory [Line Items]
Total	$ 416	$ 389
Logs
Inventory [Line Items]
LIFO inventories	19	11
FIFO or moving average cost inventories	28	35
Lumber, plywood, panels and fiberboard
Inventory [Line Items]
LIFO inventories	82	75
Lumber, plywood, panels, fiberboard and engineered wood products
Inventory [Line Items]
FIFO or moving average cost inventories	84	86
Other products
Inventory [Line Items]
LIFO inventories	10	10
FIFO or moving average cost inventories	98	83
Materials and supplies
Inventory [Line Items]
FIFO or moving average cost inventories	$ 95	$ 89