CHARGES FOR INTEGRATION AND RESTRUCTURING, CLOSURES AND ASSET IMPAIRMENTS Items Included in Our Integration and Restructuring, Closure and Asset Impairment Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Charges related to integration and restructuring
Termination benefits			$ 8
Impairments of long-lived assets	$ 147	$ 2	147	$ 2
Total charges for integration and restructuring, closures and impairments	151	14	164	125
Plum Creek
Charges related to integration and restructuring
Termination benefits	0	3	6	48
Acceleration of share-based compensation and pension related benefits related to qualifying terminations	0	2	0	26
Professional services	2	0	5	39
Other integration and restructuring costs	0	3	3	5
Total integration and restructuring charges related to our merger with Plum Creek	2	8	14	118
Other
Charges related to integration and restructuring
Termination benefits	1	3	2	3
Other closures and restructuring costs	1	1	1	2
Total charges for integration and restructuring, closures and impairments	$ 2	$ 4	$ 3	$ 5