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	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Charges related to integration and restructuring
Impairments of long-lived assets	$ 0	$ 6	$ 147	$ 1	$ 153
Total charges for integration and restructuring, closures and asset impairments	0	14		2	178
Plum Creek
Charges related to integration and restructuring
Integration and restructuring charges related to Plum Creek	0	6		0	20
Other
Charges related to integration and restructuring
Charges related to closures and other restructuring activities	$ 0	$ 2		$ 1	$ 5

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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Other Closures and Restructuring Costs

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