INDUSTRY SEGMENT INFORMATION Sales by Industry Segment (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Net sales	$ 5,568	$ 5,901	$ 16,878	$ 17,355
Industrial Packaging
Segment Reporting Information [Line Items]
Net sales	3,820	4,034	11,516	11,883
Global Cellulose Fibers
Segment Reporting Information [Line Items]
Net sales	624	714	1,974	2,083
Printing Papers
Segment Reporting Information [Line Items]
Net sales	1,071	1,102	3,224	3,215
Corporate and Intersegment Sales
Segment Reporting Information [Line Items]
Net sales	$ 53	$ 51	$ 164	$ 174

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration