INDUSTRY SEGMENT INFORMATION Operating Profit by Industry Segment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Business Segment Operating Profits	$ 512	$ 600
Earnings (loss) from continuing operations before income taxes and equity earnings	(16)	418
Interest expense, net	117	133
Noncontrolling interests/equity earnings adjustment	0	(3)
Corporate expenses, net	32	21
Corporate special items, net	33	0
Business special items, net	352	21
Non-operating pension expense	(6)	10
Industrial Packaging
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Business Segment Operating Profits	470	421
Global Cellulose Fibers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Business Segment Operating Profits	(54)	35
Printing Papers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Business Segment Operating Profits	$ 96	$ 144

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