INDUSTRY SEGMENT INFORMATION Operating Profit by Industry Segment (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	$ 472	$ 697	$ 1,051	$ 1,209
Earnings (loss) from continuing operations before income taxes and equity earnings	334	490	752	846
Interest expense, net	(122)	(133)	(255)	(268)
Noncontrolling interests/equity earnings adjustment	5	(4)	2	(5)
Corporate expenses, net	3	30	24	39
Corporate special items, net	0	12	0	21
Non-operating pension expense	8	36	18	40
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest expense, net	122	133	255	268
Industrial Packaging
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	507	537	911	974
Global Cellulose Fibers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	(2)	66	30	77
Printing Papers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit	$ (33)	$ 94	$ 110	$ 158

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