REVENUE RECOGNITION Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 5,901	$ 5,517	$ 17,355	$ 16,032
North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	3,653		10,604
EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	311		1,017
Brazilian Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	57		175
European Coated Paperboard
Disaggregation of Revenue [Line Items]
Net sales	87		265
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	714		2,083
North American Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	492		1,443
Brazilian Papers
Disaggregation of Revenue [Line Items]
Net sales	255		706
European Papers
Disaggregation of Revenue [Line Items]
Net sales	311		932
Indian Papers
Disaggregation of Revenue [Line Items]
Net sales	47		150
United States
Disaggregation of Revenue [Line Items]
Net sales	4,530		13,114
EMEA
Disaggregation of Revenue [Line Items]
Net sales	797		2,472
Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales	143		470
Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales	431		1,299
Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	4,034	3,822	11,883	11,184
Industrial Packaging | North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	3,653		10,604
Industrial Packaging | EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	311		1,017
Industrial Packaging | Brazilian Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	57		175
Industrial Packaging | European Coated Paperboard
Disaggregation of Revenue [Line Items]
Net sales	87		265
Industrial Packaging | United States
Disaggregation of Revenue [Line Items]
Net sales	3,394		9,832
Industrial Packaging | EMEA
Disaggregation of Revenue [Line Items]
Net sales	396		1,275
Industrial Packaging | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales	40		110
Industrial Packaging | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales	204		666
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	714	654	2,083	1,830
Global Cellulose Fibers | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	714		2,083
Global Cellulose Fibers | United States
Disaggregation of Revenue [Line Items]
Net sales	602		1,720
Global Cellulose Fibers | EMEA
Disaggregation of Revenue [Line Items]
Net sales	77		222
Global Cellulose Fibers | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales	35		140
Global Cellulose Fibers | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales	0		1
Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,102	1,039	3,215	3,051
Printing Papers | North American Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	492		1,443
Printing Papers | Brazilian Papers
Disaggregation of Revenue [Line Items]
Net sales	255		706
Printing Papers | European Papers
Disaggregation of Revenue [Line Items]
Net sales	311		932
Printing Papers | Indian Papers
Disaggregation of Revenue [Line Items]
Net sales	47		150
Printing Papers | United States
Disaggregation of Revenue [Line Items]
Net sales	482		1,399
Printing Papers | EMEA
Disaggregation of Revenue [Line Items]
Net sales	328		988
Printing Papers | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales	62		185
Printing Papers | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales	230		643
Operating Segments [Member] | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	4,034		11,883
Operating Segments [Member] | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	714		2,083
Operating Segments [Member] | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,102		3,215
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales	51	$ 2	174	$ (33)
Intersegment Eliminations [Member] | United States
Disaggregation of Revenue [Line Items]
Net sales	52		163
Intersegment Eliminations [Member] | EMEA
Disaggregation of Revenue [Line Items]
Net sales	(4)		(13)
Intersegment Eliminations [Member] | Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales	6		35
Intersegment Eliminations [Member] | Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales	(3)		(11)
Geography Eliminations [Member] | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	4,034		11,883
Geography Eliminations [Member] | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	714		2,083
Geography Eliminations [Member] | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,102		3,215
Subsegments Consolidation Items [Domain]
Disaggregation of Revenue [Line Items]
Net sales	(77)		(194)
Subsegments Consolidation Items [Domain] | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	(74)		(178)
Subsegments Consolidation Items [Domain] | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	$ (3)		$ (16)