Revenue Recognition Disaggregaton of Revenue Table (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Net sales	$ 23,306
North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	14,187
EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	1,355
Brazilian Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	232
European Coated Paperboard
Disaggregation of Revenue [Line Items]
Net sales	359
Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	2,819
North American Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,956
Brazilian Papers
Disaggregation of Revenue [Line Items]
Net sales	978
European Papers
Disaggregation of Revenue [Line Items]
Net sales	1,252
Indian Papers
Disaggregation of Revenue [Line Items]
Net sales	202
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales	212
Subsegments Consolidation Items [Domain]
Disaggregation of Revenue [Line Items]
Net sales	(246)
Industrial Packaging | North American Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	14,187
Industrial Packaging | EMEA Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	1,355
Industrial Packaging | Brazilian Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	232
Industrial Packaging | European Coated Paperboard
Disaggregation of Revenue [Line Items]
Net sales	359
Industrial Packaging | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	15,900
Industrial Packaging | Subsegments Consolidation Items [Domain]
Disaggregation of Revenue [Line Items]
Net sales	(233)
Industrial Packaging | Reportable Geographical Components [Member]
Disaggregation of Revenue [Line Items]
Net sales	15,900
Global Cellulose Fibers | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	2,819
Global Cellulose Fibers | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	2,819
Global Cellulose Fibers | Reportable Geographical Components [Member]
Disaggregation of Revenue [Line Items]
Net sales	2,819
Printing Papers | North American Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,956
Printing Papers | Brazilian Papers
Disaggregation of Revenue [Line Items]
Net sales	978
Printing Papers | European Papers
Disaggregation of Revenue [Line Items]
Net sales	1,252
Printing Papers | Indian Papers
Disaggregation of Revenue [Line Items]
Net sales	202
Printing Papers | Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Net sales	4,375
Printing Papers | Subsegments Consolidation Items [Domain]
Disaggregation of Revenue [Line Items]
Net sales	(13)
Printing Papers | Reportable Geographical Components [Member]
Disaggregation of Revenue [Line Items]
Net sales	4,375
UNITED STATES
Disaggregation of Revenue [Line Items]
Net sales	17,609
UNITED STATES | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales	203
UNITED STATES | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	13,167
UNITED STATES | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	2,336
UNITED STATES | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,903
EMEA
Disaggregation of Revenue [Line Items]
Net sales	3,321
EMEA | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales	(17)
EMEA | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	1,704
EMEA | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	304
EMEA | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	1,330
Pacific Rim and Asia
Disaggregation of Revenue [Line Items]
Net sales	605
Pacific Rim and Asia | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales	39
Pacific Rim and Asia | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	142
Pacific Rim and Asia | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	179
Pacific Rim and Asia | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	245
Americas, other than U.S.
Disaggregation of Revenue [Line Items]
Net sales	1,771
Americas, other than U.S. | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Net sales	(13)
Americas, other than U.S. | Industrial Packaging
Disaggregation of Revenue [Line Items]
Net sales	887
Americas, other than U.S. | Global Cellulose Fibers
Disaggregation of Revenue [Line Items]
Net sales	0
Americas, other than U.S. | Printing Papers
Disaggregation of Revenue [Line Items]
Net sales	$ 897