Financial Information By Industry Segment And Geographic Area (Information By Industry Segment, Restructuring And Other Charges) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Restructuring and other charges		$ 67	$ 54	$ 252
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Restructuring and other charges		0	7	0
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Restructuring and other charges		0	0	0
Operating Segments [Member] | Printing Papers
Segment Reporting Information [Line Items]
Restructuring and other charges		0	0	0
Corporate | Corporate Segment [Member]
Segment Reporting Information [Line Items]
Restructuring and other charges	[1]	$ 67	$ 47	$ 252

[1] Includes corporate expenses and expenses of $9 million in 2017, $9 million in 2016 and $10 million in 2015, from previously divested businesses.