Financial Information By Industry Segment And Geographic Area (Sales By Industry Segment) (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Segment Reporting Information [Line Items]
NET SALES		$ 5,711	$ 5,517	$ 5,383	$ 5,132	$ 5,000	$ 4,864	$ 4,914	$ 4,717	$ 21,743	[1]	$ 19,495	[1]	$ 20,675	[1]
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
NET SALES										15,077		14,226		14,559
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
NET SALES										2,551		1,092		975
Operating Segments [Member] | Printing Papers
Segment Reporting Information [Line Items]
NET SALES										4,157		4,058		4,056
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
NET SALES	[2]									$ (42)		$ 119		$ 1,085

[1] Net sales are attributed to countries based on the location of the seller.

[2] Includes sales of $15 million in 2017, $42 million in 2016 and $931 million in 2015, operating profits (losses) of $0 million in 2017, $(2) million in 2016 and $(62) million in 2015, and corporate special items expense of $9 million in 2017, $9 million in 2016 and $184 million in 2015, from previously divested businesses