Financial Information By Industry Segment And Geographic Area (Sales By Industry Segment) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
NET SALES	$ 5,443	$ 5,691	$ 5,714	$ 5,517	$ 5,943	$ 6,051	$ 5,899	$ 5,724	$ 22,365	$ 23,617	$ 23,483
Industrial Packaging [Member]
Segment Reporting Information [Line Items]
NET SALES									14,484	14,944	14,810
Printing Papers [Member]
Segment Reporting Information [Line Items]
NET SALES									5,031	5,720	6,205
Consumer Packaging [Member]
Segment Reporting Information [Line Items]
NET SALES									2,940	3,403	3,435
Corporate And Intersegment Sales [Member]
Segment Reporting Information [Line Items]
NET SALES									$ (90)	$ (450)	$ (967)