Financial Information By Industry Segment And Geographic Area (Information By Industry Segment, Assets) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Assets		$ 33,345	$ 30,531
Operating Segments [Member] | Industrial Packaging
Segment Reporting Information [Line Items]
Assets		14,565	14,483
Operating Segments [Member] | Global Cellulose Fibers
Segment Reporting Information [Line Items]
Assets		3,789	983
Operating Segments [Member] | Printing Papers
Segment Reporting Information [Line Items]
Assets		3,958	3,713
Operating Segments [Member] | Consumer Packaging
Segment Reporting Information [Line Items]
Assets		1,736	2,115
Corporate and other (b) | Corporate and other (b)
Segment Reporting Information [Line Items]
Assets	[1]	$ 9,297	$ 9,237

[1] Includes corporate assets and assets of businesses held for sale.