Supplementary Financial Statement Information (Plants, Properties And Equipment By Major Classification) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Gross cost	$ 33,746	$ 32,883
Less: Accumulated depreciation	20,074	18,934
Plants, properties and equipment, net	13,672	13,949
Pulp, Paper And Packaging Facilities - Mills [Member]
Property, Plant and Equipment [Line Items]
Gross cost	22,105	23,625
Pulp, Paper And Packaging Facilities - Packaging Plants [Member]
Property, Plant and Equipment [Line Items]
Gross cost	10,163	7,184
Other Plants, Properties And Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross cost	$ 1,478	$ 2,074