Sales by Industry Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 7,090	$ 6,655
Industrial Packaging
Segment Reporting Information [Line Items]
Net sales	3,560	3,115
Printing Papers
Segment Reporting Information [Line Items]
Net sales	1,540	1,560
Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	830	810
Distribution
Segment Reporting Information [Line Items]
Net sales	1,385	1,475
Corporate and Intersegment Sales
Segment Reporting Information [Line Items]
Net sales	$ (225)	$ (305)