Acquisitions And Joint Ventures (Pro Forma Information On Consolidated Results Of Operations Related To Acquisitions) (Details) (Temple Inland Inc [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Temple Inland Inc [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net sales	$ 28,125
Earnings (loss) from continuing operations	805
Net earnings (loss) (a)	$ 845
Diluted earnings (loss) from continuing operations per share	$ 1.82
Diluted net earnings (loss) per share (a)	$ 1.92