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Acquisitions And Joint Ventures (Pro Forma Information On Consolidated Results Of Operations Related To Acquisitions) (Details) (Temple-Inland Inc. [Member], USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Temple-Inland Inc. [Member]
   
Business Acquisition [Line Items]    
Net sales $ 6,947 $ 7,369
Earnings (loss) from continuing operations 169 [1] 225 [1]
Net earnings (loss) $ 170 [1] $ 270 [1]
Diluted earnings (loss) from continuing operations per common share $ 0.38 [1] $ 0.52 [1]
Diluted net earnings (loss) per common share $ 0.39 [1] $ 0.62 [1]
[1] Attributable to International Paper Company common shareholders.