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EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS (Tables)
 3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
A reconciliation of the amounts included in the computation of earnings (loss) per common share, and diluted earnings (loss) per common share is as follows: 
 
Three Months Ended
March 31,
In millions, except per share amounts
2016
 
2015
Earnings (loss) from continuing operations
$
339

 
$
313

Effect of dilutive securities (a)
—

 
—

Earnings (loss) from continuing operations – assuming dilution
$
339

 
$
313

Average common shares outstanding
410.8

 
421.2

Effect of dilutive securities (a)
 
 
 
Restricted stock performance share plan
3.2

 
2.5

Average common shares outstanding – assuming dilution
414.0

 
423.7

Basic earnings (loss) from continuing operations per common share
$
0.82

 
$
0.74

Diluted earnings (loss) from continuing operations per common share
$
0.82

 
$
0.74

(a)
Securities are not included in the table in periods when antidilutive.