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EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS (Tables)
 9 Months Ended
Sep. 30, 2015
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
September 30
 
Nine Months Ended
September 30,
In millions, except per share amounts
2015
 
2014
 
2015
 
2014
Earnings (loss) from continuing operations
$
220

 
$
339

 
$
760

 
$
425

Effect of dilutive securities (a)
—

 
—

 
—

 
—

Earnings (loss) from continuing operations – assuming dilution
$
220

 
$
339

 
$
760

 
$
425

Average common shares outstanding
415.1

 
425.3

 
418.7

 
429.9

Effect of dilutive securities (a)
 
 
 
 
 
 
 
Restricted stock performance share plan
2.4

 
3.3

 
3.2

 
3.7

Stock options
—

 
—

 
—

 
0.1

Average common shares outstanding – assuming dilution
417.5

 
428.6

 
421.9

 
433.7

Basic earnings (loss) from continuing operations per common share
$
0.53

 
$
0.80

 
$
1.81

 
$
0.99

Diluted earnings (loss) from continuing operations per common share
$
0.53

 
$
0.79

 
$
1.80

 
$
0.98

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