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EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS (Note)
 9 Months Ended
Sep. 30, 2015
Earnings Per Share [Abstract]  
Earnings Per Share [Note Text Block]
EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS
Basic earnings per common share are computed by dividing earnings by the weighted average number of common shares outstanding. Diluted earnings per common share are computed assuming that all potentially dilutive securities were converted into common shares. 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.