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EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS Footnote
6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Earnings Per Share [Note Text Block]

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. There are no adjustments required to be made to net income for purposes of computing basic and diluted EPS. A reconciliation of the amounts included in the computation of basic earnings (loss) per share, and diluted earnings (loss) per share is as follows: 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
In millions, except per share amounts
2018
 
2017
 
2018
 
2017
Earnings (loss) from continuing operations attributable to International Paper Company common shareholders
$
428

 
$
84

 
$
789

 
$
276

Weighted average common shares outstanding
413.2

 
412.9

 
413.4

 
412.5

Effect of dilutive securities
 
 
 
 
 
 
 
Restricted stock performance share plan
4.5

 
3.5

 
5.4

 
4.2

Weighted average common shares outstanding – assuming dilution
417.7

 
416.4

 
418.8

 
416.7

Basic earnings (loss) per share from continuing operations
$
1.03

 
$
0.20

 
$
1.91

 
$
0.67

Diluted earnings (loss) per common share from continuing operations
$
1.02

 
$
0.20

 
$
1.88

 
$
0.66