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Earnings Per Share Attributable To International Paper Company Common Shareholders (Note)
12 Months Ended
Dec. 31, 2017
Earnings Per Share, Basic and Diluted [Abstract]  
Earnings Per Share Attributable To International Paper Company Common Shareholders

Basic earnings per share is computed by dividing earnings by the weighted average number of common shares outstanding. Diluted earnings per share is 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 from
continuing operations, and diluted earnings (loss) per share from continuing operations is as follows: 
In millions, except per share amounts
2017
 
2016
 
2015
Earnings (loss) from continuing operations attributable to International Paper common shareholders
$
2,110

 
$
802

 
$
853

Weighted average common shares outstanding
412.7

 
411.1

 
417.4

Effect of dilutive securities:
 
 
 
 
 
Restricted performance share plan
5.0

 
4.5

 
3.2

Weighted average common shares outstanding  – assuming dilution
417.7

 
415.6

 
420.6

Basic earnings (loss) per share from continuing operations
$
5.11

 
$
1.95

 
$
2.05

Diluted earnings (loss) per share from continuing operations
$
5.05

 
$
1.93

 
$
2.03