XML 45 R31.htm IDEA: XBRL DOCUMENT v3.20.2
EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS (Tables)
 6 Months Ended
Jun. 30, 2020
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 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 amounts2020201920202019
Earnings (loss) attributable to International Paper Company common shareholders$266  $292  $125  $716  
Weighted average common shares outstanding393.1  396.1  392.9  398.3  
Effect of dilutive securities
Restricted performance share plan—  2.1  1.1  3.1  
Weighted average common shares outstanding – assuming dilution393.1  398.2  394.0  401.4  
Basic earnings (loss) per share attributable to International Paper Company Common Shareholders$0.67  $0.74  $0.32  $1.80  
Diluted earnings (loss) per share attributable to International Paper Company Common Shareholders$0.67  $0.73  $0.32  $1.78