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Treasury Shares (Tables)
12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Summary of treasury share

Treasury shares as of December 31, 2018 and 2017 are as follows:

 

(In millions of won, except for share data)              
     December 31, 2018      December 31, 2017  

Number of shares(*)

     8,875,883        10,136,551  

Acquisition cost

   1,979,475        2,260,626  

 

 

(*)

The number of treasury shares have decreased by 1,260,668 due to the comprehensive stock exchange transaction with SK Holdings Co., Ltd. (See note 12)