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Deferred Revenues (Tables)
 12 Months Ended
Dec. 31, 2021
Deferred income including contract liabilities [abstract]  
Deferred Revenues
Deferred revenue for the years ended December 31, 2020 and 2021 are as follows which included in current and non-current non-financial liabilities in the consolidated statements of financial position:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
           
2020
     
2021
  
                      
           
In millions of won
  
Beginning balance
    ￦          9,201,538        9,868,189  
Increase
               1,310,128        1,149,578  
Recognized as revenue
               (643,477 )       (661,212 ) 
             
 
 
     
 
 
  
Ending balance
    ￦          9,868,189        10,356,555