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Revenue from Contracts with Customers and Relevant Contract Assets and Liabilities (Tables)
12 Months Ended
Dec. 31, 2022
Text block [abstract]  
Detail Explanation of Revenue in the consolidated Statement of operations
The Group has recognized the following amounts relating to revenue in the Consolidated Statements of Profit or Loss:
 
(
i
n millions of Korean won)
  
2020
    
2021
    
2022
 
Revenue from contracts with customers
  
23,895,631     
24,712,128     
25,432,727  
Revenue from other sources
     203,763        185,877        206,128  
Other income (Note 27)
     341,253        307,654        595,351  
    
 
 
    
 
 
    
 
 
 
Total revenue
  
24,440,647     
25,205,659     
26,234,206  
    
 
 
    
 
 
    
 
 
 
Detail Explanation of Operating Revenue
Operating revenues for the years ended December 31, 2020, 2021 and 2022 are as follows:
 
(
i
n millions of Korean won)
  
2020
    
2021
    
2022
 
Mobile services
  
6,805,218     
6,936,485     
7,013,889  
Fixed-line services
     4,827,015        4,960,338        5,056,513  
Fixed-line and VoIP telephone services
     1,463,553        1,465,059        1,378,265  
Broadband Internet access services
     2,256,188        2,343,591        2,504,833  
Data communication services
     1,107,274        1,151,689        1,173,415  
Media and content
     2,637,691        2,800,630        3,099,776  
Financial services
     3,493,920        3,661,896        3,836,589  
Sale of goods
     3,593,127        3,532,973        3,393,646  
Others
     3,083,676        3,313,337        3,833,793  
    
 
 
    
 
 
    
 
 
 
Total
  
24,440,647     
25,205,659     
26,234,206  
    
 
 
    
 
 
    
 
 
 
Detail Analysis of Contract with Customer Assets and Liabilities
The contract assets and liabilities recognized in relation to the revenues from contracts with customers are as follows:
 
(
i
n millions of Korean won)
  
December 31,
2021
    
December 31,
2022
 
Contract assets
1
  
821,901     
963,133  
Contract liabilities
1
        360,098           344,869  
Deferred revenue
2
  
81,136     
81,653  
 
  1
The Group recognized contract assets of
160,880 million and contract liabilities of
60,762 million for long term construction contracts as at December 31, 2022 (2021: contract assets of
76,816 million and contract liabilities of
36,447 million). The Group recognizes contract assets as trade and other receivables, and contract liabilities as other current liabilities.
 
  2
Deferred revenue recognized relating to government grant is excluded.
Detail Analysis of Contract Costs Recognized as Assets
The contract costs recognized as assets are as follows:
 
(
i
n millions of Korean won)
  
2020
    
2021
    
2022
 
Incremental cost of contract establishment
  
  1,726,191     
  1,726,401     
  1,744,096  
Cost of Contract performance
     78,757        74,843        73,582  
Detail of Revenue Arising from Carried-Forward Contract Liabilities
The recognized revenue arising from carried-forward contract liabilities from prior year is as follows:
 
(
i
n millions of Korean won)
  
2020
    
2021
    
2022
 
Allocation of the transaction price
  
251,975     
275,965     
246,843  
Deferred revenue of joining/installment fee
     42,685        42,100        44,204  
    
 
 
    
 
 
    
 
 
 
Total
  
   294,660     
   318,065     
   291,047