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Revenue from Contracts with Customers and Relevant Contract Assets and Liabilities
12 Months Ended
Dec. 31, 2020
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Revenue from Contracts with Customers and Relevant Contract Assets and Liabilities
26.
Revenue from Contracts with Customers and Relevant Contract Assets and Liabilities
The Group has recognized the following amounts relating to revenue in the Consolidated Statements of Operations:
 
(In millions of Korean won)
  
2018
   
2019
   
2020
 
Revenue from contracts with customers
  
23,012,257   
24,441,122   
23,895,631 
Revenue from other sources
   423,793    458,067    545,016 
  
 
 
   
 
 
   
 
 
 
Total revenue
  
23,436,050   
24,899,189   
24,440,647 
  
 
 
   
 
 
   
 
 
 
Operating revenues for the years ended December 31, 2018, 2019 and 2020 are as follows:
 
(In millions of Korean won)
  
2018
   
2019
   
2020
 
Mobile services
  
6,827,685   
6,795,124   
6,805,218 
Fixed-line services
   4,869,253    4,866,698    4,827,015 
Fixed-line and VoIP telephone services
   1,708,319    1,578,546    1,463,553 
Broadband Internet access services
   2,112,763    2,177,447    2,256,188 
Data communication services
   1,048,171    1,110,705    1,107,274 
Media and content
   2,261,808    2,516,256    2,637,691 
Financial services
   3,444,917    3,641,655    3,493,920 
Sale of goods
   3,288,911    4,194,168    3,593,127 
Others
   2,743,476    2,885,288    3,083,676 
  
 
 
   
 
 
   
 
 
 
Total
  
23,436,050
   
24,899,189
   
24,440,647
 
  
 
 
   
 
 
   
 
 
 
Mobile and fixed-line service
Telecommunication service revenues include mobile and fixed-line(e.g., fixed-line and VoIP telephone, broadband internet access services and data communication services). These services represent a series of distinct services that are considered a separate performance obligations. Service revenue is recognized when services are provided, based upon either usage (e.g., minutes of traffic/bytes of data processed) or period of time (e.g., monthly service fees).
Media and content services
Revenue from media and content services primarily consists of installation fees and basic monthly charges of IPTV and satellite TV services, as well as revenue from digital content distribution, digital music streaming and downloading. Media and contents services revenue are recognized when services are provided, based upon either usage or period of time.
Financial services
Financial services primarily include commissions for merchant fees paid by merchants to credit card companies for processing transactions. Revenue from the commission is recognized when the service obligation is performed.
Sale of goods
Revenue from sale of goods, primarily handsets related to our mobile services is recognized when a performance obligation is satisfied by transferring promised goods to customers.
The contract assets and liabilities recognized in relation to the revenues from contracts with customers are as follows:
 
(In millions of Korean won)
  
December 31,
2019
   
December 31,
2020
 
Contract assets
1
  
655,329   
672,672 
Contract liabilities
1
   413,442    413,707 
Deferred revenue
2
  
92,557   
89,694 
 
 1
The Group recognized contract assets of
86,234 million and contract liabilities of
29,574 million for long term construction contracts as at December 31, 2020 (2019: contract assets of
98,288 million and contract liabilities of
47,832 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.
The contract costs recognized as assets are as follows:
 
(In millions of Korean won)
  
December 31,
2019
   
December 31,
2020
 
Incremental cost of contract establishment
  
1,764,009   
1,726,191 
Cost of Contract performance
   85,234    78,757 
As at December 31, 2020, the Group recognized
1,831,638 million (2019:
1,681,039 million) of operating expenses related to contract cost assets.
The recognized revenue arising from carried-forward contract liabilities from prior year is as follows:
 
(In millions of Korean won)
  
2018
   
2019
   
2020
 
Revenue recognized that was included in the contract liability balance at the beginning of the year
      
Allocation of the transaction price
  
183,905   
266,478   
251,975 
Deferred revenue of joining/installment fee
   39,975    44,032    42,685 
Others
   1,536    —      —   
  
 
 
   
 
 
   
 
 
 
Total
  
225,416   
310,510   
294,660