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Revenue from Contracts with Customers and Relevant Contract Assets and Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2022
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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 |

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- Definition The explanation of the significant changes in the contract assets and the contract liabilities. [Refer: Contract assets; Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2022-03-24 -Paragraph 118 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_118&doctype=Standard -URIDate 2022-03-24 + Details
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