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Revenue from Contracts with Customers and Relevant Contract Assets and Liabilities - Detail explanation of Operating revenue (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [abstract] |  |  |
Mobile services | ₩ 7,013,889 | ₩ 6,936,485 | ₩ 6,805,218
Fixed-line services | 5,056,513 | 4,960,338 | 4,827,015
Fixed-line and VoIP telephone services | 1,378,265 | 1,465,059 | 1,463,553
Broadband Internet access services | 2,504,833 | 2,343,591 | 2,256,188
Data communication services | 1,173,415 | 1,151,689 | 1,107,274
Media and content | 3,099,776 | 2,800,630 | 2,637,691
Financial services | 3,836,589 | 3,661,896 | 3,493,920
Sale of goods | 3,393,646 | 3,532,973 | 3,593,127
Others | 3,833,793 | 3,313,337 | 3,083,676
Total | ₩ 26,234,206 | ₩ 25,205,659 | ₩ 24,440,647

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- Definition The aggregate amount of the entity's revenue and other operating income. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_85&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of revenue arising from the rendering of data services. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of revenue arising from the rendering of internet services. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of revenue arising from the rendering of land line telephone services. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of revenue arising from the rendering of mobile telephone services. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of revenue arising from the rendering of telecommunication services. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of revenue arising from the sale of goods. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Revenue from rendering of financial services. + References No definition available. + Details
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- Definition The amount of revenue arising from the rendering of media and content. + References No definition available. + Details
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- Definition Revenue from rendering of other services + References No definition available. + Details
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