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Revenue from Contracts with Customers, Other Income and Relevant Contract Assets and Liabilities - Detail of Revenue Arising from Carried-Forward Contract Liabilities (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of disaggregation of revenue from contracts with customers [abstract] |  |  |
Allocation of the transaction price | ₩ 199,624 | ₩ 213,609 | ₩ 246,843
Deferred revenue of joining/installment fee | 41,451 | 41,824 | 44,204
Total | ₩ 241,075 | ₩ 255,433 | ₩ 291,047

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- References No definition available. + Details
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- Definition The amount of the transaction price allocated to the performance obligations that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties (for example, some sales taxes). [Refer: Performance obligations [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 120 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_120_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Deferred revenue related to contract liabilities. + References No definition available. + Details
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Namespace Prefix: | kt_
Data Type: | xbrli:monetaryItemType
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- Definition Revenue recognized related to contract liabilities. + References No definition available. + Details
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