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Revenue from Contracts with Customers 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, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [abstract] |  |  |
Allocation of the transaction price | ₩ 251,975 | ₩ 266,478 | ₩ 183,905
Deferred revenue of joining/installment fee | 42,685 | 44,032 | 39,975
Others |  |  | 1,536
Total | ₩ 294,660 | ₩ 310,510 | ₩ 225,416

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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 [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2020-01-01 -Paragraph 120 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&anchor=para_120_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Deferred revenue related to contract liabilities. + References No definition available. + Details
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- Definition Revenue recognized related to contract liabilities. + References No definition available. + Details
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- Definition Revenue recognized related to contract liabilities others. + References No definition available. + Details
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