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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
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [abstract]
Allocation of the transaction price	₩ 213,609	₩ 246,843	₩ 275,965
Deferred revenue of joining/installment fee	41,824	44,204	42,100
Total	₩ 255,433	₩ 291,047	₩ 318,065

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- References

No definition available.

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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]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 120
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_120_a&doctype=Standard
-URIDate 2023-03-23

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- Definition

Deferred revenue related to contract liabilities.

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No definition available.

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- Definition

Revenue recognized related to contract liabilities.

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No definition available.

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