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Income Tax Expense - Schedule of Changes in Deferred Income Tax Assets (Liabilities) (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax assets, start of period | ₩ 5,660 | ₩ 1,719
Increase (decrease) | 292 | 3,941
Deferred tax assets, end of period | 5,952 | 5,660
Deferred tax liabilities, start of period | (2,832) | 0
Increase (decrease) | 450 | (2,832)
Deferred tax liabilities, end of period | (2,382) | (2,832)
Property and equipment |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 38 | 34
Increase (decrease) | 13 | 4
Deferred tax liability (asset) end of period | 51 | 38
Intangible assets |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 442 | 398
Increase (decrease) | 223 | 44
Deferred tax liability (asset) end of period | 665 | 442
Other non-current assets |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 202 | 530
Increase (decrease) | (177) | (328)
Deferred tax liability (asset) end of period | 25 | 202
Accounts payables |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 1,701 | 1,404
Increase (decrease) | (183) | 297
Deferred tax liability (asset) end of period | 1,518 | 1,701
Accrued expenses |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 233 | 192
Increase (decrease) | 49 | 41
Deferred tax liability (asset) end of period | 282 | 233
Deferred revenue |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 94 | 311
Increase (decrease) | 261 | (217)
Deferred tax liability (asset) end of period | 355 | 94
Allowance for doubtful account |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 299 | 367
Increase (decrease) | 880 | (68)
Deferred tax liability (asset) end of period | 1,179 | 299
Other non-current liabilities |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 81 | 75
Increase (decrease) | 1 | 6
Deferred tax liability (asset) end of period | 82 | 81
Lease |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | (30) | (43)
Increase (decrease) | (8) | 13
Deferred tax liability (asset) end of period | (38) | (30)
Investments in subsidiaries |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | (2,791) | (3,759)
Increase (decrease) | 423 | 968
Deferred tax liability (asset) end of period | (2,368) | (2,791)
Others |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | (278) | (2)
Increase (decrease) | 1,160 | (276)
Deferred tax liability (asset) end of period | 882 | (278)
Sub Total |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | (9) | (494)
Increase (decrease) | 2,642 | 485
Deferred tax liability (asset) end of period | 2,633 | (9)
Deferred tax due to carry-forward deficits |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 759 | 135
Increase (decrease) | (58) | 624
Deferred tax liability (asset) end of period | 701 | 759
Deferred tax due to tax credit carry-forward |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start of period | 2,078 | 2,078
Increase (decrease) | (1,842) | 0
Deferred tax liability (asset) end of period | ₩ 236 | ₩ 2,078

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- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2023-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph o -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_o&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 56 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_56&doctype=Standard -URIDate 2023-03-23 + Details
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