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Related Party Transactions - Summary of Related Parties Outstanding Balances of Receivables and Payables (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of transactions between related parties [line items] |  |
Payables | ₩ 8,824 |
Trade receivables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 4,572 | ₩ 6,000
Trade receivables [member] | K Bank Inc.[Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 682 | 821
Trade receivables [member] | IGIS Professional Investors Private Investment Real Estate Investment LLC No.395 [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables |  | 4,614
Trade receivables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 2,285 | 565
Trade receivables [member] | Little Big Pictures [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 1,454 |
Trade receivables [member] | K-Realty 11th Real Estate Investment Trust Company [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 151 |
Trade payables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 3,235 |
Trade payables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 3,235 |
Other payables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 3,240 | 5,342
Other payables [member] | K Bank Inc.[Member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 299 | 513
Other payables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 2,932 | 4,829
Other payables [member] | Little Big Pictures [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 9 |
Other payables [member] | K-Realty 11th Real Estate Investment Trust Company [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 8,824 |
Trade Payable [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables |  | 343
Trade Payable [Member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables |  | 343
Other Receivables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 267,929 | 53,275
Other Receivables [member] | K Bank Inc.[Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 258,999 | 51,422
Other Receivables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 2 | ₩ 1,853
Other Receivables [member] | Little Big Pictures [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | 7,645 |
Other Receivables [member] | K-Realty 11th Real Estate Investment Trust Company [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Receviables | ₩ 1,283 |

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