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Related Party Transactions - Summary of Significant Transactions with Related Parties (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | ₩ 50,650 | ₩ 41,925 | ₩ 296,186
Purchases | 58,339 | 54,222 | 37,774
K-Realty CR-REITs No.1 [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue |  |  | 238,847
Purchases |  |  | 1,308
HD Hyundai Robotics Co., Ltd.(formerly Hyundai Robotics Co., Ltd.) [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | 78 |  |
Purchases | 182 |  |
K-Realty 11th Real Estate Investment Trust Company [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | 346 | 330 |
Purchases | 2,559 | 1,674 |
K-Realty 11th Real Estate Investment Trust Company [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | 6,216 |  |
Others [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | 21,308 | 11,964 | 28,092
Purchases | 42,169 | 37,742 | 21,302
Digital Pharm Co., Ltd [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | 1 | 1 |
K Bank [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue | 22,701 | 29,536 | 24,247
Purchases | ₩ 13,429 | 11,007 | 15,164
IGIS Professional Investors Private Investment Real Estate Investment LLC No.395 [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue |  |  | ₩ 5,000
Hyundai Robotics Co., Ltd [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Operating Revenue |  | 94 |
Purchases |  | ₩ 3,799 |

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