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Inventories - Summary of Inventories Net (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of inventories [line items] |  |
Inventories | ₩ 988,351 | ₩ 717,673
Merchandise [member] |  |
Disclosure of inventories [line items] |  |
Inventories | 878,912 | 672,738
Others [member] |  |
Disclosure of inventories [line items] |  |
Inventories | 109,439 | 44,935
Gross carrying amount [member] |  |
Disclosure of inventories [line items] |  |
Inventories | 1,090,566 | 813,683
Gross carrying amount [member] | Merchandise [member] |  |
Disclosure of inventories [line items] |  |
Inventories | 981,127 | 768,748
Gross carrying amount [member] | Others [member] |  |
Disclosure of inventories [line items] |  |
Inventories | 109,439 | 44,935
Valuation allowance [member] |  |
Disclosure of inventories [line items] |  |
Inventories | (102,215) | (96,010)
Valuation allowance [member] | Merchandise [member] |  |
Disclosure of inventories [line items] |  |
Inventories | ₩ (102,215) | ₩ (96,010)

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