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Risk Management - Summary of Interest Rate Risk (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of financial instruments by type of interest rate [line items] |  |
Short-term borrowings | ₩ 16,446,821 | ₩ 12,457,853
Long-term borrowings | 3,392,831 | 2,962,323
Floating interest rate [member] |  |
Disclosure of financial instruments by type of interest rate [line items] |  |
Short-term borrowings | 4,435,420 | 3,154,972
Long-term borrowings | 7,766,588 | 5,388,073
Debt securities | 305,602 | 269,101
Total | ₩ 12,507,610 | ₩ 8,812,146

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