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Risk Management - Summary of Interest Rate Risk (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of financial instruments by type of interest rate [line items] |  |
Short-term borrowings | ₩ 12,457,853 | ₩ 4,382,218
Long-term borrowings | 2,962,323 | 2,265,624
Floating interest rate [member] |  |
Disclosure of financial instruments by type of interest rate [line items] |  |
Short-term borrowings | 3,154,972 | 391,897
Long-term borrowings | 5,388,073 | 2,405,244
Debt securities | 269,101 | 257,667
Total | ₩ 8,812,146 | ₩ 3,054,808

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