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Borrowings and Debt Securities - Schedule of Changes in Borrowings and Debt Securities (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Changes In Borrowings and Debt Securities [Line Items] |  |
Beginning balance | ₩ 120,605,365 |
Ending balance | 133,631,830 | ₩ 120,605,365
Borrowings and debt securities |  |
Changes In Borrowings and Debt Securities [Line Items] |  |
Beginning balance | 120,605,365 | 80,529,513
Cash flows | 12,692,924 | 39,193,816
Effect of exchange rate fluctuations | 335,353 | 906,877
Others | (1,812) | (24,841)
Ending balance | ₩ 133,631,830 | ₩ 120,605,365

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