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Other Financial Assets - Summary of Other Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Other Financial Assets [Line Items] |  |
Current Other financial assets | ₩ 3,107,397 | ₩ 4,286,975
Non-Current Other financial assets | 3,546,214 | 3,336,835
Loans and receivables |  |
Other Financial Assets [Line Items] |  |
Current Other financial assets | 138,161 | 132,061
Non-Current Other financial assets | 850,170 | 881,310
Loans and receivables | Gross amount |  |
Other Financial Assets [Line Items] |  |
Current Other financial assets | 139,178 | 132,890
Non-Current Other financial assets | 966,421 | 968,468
Loans and receivables | Allowance for doubtful accounts |  |
Other Financial Assets [Line Items] |  |
Current Other financial assets | (10) | (13)
Non-Current Other financial assets | (80,783) | (54,824)
Loans and receivables | Present value discount |  |
Other Financial Assets [Line Items] |  |
Current Other financial assets | (1,007) | (816)
Non-Current Other financial assets | (35,468) | (32,334)
Short-term financial instruments |  |
Other Financial Assets [Line Items] |  |
Current Other financial assets | 578,578 | 666,758
Long-term financial instruments |  |
Other Financial Assets [Line Items] |  |
Non-Current Other financial assets | 833,737 | 686,322
Other financial assets |  |
Other Financial Assets [Line Items] |  |
Current Other financial assets | 716,739 | 798,819
Non-Current Other financial assets | ₩ 1,683,907 | ₩ 1,567,632

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