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Other Financial Assets - Summary of Loans and Receivables (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Loans And Leases Receivables Disclosure [Line Items] |  |
Short-term loans and receivables | ₩ 3,494,717 | ₩ 3,107,397
Long-term loans and receivables | 4,945,990 | 3,546,214
Loans for tuition |  |
Loans And Leases Receivables Disclosure [Line Items] |  |
Short-term loans and receivables Face value | 34,484 | 30,497
Short-term loans and receivables Allowance for doubtful accounts | (5,156) | 0
Short-term loans and receivables Present value discount | (1,084) | (1,007)
Short-term loans and receivables | 28,244 | 29,490
Long-term loans and receivables Face value | 364,685 | 419,684
Long-term loans and receivables Allowance for doubtful accounts | (4,888) | (24,745)
Long-term loans and receivables Present value discount | (35,888) | (35,468)
Long-term loans and receivables | 323,909 | 359,471
Loans for housing |  |
Loans And Leases Receivables Disclosure [Line Items] |  |
Short-term loans and receivables Face value | 43,171 | 35,560
Short-term loans and receivables Allowance for doubtful accounts | 0 | 0
Short-term loans and receivables Present value discount | 0 | 0
Short-term loans and receivables | 43,171 | 35,560
Long-term loans and receivables Face value | 266,208 | 301,840
Long-term loans and receivables Allowance for doubtful accounts | 0 | 0
Long-term loans and receivables Present value discount | 0 | 0
Long-term loans and receivables | 266,208 | 301,840
Loans for related parties |  |
Loans And Leases Receivables Disclosure [Line Items] |  |
Long-term loans and receivables Face value | 260,227 | 222,014
Long-term loans and receivables Allowance for doubtful accounts | (61,950) | (43,640)
Long-term loans and receivables Present value discount | 0 | 0
Long-term loans and receivables | 198,277 | 178,374
Other loans |  |
Loans And Leases Receivables Disclosure [Line Items] |  |
Short-term loans and receivables Face value | 37,506 | 73,121
Short-term loans and receivables Allowance for doubtful accounts | 0 | (10)
Short-term loans and receivables Present value discount | 0 | 0
Short-term loans and receivables | 37,506 | 73,111
Long-term loans and receivables Face value | 10,833 | 22,883
Long-term loans and receivables Allowance for doubtful accounts | 0 | (12,398)
Long-term loans and receivables Present value discount | 0 | 0
Long-term loans and receivables | 10,833 | 10,485
Loans |  |
Loans And Leases Receivables Disclosure [Line Items] |  |
Short-term loans and receivables Face value | 115,161 | 139,178
Short-term loans and receivables Allowance for doubtful accounts | (5,156) | (10)
Short-term loans and receivables Present value discount | (1,084) | (1,007)
Short-term loans and receivables | 108,921 | 138,161
Long-term loans and receivables Face value | 901,953 | 966,421
Long-term loans and receivables Allowance for doubtful accounts | (66,838) | (80,783)
Long-term loans and receivables Present value discount | (35,888) | (35,468)
Long-term loans and receivables | 799,227 | 850,170
Loans and receivables Face value | 1,017,114 | 1,105,599
Loans and receivables Allowance for doubtful accounts | (71,994) | (80,793)
Loans and receivables Present value discount | (36,972) | (36,475)
Loans and receivables | ₩ 908,148 | ₩ 988,331

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