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Selling and Administrative Expenses - Summary of Selling and Administrative Expenses (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of attribution of expenses by nature to their function [line items] |  |  |
Salaries | ₩ 6,067,385 | ₩ 5,515,166 | ₩ 5,471,459
Retirement benefit expense | 532,199 | 460,302 | 615,370
Welfare and benefit expense | 697,964 | 695,203 | 695,839
Insurance expense | 161,364 | 147,690 | 127,507
Depreciation | 13,829,464 | 12,864,913 | 12,301,131
Amortization of intangible assets | 163,567 | 163,174 | 156,160
Bad debt expense | 35,232 | 62,808 | 23,634
Commission | 856,953 | 801,768 | 771,947
Advertising expense | 43,564 | 39,161 | 44,291
Training expense | 26,067 | 23,964 | 22,140
Vehicle maintenance expense | 18,634 | 18,172 | 21,024
Publishing expense | 5,607 | 6,160 | 6,746
Business promotion expense | 5,314 | 5,082 | 6,538
Rent expense | 230,832 | 206,556 | 234,119
Telecommunication expense | 19,326 | 17,519 | 17,622
Transportation expense | 53,640 | 103,601 | 114,857
Taxes and dues | 723,189 | 687,066 | 676,497
Expendable supplies expense | 57,427 | 54,504 | 56,776
Water, light and heating expense | 57,189 | 57,407 | 77,952
Repairs and maintenance expense | 2,947,956 | 2,774,262 | 2,739,424
Ordinary development expense | 773,931 | 717,561 | 727,810
Travel expense | 93,569 | 93,497 | 95,061
Clothing expense | 20,515 | 19,940 | 21,822
Survey and analysis expense | 5,253 | 5,224 | 5,448
Membership fee | 17,704 | 16,667 | 18,381
Disclosure - Other selling and administrative expenses |  |  |
General and administrative expenses | 3,070,026 | 3,061,582 | 3,009,422
Selling and administrative expense |  |  |
Disclosure of attribution of expenses by nature to their function [line items] |  |  |
Salaries | 1,180,379 | 1,098,460 | 1,142,360
Retirement benefit expense | 104,036 | 89,533 | 109,758
Welfare and benefit expense | 151,840 | 152,836 | 155,781
Insurance expense | 30,460 | 27,726 | 20,835
Depreciation | 231,114 | 241,533 | 244,676
Amortization of intangible assets | 88,920 | 88,648 | 85,661
Bad debt expense | 35,232 | 62,808 | 23,634
Commission | 429,977 | 460,644 | 420,390
Advertising expense | 32,205 | 30,305 | 33,739
Training expense | 8,911 | 7,900 | 7,327
Vehicle maintenance expense | 9,218 | 9,044 | 10,749
Publishing expense | 2,857 | 3,281 | 3,732
Business promotion expense | 2,687 | 2,559 | 3,198
Rent expense | 48,474 | 44,807 | 47,680
Telecommunication expense | 9,406 | 7,813 | 7,945
Transportation expense | 1,108 | 1,099 | 1,012
Taxes and dues | 98,714 | 112,449 | 122,177
Expendable supplies expense | 6,976 | 7,252 | 9,617
Water, light and heating expense | 15,009 | 16,207 | 17,950
Repairs and maintenance expense | 197,942 | 154,062 | 152,449
Ordinary development expense | 217,975 | 217,319 | 213,932
Travel expense | 18,726 | 16,265 | 16,062
Clothing expense | 11,216 | 10,450 | 13,044
Survey and analysis expense | 871 | 1,068 | 1,126
Membership fee | 1,709 | 1,503 | 1,469
Disclosure - Other selling and administrative expenses |  |  |
Accommodation development expenses | 48,902 | 49,988 | 56,038
Miscellaneous wages | 33,020 | 97,474 | 31,910
Litigation and filing expenses | 22,578 | 19,204 | 14,876
Compensation for damages | 7,653 | 4,300 | 3,116
Outsourcing expenses | 1,368 | 3,511 | 3,635
Reward expenses | 2,764 | 2,770 | 2,740
Overseas market development expenses | 1,378 | 1,503 | 1,376
Others | 16,401 | 17,261 | 29,428
Others | 134,064 | 196,011 | 143,119
General and administrative expenses | ₩ 3,070,026 | ₩ 3,061,582 | ₩ 3,009,422

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