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v3.26.1

Selling and Administrative Expenses - Summary of Other Administrative Expenses (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Statement of comprehensive income [Line Items] |  |  |
Wages and salaries | ₩ 4,878,407 | ₩ 4,769,925 | ₩ 4,375,123
Expenses related to post-employment benefits | 264,232 | 246,823 | 206,614
Depreciation | 3,693,288 | 3,530,770 | 3,346,461
Amortization | 465,935 | 453,689 | 498,193
Research & development | 527,179 | 555,560 | 518,409
Vehicles maintenance | 2,444,069 | 2,594,589 | 2,297,544
Total administrative expenses | 3,094,810 | 3,004,478 | 2,651,902
Administrative expenses [member] |  |  |
Statement of comprehensive income [Line Items] |  |  |
Wages and salaries | 1,323,637 | 1,212,005 | 1,156,456
Expenses related to post-employment benefits | 100,701 | 136,211 | 92,667
Other employee benefits | 305,212 | 300,425 | 273,482
Travel | 54,993 | 47,681 | 47,945
Depreciation | 177,151 | 173,507 | 159,836
Amortization | 116,416 | 113,130 | 96,004
Communication | 13,218 | 13,472 | 11,956
Electricity | 17,192 | 15,618 | 12,242
Taxes and public dues | 99,535 | 94,658 | 100,639
Rental | 37,847 | 45,440 | 48,243
Repairs | 11,684 | 16,502 | 17,787
Entertainment | 13,402 | 13,993 | 15,490
Advertising | 95,532 | 102,271 | 107,223
Research & development | 195,255 | 207,557 | 175,167
Service fees | 234,441 | 268,701 | 234,815
Vehicles maintenance | 7,632 | 7,880 | 7,660
Industry association fee | 13,877 | 12,578 | 11,096
Conference | 23,475 | 22,797 | 19,876
Bad debt expenses (reversal) | 168,960 | 134,230 | (17,785)
Others | 84,650 | 65,822 | 81,103
Total administrative expenses | ₩ 3,094,810 | ₩ 3,004,478 | ₩ 2,651,902

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