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Statement of Cash Flows (Tables) | 12 Months Ended
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Dec. 31, 2025
TextBlock 1 [Abstract] |
Changes in Operating Assets and Liabilities |
(a) | Changes in operating assets and liabilities for the years ended December 31, 2023, 2024 and 2025 were as follows:
(in millions of Won) |  | 2023 |  |  | 2024 |  |  | 2025 |
Trade accounts and notes receivable |  | ￦ | (982,726 | ) |  |  | 1,353,908 |  |  |  | (649,384 | )
Other receivables |  |  | 32,827 |  |  |  | (192,707 | ) |  |  | (333,826 | )
Inventories |  |  | 1,312,800 |  |  |  | 914,744 |  |  |  | 487,345 |
Other current assets |  |  | 265,296 |  |  |  | (124,125 | ) |  |  | 148,797 |
Other non-current assets |  |  | (214,331 | ) |  |  | (11,645 | ) |  |  | 189,609 |
Trade accounts and notes payable |  |  | (118,796 | ) |  |  | (376,277 | ) |  |  | (916,576 | )
Other payables |  |  | (301,561 | ) |  |  | 56,936 |  |  |  | 181,355 |
Other current liabilities |  |  | 15,213 |  |  |  | (1,020,242 | ) |  |  | 389,040 |
Provisions |  |  | (318,955 | ) |  |  | (213,235 | ) |  |  | (69,218 | )
Usable and profitable donation assets |  |  | — |  |  |  | 101,557 |  |  |  | — |
Payments of severance benefits |  |  | (263,548 | ) |  |  | (336,189 | ) |  |  | (382,620 | )
Plan assets |  |  | (45,535 | ) |  |  | 27,413 |  |  |  | 143,152 |
Other non-current liabilities |  |  | (468,213 | ) |  |  | 81,703 |  |  |  | 36,119 |
|  | ￦ | (1,087,529 | ) |  |  | 261,841 |  |  |  | (776,207 | )
Changes in Liabilities Arising from Financial Activities |
(b) | Changes in liabilities arising from financing activities for the years ended December 31, 2024 and 2025 were as follows:
| 1) | For the year ended December 31, 2024
(in millions of Won) |  | Liabilities |  |  | Derivatives that hedge borrowings |
|  | Short-term borrowings |  |  | Long-term borrowings |  |  | Dividend payable |  |  | Lease liabilities |
Beginning |  | ￦ | 4,959,280 |  |  |  | 21,011,099 |  |  |  | 3,261 |  |  |  | 924,320 |  |  |  | (129,991 | )
Changes from financing cash flows |  |  | (217,759 | ) |  |  | (1,633,370 | ) |  |  | (844,195 | ) |  |  | (195,367 | ) |  |  | 181,397 |
Effect of changes in foreign exchange rates |  |  | 991,570 |  |  |  | 1,102,079 |  |  |  | 991 |  |  |  | (3,696 | ) |  |  | — |
Changes in fair values |  |  | — |  |  |  | (239,120 | ) |  |  | — |  |  |  | — |  |  |  | (833,973 | )
Loss on bond redemption |  |  | — |  |  |  | 7,063 |  |  |  | — |  |  |  | — |  |  |  | — |
Other changes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in retained earnings |  |  | — |  |  |  | — |  |  |  | 758,124 |  |  |  | — |  |  |  | — |
Decrease in non-controlling interest s |  |  | — |  |  |  | — |  |  |  | 86,001 |  |  |  | — |  |  |  | — |
Interest expenses |  |  | — |  |  |  | 16,525 |  |  |  | — |  |  |  | 48,625 |  |  |  | — |
Increase in right of use asset s |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 132,219 |  |  |  | — |
Ending |  | ￦ | 5,733,091 |  |  |  | 20,264,276 |  |  |  | 4,182 |  |  |  | 906,101 |  |  |  | (782,567 | )
| 2) | For the year ended December 31, 2025
(in millions of Won) |  | Liabilities |  |  | Derivatives that hedge borrowings |
|  | Short-term borrowings |  |  | Long-term borrowings |  |  | Dividend payable |  |  | Lease liabilities |
Beginning |  | ￦ | 5,733,091 |  |  |  | 20,264,276 |  |  |  | 4,182 |  |  |  | 906,101 |  |  |  | (782,567 | )
Changes from financing cash flows |  |  | 2,158,541 |  |  |  | 235,005 |  |  |  | (915,216 | ) |  |  | (143,423 | ) |  |  | 242,154 |
Effect of changes in foreign exchange rates |  |  | (459,675 | ) |  |  | 549,426 |  |  |  | 14 |  |  |  | (131,796 | ) |  |  | — |
Changes in fair values |  |  | — |  |  |  | 1,310 |  |  |  | — |  |  |  | — |  |  |  | (53,809 | )
Other changes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in retained earnings |  |  | — |  |  |  | — |  |  |  | 756,208 |  |  |  | — |  |  |  | — |
Decrease in non-controlling interest s |  |  | — |  |  |  | — |  |  |  | 159,410 |  |  |  | — |  |  |  | — |
Interest expenses |  |  | — |  |  |  | 10,026 |  |  |  | — |  |  |  | 63,416 |  |  |  | — |
Increase in right of use asset s |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 646,356 |  |  |  | — |
Ending |  | ￦ | 7,431,957 |  |  |  | 21,060,043 |  |  |  | 4,598 |  |  |  | 1,340,654 |  |  |  | (594,222 | )
Disclosure of material non cash transactions explanatory |
(c) | Material non-cash transactions for the years ended December 31, 2023, 2024 and 2025 are as follows:
(in millions of Won) |  | 2023 |  |  | 2024 |  |  | 2025 |
Transfer of construction-in-progress to property, plant and equipment and intangible assets |  | ￦ | 3,782,059 |  |  |  | 7,193,949 |  |  |  | 4,816,462 |
Changes in accounts payable related to acquisition of property, plant and equipment and intangible assets |  |  | (113,447 | ) |  |  | (181,188 | ) |  |  | 214,488 |
Retirement of treasury shares |  |  | — |  |  |  | 431,107 |  |  |  | 374,546 |
|  | ￦ | 3,668,612 |  |  |  | 7,443,868 |  |  |  | 5,405,496 |

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