Equity - Summary Of Changes In The accumulated Other Comprehensive Income (Details) - KRW (₩) ₩ in Millions |
12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | ₩ 333,670 | ₩ 18,926 | ₩ (639,206) | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | 273,655 | [1] | 278,593 | [2] | 678,396 | [3] | ||||||
| Reclassification adjustments | (14,591) | (23,165) | 199,365 | |||||||||
| Income tax effect | (80,975) | 59,316 | (219,629) | |||||||||
| Non-controlling interest adjustments | (49,500) | |||||||||||
| Ending balance | 462,259 | 333,670 | 18,926 | |||||||||
| Net gain (loss) on valuation of financial assets at FVTOCI | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | 60,438 | 79,694 | (645,731) | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | (1,671,023) | [1] | (12,498) | [2] | 783,583 | [3] | ||||||
| Reclassification adjustments | (108,699) | (22,704) | 200,309 | |||||||||
| Income tax effect | 459,475 | 15,946 | (258,467) | |||||||||
| Non-controlling interest adjustments | 153,159 | |||||||||||
| Ending balance | ₩ (1,106,650) | ₩ 60,438 | ₩ 79,694 | |||||||||
| Explanation of transfers of cumulative gain or loss within equity of investments in equity instruments designated at fair value through other comprehensive income | The increase (decrease) of financial asset valuation profit or loss at fair value through other comprehensive income are changes due to the period evaluation, and the reclassification adjustments amounting to 1,319 million Won are due to disposal of equity securities at FVTOCI during the period. | The increase(decrease) of financial asset valuation profit or loss at fair value through other comprehensive income are changes due to the period evaluation, and the reclassification adjustments amounting to 53,460 million Won and (10) million Won are due to disposal of equity securities at FVTOCI and equity method investments, respectively during the period. | The increase(decrease) of financial asset valuation profit or loss at fair value through other comprehensive income and non-current assets held for sale are changes due to the period evaluation, and the reclassification adjustments amounting to 86 million Won and (50) million Won are due to disposal of equity securities and non-current assets held for sale, respectively during the period. | |||||||||
| Net gain (loss) on credit risk fluctuation of financial liabilities designated to be measured at FVTPL | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | ₩ 1,348 | ₩ 0 | ||||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | (74) | [1] | 1,831 | [2] | ||||||||
| Reclassification adjustments | 0 | 0 | ||||||||||
| Income tax effect | 0 | (483) | ||||||||||
| Non-controlling interest adjustments | 0 | |||||||||||
| Ending balance | 1,274 | 1,348 | ₩ 0 | |||||||||
| Changes in capital due to equity method | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | (1,886) | 3,471 | 475 | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | (3,534) | [1] | (6,965) | [2] | (1,434) | [3] | ||||||
| Reclassification adjustments | 0 | 0 | 0 | |||||||||
| Income tax effect | 1,198 | 1,608 | 4,430 | |||||||||
| Non-controlling interest adjustments | 0 | |||||||||||
| Ending balance | (4,222) | (1,886) | 3,471 | |||||||||
| Gain (loss) on foreign currency translation of foreign operations | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | 523,780 | 15,579 | (24,202) | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | (122,129) | [1] | 529,531 | [2] | 39,458 | [3] | ||||||
| Reclassification adjustments | 0 | 0 | 0 | |||||||||
| Income tax effect | 5,725 | (21,330) | 323 | |||||||||
| Non-controlling interest adjustments | 9,392 | |||||||||||
| Ending balance | 416,768 | 523,780 | 15,579 | |||||||||
| Gain (loss) on hedges of net investment in foreign operations | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | (149,577) | (34,750) | (20,701) | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | 30,325 | [1] | (156,015) | [2] | (19,088) | [3] | ||||||
| Reclassification adjustments | 0 | 0 | 0 | |||||||||
| Income tax effect | (8,006) | 41,188 | 5,039 | |||||||||
| Non-controlling interest adjustments | 0 | |||||||||||
| Ending balance | (127,258) | (149,577) | (34,750) | |||||||||
| Remeasurement gain (loss) related to defined benefit plan | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | (86,218) | (24,262) | 55,235 | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | (15,458) | [1] | (84,590) | [2] | (108,217) | [3] | ||||||
| Reclassification adjustments | 0 | 0 | 0 | |||||||||
| Income tax effect | 6,778 | 22,634 | 28,720 | |||||||||
| Non-controlling interest adjustments | (2,093) | |||||||||||
| Ending balance | (96,991) | (86,218) | (24,262) | |||||||||
| Gain (loss) on valuation of derivatives designated as cash flow hedges | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | (14,215) | (20,806) | (4,282) | |||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | (320,171) | [1] | 7,299 | [2] | (15,906) | [3] | ||||||
| Reclassification adjustments | 94,108 | (461) | (944) | |||||||||
| Income tax effect | 58,393 | (247) | 326 | |||||||||
| Non-controlling interest adjustments | 37,157 | |||||||||||
| Ending balance | (144,728) | (14,215) | ₩ (20,806) | |||||||||
| Net financial gain(loss) on insurance contract assets(liabilities) | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | 0 | |||||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | [1] | 2,395,876 | ||||||||||
| Reclassification adjustments | 0 | |||||||||||
| Income tax effect | (609,063) | |||||||||||
| Non-controlling interest adjustments | (252,285) | |||||||||||
| Ending balance | 1,534,528 | 0 | ||||||||||
| Net financial gain(loss) on reinsurance contract assets(liabilities) | ||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||
| Beginning balance | 0 | |||||||||||
| Changes in accumulated other comprehensive income [Abstract] | ||||||||||||
| Increase (decrease) | [1] | (20,157) | ||||||||||
| Reclassification adjustments | 0 | |||||||||||
| Income tax effect | 4,525 | |||||||||||
| Non-controlling interest adjustments | 5,170 | |||||||||||
| Ending balance | ₩ (10,462) | ₩ 0 | ||||||||||
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