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Equity - Profit attributable to equity holders of Shinhan Financial Group and earnings per share after factoring in regulatory reserve for loan losses (Details) - KRW (₩) ₩ / shares in Units, ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Profit attributable to equity holders of Shinhan Financial Group and earnings per share after factoring in regulatory reserve for loan losses [Abstract] |  |  |  |
Profit attributable to equity holders of Shinhan Financial Group |  | ₩ 4,971,561 | ₩ 4,450,177 | ₩ 4,368,035
Provision for regulatory reserve for loan losses |  | (268,536) | (512,278) |
Profit attributable to equity holders of Shinhan Financial Group after adjusted for regulatory reserve |  | ₩ 4,703,025 | ₩ 3,937,899 |
Basic earnings loss per share after adjustment for regulatory reserve for loan losses |  | ₩ 9,260 | ₩ 7,779 |
Diluted earnings loss per share after adjustment for regulatory reserve for loan losses | [1] | ₩ 9,260 | ₩ 7,779 |
[1] | Dividends for hybrid bonds are deducted.

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