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Intangible assets (Tables) | 12 Months Ended
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Dec. 31, 2025
Disclosure of detailed information about intangible assets [abstract] |
Intangible assets |
| (a) | Details of intangible assets as of December 31, 2024 and 2025 are as follows:
|  | 2024 |  |  | 2025 |
Goodwill |  | W | 4,665,417 |  |  |  | 4,656,673 |
Software |  |  | 235,229 |  |  |  | 251,178 |
Development cost |  |  | 677,572 |  |  |  | 543,993 |
Others |  |  | 541,915 |  |  |  | 441,314 |
|  | W | 6,120,133 |  |  |  | 5,893,158 |
Changes in intangible assets |
| (b) | Changes in intangible assets for the years ended December 31, 2024 and 2025 are as follows:
|  | 2024 |
|  | Goodwill |  |  | Software |  |  | Development cost |  |  | Others |  |  | Total |
Beginning balance |  | W | 4,677,204 |  |  |  | 259,233 |  |  |  | 464,638 |  |  |  | 816,871 |  |  |  | 6,217,946 |
Acquisition |  |  | — |  |  |  | 67,077 |  |  |  | 196,292 |  |  |  | 110,230 |  |  |  | 373,599 |
Disposal and write-off |  |  | — |  |  |  | (2,822 | ) |  |  | (418 | ) |  |  | (8,383 | ) |  |  | (11,623 | )
Amounts transferred from (to) property and equipment |  |  | — |  |  |  | — |  |  |  | (2,302 | ) |  |  | — |  |  |  | (2,302 | )
Amounts transferred within intangible assets |  |  | — |  |  |  | 905 |  |  |  | 165,761 |  |  |  | (166,666 | ) |  |  | — |
Impairment (*1) |  |  | (24,513 | ) |  |  | — |  |  |  | (715 | ) |  |  | (128 | ) |  |  | (25,356 | )
Amortization (*2) |  |  | — |  |  |  | (96,335 | ) |  |  | (179,302 | ) |  |  | (174,341 | ) |  |  | (449,978 | )
Effects of changes in foreign exchange rate |  |  | 12,726 |  |  |  | 7,171 |  |  |  | 33,618 |  |  |  | (35,668 | ) |  |  | 17,847 |
Ending balance |  | W | 4,665,417 |  |  |  | 235,229 |  |  |  | 677,572 |  |  |  | 541,915 |  |  |  | 6,120,133 |
| (*1) | Goodwill impairment incurred from the cash-generating unit of security sector at Shinhan Securities Vietnam Co., Ltd. and other sector at Shinhan Asset Trust Co., Ltd. As a result of the impairment test for goodwill of Shinhan Securities Vietnam Co., Ltd., the Group recognized an impairment loss amounting to W 1,298 million for the carrying amount exceeding the recoverable amount of the CGU. This is due to the decrease in recoverable amounts resulting from the reduced trading volume and trading value on the Vietnamese stock market, caused by the global high interest rate environment and domestic and external economic recessions. In addition, as a result of the impairment test for goodwill of Shinhan Asset Trust Co., Ltd., the Group recognized an impairment loss amounting to W 23,215 million for the carrying amount exceeding the recoverable amount of the CGU. This is due to the decrease in recoverable amounts resulting from the deterioration of the business environment caused by the slowdown in the real estate and construction sectors. The amount of impairment loss recognized is included in the non-operating expenses, of the consolidated statement of comprehensive income.
| (*2) | Included in general administrative expense, other operating expense, and insurance service expense of the consolidated statements of comprehensive income.
|  | 2025 |
|  | Goodwill |  |  | Software |  |  | Development cost |  |  | Others |  |  | Total |
Beginning balance |  | W | 4,665,417 |  |  |  | 235,229 |  |  |  | 677,572 |  |  |  | 541,915 |  |  |  | 6,120,133 |
Acquisition |  |  | — |  |  |  | 108,624 |  |  |  | 82,897 |  |  |  | 96,635 |  |  |  | 288,156 |
Disposal and write-off |  |  | — |  |  |  | (969 | ) |  |  | (180 | ) |  |  | (13,818 | ) |  |  | (14,967 | )
Amounts transferred from (to) property and equipment |  |  | — |  |  |  | — |  |  |  | (7,548 | ) |  |  | — |  |  |  | (7,548 | )
Amounts transferred within intangible assets |  |  | — |  |  |  | (2,252 | ) |  |  | — |  |  |  | — |  |  |  | (2,252 | )
Impairment (*1) |  |  | — |  |  |  | (499 | ) |  |  | — |  |  |  | (297 | ) |  |  | (796 | )
Amortization (*2) |  |  | — |  |  |  | (94,261 | ) |  |  | (210,459 | ) |  |  | (173,974 | ) |  |  | (478,694 | )
Effects of changes in foreign exchange rate |  |  | (8,744 | ) |  |  | 5,306 |  |  |  | 1,711 |  |  |  | (9,147 | ) |  |  | (10,874 | )
Ending balance |  | W | 4,656,673 |  |  |  | 251,178 |  |  |  | 543,993 |  |  |  | 441,314 |  |  |  | 5,893,158 |
| (*1) | Included in the non-operating expenses of the consolidated statement of comprehensive income.
| (*2) | Included in general administrative expense, other operating expense, and insurance service expense of the consolidated statements of comprehensive income.
| (c) | Goodwill
Goodwill allocated in the Group's CGUs |
| i) | Goodwill allocated to the Group’s Cash-Generating Units (CGUs) as of December 31, 2024 and 2025 is as follows:
|  | 2024 |  |  | 2025 |
Banking |  | W | 771,156 |  |  |  | 769,304 |
Credit card |  |  | 2,901,502 |  |  |  | 2,894,610 |
Life insurance |  |  | 850,238 |  |  |  | 850,238 |
Others |  |  | 142,521 |  |  |  | 142,521 |
|  | W | 4,665,417 |  |  |  | 4,656,673 |
Discount rates and terminal growth rates | Discount rates before tax and terminal growth rates applied to each CGU are as follows:
|  | Discount rate before tax (%) |  | Terminal growth rate (%)
Banking |  | 8.4 ~ 15.6 |  | 0.0 ~ 2.0
Credit card |  | 10.0 ~ 15.3 |  | 1.0 ~ 2.0
Others |  | 9.1 ~ 11.2 |  | 1.0
Key assumptions | Key assumptions used in the discounted cash flow calculations of CGUs (other than life insurance components) are as follows:
|  | 2025 |  |  | 2026 |  |  | 2027 |  |  | 2028 |  |  | 2029 |  |  | 2030 |
CPI growth (%) |  |  | 2.1 |  |  |  | 1.7 |  |  |  | 1.8 |  |  |  | 2.1 |  |  |  | 1.9 |  |  |  | 1.9 |
Private consumption growth (%) |  |  | 0.8 |  |  |  | 1.1 |  |  |  | 1.6 |  |  |  | 1.9 |  |  |  | 2.1 |  |  |  | 2.1 |
Real GDP growth (%) |  |  | 0.8 |  |  |  | 1.4 |  |  |  | 1.7 |  |  |  | 2.0 |  |  |  | 2.1 |  |  |  | 2.1 |
Key assumptions used in the discounted cash flow calculations of life insurance (Shinhan Life Insurance Co., Ltd.) components are as follows:
|  | Key assumptions |
Consumer price index growth rate (Bank of Korea) (%) |  |  | 2.0 |
Risk-based confidence level (%) |  |  | 99.5 |
Total recoverable amount and total carrying value of CGUs to which goodwill has been allocated | ii-5) The total recoverable amount and total carrying amount of CGUs to which goodwill has been allocated are as follows:
|  | Amount |
Total recoverable amount |  | W | 63,569,922 |
Total carrying amount |  |  | 55,556,858 |
|  | W | 8,013,064 |

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