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Dividends - Dividend for hybrid bond (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Dividend for hybrid bond [Abstract] |  |  |
Amount of hybrid bond | ₩ 4,764,550 | ₩ 4,614,550 | ₩ 4,014,550
Minimum Interest rate | 2.88% | 2.88% | 2.88%
Maximum Interest rate | 5.40% | 5.40% | 5.40%
Dividends | ₩ 197,932 | ₩ 176,945 | ₩ 189,672

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- References No definition available. + Details
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Namespace Prefix: | shg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | shg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | shg_DividendsPaidHybridBonds
Namespace Prefix: | shg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | shg_MaximumInterestRateOfHybridBond
Namespace Prefix: | shg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | shg_MinimumInterestRateOfHybridBond
Namespace Prefix: | shg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant