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Derivatives - Additional Information (Details) ₩ in Millions | Dec. 31, 2025 KRW (₩)
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Derivatives [Abstract] |
Derivative Held As Collateral Deposite | ₩ 1,614,291
Derivative Held As Collateral Security | ₩ 1,550,509

X
- Definition Derivative held as collateral deposite + References No definition available. + Details
Name: | shg_DerivativeHeldAsCollateralDeposite
Namespace Prefix: | shg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Derivative Held As Collateral Security + References No definition available. + Details
Name: | shg_DerivativeHeldAsCollateralSecurity
Namespace Prefix: | shg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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