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Commitments and contingencies - Summary of pending litigations (Details)
₩ in Millions
Dec. 31, 2025
KRW (₩)
Pending litigations [Line Items]  
Number of claim 1,197
Claim amount ₩ 1,409,369
Return of unjust earning  
Pending litigations [Line Items]  
Number of claim 1
Claim amount ₩ 5,027
Loss claim  
Pending litigations [Line Items]  
Number of claim 2 [1]
Claim amount ₩ 73,830 [1]
Loss claim  
Pending litigations [Line Items]  
Number of claim 2 [2]
Claim amount ₩ 36,937 [2]
Others  
Pending litigations [Line Items]  
Number of claim 465
Claim amount ₩ 390,946
Others | Shinhan Bank Co., Ltd. [Member]  
Pending litigations [Line Items]  
Claim amount 164,553
Others | Shinhan Card Co., Ltd. [Member]  
Pending litigations [Line Items]  
Claim amount 13,206
Others | SHINHAN SECURITIES CO., LTD. [Member]  
Pending litigations [Line Items]  
Claim amount 120,534
Others | Shinhan Life Insurance Co., Ltd. [Member]  
Pending litigations [Line Items]  
Claim amount 10,350
Others | Shinhan Capital Co., Ltd. [Member]  
Pending litigations [Line Items]  
Claim amount ₩ 30,864
Loss claim regarding responsibility [Member]  
Pending litigations [Line Items]  
Number of claim 9 [3]
Claim amount ₩ 261,630 [3]
Other trust-related litigations  
Pending litigations [Line Items]  
Number of claim 718 [4]
Claim amount ₩ 640,999 [4]
[1] Following a partial loss in the first trial on February 14, 2025, approximately W 63,200 million was paid. An appeal has been filed and the case is currently pending in the second trial.
[2] Subsequent to the end of the reporting period, a partial loss was decided in the first trial on February 5, 2026, and approximately W 41,500 million was paid. As of December 31, 2025 the Group has recognized litigation provisions of approximately W 40,100 million.
[3] As of the end of the reporting period, there were five cases pending in the court of first instance (claim amount: W 169,930 million) and four cases pending in the court of second instance (claim amount: W 91,700 million). However, subsequent to the reporting period, all cases were concluded through withdrawal of the lawsuits following separate settlements with the plaintiffs.
[4] These lawsuits are related to the trust business of Shinhan Asset Trust Co., Ltd. In the event of a loss, the judgment amount (principal and interest) will be paid from the trust account or can be recovered through a right of indemnity against trust-related parties. Accordingly, the impact on the Group’s own account is expected to be limited.