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Investments in associates (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
BNP Paribas Cardif Life Insurance    
Investments in associates [Line Items]    
Country [1],[2] Korea  
Reporting date [1],[2] September 30  
Ownership [1],[2] 14.99% 14.99%
Shinhan-Neoplux Energy Newbiz Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 31.66% 31.66%
Shinhan-Albatross Tech Investment Fund    
Investments in associates [Line Items]    
Country [2] Korea  
Reporting date [2] November 30  
Ownership [2] 50.00% 50.00%
VOGO Debt Strategy Qualified IV Private    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 20.00% 20.00%
Shinhan-Midas Donga Secondary Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
ShinHan – Soo Young Entrepreneur Investment Fund No.1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.00% 24.00%
Shinhan Praxis K-Growth Global Private Equity Fund    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 14.15% 14.15%
Kiwoom Milestone Professional Private Real Estate Trust 19    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Shinhan Global Healthcare Fund 1    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 4.41% 3.13%
KB NA Hickory Private Special Asset Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 37.50%
Koramco Europe Core Private Placement Real Estate Fund No.2-2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 44.02% 44.02%
Shinhan-Nvestor Liquidity Solution Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.92% 24.92%
Shinhan AIM FoF Fund 1-A    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 25.00% 25.00%
IGIS Global Credit Fund 150-1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 25.00% 25.00%
Nomura-Rifa Private Real Estate Investment Trust 19    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 31.20% 31.20%
Genesis North America Power Company No.1 PEF    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 43.84% 43.84%
SH MAIN Professional Investment Type Private Mixed Asset Investment Trust No.3    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 23.33%
Korea Finance Security Co., Ltd.    
Investments in associates [Line Items]    
Country [1],[2] Korea  
Reporting date [1],[2] September 30  
Ownership [1],[2] 14.91% 14.91%
MIEL Co., Ltd.    
Investments in associates [Line Items]    
Country [4] Korea  
Reporting date [4] December 31  
Ownership [4] 28.77% 28.77%
AIP Transportation Specialized Privately Placed Fund Trust #1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 35.73% 35.73%
Kiwoom-Shinhan Innovation Fund I    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Samchully Midstream Private Placement Special Asset Fund 5-4    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 41.67% 41.67%
MK Ventures-K Clavis Growth Capital Venture Fund 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 26.67% 26.67%
Vestas Qualified Investors Private Real Estate Fund Investment Trust No.37    
Investments in associates [Line Items]    
Country [5] Korea  
Reporting date [5] December 31  
Ownership [5] 60.00% 60.00%
Milestone Private Real Estate Fund 3    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 32.06% 32.06%
Nomura-Rifa Private Real Estate Investment Trust 31    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 31.31% 31.31%
FuturePlay-Shinhan TechInnovation Fund 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Stonebridge Corporate 1st Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 44.12%
Vogo Realty Partners Private Real Estate Fund V    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.64% 21.64%
Korea Credit Bureau    
Investments in associates [Line Items]    
Country [1],[2] Korea  
Reporting date [1],[2] September 30  
Ownership [1],[2] 9.00% 9.00%
Goduck Gangil1 PFV Co., Ltd.    
Investments in associates [Line Items]    
Country [1],[2] Korea  
Reporting date [1],[2] September 30  
Ownership [1],[2] 1.04% 1.04%
SBC PFV Co., Ltd.    
Investments in associates [Line Items]    
Country [1],[2],[6] Korea  
Reporting date [1],[2],[6] September 30  
Ownership [1],[2],[6] 25.00% 25.00%
NH-amundi global infra private fund 16    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
SH BNCT Professional Investment Type Private Special Asset Investment Trust    
Investments in associates [Line Items]    
Country [7] Korea  
Reporting date [7] December 31  
Ownership [7] 72.50% 72.50%
IGIS Real-estate Private Investment Trust No.33    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.18% 40.86%
Goduck Gangil10 PFV Co., Ltd.    
Investments in associates [Line Items]    
Country [1],[2] Korea  
Reporting date [1],[2] September 30  
Ownership [1],[2] 19.90% 19.90%
Fidelis Global Private Real Estate Trust No.2    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 79.63% 79.63%
AIP EURO PRIVATE REAL ESTATE TRUST No. 12    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.70% 28.70%
Shinhan AIM Real Estate Fund No.1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.01% 21.01%
SH Daegu Green Power Cogeneration System Professional Investment Type Private Special Asset Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 22.02% 22.02%
SH Sangju YC Expressway Professional Investment Type Private Special Asset Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.19% 29.19%
SH Global Infrastructure Professional Investment Type Private Special Asset Investment Trust No. 7-2    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 71.43% 71.43%
Korea Omega-Shinhan Project Fund I    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Samsung SRA Real Estate Professional Private 45    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 25.00% 25.00%
IBK Global New Renewable Energy Special Asset Professional Private2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.98% 28.98%
VS Cornerstone Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 41.18%
Kakao-Shinhan 1st TNYT Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 48.62% 48.62%
Pacific Private Placement Real Estate Fund No. 40    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.73% 24.73%
LB Scotland Amazon Fulfillment Center Fund 29    
Investments in associates [Line Items]    
Country [5] Korea  
Reporting date [5] December 31  
Ownership [5] 65.00% 65.00%
JR AMC Hungary Budapest Office Fund 16    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 34.87% 32.57%
Gyeonggi-Neoplux Superman Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.76% 21.76%
NewWave 6th Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 30.00% 30.00%
Neoplux No. 3 Private Equity Fund    
Investments in associates [Line Items]    
Country [9] Korea  
Reporting date [9] December 31  
Ownership [9] 10.00% 10.00%
PCC Amberstone Private Equity Fund I    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.67% 21.67%
KIAMCO POWERLOAN TRUST 4TH    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 47.37% 47.37%
Mastern Opportunity Seeking Real Estate Fund II    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 20.00% 22.22%
Neoplux Market-Frontier Secondary Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 19.74% 19.74%
Synergy Green New Deal 1st New Technology Business Investment Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 28.17%
KIAMCO Vietnam Solar Special Asset Private Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
SHINHAN-NEO Core Industrial Technology Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 49.75% 49.75%
SHBNPP Green New Deal Energy Professional Investment Type Private Special Asset Investment Trust No.2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 30.00% 30.00%
Eum Private Equity Fund No.7    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.00% 21.00%
Kiwoom Hero No.4 Private Equity Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 21.05%
AJ-KOSNET Semicon One Venture Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 22.22% 22.22%
Shinhan Smilegate Global PEF I    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 14.21%
Genesis Eco No.1 PEF    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.00% 29.00%
SHINHAN-NEO Market-Frontier 2nd Fund     
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 42.70% 42.70%
J& Moorim Jade Investment Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 24.89%
Ulmus SHC innovation investment fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.04% 24.04%
T Core Industrial Technology 1st Venture PEF    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 31.47% 31.47%
TI First Property Private Investment Trust 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Kiwoom-Shinhan Innovation Fund 2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 42.86% 42.86%
ETRI Holdings-Shinhan 1st Unicorn Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
SJ ESG Innovative Growth Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 28.57%
AVES 1st Corporate Recovery Private Equity Fund    
Investments in associates [Line Items]    
Country [5] Korea  
Reporting date [5] December 31  
Ownership [5] 76.19% 76.19%
Reverent-Shinhan Vista Fund    
Investments in associates [Line Items]    
Country [9] Korea  
Reporting date [9] December 31  
Ownership [9] 13.41% 13.41%
JS Shinhan Private Equity Fund    
Investments in associates [Line Items]    
Country [9] Korea  
Reporting date [9] December 31  
Ownership [9] 3.85% 3.85%
Shinhan VC tomorrow venture fund 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 39.62% 39.62%
H-IOTA Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 24.81%
Stonebridge-Shinhan Unicorn Secondary Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 26.01% 26.01%
Tres-Yujin Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Shinhan-Time mezzanine blind Fund     
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 50.00%
Capstone REITs No.26    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
JB Incheon-Bucheon REITS No.54    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 39.31% 39.31%
Hankook Smart Real Asset Investment Trust No.3    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 33.33% 33.33%
JB Hwaseong-Hadong REITs No.53    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 31.03% 31.03%
KB Oaktree Trust No.3    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 33.33% 33.33%
SH Real Estate Loan Investment Type Private Real Estate Investment Trust No.2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.73% 29.73%
Shinhan JigaeNamsan Road Private Special Asset Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.85% 24.85%
KB Distribution Private Real Estate 3-1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 37.50% 37.50%
Pacific Private Investment Trust No.49-1    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 79.28% 79.28%
KIWOOM Real estate private placement fund for normal investors No. 31    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 60.00% 60.00%
RIFA Real estate private placement fund for normal investors No. 51    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Shinhan-Kunicorn first Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 38.31% 38.31%
Shinhan-Quantum Startup Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 49.18% 49.18%
Shinhan Simone Fund I    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 38.46% 38.46%
Korea Investment develop seed Trust No.1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Tiger Green alpha Trust No.29    
Investments in associates [Line Items]    
Country Korea  
Reporting date —  
Ownership 0.00% 95.24%
STIC ALT Global II Private Equity Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.74% 21.74%
DDI LVC Master Real Estate Investment Trust Co., Ltd.    
Investments in associates [Line Items]    
Country [1],[2] Korea  
Reporting date [1],[2] September 30  
Ownership [1],[2] 15.00% 15.00%
Find-Green New Deal 2nd Equity Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 22.57% 22.57%
ShinhanFitrin 1st Technology Business Investment Association    
Investments in associates [Line Items]    
Country [9] Korea  
Reporting date [9] December 31  
Ownership [9] 16.17% 16.17%
Koramco Private Real Estate Fund 143    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 30.30% 30.30%
Korea Investment Top Mezzanine Private Real Estate Trust No.1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 22.22% 22.22%
LB YoungNam Logistics Private Trust No.40    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 25.00% 25.00%
Shinhan-Cognitive Start-up Fund L.P.    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 32.77% 32.77%
Cornerstone J&M Fund I    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 26.67%
Logisvalley Shinhan REIT Co., Ltd.    
Investments in associates [Line Items]    
Country [2] Korea  
Reporting date [2] September 30  
Ownership [2] 20.27% 20.27%
Shinhan-Gene and New Normal First Mover Venture Investment Equity Fund 1st    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Korea Investment Green Newdeal Infra Trust No.1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 27.97% 27.97%
BTS 2nd Private Equity Fund    
Investments in associates [Line Items]    
Country [2] Korea  
Reporting date [2] November 30  
Ownership [2] 26.00% 26.00%
NH-J&-IBKC Label Technology Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 27.81% 27.81%
Shinhan-Sneak Peek Bio&Healthcare Bounce Back Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Aurum Goldrush ESG Private Fund No. 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.33% 28.33%
Shinhan-isquare Venture PEF 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Capstone Develop Frontier Trust    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 21.43%
Nextrade Co., Ltd.    
Investments in associates [Line Items]    
Country [2] Korea  
Reporting date [2] December 31  
Ownership [2] 8.00% 8.00%
IBKC-Behigh Fund 1st    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.73% 29.73%
ON No.1 Private Equity Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 28.57%
Digital New Deal Kappa Private Equity Fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 24.75%
DS-Shinhan-JBWoori New Media New Technology Investment Fund No.1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 20.83% 20.83%
VOGO Debt Strategy General Private Real Estate Investment Trust No. 18    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.57% 28.57%
Koramco IPO REITS Mezzanine General Private Investment Trust No. 38    
Investments in associates [Line Items]    
Country [5] Korea  
Reporting date [5] December 31  
Ownership [5] 75.00% 75.00%
TogetherKorea Private Investment Trust No. 6    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 99.98% 99.98%
TogetherKorea Private Investment Trust No. 7    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 99.98% 99.98%
Kiwoom Core Industrial Technology Investment Fund No.3    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 34.75% 34.75%
Penture K-Content Investment Fund    
Investments in associates [Line Items]    
Country [2] Korea  
Reporting date [2] December 31  
Ownership [2] 19.78% 19.78%
2023 Shinhan-JB Woori-Daeshin Listed Companies New Technology Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 30.00% 30.00%
Hana Alternative Investment Kosmes PCBO General PEF No. 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 37.04% 37.04%
Shinhan M&A-ESG Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 23.33% 23.33%
Shinhan Mid and Small-Sized Office Value-Added MO REIT Co., Ltd.    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.43% 28.43%
KDBC meta-enter New Technology investment fund    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 27.89%
Shinhan Time Secondary Blind New Technology Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 47.50% 47.50%
Shinhan DS Secondary Investment Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 49.83% 49.83%
Shinhan-openwater pre-IPO Investment Trust 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Shinhan-CJ TechInnovation Fund 1st    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Shinhan-Eco Venture Fund 2nd    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Heungkuk-Shinhan the 1st Visionary Technology Investment Trust no. 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 40.00% 40.00%
Hantoo Shinhan Lake K-beauty Technology Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 22.96% 22.96%
Shinhan HB Wellness 1st Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 48.54% 48.54%
Korea real Asset Fund No.3    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.57% 28.57%
PineStreet Global Corporate FoF XIII-2    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 100.00% 100.00%
Samsung-dunamu Innovative IT Technology Investment Trust No. 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 22.99% 22.99%
Time Robotics New Technology Investment Trust    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.86% 29.86%
Ascent-welcome Technology Investment Trust No.2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 27.65% 27.65%
Igis General PE Real Estate Investment Trust 517-1    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 96.71% 96.78%
SH Ulmus M.P.E. Innovative Venture Fund 7    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 28.57% 28.57%
Consus Osansegyo No.2    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Shinhan AIM Private Fund of Fund 9-B    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 25.00% 25.00%
Shinhan General Private Real Estate Investment Trust No.3    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 20.75% 20.75%
Paros Kosdaq Venture General Private Investment Trust No. 5    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.45% 28.56%
Newmain I funds    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 36.36%
TECHFIN RATINGS Co., Ltd.    
Investments in associates [Line Items]    
Country [2] Korea  
Reporting date [2] September 30  
Ownership [2] 45.00% 45.00%
Songpa biz cluster PFV Co., Ltd.    
Investments in associates [Line Items]    
Country [1],[2],[10] Korea  
Reporting date [1],[2],[10] September 30  
Ownership [1],[2],[10] 27.40% 27.40%
Planeta PTE LTD    
Investments in associates [Line Items]    
Country Singapore  
Reporting date December 31  
Ownership 33.33% 33.33%
The E&Shinhan New Growth Up Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Shinhan-GB FutureFlow Fund L.P.    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 58.18%
Credila Financial Services    
Investments in associates [Line Items]    
Country [1],[2] India  
Reporting date [1],[2] September 30  
Ownership [1],[2] 10.06% 10.93%
DB IPO HighYield Fund 1    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —   
Ownership [3] 0.00% 28.57%
Exponential SQUARE Private Investment Trust No.1    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —   
Ownership [3] 0.00% 50.99%
Fine North America Credit Private Mixed Asset Investment Trust 22    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 58.82% 58.82%
IGIS Private Real Estate Investment No.454    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 24.04% 24.04%
IGIS Private Real Estate Investment No.462    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 69.20% 69.20%
BNW Recharge Private Equity Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.13% 21.13%
United Partners Realasset Fund No.14    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 33.33% 33.33%
Shinhan Market-Frontier Fund III    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 44.02% 44.02%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.12    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.13    
Investments in associates [Line Items]    
Country [3] Korea  
Reporting date [3] —  
Ownership [3] 0.00% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.14    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 7.67% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.15    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 7.79% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.16    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 7.67% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.17    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 7.40% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.18    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 6.39% 5.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No.19    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 6.55% 5.00%
SH US Buyback&High Dividend Security Feeder Investment Trust(H)[Equity]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 19.91% 22.37%
Shinhan-DS Mezzanine Fund 1 [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 15.09% 15.09%
Shinhan Time BM sobujang Fund [Member]    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 29.41% 29.41%
Tigris Fund No.58 [Member]    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 20.83% 20.83%
IGIS Real Estate General Private Feeder Investment Company No. 562 [Member]    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 88.46% 0.00%
SH Prestige High Dividend Security Feeder No.1[Equity] [Member]    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 23.92% 21.55%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No. 21 [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 4.97% 0.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No. 22 [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 4.97% 0.00%
Shinhan Securities HIFI Bond SafeR 2Y Private Fund No. 23 [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 4.97% 0.00%
Finflow [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 15.00% 0.00%
Fireant Media and Digital Service Joint Stock Company [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 17.66% 0.00%
ST EIP Holdings Inc. [Member]    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 49.00% 0.00%
AMP Capital Global Infrastructure FundIIBL [Member]    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 1.50% 0.00%
Post CR REITS No.1 [Member]    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 70.00% 0.00%
SH US Long Term Treasury Plus Security Feeder Investment Trust(H)BondFoFs [Member]    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 23.30% 0.00%
Shinhan Global Healthcare Fund 2    
Investments in associates [Line Items]    
Country [1] Korea  
Reporting date [1] December 31  
Ownership [1] 13.68% 13.68%
Meta TB ESG Private Equity Fund I    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 27.40% 27.40%
KAI-The Square Fund 1    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 47.96% 47.96%
Shinhan-G.N.Tech Smart Innovation Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 50.00% 50.00%
Shinhan-Timefolio Bio Accelerator Fund    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 48.39% 48.39%
Timefolio Tech Fund I    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 21.18% 21.18%
IGIS Yongsan Office General Private Real Estate Investment Trust 518    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 26.22% 26.22%
SH K-REITs Infra Real Estate Investment Trust (FoFs)    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 23.30% 20.40%
Shinhan-soo secondary Fund    
Investments in associates [Line Items]    
Country [8] Korea  
Reporting date [8] December 31  
Ownership [8] 77.61% 77.61%
HHR Special Situation Real Estate Private Investment Trust No. 13    
Investments in associates [Line Items]    
Country Korea  
Reporting date December 31  
Ownership 20.00% 20.00%
[1] Although the ownership percentages are less than 20%, the Group applies the equity method accounting since it participates in policy-making processes and therefore can exercise significant influence on investees.
[2] As the financial statements as of December 31, 2025 were not available, the most recent financial statements available after the reporting date were used in applying the equity method. Significant transactions and events that occurred during the period have been appropriately reflected.
[3] Excluded from the investments in associates due to full or partial disposal of shares, or loss of significant influence.
[4] Shares were acquired through a debt-to-equity swap during the rehabilitation process. Although voting rights could not be exercised during the rehabilitation process, normal voting rights became exercisable as the rehabilitation process ended before December 31, 2025. Therefore, it has been reclassified from financial assets measured at fair value through profit or loss(FVTPL) to investments in associates.
[5] As a limited partner, the Group does not have an ability to participate in policy-making processes to obtain economic benefit from the investees that would allow the Group to control the entity.
[6] The rate of Group’s voting rights is 4.65%.
[7] Although the Group has a significant influence with ownership percentage more than 50%, the contribution was classified as investments in associates as the Group is not exposed to variable returns due to the payment guarantee for the entire investment amount.
[8] Although the ownership percentages are more than 50%, the Group applies the equity method accounting as the Group does not have an ability to participate in the financial and operating policy-making process.
[9] As a managing partner, the Group has a significant influence over the investees.
[10] The rate of Group’s voting rights is 19.86%.