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Regulatory Capital - Risk-Based Capital Metrics (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Standardized | JPMorgan Chase Bank, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 294,804 $ 275,732
Tier 1 capital 294,807 275,737
Total capital 317,684 296,041
Risk-weighted assets $ 1,928,039 $ 1,718,777
CET1 capital ratio 15.30% 16.00%
Tier 1 capital ratio 0.153 0.160
Total capital ratio 0.165 0.172
Standardized | JPMorgan Chase Bank, N.A. | Apple Credit Card Portfolio    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Risk-weighted assets $ 23,000  
Capital ratio decrease 0.25%  
Advanced | JPMorgan Chase Bank, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 294,804 $ 275,732
Tier 1 capital 294,807 275,737
Total capital 302,732 282,328
Risk-weighted assets $ 1,864,923 $ 1,594,072
CET1 capital ratio 15.80% 17.30%
Tier 1 capital ratio 0.158 0.173
Total capital ratio 0.162 0.177
Advanced | JPMorgan Chase Bank, N.A. | Apple Credit Card Portfolio    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Risk-weighted assets $ 110,000  
Capital ratio decrease 1.10%  
JPMorgan Chase & Co. | Standardized    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 288,469 $ 275,513
Tier 1 capital 307,630 294,881
Total capital 343,843 325,589
Risk-weighted assets $ 1,981,692 $ 1,757,460
CET1 capital ratio 14.60% 15.70%
Tier 1 capital ratio 0.155 0.168
Total capital ratio 0.174 0.185
JPMorgan Chase & Co. | Standardized | Apple Credit Card Portfolio    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Risk-weighted assets $ 23,000  
Capital ratio decrease 0.25%  
JPMorgan Chase & Co. | Advanced    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 288,469 $ 275,513
Tier 1 capital 307,630 294,881
Total capital 328,962 311,898
Risk-weighted assets $ 2,045,249 $ 1,740,429
CET1 capital ratio 14.10% 15.80%
Tier 1 capital ratio 0.150 0.169
Total capital ratio 0.161 0.179
JPMorgan Chase & Co. | Advanced | Apple Credit Card Portfolio    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Risk-weighted assets $ 110,000  
Capital ratio decrease 0.90%