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Regulatory Capital - Risk-Based Capital Metrics (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Standardized | JPMorgan Chase Bank, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 291,288 $ 275,732
Tier 1 capital 291,292 275,737
Total capital 313,284 296,041
Risk-weighted assets $ 1,856,466 $ 1,718,777
CET1 capital ratio 15.70% 16.00%
Tier 1 capital ratio 0.157 0.160
Total capital ratio 0.169 0.172
Advanced | JPMorgan Chase Bank, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 291,288 $ 275,732
Tier 1 capital 291,292 275,737
Total capital 298,545 282,328
Risk-weighted assets $ 1,737,022 $ 1,594,072
CET1 capital ratio 16.80% 17.30%
Tier 1 capital ratio 0.168 0.173
Total capital ratio 0.172 0.177
JPMorgan Chase & Co. | Standardized    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 287,297 $ 275,513
Tier 1 capital 306,599 294,881
Total capital 343,215 325,589
Risk-weighted assets $ 1,935,868 $ 1,757,460
CET1 capital ratio 14.80% 15.70%
Tier 1 capital ratio 0.158 0.168
Total capital ratio 0.177 0.185
JPMorgan Chase & Co. | Advanced    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CET1 capital $ 287,297 $ 275,513
Tier 1 capital 306,599 294,881
Total capital 328,356 311,898
Risk-weighted assets $ 1,932,404 $ 1,740,429
CET1 capital ratio 14.90% 15.80%
Tier 1 capital ratio 0.159 0.169
Total capital ratio 0.170 0.179