Regulatory Capital - Risk-Based Capital Metrics (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Standardized | JPMorgan Chase Bank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 295,755	$ 294,804
Tier 1 capital	295,758	294,807
Total capital	318,780	317,684
Risk-weighted assets	$ 1,961,368	$ 1,928,039
CET1 capital ratio	15.10%	15.30%
Tier 1 capital ratio	0.151	0.153
Total capital ratio	0.163	0.165
Advanced | JPMorgan Chase Bank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 295,755	$ 294,804
Tier 1 capital	295,758	294,807
Total capital	303,342	302,732
Risk-weighted assets	$ 1,862,268	$ 1,864,923
CET1 capital ratio	15.90%	15.80%
Tier 1 capital ratio	0.159	0.158
Total capital ratio	0.163	0.162
Advanced | JPMorgan Chase Bank, N.A. | Apple Credit Card Portfolio
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk-weighted assets	$ 30,000	$ 110,000
JPMorgan Chase & Co. | Standardized
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	291,152	288,469
Tier 1 capital	310,317	307,630
Total capital	349,931	343,843
Risk-weighted assets	$ 2,039,324	$ 1,981,692
CET1 capital ratio	14.30%	14.60%
Tier 1 capital ratio	0.152	0.155
Total capital ratio	0.172	0.174
JPMorgan Chase & Co. | Advanced
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital	$ 291,152	$ 288,469
Tier 1 capital	310,317	307,630
Total capital	334,355	328,962
Risk-weighted assets	$ 2,061,341	$ 2,045,249
CET1 capital ratio	14.10%	14.10%
Tier 1 capital ratio	0.151	0.150
Total capital ratio	0.162	0.161
JPMorgan Chase & Co. | Advanced | Apple Credit Card Portfolio
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk-weighted assets	$ 30,000	$ 110,000