Regulatory Capital (Details) $ in Millions	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Cumulative effect of change in accounting principles
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Capital transition provisions, CECL capital benefit recognized		$ 2,900
Capital transition provisions, CECL capital benefit recognized, excluding amount phased out	$ 2,200
JPMorgan Chase & Co.
Leverage-based capital metrics:
Adjusted average assets	$ 3,861,979	$ 3,782,035
Tier 1 leverage ratio	0.062	0.065
Total leverage exposure	$ 4,563,099	$ 4,571,789
SLR	0.053	0.054
Basel III Standardized | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 207,436	$ 213,942
Tier 1 capital	239,705	246,162
Total capital	268,339	274,900
Risk-weighted assets	$ 1,704,893	$ 1,638,900
CET1 capital ratio	12.20%	13.10%
Tier 1 capital ratio	0.141	0.150
Total capital ratio	0.157	0.168
Basel III Advanced | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 207,436	$ 213,942
Tier 1 capital	239,705	246,162
Total capital	257,329	265,796
Risk-weighted assets	$ 1,613,210	$ 1,547,920
CET1 capital ratio	12.90%	13.80%
Tier 1 capital ratio	0.149	0.159
Total capital ratio	0.160	0.172
Bank Holding Companies | Basel III
Well capitalized risk-based ratios
Tier 1 capital	0.060	0.060
Total capital	0.100	0.100
Minimum leverage-based capital ratios
Tier 1 leverage	0.040	0.040
SLR	5.00%	5.00%
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
GSIB surcharge	3.50%	3.50%
Countercyclical buffer	0	0
SLR, minimum requirement	0.030	0.030
SLR, supplementary leverage buffer requirements	2.00%	2.00%
Bank Holding Companies | Basel III Standardized
Minimum risk-based capital ratios
CET1 capital	0.112	0.112
Tier 1 capital	0.127	0.127
Total capital	0.147	0.147
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Stress capital buffer	3.20%	3.20%
Bank Holding Companies | Basel III Advanced
Minimum risk-based capital ratios
CET1 capital	0.105	0.105
Tier 1 capital	0.120	0.120
Total capital	0.140	0.140
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Capital conservation buffer requirement	2.50%	2.50%
Insured Depository Institutions | Basel III
Well capitalized risk-based ratios
CET1 capital	0.065	0.065
Tier 1 capital	0.080	0.080
Total capital	0.100	0.100
Minimum leverage-based capital ratios
Tier 1 leverage	0.040	0.040
SLR	6.00%	6.00%
Well capitalized leverage-based capital ratios
Tier 1 leverage	0.050	0.050
SLR	0.060	0.060
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Capital conservation buffer requirement	2.50%	2.50%
SLR, minimum requirement	0.030	0.030
SLR, supplementary leverage buffer requirements	3.00%	3.00%
Insured Depository Institutions | Basel III Standardized
Minimum risk-based capital ratios
CET1 capital	0.070	0.070
Tier 1 capital	0.085	0.085
Total capital	0.105	0.105
Insured Depository Institutions | Basel III Advanced
Minimum risk-based capital ratios
CET1 capital	0.070	0.070
Tier 1 capital	0.085	0.085
Total capital	0.105	0.105
JPMorgan Chase Bank, N.A.
Leverage-based capital metrics:
Adjusted average assets	$ 3,402,079	$ 3,334,925
Tier 1 leverage ratio	0.077	0.080
Total leverage exposure	$ 4,104,529	$ 4,119,286
SLR	0.064	0.065
JPMorgan Chase Bank, N.A. | Basel III Standardized
Risk-based capital metrics:
CET1 capital	$ 263,041	$ 266,907
Tier 1 capital	263,044	266,910
Total capital	279,857	281,826
Risk-weighted assets	$ 1,631,555	$ 1,582,280
CET1 capital ratio	16.10%	16.90%
Tier 1 capital ratio	0.161	0.169
Total capital ratio	0.172	0.178
JPMorgan Chase Bank, N.A. | Basel III Advanced
Risk-based capital metrics:
CET1 capital	$ 263,041	$ 266,907
Tier 1 capital	263,044	266,910
Total capital	268,368	272,299
Risk-weighted assets	$ 1,461,684	$ 1,392,847
CET1 capital ratio	18.00%	19.20%
Tier 1 capital ratio	0.180	0.192
Total capital ratio	0.184	0.195