Regulatory Capital (Details) $ in Millions	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Cumulative effect of change in accounting principles
Regulatory capital, assets and risk based ratios - supplemental information
Capital transition provisions, CECL capital benefit recognized			$ 2,900
Capital transition provisions, CECL capital benefit recognized, excluding amount phased out	$ 1,400
JPMorgan Chase & Co.
Leverage-based capital metrics:
Adjusted average assets	$ 3,656,598	$ 3,703,873
Tier 1 leverage ratio	0.069	0.066
Total leverage exposure	$ 4,327,863	$ 4,367,092
SLR	0.059	0.056
Basel III Standardized | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 227,144	$ 218,934
Tier 1 capital	253,837	245,631
Total capital	286,398	277,769
Risk-weighted assets	$ 1,647,363	$ 1,653,538
CET1 capital ratio	13.80%	13.20%
Tier 1 capital ratio	0.154	0.149
Total capital ratio	0.174	0.168
Basel III Advanced | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 227,144	$ 218,934
Tier 1 capital	253,837	245,631
Total capital	273,122	264,583
Risk-weighted assets	$ 1,633,774	$ 1,609,773
CET1 capital ratio	13.90%	13.60%
Tier 1 capital ratio	0.155	0.153
Total capital ratio	0.167	0.164
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
GSIB surcharge	4.00%
Countercyclical buffer	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	0.125	0.120
Tier 1 capital	0.140	0.135
Total capital	0.160	0.155
Regulatory capital, assets and risk based ratios - supplemental information
Stress capital buffer	4.00%
Bank Holding Companies | Basel III Advanced
Minimum risk-based capital ratios
CET1 capital	0.110	0.105
Tier 1 capital	0.125	0.120
Total capital	0.145	0.140
Regulatory capital, assets and risk based ratios - supplemental information
Capital conservation buffer requirement	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
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	$ 3,180,721	$ 3,249,912
Tier 1 leverage ratio	0.086	0.083
Total leverage exposure	$ 3,848,373	$ 3,925,502
SLR	0.071	0.069
JPMorgan Chase Bank, N.A. | Basel III Standardized
Risk-based capital metrics:
CET1 capital	$ 273,551	$ 269,668
Tier 1 capital	273,554	269,672
Total capital	292,244	288,433
Risk-weighted assets	$ 1,584,591	$ 1,597,072
CET1 capital ratio	17.30%	16.90%
Tier 1 capital ratio	0.173	0.169
Total capital ratio	0.184	0.181
JPMorgan Chase Bank, N.A. | Basel III Advanced
Risk-based capital metrics:
CET1 capital	$ 273,551	$ 269,668
Tier 1 capital	273,554	269,672
Total capital	279,218	275,255
Risk-weighted assets	$ 1,489,078	$ 1,475,602
CET1 capital ratio	18.40%	18.30%
Tier 1 capital ratio	0.184	0.183
Total capital ratio	0.188	0.187