Regulatory Capital (Details) $ in Millions	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Cumulative effect of change in accounting principles
Adjustments to Capital for Deferred Tax Liabilities [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	$ 3,703,873	$ 3,782,035
Tier 1 leverage ratio	0.066	0.065
Total leverage exposure	$ 4,367,092	$ 4,571,789
SLR	0.056	0.054
Basel III Standardized | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 218,934	$ 213,942
Tier 1 capital	245,631	246,162
Total capital	277,769	274,900
Risk-weighted assets	$ 1,653,538	$ 1,638,900
CET1 capital ratio	13.20%	13.10%
Tier 1 capital ratio	0.149	0.150
Total capital ratio	0.168	0.168
Basel III Advanced | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 218,934	$ 213,942
Tier 1 capital	245,631	246,162
Total capital	264,583	265,796
Risk-weighted assets	$ 1,609,773	$ 1,547,920
CET1 capital ratio	13.60%	13.80%
Tier 1 capital ratio	0.153	0.159
Total capital ratio	0.164	0.172
BHC | Basel III
Well capitalized risk-based capital 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%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
GSIB surcharge	3.50%	3.50%
Countercyclical buffer	0	0
SLR, minimum requirement	0.030	0.030
SLR, supplementary leverage buffer	2.00%	2.00%
BHC | Basel III Standardized
Minimum risk-based capital ratios
CET1 capital	0.120	0.112
Tier 1 capital	0.135	0.127
Total capital	0.155	0.147
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
SCB	4.00%	3.20%
BHC | 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
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer	2.50%	2.50%
IDI | Basel III
Well capitalized risk-based capital 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
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer	2.50%	2.50%
SLR, minimum requirement	0.030	0.030
SLR, supplementary leverage buffer	3.00%	3.00%
IDI | 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
IDI | 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	$ 3,249,912	$ 3,334,925
Tier 1 leverage ratio	0.083	0.080
Total leverage exposure	$ 3,925,502	$ 4,119,286
SLR	0.069	0.065
JPMorgan Chase Bank, N.A. | Basel III Standardized
Risk-based capital metrics:
CET1 capital	$ 269,668	$ 266,907
Tier 1 capital	269,672	266,910
Total capital	288,433	281,826
Risk-weighted assets	$ 1,597,072	$ 1,582,280
CET1 capital ratio	16.90%	16.90%
Tier 1 capital ratio	0.169	0.169
Total capital ratio	0.181	0.178
JPMorgan Chase Bank, N.A. | Basel III Advanced
Risk-based capital metrics:
CET1 capital	$ 269,668	$ 266,907
Tier 1 capital	269,672	266,910
Total capital	275,255	272,299
Risk-weighted assets	$ 1,475,602	$ 1,392,847
CET1 capital ratio	18.30%	19.20%
Tier 1 capital ratio	0.183	0.192
Total capital ratio	0.187	0.195