Regulatory Capital (Details) $ in Millions	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	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	$ 1,400
JPMorgan Chase & Co.
Leverage-based capital metrics:
Adjusted average assets	$ 3,831,200	$ 3,703,873
Tier 1 leverage ratio	0.072	0.066
Total leverage exposure	$ 4,540,465	$ 4,367,092
SLR	0.061	0.056
Basel III Standardized | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 250,585	$ 218,934
Tier 1 capital	277,306	245,631
Total capital	308,497	277,769
Risk-weighted assets	$ 1,671,995	$ 1,653,538
CET1 capital ratio	15.00%	13.20%
Tier 1 capital ratio	0.166	0.149
Total capital ratio	0.185	0.168
Basel III Advanced | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 250,585	$ 218,934
Tier 1 capital	277,306	245,631
Total capital	295,417	264,583
Risk-weighted assets	$ 1,669,156	$ 1,609,773
CET1 capital ratio	15.00%	13.60%
Tier 1 capital ratio	0.166	0.153
Total capital ratio	0.177	0.164
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	4.00%
Countercyclical buffer	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	0.114	0.120
Tier 1 capital	0.129	0.135
Total capital	0.149	0.155
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
SCB	2.90%	4.00%
BHC | 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
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer	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	$ 3,337,842	$ 3,249,912
Tier 1 leverage ratio	0.079	0.083
Total leverage exposure	$ 4,038,739	$ 3,925,502
SLR	0.065	0.069
JPMorgan Chase Bank, N.A. | Basel III Standardized
Risk-based capital metrics:
CET1 capital	$ 262,030	$ 269,668
Tier 1 capital	262,032	269,672
Total capital	281,308	288,433
Risk-weighted assets	$ 1,621,789	$ 1,597,072
CET1 capital ratio	16.20%	16.90%
Tier 1 capital ratio	0.162	0.169
Total capital ratio	0.173	0.181
JPMorgan Chase Bank, N.A. | Basel III Advanced
Risk-based capital metrics:
CET1 capital	$ 262,030	$ 269,668
Tier 1 capital	262,032	269,672
Total capital	268,392	275,255
Risk-weighted assets	$ 1,526,952	$ 1,475,602
CET1 capital ratio	17.20%	18.30%
Tier 1 capital ratio	0.172	0.183
Total capital ratio	0.176	0.187