Regulatory Capital (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Cumulative effect of change in accounting principles
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
SLR, minimum requirement	$ 2,900
JPMorgan Chase & Co.
Leverage-based capital metrics:
Adjusted average assets	$ 3,782,035	$ 3,353,319
Tier 1 leverage ratio	0.065	0.070
Total leverage exposure	$ 4,571,789	$ 3,401,542
SLR	0.054	0.069
Basel III Standardized | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 213,942	$ 205,078
Tier 1 capital	246,162	234,844
Total capital	274,900	269,923
Risk-weighted assets	$ 1,638,900	$ 1,560,609
CET1 capital ratio	13.10%	13.10%
Tier 1 capital ratio	0.150	0.150
Total capital ratio	0.168	0.173
Basel III Advanced | JPMorgan Chase & Co.
Risk-based capital metrics:
CET1 capital	$ 213,942	$ 205,078
Tier 1 capital	246,162	234,844
Total capital	265,796	257,228
Risk-weighted assets	$ 1,547,920	$ 1,484,431
CET1 capital ratio	13.80%	13.80%
Tier 1 capital ratio	0.159	0.158
Total capital ratio	0.172	0.173
BHC | Basel III
Well capitalized risk-based capital ratios
Tier 1 capital	0.060	0.060
Total capital	0.100	0.100
Leverage-based capital metrics:
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
Risk-based capital ratios
CET1 capital	0.112	0.113
Tier 1 capital	0.127	0.128
Total capital	0.147	0.148
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Stress capital buffer	3.20%	3.20%
BHC | Basel III Advanced
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
Leverage-based capital metrics:
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
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
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	$ 3,334,925	$ 2,970,285
Tier 1 leverage ratio	0.080	0.079
Total leverage exposure	$ 4,119,286	$ 3,688,797
SLR	0.065	0.063
JPMorgan Chase Bank, N.A. | Basel III Standardized
Risk-based capital metrics:
CET1 capital	$ 266,907	$ 234,235
Tier 1 capital	266,910	234,237
Total capital	281,826	252,045
Risk-weighted assets	$ 1,582,280	$ 1,492,138
CET1 capital ratio	16.90%	15.70%
Tier 1 capital ratio	0.169	0.157
Total capital ratio	0.178	0.169
JPMorgan Chase Bank, N.A. | Basel III Advanced
Risk-based capital metrics:
CET1 capital	$ 266,907	$ 234,235
Tier 1 capital	266,910	234,237
Total capital	272,299	239,673
Risk-weighted assets	$ 1,392,847	$ 1,343,185
CET1 capital ratio	19.20%	17.40%
Tier 1 capital ratio	0.192	0.174
Total capital ratio	0.195	0.178