Regulatory Capital (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Basel III
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Adjustments to capital for deferred tax liabilities resulting from nontaxable business combinations	$ 100	$ 105
Adjustments to capital for deferred tax liabilities resulting from tax-deductible goodwill	3,100	3,000
JPMorgan Chase & Co. | Basel III Standardized Transitional
Regulatory capital
CET1 capital	177,531	175,398
Tier 1 capital	202,399	200,482
Total capital	236,954	234,413
Assets
Risk-weighted	1,470,741	1,465,262
Adjusted average	$ 2,345,926	$ 2,361,177
Capital ratios
CET1	12.10%	12.00%
Tier 1	13.80%	13.70%
Total	16.10%	16.00%
Tier 1 leverage	8.60%	8.50%
JPMorgan Chase & Co. | Basel III Advanced Transitional
Regulatory capital
CET1 capital	$ 177,531	$ 175,398
Tier 1 capital	202,399	200,482
Total capital	226,190	224,616
Assets
Risk-weighted	1,497,870	1,485,336
Adjusted average	$ 2,345,926	$ 2,361,177
Capital ratios
CET1	11.90%	11.80%
Tier 1	13.50%	13.50%
Total	15.10%	15.10%
Tier 1 leverage	8.60%	8.50%
JPMorgan Chase Bank, N.A. | Basel III Standardized Transitional
Regulatory capital
CET1 capital	$ 170,985	$ 168,857
Tier 1 capital	171,229	169,222
Total capital	185,947	183,262
Assets
Risk-weighted	1,309,694	1,264,056
Adjusted average	$ 1,919,207	$ 1,913,448
Capital ratios
CET1	13.10%	13.40%
Tier 1	13.10%	13.40%
Total	14.20%	14.50%
Tier 1 leverage	8.90%	8.80%
JPMorgan Chase Bank, N.A. | Basel III Advanced Transitional
Regulatory capital
CET1 capital	$ 170,985	$ 168,857
Tier 1 capital	171,229	169,222
Total capital	178,517	176,423
Assets
Risk-weighted	1,291,998	1,249,607
Adjusted average	$ 1,919,207	$ 1,913,448
Capital ratios
CET1	13.20%	13.50%
Tier 1	13.30%	13.50%
Total	13.80%	14.10%
Tier 1 leverage	8.90%	8.80%
Chase Bank USA, N.A. | Basel III Standardized Transitional
Regulatory capital
CET1 capital	$ 15,943	$ 15,419
Tier 1 capital	15,943	15,419
Total capital	21,856	21,418
Assets
Risk-weighted	99,342	105,807
Adjusted average	$ 133,100	$ 134,152
Capital ratios
CET1	16.00%	14.60%
Tier 1	16.00%	14.60%
Total	22.00%	20.20%
Tier 1 leverage	12.00%	11.50%
Chase Bank USA, N.A. | Basel III Advanced Transitional
Regulatory capital
CET1 capital	$ 15,943	$ 15,419
Tier 1 capital	15,943	15,419
Total capital	20,593	20,069
Assets
Risk-weighted	181,991	181,775
Adjusted average	$ 133,100	$ 134,152
Capital ratios
CET1	8.80%	8.50%
Tier 1	8.80%	8.50%
Total	11.30%	11.00%
Tier 1 leverage	12.00%	11.50%
Bank Holding Companies | Basel III
Capital ratios
CET1 - Minimum capital ratios	625.00%
CET1 - Well-capitalized ratios	0.00%
Tier 1 - Minimum capital ratio	775.00%
Tier 1 - Well capitalized ratio	6.00%
Total - Minimum capital ratio	975.00%
Total - Well-capitalized ratio	10.00%
Tier 1 leverage - Minimum capital ratio	4.00%
Tier 1 leverage - Well-capitalized ratio	0.00%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer phase-in amount	0.625%
Capital conservation buffer	2.50%
GSIB surcharge phase-in amount	1.125%
GSIB surcharge	4.50%
Insured Depository Institutions | Basel III
Capital ratios
CET1 - Minimum capital ratios	512.50%
CET1 - Well-capitalized ratios	6.50%
Tier 1 - Minimum capital ratio	662.50%
Tier 1 - Well capitalized ratio	8.00%
Total - Minimum capital ratio	862.50%
Total - Well-capitalized ratio	10.00%
Tier 1 leverage - Minimum capital ratio	4.00%
Tier 1 leverage - Well-capitalized ratio	5.00%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer phase-in amount	0.625%
Capital conservation buffer	2.50%