Regulatory Capital (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Basel III
Minimum capital ratios
CET1	4.50%
Tier 1	6.00%
Total	8.00%
Tier 1 leverage	4.00%
Well-capitalized ratios
CET1	6.50%
Tier 1	8.00%
Total	10.00%
Tier 1 leverage	5.00%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Adjustments to capital for deferred tax liabilities resulting from nontaxable business combinations	$ 105,000,000	$ 130,000,000
Adjustments to capital for deferred tax liabilities resulting from tax-deductible goodwill	3,000,000,000	2,700,000,000
JPMorgan Chase & Co. | Basel III Standardized Transitional
Regulatory capital
CET1 capital	175,398,000,000	164,426,000,000
Tier 1 capital	200,482,000,000	186,263,000,000
Total capital	234,413,000,000	221,117,000,000
Assets
Risk-weighted assets	1,465,262,000,000	1,472,602,000,000
Adjusted average	$ 2,361,177,000,000	$ 2,464,915,000,000
Capital ratios
CET1	12.00%	11.20%
Tier 1	13.70%	12.60%
Total	16.00%	15.00%
Tier 1 leverage	8.50%	7.60%
JPMorgan Chase & Co. | Basel III Advanced Transitional
Regulatory capital
CET1 capital	$ 175,398,000,000	$ 164,426,000,000
Tier 1 capital	200,482,000,000	186,263,000,000
Total capital	224,616,000,000	210,576,000,000
Assets
Risk-weighted assets	1,485,336,000,000	1,608,240,000,000
Adjusted average	$ 2,361,177,000,000	$ 2,464,915,000,000
Capital ratios
CET1	11.80%	10.20%
Tier 1	13.50%	11.60%
Total	15.10%	13.10%
Tier 1 leverage	8.50%	7.60%
JPMorgan Chase & Co. | Basel III
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred securities included in Basel III Tier I capital	$ 992,000,000	$ 2,700,000,000
JPMorgan Chase Bank, N.A. | Basel III Standardized Transitional
Regulatory capital
CET1 capital	168,857,000,000	156,567,000,000
Tier 1 capital	169,222,000,000	156,891,000,000
Total capital	183,262,000,000	173,322,000,000
Assets
Risk-weighted assets	1,264,056,000,000	1,230,358,000,000
Adjusted average	$ 1,913,448,000,000	$ 1,968,131,000,000
Capital ratios
CET1	13.40%	12.70%
Tier 1	13.40%	12.80%
Total	14.50%	14.10%
Tier 1 leverage	8.80%	8.00%
JPMorgan Chase Bank, N.A. | Basel III Advanced Transitional
Regulatory capital
CET1 capital	$ 168,857,000,000	$ 156,567,000,000
Tier 1 capital	169,222,000,000	156,891,000,000
Total capital	176,423,000,000	166,326,000,000
Assets
Risk-weighted assets	1,249,607,000,000	1,330,175,000,000
Adjusted average	$ 1,913,448,000,000	$ 1,968,131,000,000
Capital ratios
CET1	13.50%	11.80%
Tier 1	13.50%	11.80%
Total	14.10%	12.50%
Tier 1 leverage	8.80%	8.00%
JPMorgan Chase Bank, N.A. | Basel III
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred securities included in Basel III Tier I capital	$ 420,000,000
Chase Bank USA, N.A. | Basel III Standardized Transitional
Regulatory capital
CET1 capital	15,419,000,000	$ 14,556,000,000
Tier 1 capital	15,419,000,000	14,556,000,000
Total capital	21,418,000,000	20,517,000,000
Assets
Risk-weighted assets	105,807,000,000	103,468,000,000
Adjusted average	$ 134,152,000,000	$ 128,111,000,000
Capital ratios
CET1	14.60%	14.10%
Tier 1	14.60%	14.10%
Total	20.20%	19.80%
Tier 1 leverage	11.50%	11.40%
Chase Bank USA, N.A. | Basel III Advanced Transitional
Regulatory capital
CET1 capital	$ 15,419,000,000	$ 14,556,000,000
Tier 1 capital	15,419,000,000	14,556,000,000
Total capital	20,069,000,000	19,206,000,000
Assets
Risk-weighted assets	181,775,000,000	157,565,000,000
Adjusted average	$ 134,152,000,000	$ 128,111,000,000
Capital ratios
CET1	8.50%	9.20%
Tier 1	8.50%	9.20%
Total	11.00%	12.20%
Tier 1 leverage	11.50%	11.40%
Chase Bank USA, N.A. | Basel III
Regulatory capital, assets and risk based ratios - supplemental information [Abstract]
Trust preferred securities included in Basel III Tier I capital	$ 0