Regulatory Capital (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Basel III Standardized Fully Phased-In \| JPMorgan Chase & Co.
Regulatory capital
CET1 capital	$ 186,116	$ 183,474
Tier 1 capital	212,644	209,093
Total capital	241,483	237,511
Assets
Risk-weighted	1,542,903	1,528,916
Adjusted average	$ 2,637,741	$ 2,589,887
Capital ratios
CET1	12.10%	12.00%
Tier 1	13.80%	13.70%
Total	15.70%	15.50%
Tier 1 leverage	8.10%	8.10%
Basel III Advanced Fully Phased-In \| JPMorgan Chase & Co.
Regulatory capital
CET1 capital	$ 186,116	$ 183,474
Tier 1 capital	212,644	209,093
Total capital	231,454	227,435
Assets
Risk-weighted	1,432,526	1,421,205
Adjusted average	$ 2,637,741	$ 2,589,887
Capital ratios
CET1	13.00%	12.90%
Tier 1	14.80%	14.70%
Total	16.20%	16.00%
Tier 1 leverage	8.10%	8.10%
Total leverage exposure		$ 3,269,988
SLR		6.40%
Basel III Advanced Fully Phased-In \| JPMorgan Chase & Co.
Capital ratios
Total leverage exposure	$ 3,309,501
SLR	6.40%
Bank Holding Companies \| Basel III
Minimum capital ratios
CET1	10.50%	9.00%
Tier 1	12.00%	10.50%
Total	14.00%	12.50%
Tier 1 leverage	4.00%	4.00%
SLR	5.00%	5.00%
Well-capitalized ratios
CET1	0.00%
Tier 1	6.00%
Total	10.00%
Tier 1 leverage	5.00%
SLR	0.00%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer	2.50%
GSIB surcharge	3.50%
SLR, minimum requirement	3.00%
SLR, supplementary leverage buffer	2.00%
Insured Depository Institutions \| Basel III
Minimum capital ratios
CET1	7.00%	6.375%
Tier 1	8.50%	7.875%
Total	10.50%	9.875%
Tier 1 leverage	4.00%	4.00%
SLR	6.00%	6.00%
Well-capitalized ratios
CET1	6.50%
Tier 1	8.00%
Total	10.00%
Tier 1 leverage	5.00%
SLR	6.00%
Adjustments to Capital for Deferred Tax Liabilities [Abstract]
Capital conservation buffer	2.50%
SLR, minimum requirement	3.00%
SLR, supplementary leverage buffer	3.00%
JPMorgan Chase Bank, N.A. \| Basel III Standardized Fully Phased-In
Regulatory capital
CET1 capital	$ 190,158	$ 187,259
Tier 1 capital	190,158	187,259
Total capital	201,483	198,494
Assets
Risk-weighted	1,355,463	1,348,230
Adjusted average	$ 2,219,559	$ 2,189,293
Capital ratios
CET1	14.00%	13.90%
Tier 1	14.00%	13.90%
Total	14.90%	14.70%
Tier 1 leverage	8.60%	8.60%
JPMorgan Chase Bank, N.A. \| Basel III Advanced Fully Phased-In
Regulatory capital
CET1 capital	$ 190,158	$ 187,259
Tier 1 capital	190,158	187,259
Total capital	195,212	192,250
Assets
Risk-weighted	1,210,801	1,205,539
Adjusted average	$ 2,219,559	$ 2,189,293
Capital ratios
CET1	15.70%	15.50%
Tier 1	15.70%	15.50%
Total	16.10%	15.90%
Tier 1 leverage	8.60%	8.60%
Total leverage exposure		$ 2,813,396
SLR		6.70%
JPMorgan Chase Bank, N.A. \| Basel III Advanced Fully Phased-In
Capital ratios
Total leverage exposure	$ 2,829,536
SLR	6.70%
Chase Bank USA, N.A. \| Basel III Standardized Fully Phased-In
Regulatory capital
CET1 capital	$ 24,146	$ 23,696
Tier 1 capital	24,146	23,696
Total capital	29,044	28,628
Assets
Risk-weighted	109,635	112,513
Adjusted average	$ 122,546	$ 118,036
Capital ratios
CET1	22.00%	21.10%
Tier 1	22.00%	21.10%
Total	26.50%	25.40%
Tier 1 leverage	19.70%	20.10%
Chase Bank USA, N.A. \| Basel III Advanced Fully Phased-In
Regulatory capital
CET1 capital	$ 24,146	$ 23,696
Tier 1 capital	24,146	23,696
Total capital	27,646	27,196
Assets
Risk-weighted	168,715	174,469
Adjusted average	$ 122,546	$ 118,036
Capital ratios
CET1	14.30%	13.60%
Tier 1	14.30%	13.60%
Total	16.40%	15.60%
Tier 1 leverage	19.70%	20.10%
Total leverage exposure		$ 177,328
SLR		13.40%
Chase Bank USA, N.A. \| Basel III Advanced Fully Phased-In
Capital ratios
Total leverage exposure	$ 183,581
SLR	13.20%

Adjusted average assets, as calculated in accordance with U.S. federal regulatory capital standards.

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Adjustments to Capital for Deferred Tax Liabilities [Abstract]

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Common Equity Tier 1 Capital as defined by the regulators.

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A specific risk-based capital surcharge applied to a Global Systemically Important Bank (“GSIB”). Institutions are identified as GSIBs by the Financial Stability Board (“FSB”).

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Total Leverage Exposure

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The amount of total capital as defined in the regulations.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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