Capital (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2010	Dec. 31, 2009
Capitals [Abstract]
Tier 1	$ 142,450	$ 132,971
Total	182,216	177,073
Tier 1 capital		10.76%
Well-capitalized Ratios [Member]
Capitals [Abstract]
Tier 1 capital	6.00%
Total capital	10.00%
Tier 1 leverage	5.00%
Minimum Capital Ratios [Member]
Capitals [Abstract]
Tier 1 capital	4.00%
Total capital	8.00%
Tier 1 leverage	3.00%
JPMorgan Chase & Co. [Member]
Capitals [Abstract]
Tier 1	142,450	132,971
Total	182,216	177,073
Risk-weighted	1,174,978	1,198,006
Adjusted average	2,024,515	1,933,767
Tier 1 capital	12.10%	11.10%
Total capital	15.50%	14.80%
Tier 1 leverage	7.00%	6.90%
JPMorgan Chase Bank, N.A. [Member]
Capitals [Abstract]
Tier 1	91,764	96,372
Total	130,444	136,646
Risk-weighted	965,897	1,011,995
Adjusted average	1,611,486	1,609,081
Tier 1 capital	9.50%	9.50%
Total capital	13.50%	13.50%
Tier 1 leverage	5.70%	6.00%
Chase Bank USA, N.A. [Member]
Capitals [Abstract]
Tier 1	12,966	15,534
Total	16,659	19,198
Risk-weighted	116,992	114,693
Adjusted average	$ 117,368	$ 74,087
Tier 1 capital	11.10%	13.50%
Total capital	14.20%	16.70%
Tier 1 leverage	11.00%	21.00%

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

Name:	jpm_AdjustedAverageAssets
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Risk-weighted assets as calculated in accordance with U.S. federal regulatory capital standards.

+ Details

Name:	jpm_RiskWeightedAssets
Namespace Prefix:	jpm
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of total capital as defined in the regulations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Chapter 17

-Paragraph 15

-Subparagraph 3a

-IssueDate 2006-05-01

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Chapter 17

-Paragraph 54

-Subparagraph 3a

-IssueDate 2006-05-01

+ Details

Name:	us-gaap_Capital
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

+ Details

Name:	us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

+ Details

Name:	us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_CapitalToRiskWeightedAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_SummaryOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

+ References

+ Details

Name:	us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulations.

+ References

+ Details

Name:	us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Tier 1 Leverage Capital divided by average assets as defined in the regulations.

+ References

+ Details

Name:	us-gaap_TierOneLeverageCapitalToAverageAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Tier 1 Risk Based Capital as defined in the regulations.

+ References

+ Details

Name:	us-gaap_TierOneRiskBasedCapital
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

+ Details

Name:	us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

+ References

+ Details

Name:	us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Tier 1 capital divided by risk weighted assets as defined by regulations.

+ References

+ Details

Name:	us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant