Long-Term Debt (Details) (USD $)	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Long-term debt carrying values by contractual maturity
Under 1 year	$ 45,878,000,000
1-5 years	114,767,000,000
After 5 years	87,024,000,000
Long-term Debt	247,669,000,000	266,318,000,000
Long Term Debt (Textuals) [Abstract]
Debt Instrument, Interest Rate, modified for the effects of hedge accounting, Minimum	(0.12%)	0.21%
Debt Instrument, Interest Rate, modified for the effects of hedge accounting, Maximum	14.21%	14.21%
Beneficial Interests Issued By Consolidated VIEs - Structured Notes Accounted for at Fair Value	38,839,000,000	48,972,000,000
Commercial paper	35,363,000,000	41,794,000,000
Long term debt - redeemable at the option JPMorgan Chase	45,900,000,000
Long term debt maturing in year 2	51,900,000,000
Long term debt maturing in year 3	20,400,000,000
Long term debt maturing in year 4	23,500,000,000
Long term debt maturing in year 5	18,900,000,000
Zero-coupon notes	879,000,000	3,400,000,000
Zero-coupon notes - aggregate principal amount at maturity	2,700,000,000	6,600,000,000
Weighted average contractual interest rates for long term debt	3.78%	3.52%
Long term debt weighted average contractual Interest Rate, modified for the effects of hedge accounting	0.0252	0.0186
Parent Company guarantee of certain debt of its subsidiaries, including both long-term debt and structured notes	3,700,000,000	4,500,000,000
Collateral used to secure Long Term Debt	11,700,000,000	11,400,000,000
Deferrable interest debentures issued	20,300,000,000	19,600,000,000
Redeemable Long Term Debt	35,600,000,000
Senior Debt Obligations [Member] \| JPMorgan Chase & Co. [Member]
Long-term debt carrying values by contractual maturity
Under 1 year, Minimum	0.36%
Under 1 year, Maximum	6.00%
1-5 years, Minimum	0.31%
1-5 years, Maximum	7.00%
After 5 years, Minimum	0.24%
After 5 years, Maximum	7.25%
Interest rates, Minimum	0.0024	0.0022
Interest rates, Maximum	0.0725	0.0750
Senior Debt Obligations [Member] \| JPMorgan Chase & Co. [Member] \| Long-term Debt, Fixed Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	20,384,000,000
1-5 years	47,031,000,000
After 5 years	31,372,000,000
Long-term Debt	98,787,000,000	93,729,000,000
Long Term Debt (Textuals) [Abstract]
Portion of long term debt guaranteed by FDIC under temporary liquidity guarantee program (TLG)	18,500,000,000	21,600,000,000
Senior Debt Obligations [Member] \| JPMorgan Chase & Co. [Member] \| Long Term Debt Variable Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	15,648,000,000
1-5 years	37,119,000,000
After 5 years	6,260,000,000
Long-term Debt	59,027,000,000	73,335,000,000
Long Term Debt (Textuals) [Abstract]
Portion of long term debt guaranteed by FDIC under temporary liquidity guarantee program (TLG)	17,900,000,000	19,300,000,000
Senior Debt Obligations [Member] \| Long-term Debt, Fixed Interest Rate [Member] \| Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	546,000,000
1-5 years	1,782,000,000
After 5 years	2,900,000,000
Long-term Debt	5,228,000,000	3,310,000,000
Senior Debt Obligations [Member] \| Long Term Debt Variable Interest Rate [Member] \| Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	6,435,000,000
1-5 years	17,199,000,000
After 5 years	6,911,000,000
Long-term Debt	30,545,000,000	39,835,000,000
Senior Debt Obligations [Member] \| Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
Under 1 year, Minimum	0.26%
Under 1 year, Maximum	2.00%
1-5 years, Minimum	0.21%
1-5 years, Maximum	3.75%
After 5 years, Minimum	0.32%
After 5 years, Maximum	14.21%
Interest rates, Minimum	0.0021	0.0016
Interest rates, Maximum	0.1421	0.1421
Subordinated Debt Obligations [Member] \| JPMorgan Chase & Co. [Member]
Long-term debt carrying values by contractual maturity
Under 1 year, Minimum	5.90%
Under 1 year, Maximum	6.75%
1-5 years, Minimum	1.37%
1-5 years, Maximum	6.63%
After 5 years, Minimum	2.16%
After 5 years, Maximum	8.53%
Interest rates, Minimum	0.0137	0.0114
Interest rates, Maximum	0.0853	0.1000
Subordinated Debt Obligations [Member] \| JPMorgan Chase & Co. [Member] \| Long-term Debt, Fixed Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	2,865,000,000
1-5 years	9,649,000,000
After 5 years	9,486,000,000
Long-term Debt	22,000,000,000	24,851,000,000
Subordinated Debt Obligations [Member] \| JPMorgan Chase & Co. [Member] \| Long Term Debt Variable Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	0
1-5 years	1,987,000,000
After 5 years	9,000,000
Long-term Debt	1,996,000,000	1,838,000,000
Subordinated Debt Obligations [Member] \| Long-term Debt, Fixed Interest Rate [Member] \| Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	0
1-5 years	0
After 5 years	8,605,000,000
Long-term Debt	8,605,000,000	8,655,000,000
Subordinated Debt Obligations [Member] \| Long Term Debt Variable Interest Rate [Member] \| Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	0
1-5 years	0
After 5 years	1,150,000,000
Long-term Debt	1,150,000,000	1,150,000,000
Subordinated Debt Obligations [Member] \| Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
After 5 years, Minimum	0.63%
After 5 years, Maximum	8.25%
Interest rates, Minimum	0.0063	0.0058
Interest rates, Maximum	0.0825	0.0825
Junior Subordinated Debt [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	0
1-5 years	0
After 5 years	20,331,000,000
Long-term Debt	20,331,000,000	19,615,000,000
After 5 years, Minimum	0.79%
After 5 years, Maximum	8.75%
Interest rates, Minimum	0.0079	0.0078
Interest rates, Maximum	0.0875	0.0875
Junior Subordinated Debt [Member] \| Long-term Debt, Fixed Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	0
1-5 years	0
After 5 years	15,249,000,000
Long-term Debt	15,249,000,000	16,349,000,000
Junior Subordinated Debt [Member] \| Long Term Debt Variable Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	0
1-5 years	0
After 5 years	5,082,000,000
Long-term Debt	5,082,000,000	3,266,000,000
Long-term Beneficial Interests [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	13,893,000,000
1-5 years	29,019,000,000
After 5 years	9,642,000,000
Long-term Debt	52,554,000,000	10,438,000,000
Under 1 year, Minimum	0.28%
Under 1 year, Maximum	7.00%
1-5 years, Minimum	0.25%
1-5 years, Maximum	11.00%
After 5 years, Minimum	0.05%
After 5 years, Maximum	7.47%
Interest rates, Minimum	0.0005	0.0025
Interest rates, Maximum	0.1100	0.0713
Long Term Debt (Textuals) [Abstract]
Beneficial Interests Issued By Consolidated VIEs - Structured Notes Accounted for at Fair Value	1,500,000,000	1,400,000,000
Commercial paper	25,100,000,000	4,800,000,000
Long-term Beneficial Interests [Member] \| Long-term Debt, Fixed Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	3,095,000,000
1-5 years	4,328,000,000
After 5 years	2,372,000,000
Long-term Debt	9,795,000,000	1,034,000,000
Long-term Beneficial Interests [Member] \| Long Term Debt Variable Interest Rate [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	10,798,000,000
1-5 years	24,691,000,000
After 5 years	7,270,000,000
Long-term Debt	42,759,000,000	9,404,000,000
Secured Debt [Member]
Long-term debt carrying values by contractual maturity
Long-term Debt	8,300,000,000	8,100,000,000
JPMorgan Chase & Co. [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	38,897,000,000
1-5 years	95,786,000,000
After 5 years	47,127,000,000
Long-term Debt	181,810,000,000	193,753,000,000
Long Term Debt (Textuals) [Abstract]
Long term debt maturing in year 2	42,400,000,000
Long term debt maturing in year 3	17,600,000,000
Long term debt maturing in year 4	19,000,000,000
Long term debt maturing in year 5	16,800,000,000
Subsidiaries [Member]
Long-term debt carrying values by contractual maturity
Under 1 year	6,981,000,000
1-5 years	18,981,000,000
After 5 years	19,566,000,000
Long-term Debt	$ 45,528,000,000	$ 52,950,000,000

When presenting a range of interest rates, the highest stated contractual rate modified for the effects of hedge accounting, for funds borrowed under the debt agreement as of the balance sheet date, exluding debt accounted for at fair value.

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When presenting a range of interest rates, the lowest stated contractual rate modified for the effects of hedge accounting, for funds borrowed under the debt agreement as of the balance sheet date, excluding debt accounted for at fair value.

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When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement maturing after year five following the date of the latest balance sheet presented in the financial statements.

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When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement maturing after year five following the date of the latest balance sheet presented in the financial statements.

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When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements.

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When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements.

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When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement maturing in years one through five following the date of the latest balance sheet presented in the financial statements.

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When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement maturing in years one through five following the date of the latest balance sheet presented in the financial statements.

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Description of a feature that permits the issuer of the debt to repay or convert it before the stated maturity date (early retirement date). The description may include such items as the call price, the period that the issuer can call the debt, including the earliest call date, and other significant terms of the call feature, which may include the debt holders' ability to convert the debt to equity if the call option is exercised and contingent events that trigger the issuer's ability to call the debt.

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The weighted average contractual rate modified for the effects of hedge accounting, for funds borrowed under the debt agreement as of the balance sheet date.

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Weighted average interest rate based on rate stated in the contractual debt agreements.

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- Definition

Deferred Interest Cost On Debentures.

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Collateral used to secure Long Term Debt.

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Amount of long-term debt maturing in years one through five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

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Long Term Debt Textuals.

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- Definition

Agreements (contracts) that contingently require the Parent Company to make payments of principal and interest to a lender on a subsidiaries debt if that subsidiary fails to comply with the terms of the borrowing arrangement.

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Portion of long term debt guaranteed by the FDIC under the temporary liquidity guarantee program (TLG).

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Redeemable Long Term Debt.

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Including current and noncurrent portions, aggregate carrying amount of zero-coupn long-term borrowings as of the balance sheet date. Which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Includes appregate principal amount of zero-coupon long-term borrowings at their maturities.

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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When presenting a range of interest rates, the highest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

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-Section 02

-Paragraph 22

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When presenting a range of interest rates, the lowest stated (contractual) rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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This element represents a certain statement of financial position liability caption which represents a class of liabilities, or which may include an individual liability, measured at fair value on a recurring basis.

+ References

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

-Publisher FASB

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-Paragraph 32

-Subparagraph a

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

-Publisher SEC

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-Number 210

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-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

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Amount of long-term debt maturities after year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

+ References