Variable Interest Entities (Details 13) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets	$ 3,600	$ 3,600
Collateralized Credit Card Securities [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets		4,016
Weighted-average life (in years)		0.6
Weighted-average constant prepayment rate		14.30%
Impact of 10% adverse change		(1)
Impact of 20% adverse change		(2)
Weighted-average loss assumption		6.80%
Impact of 10% adverse change		(1)
Impact of 20% adverse change		(3)
Weighted-average discount rate		12.00%
Impact of 10% adverse change		(10)
Impact of 20% adverse change		(20)
Option ARMs [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets	29	113
Weighted-average life (in years)	7.7	5.1
Weighted-average constant prepayment rate	8.40%	15.70%
Impact of 10% adverse change	0	0
Impact of 20% adverse change	(1)	(1)
Weighted-average loss assumption	30.00%	0.70%
Impact of 10% adverse change	0	0
Impact of 20% adverse change	(1)	0
Weighted-average discount rate	6.30%	5.40%
Impact of 10% adverse change	(1)	(1)
Impact of 20% adverse change	(2)	(3)
Subprime [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets	14	27
Weighted-average life (in years)	6.6	4.3
Weighted-average constant prepayment rate	5.70%	21.80%
Impact of 10% adverse change	0	(2)
Impact of 20% adverse change	(1)	(3)
Weighted-average loss assumption	16.20%	2.70%
Impact of 10% adverse change	(1)	(4)
Impact of 20% adverse change	(2)	(7)
Weighted-average discount rate	10.70%	23.20%
Impact of 10% adverse change	0	(2)
Impact of 20% adverse change	(1)	(4)
Prime [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets	708	1,143
Weighted-average life (in years)	5.5	8.3
Weighted-average constant prepayment rate	7.90%	4.90%
Impact of 10% adverse change	(15)	(15)
Impact of 20% adverse change	(27)	(31)
Weighted-average loss assumption	5.20%	3.20%
Impact of 10% adverse change	(12)	(15)
Impact of 20% adverse change	(21)	(29)
Weighted-average discount rate	11.60%	11.40%
Impact of 10% adverse change	(26)	(41)
Impact of 20% adverse change	(47)	(82)
Commercial and other [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets	2,906	2,361
Weighted-average life (in years)	3.3	3.5
Impact of 10% adverse change	0	0
Impact of 20% adverse change	0	0
Weighted-average loss assumption	2.10%	1.40%
Impact of 10% adverse change	(76)	(41)
Impact of 20% adverse change	(151)	(100)
Weighted-average discount rate	16.40%	12.50%
Impact of 10% adverse change	(69)	(72)
Impact of 20% adverse change	(134)	(139)
Student [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets		51
Weighted-average life (in years)		8.1
Weighted-average constant prepayment rate		5.00%
Impact of 10% adverse change		(1)
Impact of 20% adverse change		(2)
Weighted-average loss assumption		0.00%
Impact of 10% adverse change		0
Impact of 20% adverse change		0
Weighted-average discount rate		9.00%
Impact of 10% adverse change		(2)
Impact of 20% adverse change		(4)
Auto Loans [Member]
Key economic assumptions used to determine the fair value of certain of the Firm's retained interests, other than MSRs [Abstract]
JPMorgan Chase interests in securitized assets		9
Weighted-average life (in years)		0.6
Weighted-average constant prepayment rate		14.00%
Impact of 10% adverse change		0
Impact of 20% adverse change		(1)
Weighted-average loss assumption		0.80%
Impact of 10% adverse change		0
Impact of 20% adverse change		0
Weighted-average discount rate		2.80%
Impact of 10% adverse change		0
Impact of 20% adverse change		$ 0

The hypothetical financial impact of a 10 percent adverse change of the discount rate on the fair value of interests that continue to be held by the transferor (other than servicing assets or servicing liabilities) as of the balance sheet date.

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- Definition

The hypothetical financial impact of a 10 percent adverse change of the expected credit losses on the fair value of interests that continue to be held by the transferor (other than servicing assets or servicing liabilities) as of the balance sheet date.

+ Details

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- Definition

The hypothetical financial impact of a 10 percent adverse change of prepayment speed on the fair value of interests that continue to be held by the transferor (other than servicing assets or servicing liabilities) as of the balance sheet date.

+ Details

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- Definition

The hypothetical financial impact of a 20 percent adverse change of the discount rate on the fair value of interests that continue to be held by the transferor (other than servicing assets or servicing liabilities) as of the balance sheet date.

+ Details

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- Definition

The hypothetical financial impact of a 20 percent adverse change of the expected credit losses on the fair value of interests that continue to be held by the transferor (other than servicing assets or servicing liabilities) as of the balance sheet date.

+ Details

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- Definition

The hypothetical financial impact of a 20 percent adverse change of prepayment speed on the fair value of interests that continue to be held by the transfero (other than servicing assets or servicing liabilities) as of the balance sheet date.

+ Details

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- Definition

A specified percentage variance in the discount rate assumption in the determination of fair value of interests continued to be held other than servicing assets or servicing liabilities.

+ Details

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- Definition

A specified percentage variance in the prepayment speed assumption in the determination of fair value of interests continued to be held other than servicing assets or servicing liabilities.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

A specified percentage variance in the expected credit losses assumption in the determination of fair value of interests continued to be held (other than servicing assets or servicing liabilities).

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Weighted Average Life Of Securitized Assets.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the interests continued to be held by a transferor (retained or residual interest) after transferring financial assets to a third party.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 4, 58, 59

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 7

+ Details

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