The contractual amount of off-balance sheet lending-related financial instruments (e.g., commitments and guarantees), which represents the maximum possible credit risk should the counterparty draw upon the commitment or the entity be required to fulfill its obligation under the guarantee, and the counterparty subsequently fail to perform according to the terms of the contract.

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- Definition

Collateral held relating to other letters of credit.

+ Details

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- Definition

Standby letters of credit and other financial guarantees and other letters of credit.

+ Details

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- Definition

Standby letters of credit and other financial guarantees which are rated as investment-grade per company defined internal payment/performance risk groupings used for managing risk.

+ Details

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- Definition

Standby letters of credit and other financial guarantees which are rated as noninvestment-grade per company defined internal payment/performance risk groupings used for managing risk.

+ Details

Name:	jpm_StandbyLettersOfCreditAndOtherFinancialGuaranteesInternalCreditRatingNonInvestmentGrade
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Collateral held relating to standby letters of credit.

+ Details

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

+ Details

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Off-Balance Sheet Lending-Related Financial Instruments, Guarantees and Other Commitments - Standby and Other Letters of Credit and Other Financial Guarantees (Details 1) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Dec. 31, 2009
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Total lending related commitments	$ 973,093	$ 958,709	$ 954,082
Allowance for lending-related commitments	686	717	873	939
Wholesale
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Total lending related commitments	379,682	346,079
Standby Letters of Credit, and Other Financial Guarantees [Member]
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Investment-grade	76,321	70,236
Noninvestment-grade	23,194	24,601
Total lending related commitments	99,515	94,837
Allowance for lending-related commitments	312	345
Commitments with collateral	40,715	37,815
Other letters of credit
Standby letters of credit and other financial guarantees and other letters of credit [Abstract]
Investment-grade	4,971	5,289
Noninvestment-grade	1,200	1,374
Total lending related commitments	6,171	6,663
Allowance for lending-related commitments	2	2
Commitments with collateral, other letters of credit	$ 1,468	$ 2,127