Derivative Instruments - Credit Derivatives (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Total credit derivatives and credit-related notes
Protection sold	$ (1,970,234)	$ (2,100,303)
Protection purchased with identical underlyings	1,983,517	2,110,144
Net protection (sold)/purchased	13,283jpm_NetProtectionSoldPurchased	9,841jpm_NetProtectionSoldPurchased
Other protection purchased	41,658	41,810
Total credit derivatives
Total credit derivatives and credit-related notes
Protection sold	(1,970,214)	(2,100,263)
Protection purchased with identical underlyings	1,983,517	2,110,144
Net protection (sold)/purchased	13,303	9,881
Other protection purchased	37,316	38,106
Credit default swaps
Total credit derivatives and credit-related notes
Protection sold	(1,923,729)	(2,056,982)
Protection purchased with identical underlyings	1,950,481	2,078,096
Net protection (sold)/purchased	26,752	21,114
Other protection purchased	17,202	18,631
Other credit derivatives
Total credit derivatives and credit-related notes
Protection sold	(46,485)	(43,281)
Protection purchased with identical underlyings	33,036	32,048
Net protection (sold)/purchased	(13,449)	(11,233)
Other protection purchased	20,114	19,475
Credit-related notes
Total credit derivatives and credit-related notes
Protection sold	(20)	(40)
Protection purchased with identical underlyings	0	0
Net protection (sold)/purchased	(20)	(40)
Other protection purchased	$ 4,342	$ 3,704

The amount of single-name and index credit default swap protection purchased (excludes protection purchased with identical underlyings).

No definition available.

+ Details

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- Definition

Describes, in the context of the estimate of potential recoveries, any purchased credit protection with identical underlying(s).

+ References

No definition available.

+ Details

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- Definition

The amount of credit protection sold net of the amount of credit protection purchased with identical underlyings. This does not take into account the fair value of the reference obligation at the time of settlement, which would generally reduce the amount the seller of protection pays to the buy of protection in determining settlement value.

+ References

No definition available.

+ Details

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- Details

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- Definition

Maximum potential amount of future undiscounted payments that could be required under the credit derivative, before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4K

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5708775-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Credit Derivative

-URI http://asc.fasb.org/extlink&oid=6854095

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