Litigation (Details)	1 Months Ended		12 Months Ended
	Jan. 31, 2016 USD ($)	May. 31, 2010 USD ($)	Dec. 31, 2015 USD ($) entity offering trust action investor defendant transaction municipality	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2015 action	Jan. 31, 2015 claim
CIO Investigations and Litigation
Loss Contingencies [Line Items]
Number of legal proceedings | action			7
Estimate of settlement to be paid			$ 150,000,000
CIO Investigations and Litigation | Litigation Dismissed
Loss Contingencies [Line Items]
Number of legal proceedings | action			6
Madoff Litigation and Investigations | New York federal and state court
Loss Contingencies [Line Items]
Number of legal proceedings | action			3
Threatened or Pending Litigation
Loss Contingencies [Line Items]
Legal expense incurred			$ 2,969,000,000	$ 2,883,000,000	$ 11,143,000,000
Threatened or Pending Litigation | Minimum
Loss Contingencies [Line Items]
Loss contingency range of possible loss			0
Threatened or Pending Litigation | Maximum
Loss Contingencies [Line Items]
Loss contingency range of possible loss			3,600,000,000
Foreign Investigations and Litigation | Canada
Loss Contingencies [Line Items]
Number of legal proceedings | action						2
General Motors Litigation
Loss Contingencies [Line Items]
Syndicated term loan facility for General Motors Corporation			1,500,000,000
Interchange Litigation
Loss Contingencies [Line Items]
Settlement amount agreed to pay by defendant group			$ 6,100,000,000
Settlement amount consideration percentage			20.00%
Basis points of credit card interchange			0.10%
Settlement agreement consideration period class plaintiffs to receive basis points of interchange			8 months
Period from end of the opt-out period			60 days
Investment Management Litigation | Assured Guaranty (U.K.) and Ambac Assurance UK Limited
Loss Contingencies [Line Items]
Number of legal proceedings | action			2
Investment Management Litigation | Minimum | Assured Guaranty (U.K.) and Ambac Assurance UK Limited
Loss Contingencies [Line Items]
Damages sought value			$ 1,000,000,000
Lehman Brothers Bankruptcy Proceedings
Loss Contingencies [Line Items]
Damages sought value		$ 7,900,000,000
Collateral		$ 700,000,000
Lehman Brothers Bankruptcy Proceedings | Subsequent Event
Loss Contingencies [Line Items]
Assessed civil money penalty	$ 1,420,000,000
Lehman Brothers Bankruptcy Proceedings | Claims Objections Relating to Securities Lending Claims and Smaller Claims
Loss Contingencies [Line Items]
Number of legal proceedings | claim							2
Lehman Brothers Bankruptcy Proceedings | Claims Relating to Derivatives Transactions
Loss Contingencies [Line Items]
Damages sought, counterclaims value			1,900,000,000
Lehman Brothers Bankruptcy Proceedings | Minimum
Loss Contingencies [Line Items]
Damages sought, counterclaims value			$ 25,000,000,000
LIBOR and Other Benchmark Rate Investigations and Litigation | Defendant Banks and ICAP Manipulation of U.S. Dollar ISDAFIX Rates | Pending Litigation
Loss Contingencies [Line Items]
Number of defendants | defendant			1
Madoff Litigation
Loss Contingencies [Line Items]
Number of legal proceedings | action			2
Damages sought recoveries value			$ 155,000,000
Breach of Fiduciary Duty Litigation | Madoff Litigation and Investigations | New York State Court
Loss Contingencies [Line Items]
Number of legal proceedings | action			5
Mortgage Backed Securities Litigation and Regulatory Investigations
Loss Contingencies [Line Items]
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as issuer or as underwriter			$ 4,200,000,000
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as issuer			2,600,000,000
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as underwriter			$ 1,600,000,000
Mortgage Backed Securities Litigation and Regulatory Investigations | U.S. Department of Justice
Loss Contingencies [Line Items]
Number of US Attorney's Offices performing investigation | action			2
Mortgage Backed Securities Litigation and Regulatory Investigations | New York State Court
Loss Contingencies [Line Items]
Claims dismissed | action			2
Claims dismissed but on appeal | action			1
MBS Litigation Related to MBS Offerings Sponsored By EMC | Monoline Insurer Litigation
Loss Contingencies [Line Items]
Pending actions			2
Number of offerings by entity related to filed suit | offering			11
MBS Litigation Related to MBS Offerings Sponsored By EMC | Underwriter Actions
Loss Contingencies [Line Items]
Number of legal proceedings | action			1
MBS Litigation Related to MBS Offerings Sponsored By Washington Mutual
Loss Contingencies [Line Items]
Number of transactions | transaction			1
Number of institutional MBS investors directing or threatening litigation | investor			21
MBS Litigation Related to MBS Offerings Issued By JPMC and Bear Stearns
Loss Contingencies [Line Items]
Number of legal proceedings | trust			4
Loss contingency, settlement agreement, consideration			$ (4,500,000,000)
Number of MBS for which repurchase and servicing claims have been or could have been assumed | trust			330
Number of MBS trusts for which an offer is accepted in part or whole | trust			319
Number of MBS trusts excluded from the settlement in part of in whole | trust			16
Mortgage-Related Investigations and Litigation
Loss Contingencies [Line Items]
Number of legal proceedings | action			2
Number of municipalities pursuing investigations into the impact if any of alleged violations of the FHA and ECOA on their respective communities | municipality			3
Mortgage-Related Investigations and Litigation | Subsequent Event
Loss Contingencies [Line Items]
Assessed civil money penalty	$ 48,000,000
Mortgage-Related Investigations and Litigation | Shareholder Derivative Action | New York State Supreme Court
Loss Contingencies [Line Items]
Number of legal proceedings | action			1
Municipal Derivatives Litigation | Minimum
Loss Contingencies [Line Items]
Warrants the firm was chosen to underwrite based upon alleged payments made to certain third parties (more than)			$ 3,000,000,000
Petters Bankruptcy and Related Matters
Loss Contingencies [Line Items]
Damages sought recoveries value			$ 450,000,000
Number of entities whose trustee in bankruptcy brought actions against JPMorgan Chase | entity			3
Number of credit facilities entered into with Polaroid | entity			2
Proprietary Products Investigations and Litigation
Loss Contingencies [Line Items]
Assessed civil money penalty			$ 307,000,000
Washington Mutual Litigations | Minimum | Plaintiff, Deutsche Bank National Trust Company
Loss Contingencies [Line Items]
Damages sought value			6,000,000,000
Washington Mutual Litigations | Maximum | Plaintiff, Deutsche Bank National Trust Company
Loss Contingencies [Line Items]
Damages sought value			$ 10,000,000,000