Litigation (Details)				3 Months Ended					3 Months Ended		3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended				3 Months Ended			3 Months Ended			3 Months Ended			3 Months Ended					3 Months Ended
	Mar. 31, 2015 CIO Investigations and Litigation actions	Mar. 31, 2015 Madoff Litigation and Investigations New York federal and state court actions	Jul. 31, 2014 Madoff Litigation and Investigations New York federal and state court actions	Mar. 31, 2015 Threatened or Pending Litigation USD ($)	Mar. 31, 2015 Threatened or Pending Litigation Minimum USD ($)	Mar. 31, 2015 Threatened or Pending Litigation Maximum USD ($)	Mar. 31, 2015 Foreign Exchange Investigations and Litigation [Member] actions	Mar. 31, 2015 General Motors Litigation USD ($)	Mar. 31, 2015 Interchange Litigation	Mar. 31, 2015 Investment Management Litigation Assured Guaranty (U.K.) and Ambac Assurance UK Limited actions	Mar. 31, 2015 Investment Management Litigation Assured Guaranty (U.K.) and Ambac Assurance UK Limited Minimum USD ($)	May 31, 2010 Lehman Brothers Bankruptcy Proceedings USD ($)	Mar. 31, 2015 Lehman Brothers Bankruptcy Proceedings Minimum USD ($)	Oct. 31, 2014 LIBOR and Other Benchmark Rate Investigations and Litigation EUR (€)	Dec. 31, 2013 LIBOR and Other Benchmark Rate Investigations and Litigation EUR (€)	Sep. 30, 2013 LIBOR and Other Benchmark Rate Investigations and Litigation actions	Mar. 31, 2013 LIBOR and Other Benchmark Rate Investigations and Litigation actions	Mar. 31, 2015 Madoff Litigation, related to Fairfield USD ($) actions	Mar. 31, 2015 Breach of Fiduciary Duty Litigation Madoff Litigation and Investigations New York State Court actions	Mar. 31, 2015 Mortgage Backed Securities Litigation and Regulatory Investigations USD ($) actions	Mar. 31, 2015 Mortgage Backed Securities Litigation and Regulatory Investigations New York State Court actions	Mar. 31, 2015 Mortgage Backed Securities Litigation Related to MBS Offerings Sponsored By EMC Monoline Insurer offerings actions	Mar. 31, 2015 Mortgage Backed Securities Litigation Related to MBS Offerings Sponsored By Washington Mutual investors	Mar. 31, 2015 Mortgage Backed Securities Litigation Related to MBS Offerings Issued By JPMC and Bear Stearns USD ($) trust	Mar. 31, 2015 Mortgage-Related Investigations and Litigation municipalities	Mar. 31, 2015 Mortgage-Related Investigations and Litigation Shareholder Derivative Action New York State Supreme Court actions	Mar. 31, 2015 Municipal Derivatives Investigations and Litigation Minimum USD ($)	Mar. 31, 2012 Parmalat employees	Mar. 31, 2015 Parmalat Civil Action actions	Mar. 31, 2015 Parmalat Claw-back Actions actions	Mar. 31, 2015 Parmalat Claims Relating to Derivatives Transactions claims	Mar. 31, 2015 Petters Bankruptcy and Related Matters USD ($) entities	Mar. 31, 2015 Washington Mutual Litigations, not specifically in connection with disputed assets Plaintiff, Deutsche Bank National Trust Company Minimum USD ($)	Mar. 31, 2015 Washington Mutual Litigations, not specifically in connection with disputed assets Plaintiff, Deutsche Bank National Trust Company Maximum USD ($)	Mar. 31, 2015 Interchange Litigation Defendant Group Interchange Litigation USD ($)	Mar. 31, 2015 JPMorgan Chase & Co MF Global defendant	Mar. 31, 2015 Litigation Dismissed CIO Investigations and Litigation actions	Mar. 31, 2015 Appealed Dismissals CIO Investigations and Litigation actions	Mar. 31, 2015 Filed Motion to Dismiss CIO Investigations and Litigation actions	Mar. 31, 2015 Total international Foreign Exchange Investigations and Litigation [Member] actions
Loss Contingencies [Line Items]
Loss contingency range of possible loss					$ 0	$ 5,500,000,000
Number of legal proceedings	7	3	2				2			2						2	3	2	5	2		2				1			5	2	2						4	3	2	2
Syndicated term loan facility for General Motors Corporation								1,500,000,000
Settlement amount agreed to pay by defendant group																																			6,100,000,000
Settlement amount consideration percentage									20.00%
Loss contingency, settlement agreement, consideration, basis points of 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
Damages sought value (more than $1billion)											1,000,000,000	7,900,000,000																					6,000,000,000	10,000,000,000
Damages sought, counterclaims value (more than)													25,000,000,000
Loss contingency, settlement agreement, consideration														(72,000,000)	(80,000,000)									(4,500,000,000)
Damages sought recoveries value																		155,000,000														450,000,000
Number of defendants out of a group of defendants																																				1
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																				26,800,000,000
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as issuer																				24,300,000,000
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as underwriter																				2,500,000,000
Number of offerings by entity related to filed suit																						11
Number of institutional MBS investors directing or threatening litigation																							21
Number of MBS for which repurchase and servicing claims have been or could have been assumed																								330
Number of trustees for the MBS trusts																								7
Number of MBS trusts for which Offer is Accepted In Part or In Whole																								319
Number of MBS trusts excluded from the settlement in part of in whole																								16
Claims dismissed																					2
Number of municipalities pursuing investigations into the impact if any of alleged violations of the FHA and ECOA on their respective communities																									3
Warrants the firm was chosen to underwrite based upon alleged payments made to certain third parties (more than)																											3,000,000,000
Number of former employees intended to be charged with conspiracy																												4
Number of entities whose trustee in bankruptcy brought actions against JPMorgan Chase																																3
Loss contingency, loss in period				$ 687,000,000