Litigation (Details)				12 Months Ended						12 Months Ended		12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended				12 Months Ended			12 Months Ended			0 Months Ended		12 Months Ended		12 Months Ended					12 Months Ended								1 Months Ended
	Dec. 31, 2014 CIO Investigations and Litigation actions	Dec. 31, 2014 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	Dec. 31, 2014 Threatened or Pending Litigation USD ($)	Dec. 31, 2013 Threatened or Pending Litigation USD ($)	Dec. 31, 2012 Threatened or Pending Litigation USD ($)	Dec. 31, 2014 Threatened or Pending Litigation Minimum USD ($)	Dec. 31, 2014 Threatened or Pending Litigation Maximum USD ($)	Dec. 31, 2014 General Motors Litigation USD ($)	Dec. 31, 2014 Interchange Litigation	Dec. 31, 2014 Investment Management Litigation Assured Guaranty (U.K.) and Ambac Assurance UK Limited actions	Dec. 31, 2014 Investment Management Litigation Assured Guaranty (U.K.) and Ambac Assurance UK Limited Minimum USD ($)	May 31, 2010 Lehman Brothers Bankruptcy Proceedings USD ($)	Dec. 31, 2014 Lehman Brothers Bankruptcy Proceedings Minimum USD ($)	Oct. 31, 2014 LIBOR and Other Benchmark Rate Investigations and Litigation EUR (€)	Dec. 31, 2013 LIBOR and Other Benchmark Rate Investigations and Litigation EUR (€)	Sep. 30, 2013 LIBOR and Other Benchmark Rate Investigations and Litigation actions	Mar. 31, 2013 LIBOR and Other Benchmark Rate Investigations and Litigation actions	Dec. 31, 2014 Madoff Litigation, related to Fairfield USD ($) actions	Dec. 31, 2014 Breach of Fiduciary Duty Litigation Madoff Litigation and Investigations New York State Court actions	Dec. 31, 2014 Mortgage Backed Securities Litigation and Regulatory Investigations USD ($) actions	Dec. 31, 2014 Mortgage Backed Securities Litigation and Regulatory Investigations New York State Court actions	Dec. 31, 2014 Mortgage Backed Securities Litigation Related to MBS Offerings Sponsored By EMC Monoline Insurer offerings actions	Nov. 15, 2013 Mortgage Backed Securities Litigation Related to MBS Offerings Sponsored By Washington Mutual investors	Nov. 15, 2013 Mortgage Backed Securities Litigation Related to MBS Offerings Issued By JPMC and Bear Stearns USD ($) trust	Nov. 15, 2013 Mortgage Backed Securities Litigation Related to MBS Offerings Issued By JPMC and Bear Stearns trust	Dec. 31, 2014 Mortgage-Related Investigations and Litigation municipalities	Dec. 31, 2014 Mortgage-Related Investigations and Litigation Shareholder Derivative Action New York State Supreme Court actions	Dec. 31, 2014 Municipal Derivatives Investigations and Litigation Minimum USD ($)	Mar. 31, 2012 Parmalat employees	Dec. 31, 2014 Parmalat Civil Action actions	Dec. 31, 2014 Parmalat Claw-back Actions actions	Dec. 31, 2014 Parmalat Claims Relating to Derivatives Transactions claims	Dec. 31, 2014 Petters Bankruptcy and Related Matters USD ($) entities	Dec. 31, 2014 Washington Mutual Litigations, not specifically in connection with disputed assets Plaintiff, Deutsche Bank National Trust Company Minimum USD ($)	Dec. 31, 2014 Washington Mutual Litigations, not specifically in connection with disputed assets Plaintiff, Deutsche Bank National Trust Company Maximum USD ($)	Dec. 31, 2014 Interchange Litigation Defendant Group Interchange Litigation USD ($)	Dec. 31, 2014 JPMorgan Chase & Co MF Global defendant	Dec. 31, 2014 Litigation Dismissed CIO Investigations and Litigation actions	Dec. 31, 2014 Appealed Dismissals CIO Investigations and Litigation actions	Dec. 31, 2014 Filed Motion to Dismiss CIO Investigations and Litigation actions	Nov. 30, 2014 U.K. Financial Conduct Authority Foreign Exchange Investigations and Litigation [Member] GBP (£)	Nov. 30, 2014 U.S. Commodity Futures Trading Commission Foreign Exchange Investigations and Litigation [Member] USD ($)	Nov. 30, 2014 U.S. Office of the Comptroller of the Currency Foreign Exchange Investigations and Litigation [Member] USD ($)	Dec. 31, 2014 Total international Foreign Exchange Investigations and Litigation [Member] actions
Loss Contingencies [Line Items]
Loss contingency range of possible loss							$ 0	$ 5,800,000,000
Number of legal proceedings	7	3	2								2						2	3	2	5	2		2					1			5	2	2						4	3	2				2
Civil Penalties																																										222,000,000	310,000,000	350,000,000
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%
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												1,000,000,000	7,900,000,000																						6,000,000,000	10,000,000,000
Damages sought, counterclaims value														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																					41,000,000,000
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as issuer																					38,000,000,000
Amount of original principal balance of MBS involved claims by investors or monoline insurers against JPMC, Bear Stearns or Washington Mutual as underwriter																					3,000,000,000
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				$ 2,900,000,000	$ 11,100,000,000	$ 5,000,000,000