Litigation (Details)	1 Months Ended			12 Months Ended
	Jan. 31, 2017 USD ($)	May 31, 2015	Jan. 31, 2015 action	Dec. 31, 2016 USD ($) entity transaction action claim defendant trust municipality office investor	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jan. 31, 2016 claim	Sep. 30, 2015 action
Loss Contingencies [Line Items]
Legal expense/(benefit)				$ (317,000,000)	$ 2,969,000,000	$ 2,883,000,000
CIO Investigations and Litigation
Loss Contingencies [Line Items]
Settlement of class action				150,000,000
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				$ 3,000,000,000
Foreign Investigations and Litigation
Loss Contingencies [Line Items]
Period of temporary waiver		1 year
Number of defendants | defendant				1
Number of actions dismissed | action			1
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
Damages sought value (more than $1 billion)				$ 1,000,000,000
Lehman Brothers Bankruptcy Proceedings | Claims Objections Relating to Securities Lending Claims and Smaller Claims
Loss Contingencies [Line Items]
Number of legal proceedings | claim							2
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
MBS Related to Investor Action | Pending Litigation
Loss Contingencies [Line Items]
Number of actions pending | claim				1
Mortgage Backed Securities Litigation Related to Shareholder Derivative Actions [Member] | Pending Litigation
Loss Contingencies [Line Items]
Number of actions pending | claim				1
MBS Related to Individual Purchaser Actions | Pending Litigation
Loss Contingencies [Line Items]
Number of actions pending | claim				1
Mortgage Backed Securities Litigation Related to Underwriter Actions [Member] | Pending Litigation
Loss Contingencies [Line Items]
Number of actions pending | claim				1
MBS Litigation Related to MBS Offerings Sponsored By Washington Mutual
Loss Contingencies [Line Items]
Number of MBS transactions (or more) issued | 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]
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
MBS Litigation Related to MBS Offerings Issued By JPMC and Bear Stearns | Pending Litigation
Loss Contingencies [Line Items]
Number of actions pending | claim				1
Government Enforcement Investigations and Litigation
Loss Contingencies [Line Items]
Number of United States Attorney's Offices conducting ongoing investigation | office				2
Mortgage-Related Investigations and Litigation
Loss Contingencies [Line Items]
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]
Settlement agreement, consideration	$ 55,000,000
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]
Number of entities whose trustee in bankruptcy brought actions against JPMorgan Chase | entity				3
Number of credit facilities entered into with Polaroid | entity				2
Washington Mutual Litigations | Minimum
Loss Contingencies [Line Items]
Damages sought value (more than $1 billion)				$ 6,000,000,000
Washington Mutual Litigations | Maximum
Loss Contingencies [Line Items]
Damages sought value (more than $1 billion)				$ 10,000,000,000