Litigation (Details)	1 Months Ended			3 Months Ended		36 Months Ended	52 Months Ended
	Aug. 31, 2021 USD ($)	May 31, 2021 USD ($)	Sep. 30, 2018 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2012 fund	Mar. 31, 2024 USD ($)
Loss Contingencies [Line Items]
Legal expense				$ (72,000,000)	$ 176,000,000
Threatened or Pending Litigation | Minimum
Loss Contingencies [Line Items]
Loss contingency range of possible loss				0			$ 0
Threatened or Pending Litigation | Maximum
Loss Contingencies [Line Items]
Loss contingency range of possible loss				$ 1,400,000,000			1,400,000,000
1MDB Litigation, 2009 | J.P. Morgan (Suisse) SA
Loss Contingencies [Line Items]
Amount of claim		$ 300,000,000
1MDB Litigation, 2010 | J.P. Morgan (Suisse) SA
Loss Contingencies [Line Items]
Amount of claim		$ 500,000,000
Amrapali Litigation | JPMorgan India Private Limited
Loss Contingencies [Line Items]
Amount of claim	$ 31,500,000
Number of offshore funds formerly managed by JPMorgan Chase entities | fund						2
Foreign Exchange Investigations and Litigation
Loss Contingencies [Line Items]
Loss contingency disqualification period				10 years
Interchange Litigation | The Defendants
Loss Contingencies [Line Items]
Settlement amount			$ 6,200,000,000
Payments for legal settlement							$ 700,000,000
Settlements with merchants who opted out, percentage of combined card sales volume (over)				70.00%			70.00%
Trading Venues Investigations | OCC and FRB
Loss Contingencies [Line Items]
Estimated civil penalties				$ 350,000,000			$ 350,000,000
Trading Venues Investigations | U.S. Regulator
Loss Contingencies [Line Items]
Estimated civil penalties				$ 100,000,000			$ 100,000,000