Litigation (Details)	1 Months Ended				2 Months Ended	3 Months Ended		12 Months Ended	36 Months Ended	40 Months Ended
	Aug. 31, 2022 USD ($)	Aug. 31, 2021 USD ($)	May 31, 2020 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2022 claim	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2012 USD ($) action	Dec. 31, 2012 fund	Mar. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Legal expense						$ 176,000,000	$ 119,000,000
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						$ 1,200,000,000				1,200,000,000
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	$ 25,000,000
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
Loss Contingencies [Line Items]
Number of claims settled | action								2
Interchange Litigation | The Defendants
Loss Contingencies [Line Items]
Settlement amount				$ 900,000,000				$ 5,300,000,000
Payments for legal settlement										$ 700,000,000
Settlements with merchants who opted out, percentage of combined card sales volume						65.00%				65.00%
Jeffrey Epstein Litigation
Loss Contingencies [Line Items]
Number of claims filed | claim					2