Fair Value Measurement - Impact of Credit Adjustments (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Credit and funding adjustments:
Derivatives CVA	$ (56)	$ 66	$ 20	$ 121
Derivatives FVA	$ (20)	$ 63	$ 37	$ 55

For debit valuation adjustments ("DVA") and funding valuation adjustments ("FVA"), amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

No definition available.

Name:	jpm_DerivativeGainLossonDerivativeNetDVAandFVA
Namespace Prefix:	jpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration