Parent Company - Balance Sheets (Details) - USD ($) $ in Millions		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Assets
Cash and due from banks		$ 22,324		$ 25,898
Trading assets		413,714		381,844
Other assets		121,022		113,587
Total assets		2,622,532	[1]	2,533,600	[1]	$ 2,490,972
Liabilities and stockholders’ equity
Total liabilities	[1]	2,366,017		2,277,907
Total stockholders’ equity		256,515		255,693		$ 254,190
Total liabilities and stockholders’ equity		2,622,532		2,533,600
JPMorgan Chase & Co.
Assets
Cash and due from banks		55		163
Deposits with banking subsidiaries		5,315		5,338
Trading assets		3,304		4,773
Other assets		10,478		10,426
Total assets		473,265		475,023
Liabilities and stockholders’ equity
Borrowings from, and payables to, subsidiaries and affiliates		20,017		23,426
Short-term borrowings		2,672		3,350
Other liabilities		8,821		8,302
Long-term debt		185,240		184,252
Total liabilities		216,750		219,330
Total stockholders’ equity		256,515		255,693
Total liabilities and stockholders’ equity		473,265		475,023
Bank and bank holding company | JPMorgan Chase & Co.
Assets
Advances to, and receivables from, subsidiaries		3,334		2,106
Investments (at equity) in subsidiaries and affiliates		449,628		451,713
Non-bank | JPMorgan Chase & Co.
Assets
Advances to, and receivables from, subsidiaries		74		82
Investments (at equity) in subsidiaries and affiliates		$ 1,077		$ 422

[1] The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at December 31, 2018 and 2017. The assets of the consolidated VIEs are used to settle the liabilities of those entities. The holders of the beneficial interests do not have recourse to the general credit of JPMorgan Chase. The assets and liabilities in the table below include third-party assets and liabilities of consolidated VIEs and exclude intercompany balances that eliminate in consolidation. For a further discussion, refer to Note 14. December 31, (in millions) 2018   2017 Assets       Trading assets $ 1,966
  $ 1,449
Loans 59,456
  68,995
All other assets 1,013
  2,674
Total assets $ 62,435
  $ 73,118
Liabilities       Beneficial interests issued by consolidated VIEs $ 20,241
  $ 26,081
All other liabilities 312
  349
Total liabilities $ 20,553
  $ 26,430