Parent Company - Balance Sheets (Details) - USD ($) $ in Millions		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Assets
Cash and due from banks		$ 21,704		$ 22,324
Trading assets		411,103		413,714
Other assets		126,830		121,022
Total assets		2,687,379	[1]	2,622,532	[1]	$ 2,533,600
Liabilities and stockholders’ equity
Total liabilities	[1]	2,426,049		2,366,017
Total stockholders’ equity		261,330		256,515		$ 255,693
Total liabilities and stockholders’ equity		2,687,379		2,622,532
JPMorgan Chase & Co.
Assets
Cash and due from banks		32		55
Deposits with banking subsidiaries		5,309		5,315
Trading assets		3,011		3,304
Other assets		10,699		10,478
Total assets		493,744		473,265
Liabilities and stockholders’ equity
Borrowings from, and payables to, subsidiaries and affiliates		23,410		20,017
Short-term borrowings		2,616		2,672
Other liabilities		9,288		8,821
Long-term debt		197,100		185,240
Total liabilities		232,414		216,750
Total stockholders’ equity		261,330		256,515
Total liabilities and stockholders’ equity		493,744		473,265
Bank and bank holding company | JPMorgan Chase & Co.
Assets
Advances to, and receivables from, subsidiaries		2,358		3,334
Investments (at equity) in subsidiaries and affiliates		471,207		449,628
Non-bank | JPMorgan Chase & Co.
Assets
Advances to, and receivables from, subsidiaries		84		74
Investments (at equity) in subsidiaries and affiliates		$ 1,044		$ 1,077

[1] The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at December 31, 2019 and 2018. 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. Refer to Note 14 for a further discussion. December 31, (in millions) 2019   2018 Assets       Trading assets $ 2,633
  $ 1,966
Loans 42,931
  59,456
All other assets 881
  1,013
Total assets $ 46,445
  $ 62,435
Liabilities       Beneficial interests issued by consolidated VIEs $ 17,841
  $ 20,241
All other liabilities 447
  312
Total liabilities $ 18,288
  $ 20,553