International Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Entity-Wide Information by Geographic Areas
Revenue	$ 109,029		$ 100,705		$ 96,569
Expense	68,265		64,805		62,033
Income before income tax expense	40,764		35,900		34,536
Net income	32,474		24,441		24,733
Total assets	2,622,532	[1]	2,533,600	[1]	2,490,972
Total international
Entity-Wide Information by Geographic Areas
Revenue	25,735		23,142		22,690
Expense	16,232		15,370		15,172
Income before income tax expense	9,503		7,772		7,518
Net income	6,755		5,158		5,203
Total assets	641,637		615,432		594,051
Europe/Middle East/Africa
Entity-Wide Information by Geographic Areas
Revenue	16,181		15,120		14,418
Expense	9,953		9,347		9,126
Income before income tax expense	6,228		5,773		5,292
Net income	4,444		4,007		3,783
Total assets	423,835		407,145		394,134
Asia/Pacific
Entity-Wide Information by Geographic Areas
Revenue	7,119		6,028		6,313
Expense	4,866		4,500		4,414
Income before income tax expense	2,253		1,528		1,899
Net income	1,593		852		1,212
Total assets	171,242		163,718		156,946
Latin America/Caribbean
Entity-Wide Information by Geographic Areas
Revenue	2,435		1,994		1,959
Expense	1,413		1,523		1,632
Income before income tax expense	1,022		471		327
Net income	718		299		208
Total assets	46,560		44,569		42,971
North America
Entity-Wide Information by Geographic Areas
Revenue	83,294		77,563		73,879
Expense	52,033		49,435		46,861
Income before income tax expense	31,261		28,128		27,018
Net income	25,719		19,283		19,530
Total assets	1,980,895		1,918,168		1,896,921
U.K.
Entity-Wide Information by Geographic Areas
Total assets	$ 296,000		$ 309,000		$ 310,000

[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