Parent Company - Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income
Other income	$ 53,970	$ 50,608	$ 50,486
Total income	109,029	100,705	96,569
Expense
Other interest expense	22,383	14,275	9,818
Noninterest expense	5,731	6,079	5,555
Income tax benefit	(8,290)	(11,459)	(9,803)
Net income	32,474	24,441	24,733
Comprehensive income	30,998	25,497	23,212
JPMorgan Chase & Co.
Income
Interest income from subsidiaries	216	72	794
Other interest income	0	41	207
Other income	888	(623)	(846)
Total income	33,678	14,495	16,045
Expense
Interest expense to subsidiaries and affiliates	2,291	400	105
Other interest expense	4,581	5,202	4,413
Noninterest expense	1,793	(1,897)	1,643
Total expense	8,665	3,705	6,161
Income before income tax benefit and undistributed net income of subsidiaries	25,013	10,790	9,884
Income tax benefit	1,838	1,007	876
Equity in undistributed net income of subsidiaries	5,623	12,644	13,973
Net income	32,474	24,441	24,733
Other comprehensive income, net	(1,476)	1,056	(1,521)
Comprehensive income	30,998	25,497	23,212
Bank and bank holding company | JPMorgan Chase & Co.
Income
Dividends from subsidiaries and affiliates	32,501	13,000	10,000
Other income from subsidiaries	515	1,553	852
Non-bank | JPMorgan Chase & Co.
Income
Dividends from subsidiaries and affiliates	2	540	3,873
Other income from subsidiaries	$ (444)	$ (88)	$ 1,165