Parent Company - Statements of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income	$ 24,733	$ 24,442	$ 21,745
Other operating adjustments	(1,827)	(5,122)	314
Net cash provided by operating activities	20,196	73,466	36,593
Investing activities
Available-for-sale securities: Proceeds from paydowns and maturities	65,950	76,448	90,664
Other changes in loans, net	(80,996)	(108,962)	(51,749)
All other investing activities, net	(2,825)	3,703	2,181
Net cash provided by/(used in) investing activities	(114,949)	106,980	(165,636)
Financing activities
Net change in: Other borrowed funds	(2,461)	(57,828)	9,242
Proceeds from the issuance of long-term debt	83,070	79,611	78,515
Payments of long-term debt	(68,949)	(67,247)	(65,275)
Proceeds from issuance of preferred stock	0	5,893	8,847
Treasury stock and warrants repurchased	(9,082)	(5,616)	(4,760)
Dividends paid	(8,476)	(7,873)	(6,990)
All other financing activities, net	(467)	(726)	(768)
Net cash provided by/(used in) financing activities	98,271	(187,511)	118,228
Net increase/(decrease) in cash and due from banks	3,383	(7,341)	(11,940)
Cash and due from banks at the beginning of the period	20,490	27,831	39,771
Cash and due from banks at the end of the period	23,873	20,490	27,831
Cash interest paid	9,508	7,220	8,194
JPMorgan Chase & Co.
Operating activities
Net income	24,733	24,442	21,745
Less: Net income of subsidiaries and affiliates	27,846	26,745	22,972
Parent company net loss	(3,113)	(2,303)	(1,227)
Cash dividends from subsidiaries and affiliates	13,873	17,023	14,714
Other operating adjustments	(18,166)	2,483	(1,681)
Net cash provided by operating activities	(7,406)	17,203	11,806
Investing activities
Net change in: Deposits with banking subsidiaries	60,349	30,085	(31,040)
Available-for-sale securities: Proceeds from paydowns and maturities	353	120	12,076
Other changes in loans, net	1,793	321	(319)
Advances to and investments in subsidiaries and affiliates, net	(51,967)	(81)	3,306
All other investing activities, net	114	153	32
Net cash provided by/(used in) investing activities	10,642	30,598	(15,945)
Financing activities
Net change in: Borrowings from subsidiaries and affiliates	2,957	(4,062)	4,454
Net change in: Other borrowed funds	109	(47,483)	(5,778)
Proceeds from the issuance of long-term debt	41,498	42,121	40,284
Payments of long-term debt	(29,298)	(30,077)	(31,050)
Proceeds from issuance of preferred stock	0	5,893	8,847
Treasury stock and warrants repurchased	(9,082)	(5,616)	(4,760)
Dividends paid	(8,476)	(7,873)	(6,990)
All other financing activities, net	(905)	(840)	(921)
Net cash provided by/(used in) financing activities	(3,197)	(47,937)	4,086
Net increase/(decrease) in cash and due from banks	39	(137)	(53)
Cash and due from banks at the beginning of the period	74	211	264
Cash and due from banks at the end of the period	113	74	211
Cash interest paid	4,550	3,873	3,921
Cash income taxes paid, net	$ 1,053	$ 8,251	$ 200