Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities
Net income	$ 18,831	$ 17,028
Adjustments to reconcile net income to net cash used in operating activities:
Provision for credit losses	2,644	2,375
Depreciation and amortization	4,084	3,724
Deferred tax (benefit)/expense	(42)	(216)
Other	1,164	1,611
Originations and purchases of loans held-for-sale	(35,908)	(43,141)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	44,995	41,657
Net change in:
Trading assets	(111,562)	(42,859)
Securities borrowed	(18,586)	(3,132)
Accrued interest and accounts receivable	(15,416)	(8,083)
Other assets	(10,146)	(716)
Trading liabilities	12,765	21,997
Accounts payable and other liabilities	8,790	12,574
Other operating adjustments	3,653	(2,243)
Net cash provided by/(used in) operating activities	(94,734)	576
Net change in:
Federal funds sold and securities purchased under resale agreements	53,757	(28,109)
Held-to-maturity securities:
Proceeds from paydowns and maturities	1,315	1,458
Purchases	(818)	(7,426)
Available-for-sale securities:
Proceeds from paydowns and maturities	30,547	19,718
Proceeds from sales	35,983	25,228
Purchases	(106,085)	(27,453)
Proceeds from sales and securitizations of loans held-for-investment	31,291	12,963
Other changes in loans, net	(16,903)	(33,441)
All other investing activities, net	(1,663)	(1,912)
Net cash provided by/(used in) investing activities	27,424	(38,974)
Net change in:
Deposits	62,795	10,100
Federal funds purchased and securities loaned or sold under repurchase agreements	19,343	16,396
Short-term borrowings	(9,907)
Short-term borrowings		12,151
Beneficial interests issued by consolidated VIEs	9,346	(165)
Proceeds from long-term borrowings	29,159	41,166
Payments of long-term borrowings	(38,384)	(50,171)
Proceeds from issuance of preferred stock	1,850	0
Redemption of preferred stock	(925)	0
Treasury stock repurchased	(10,301)	(9,639)
Dividends paid	(6,081)	(4,716)
All other financing activities, net	(426)	(1,356)
Net cash provided by financing activities	56,469	13,766
Effect of exchange rate changes on cash and due from banks and deposits with banks	86	(1,492)
Net decrease in cash and due from banks and deposits with banks	(10,755)	(26,124)
Cash and due from banks and deposits with banks at the beginning of the period	278,793	431,304
Cash and due from banks and deposits with banks at the end of the period	268,038	405,180
Cash interest paid	13,794	9,151
Cash income taxes paid, net	$ 2,892	$ 3,906