Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities:
Net income	$ 368	$ 405
Adjustments to reconcile net income to net cash used in operating activities:
Deferred income tax (benefit) expense	(23)	0
Amortization of other intangible assets	49	50
Other non-cash adjustments for depreciation, amortization and accretion, net	183	136
(Gains) losses related to investment securities, net	(2)	1
Change in trading account assets, net	(24)	(221)
Change in accrued interest and fees receivable, net	(25)	(39)
Change in collateral deposits, net	(776)	(3,199)
Change in unrealized losses on foreign exchange derivatives, net	2,366	563
Change in other assets, net	(874)	1,527
Change in accrued expenses and other liabilities, net	1,293	986
Other, net	317	188
Net cash used in operating activities	2,852	397
Investing Activities:
Net decrease in interest-bearing deposits with banks	10,306	10,125
Net (increase) in securities purchased under resale agreements	(318)	(8,941)
Proceeds from sales of available for sale securities	226	1,656
Proceeds from maturities of available for sale securities	6,544	6,467
Purchases of available for sale securities	(6,947)	(10,979)
Proceeds from maturities of available for sale securities	618	993
Purchases of held to maturity securities	(1,782)	(2)
Net increase in loans and leases	(378)	(111)
Purchases of equity investments and other long-term assets	(80)	(114)
Purchases of premises and equipment, net	(168)	(96)
Other, net	6	11
Net cash provided by (used in) investing activities	8,027	(991)
Financing Activities:
Net increase (decrease) in time deposits	3,087	(2,224)
Net (decrease) increase in all other deposits	(9,202)	4,536
Net (decrease) increase in other short-term borrowings	(323)	1,194
Proceeds from issuance of long-term debt, net of issuance costs	0	(915)
Payments for long-term debt and obligations under capital leases	(1,410)	0
Proceeds from exercises of common stock options	0	4
Purchases of common stock	(268)	(470)
Excess tax benefit related to stock-based compensation	3	34
Repurchases of common stock for employee tax withholding	(54)	(115)
Payments for cash dividends	(184)	(156)
Net cash (used in) provided by financing activities	(8,351)	1,888
Net increase	2,528	1,294
Cash and due from banks at beginning of period	1,207	1,855
Cash and due from banks at end of period	$ 3,735	$ 3,149