Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities:
Net income	$ 1,583	$ 1,591
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Deferred income tax expense (benefit)	77	(44)
Amortization of other intangible assets	160	145
Other non-cash adjustments for depreciation, amortization and accretion	324	172
(Gains) losses related to investment securities, net	9	(2)
Change in trading account assets, net	(279)	96
Change in accrued income receivable, net	(124)	(111)
Change in collateral deposits, net	(2,765)	(1,219)
Change in unrealized losses on foreign exchange derivatives, net	1,304	483
Change in other assets, net	(888)	343
Change in accrued expenses and other liabilities, net	(442)	341
Claims resolution	0	(362)
Other, net	(9)	(33)
Net cash (used in) provided by operating activities	(1,050)	1,400
Investing Activities:
Net decrease in interest-bearing deposits with banks	12,127	27,303
Net increase in securities purchased under resale agreements	(811)	(1,219)
Proceeds from sales of available-for-sale securities	8,090	4,209
Proceeds from maturities of available-for-sale securities	29,540	33,047
Purchases of available-for-sale securities	(29,005)	(44,355)
Proceeds from maturities of available-for-sale securities	1,474	2,561
Purchases of held-to-maturity securities	(6,424)	(7)
Net increase in loans	(3,304)	(4,042)
Purchases of equity investments and other long-term assets	(100)	(69)
Divestitures	18	0
Purchases of premises and equipment	(259)	(254)
Other, net	84	105
Net cash provided by investing activities	11,430	17,279
Financing Activities:
Net increase (decrease) in time deposits	(14,750)	2,143
Net increase (decrease) in all other deposits	4,768	(13,141)
Net increase (decrease) in short-term borrowings	967	(1,211)
Proceeds from issuance of long-term debt, net of issuance costs	1,492	0
Payments for long-term debt and obligations under capital leases	(127)	(1,768)
Proceeds from issuance of preferred stock	0	488
Proceeds related to common stock awards and option exercises	584	438
Purchases of common stock	(1,480)	(960)
Repurchases of common stock for employee tax withholding	(163)	(88)
Payments for cash dividends	(365)	(341)
Net cash used in financing activities	(9,074)	(14,440)
Net increase	1,306	4,239
Cash and due from banks at beginning of period	2,590	2,193
Cash and due from banks at end of period	$ 3,896	$ 6,432