Consolidated Statement of Cash Flows (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities:
Net income	$ 984	$ 927
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax expense (benefit)	(15)	125
Amortization of other intangible assets	99	80
Other non-cash adjustments for depreciation, amortization and accretion	70	(249)
Losses related to investment securities, net	(20)	(45)
Change in trading account assets, net	(1,477)	(55)
Change in accrued income receivable	(138)	786
Change in collateral deposits, net	(683)	(229)
Change in trading liabilities, net	748
Other, net	(3,942)	2,062
Net cash (used in) provided by operating activities	(4,374)	3,402
Investing Activities:
Net (increase) decrease in interest-bearing deposits with banks	(8,665)	6,334
Net (increase) decrease in securities purchased under resale agreements	1,005	(363)
Proceeds from sales of available-for-sale securities	7,552	13,774
Proceeds from maturities of available-for-sale securities	21,380	20,680
Purchases of available-for-sale securities	(40,870)	(40,620)
Proceeds from maturities of held-to-maturity securities	1,940	2,742
Purchases of held-to-maturity securities	(452)	(382)
Net increase in loans	(1,154)	(1,146)
Business acquisitions, net of cash acquired	(77)	(2,240)
Purchases of equity investments and other long-term assets	(63)	(19)
Purchases of premises and equipment	(192)	(79)
Other, net	194	301
Net cash used in investing activities	(19,402)	(1,018)
Financing Activities:
Net increase (decrease) in time deposits	(6,261)	3,965
Net increase in all other deposits	33,325	1,716
Net decrease in short-term borrowings	(3,152)	(5,020)
Proceeds from issuance of long-term debt, net of issuance costs	1,986
Payments for long-term debt and obligations under capital leases	(1,018)	(333)
Proceeds from issuance of preferred stock	500
Proceeds from exercises of common stock options	37	8
Purchases of common stock	(225)
Repurchases of common stock for employee tax withholding	(58)	(39)
Proceeds from issuance of treasury stock for stock awards and options exercised	6
Payments for cash dividends	(103)	(10)
Net cash provided by financing activities	25,037	287
Net increase	1,261	2,671
Cash and due from banks at beginning of period	3,311	2,641
Cash and due from banks at end of period	$ 4,572	$ 5,312