Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Operating Activities
Net income	$ 2,127		$ 1,357
Adjustments to reconcile net income to net cash provided (used) by operating activities
Provision for credit losses	393		441
Depreciation and amortization	583		554
Deferred income taxes	804		412
Net gains on sales of securities	(75)		(119)
Net other-than-temporary impairments	14		72
Mortgage servicing rights valuation adjustment	(254)		216
Gains on sales of Visa Class B common shares	(83)
Noncash charges on trust preferred securities redemptions	30		130
Undistributed earnings of BlackRock	(173)		(132)
Excess tax benefits from share-based payment arrangements	(18)		(15)
Net change in
Trading securities and other short-term investments	463		1,394
Loans held for sale	(755)		(521)
Other assets	133		168
Accrued expenses and other liabilities	(1,293)		11
Other	(100)		(154)
Net cash provided (used) by operating activities	1,796		3,814
Sales
Securities available for sale	3,814		6,594
Loans	888		771
Repayments/maturities
Securities available for sale	5,232		4,198
Securities held to maturity	1,191		1,638
Purchases
Securities available for sale	(6,785)		(10,104)
Securities held to maturity	(224)		(100)
Loans	(603)		(672)
Net change in
Federal funds sold and resale agreements	(155)		553
Interest-earning deposits with banks	187		(2,537)
Loans	(4,494)		(8,206)
Net cash paid for acquisition activity			(3,294)
Other	306	[1]	(82)	[1]
Net cash provided (used) by investing activities	(643)		(11,241)
Net change in
Noninterest-bearing deposits	(3,226)		1,264
Interest-bearing deposits	2,409		(350)
Federal funds purchased and repurchase agreements	978		836
Commercial paper	(2,170)		3,152
Other borrowed funds	(153)		566
Sales/issuances
Federal Home Loan Bank borrowings	5,000		7,000
Bank notes and senior debt	2,442		2,089
Subordinated debt	744
Commercial paper	5,244		9,117
Other borrowed funds	402		548
Preferred stock issuance	496		1,482
Common and treasury stock	131		112
Repayments/maturities
Federal Home Loan Bank borrowings	(5,956)		(4,497)
Bank notes and senior debt	(1,425)		(3,777)
Subordinated debt	(705)		(829)
Commercial paper	(5,127)		(7,071)
Other borrowed funds	(314)		(1,689)
Preferred stock	(150)
Excess tax benefits from share-based payment arrangements - financing	18		15
Redemption of noncontrolling interests	(375)
Acquisition of treasury stock	(23)		(51)
Preferred stock cash dividends paid	(118)		(63)
Common stock cash dividends paid	(444)		(396)
Net cash provided (used) by financing activities	(2,322)		7,458
Net Increase (Decrease) In Cash And Due From Banks	(1,169)		31
Cash and due from banks at beginning of period	5,220	[2]	4,105
Cash and due from banks at end of period	4,051	[2]	4,136
Supplemental Disclosures
Interest paid	440		633
Income taxes paid	214		22
Income taxes refunded	1		9
Non-cash Investing and Financing Items
Transfer from (to) loans to (from) loans held for sale, net	13		356
Transfer from loans to foreclosed assets	$ 378		$ 509

[1] Includes the impact of the consolidation of a variable interest entity as of March 31, 2013.

[2] Amounts represent the assets or liabilities of consolidated variable interest entities (VIEs).