CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Interest Income
Interest and fees on loans and leases	$ 3,613	$ 3,823	$ 3,934
Interest on securities	600	658	733
Interest on other short-term investments	5	8	1
Total income	4,218	4,489	4,668
Interest Expense
Interest on deposits	352	591	953
Interest on other short-term borrowings	4	4	43
Interest on long-term debt	305	290	318
Total interest expense	661	885	1,314
Net Interest Income	3,557	3,604	3,354
Provision for loan and lease losses	423	1,538	3,543
Net Interest Income After Provision for Loan and Lease Losses	3,134	2,066	(189)
Noninterest Income
Mortgage banking net revenue	597	647	553
Service charges on deposits	520	574	632
Investment advisory revenue	375	361	326
Corporate banking revenue	350	364	372
Card and processing revenue	308	316	615
Gain on sale of processing business			1,758
Other noninterest income	250	406	479
Securities gains, net	46	47	(10)
Securities gains, net - non-qualifying hedges on mortgage servicing rights	9	14	57
Total noninterest income	2,455	2,729	4,782
Noninterest Expense
Salaries, wages and incentives	1,478	1,430	1,339
Employee benefits	330	314	311
Net occupancy expense	305	298	308
Technology and communications	188	189	181
Card and processing expense	120	108	193
Equipment expense	113	122	123
Other noninterest expense	1,224	1,394	1,371
Total noninterest expense	3,758	3,855	3,826
Income (Loss) Before Income Taxes and Change in Undstributed Earnings of Subsidiaries	1,831	940	767
Applicable income tax expense	533	187	30
Net Income (Loss)	1,298	753	737
Less: Net income attributable to noncontrolling interest	(1)
Net Income (Loss)	1,297	753	737
Dividends on preferred stock	203	250	226
Net income (loss) available to common shareholders	$ 1,094	$ 503	$ 511
Earnings Per Share	$ 1.20	$ 0.63	$ 0.73
Earnings Per Diluted Share	$ 1.18	$ 0.63	$ 0.67