CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Income
Interest and fees on loans and leases	$ 3,574	$ 3,613	$ 3,823
Interest on securities	529	600	658
Interest on other short-term investments	4	5	8
Total interest income	4,107	4,218	4,489
Interest Expense
Interest on deposits	216	352	591
Interest on other short-term borrowings	8	4	4
Interest on long-term debt	288	305	290
Total interest expense	512	661	885
Net Interest Income	3,595	3,557	3,604
Provision for loan and lease losses	303	423	1,538
Net Interest Income After Provision for Loan and Lease Losses	3,292	3,134	2,066
Noninterest Income
Mortgage banking net revenue	845	597	647
Service charges on deposits	522	520	574
Corporate banking revenue	413	350	364
Investment advisory revenue	374	375	361
Card and processing revenue	253	308	316
Other noninterest income	574	250	406
Securities gains, net	15	46	47
Securities gains, net - non-qualifying hedges on mortgage servicing rights	3	9	14
Total noninterest income	2,999	2,455	2,729
Noninterest Expense
Salaries, wages and incentives	1,607	1,478	1,430
Employee benefits	371	330	314
Net occupancy expense	302	305	298
Technology and communications	196	188	189
Card and processing expense	121	120	108
Equipment expense	110	113	122
Other noninterest expense	1,374	1,224	1,394
Total noninterest expense	4,081	3,758	3,855
Income (Loss) Before Income Taxes and Change in Undstributed Earnings of Subsidiaries	2,210	1,831	940
Applicable income tax expense	636	533	187
Net Income (Loss)	1,574	1,298	753
Less: Net income attributable to noncontrolling interests	2	(1)
Net Income (Loss)	1,576	1,297	753
Dividends on preferred stock	35	203	250
Net income (loss) available to common shareholders	$ 1,541	$ 1,094	$ 503
Earnings Per Share	$ 1.69	$ 1.20	$ 0.63
Earnings Per Diluted Share	$ 1.66	$ 1.18	$ 0.63
Average common shares - basic	904,425,226	906,460,550	790,852,185
Average common shares - diluted	945,554,102	949,545,420	799,381,153
Cash dividends declared per share	$ 0.36	$ 0.28	$ 0.04