Consolidated Statements of Income (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest Income
Interest and fees on loans and leases	$ 1,492	$ 1,546	$ 4,486	$ 4,589
Interest and dividends on securities	221	199	685	512
Interest on other earning assets	7	5	20	15
Total interest income	1,720	1,750	5,191	5,116
Interest Expense
Interest on deposits	105	150	333	473
Interest on federal funds purchased, securities sold under repurchase agreements and short-term borrowed funds	2	3	5	10
Interest on long-term debt	130	181	472	578
Total interest expense	237	334	810	1,061
Net Interest Income	1,483	1,416	4,381	4,055
Provision for credit losses	244	250	805	918
Net Interest Income After Provision for Credit Losses	1,239	1,166	3,576	3,137
Noninterest Income
Insurance income	333	241	997	790
Service charges on deposits	142	141	417	421
Mortgage banking income	211	123	609	301
Investment banking and brokerage fees and commissions	90	81	267	258
Checkcard fees	48	78	136	229
Bankcard fees and merchant discounts	62	51	175	149
Trust and investment advisory revenues	46	43	137	131
Income from bank-owned life insurance	30	33	87	92
FDIC loss share income, net	(90)	(104)	(221)	(243)
Other income	92	42	208	104
Securities gains (losses), net
Realized gains (losses), net	1	0	(3)	37
Other-than-temporary impairments	0	(7)	(5)	(18)
Non-credit portion recognized in other comprehensive income	(2)	(32)	(4)	(60)
Total securities gains (losses), net	(1)	(39)	(12)	(41)
Total noninterest income	963	690	2,800	2,191
Noninterest Expense
Personnel expense	797	671	2,302	2,048
Foreclosed property expense	54	168	218	456
Occupancy and equipment expense	166	151	478	457
Loan processing expenses	85	55	210	168
Regulatory charges	40	46	124	166
Professional services	36	56	110	125
Software expense	36	30	100	85
Amortization of intangibles	31	24	82	75
Merger-related and restructuring charges, net	43	0	57	0
Other expenses	241	216	659	604
Total noninterest expense	1,529	1,417	4,340	4,184
Earnings
Income (loss) before income taxes	673	439	2,036	1,144
Provision for income taxes	177	68	557	212
Net income	496	371	1,479	932
Noncontrolling interests	2	5	36	34
Preferred stock dividends	25	0	33	0
Net income available to common shareholders	$ 469	$ 366	$ 1,410	$ 898
Earnings Per Common Share
Basic	$ 0.67	$ 0.52	$ 2.02	$ 1.29
Diluted	$ 0.66	$ 0.52	$ 1.99	$ 1.27
Cash dividends declared	$ 0.20	$ 0.16	$ 0.60	$ 0.49
Weighted Average Shares Outstanding
Basic	699,091	697,052	698,454	696,335
Diluted	709,875	705,604	708,439	704,910