Other Nonint Income and Expense (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Noninterest Income And Expense [Line Items]
Litigation settlement		$ 152
Total	250	406	479
Total	1,224	1,394	1,371
Other noninterest income
Other Noninterest Income And Expense [Line Items]
BOLI income (loss)	41	194	(2)
Operating lease income	58	62	59
Equity method income from interest in Vantiv, LLC	57	26	15
Gain (loss) on loan sales	37	51	38
TSA Revenue	21	49	76
Net gain from warrant and put options associated with sale of the processing business	39	5	18
Insurance income	28	38	47
Card holder fees	41	36	48
Consumer loan and lease fees	31	32	43
Banking center income	27	22	22
Loss on sale of OREO	(71)	(78)	(70)
Gain on sale/redemption of Visa, Inc. ownership interests			244
Loss on swap associated with the sale of VISA, Inc. class B shares	(83)	(19)	(2)
Other, net	24	(12)	(57)
Total	250	406	479
Other noninterest expense
Other Noninterest Income And Expense [Line Items]
FDIC insurance and other taxes	201	242	269
Loan and lease	195	211	234
Losses and adjustments	129	187	110
Affordable Housing Investments Impairment	85	100	83
Marketing	115	98	79
Professional services fees	58	77	63
Travel	52	51	41
Postage and courier	49	48	53
Intangible asset amortization	22	43	57
Insurance	25	42	50
Operating Lease	41	41	39
OREO expense	34	33	24
Recruitment and education	31	31	30
Supplies	18	24	25
Data processing	29	24	21
Visa litigation reserve	0		(73)
Provision for unfunded commitments and letters of credit	(46)	(24)	99
Other	186	166	167
Total	$ 1,224	$ 1,394	$ 1,371