Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Interest income:
Loans, including loans held for sale	$ 4,596	$ 4,257	$ 9,245	$ 7,914
Investment securities	391	335	765	633
Other	23	24	51	48
Total interest income	5,010	4,616	10,061	8,595
Interest expense:
Deposits	318	373	644	684
Securitized debt obligations	45	69	101	149
Senior and subordinated notes	82	87	164	175
Other borrowings	12	86	29	172
Total interest expense	457	615	938	1,180
Net interest income	4,553	4,001	9,123	7,415
Provision for credit losses	762	1,677	1,647	2,250
Net interest income after provision for credit losses	3,791	2,324	7,476	5,165
Non-interest income:
Service charges and other customer-related fees	534	539	1,084	954
Interchange fees, net	486	408	931	736
Total other-than-temporary impairment	(12)	(21)	(18)	(25)
Less: Portion of other-than-temporary impairment recorded in AOCI	8	8	(11)	(2)
Net other-than-temporary impairment recognized in earnings	(4)	(13)	(29)	(27)
Bargain purchase gain	0	0	0	594
Other	69	120	80	318
Total non-interest income	1,085	1,054	2,066	2,575
Non-interest expense:
Salaries and associate benefits	1,104	971	2,184	1,835
Occupancy and equipment	356	323	706	593
Marketing	330	334	647	655
Professional services	329	313	636	606
Communications and data processing	233	203	443	375
Amortization of intangibles	167	157	344	219
Acquisition-related	50	133	96	219
Other	490	708	1,031	1,144
Total non-interest expense	3,059	3,142	6,087	5,646
Income from continuing operations before income taxes	1,817	236	3,455	2,094
Income tax provision	581	43	1,075	396
Income from continuing operations, net of tax	1,236	193	2,380	1,698
Loss from discontinued operations, net of tax	(119)	(100)	(197)	(202)
Net income	1,117	93	2,183	1,496
Dividends and undistributed earnings allocated to participating securities	(4)	(1)	(9)	(8)
Preferred stock dividends	(13)	0	(26)	0
Net income available to common stockholders	$ 1,100	$ 92	$ 2,148	$ 1,488
Basic earnings per common share:
Income from continuing operations	$ 2.09	$ 0.33	$ 4.04	$ 3.11
Loss from discontinued operations	$ (0.20)	$ (0.17)	$ (0.34)	$ (0.37)
Net income per basic common share	$ 1.89	$ 0.16	$ 3.70	$ 2.74
Diluted earnings per common share:
Income from continuing operations	$ 2.07	$ 0.33	$ 3.99	$ 3.09
Loss from discontinued operations	$ (0.20)	$ (0.17)	$ (0.34)	$ (0.37)
Net income per diluted common share	$ 1.87	$ 0.16	$ 3.65	$ 2.72
Dividends paid per common share	$ 0.30	$ 0.05	$ 0.35	$ 0.10