Segment Reporting (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income from continuing operations before noncontrolling interests	$ 912	$ 781	$ 1,744	$ 1,429
Retail Banking [Member]
Net interest income	809	878	1,627	1,747
Noninterest income	461	510	890	1,000
Total revenue	1,270	1,388	2,517	2,747
Provision for credit losses (benefit)	180	280	456	619
Depreciation and amortization	46	59	93	122
Other noninterest expense	975	935	1,929	1,847
Income (loss) from continuing operations before income taxes and noncontrolling interests	69	114	39	159
Income taxes (benefit)	25	34	13	55
Income from continuing operations before noncontrolling interests	44	80	26	104
Inter-segment revenue	1		1
Average Assets	65,756	68,004	66,210	68,178
Corporate & Institutional Banking [Member]
Net interest income	831	922	1,613	1,804
Noninterest income	332	296	631	667
Total revenue	1,163	1,218	2,244	2,471
Provision for credit losses (benefit)	31	97	1	333
Depreciation and amortization	36	37	79	71
Other noninterest expense	407	385	809	797
Income (loss) from continuing operations before income taxes and noncontrolling interests	689	699	1,355	1,270
Income taxes (benefit)	241	251	475	454
Income from continuing operations before noncontrolling interests	448	448	880	816
Inter-segment revenue	6	4	9	20
Average Assets	79,012	77,029	78,002	78,295
Asset Management Group [Member]
Net interest income	59	62	119	125
Noninterest income	167	155	329	319
Total revenue	226	217	448	444
Provision for credit losses (benefit)	(18)	14	(24)	23
Depreciation and amortization	10	10	20	20
Other noninterest expense	158	150	308	296
Income (loss) from continuing operations before income taxes and noncontrolling interests	76	43	144	105
Income taxes (benefit)	28	16	53	39
Income from continuing operations before noncontrolling interests	48	27	91	66
Inter-segment revenue	3	2	6	6
Average Assets	6,655	6,992	6,786	7,016
Residential Mortgage Banking [Member]
Net interest income	47	70	103	144
Noninterest income	172	182	374	336
Total revenue	219	252	477	480
Provision for credit losses (benefit)	(8)	(8)		(24)
Depreciation and amortization	3	1	5	2
Other noninterest expense	137	108	272	227
Income (loss) from continuing operations before income taxes and noncontrolling interests	87	151	200	275
Income taxes (benefit)	32	60	74	106
Income from continuing operations before noncontrolling interests	55	91	126	169
Inter-segment revenue	2	3	4	5
Average Assets	10,822	8,686	11,218	8,770
BlackRock [Member]
Noninterest income	121	99	229	198
Total revenue	121	99	229	198
Income (loss) from continuing operations before income taxes and noncontrolling interests	121	99	229	198
Income taxes (benefit)	28	22	50	44
Income from continuing operations before noncontrolling interests	93	77	179	154
Inter-segment revenue	4	7	8	11
Average Assets	5,596	6,125	5,596	6,125
Distressed Assets Portfolio [Member]
Net interest income	257	348	493	690
Noninterest income	13	10	22	(2)
Total revenue	270	358	515	688
Provision for credit losses (benefit)	81	404	233	569
Other noninterest expense	56	75	109	123
Income (loss) from continuing operations before income taxes and noncontrolling interests	133	(121)	173	(4)
Income taxes (benefit)	49	(42)	64	2
Income from continuing operations before noncontrolling interests	84	(79)	109	(6)
Inter-segment revenue	(2)	(4)	(5)	(7)
Average Assets	13,370	18,516	13,743	19,009
Other [Member]
Net interest income	147	155	371	304
Noninterest income	186	225	432	343
Total revenue	333	380	803	647
Provision for credit losses (benefit)	14	36	35	54
Depreciation and amortization	68	71	137	146
Other noninterest expense	280	171	485	464
Income (loss) from continuing operations before income taxes and noncontrolling interests	(29)	102	146	(17)
Income taxes (benefit)	(169)	(35)	(187)	(143)
Income from continuing operations before noncontrolling interests	140	137	333	126
Inter-segment revenue	(14)	(12)	(23)	(35)
Average Assets	79,895	79,014	80,271	78,356
Consolidated [Member]
Net interest income	2,150	2,435	4,326	4,814
Noninterest income	1,452	1,477	2,907	2,861
Total revenue	3,602	3,912	7,233	7,675
Provision for credit losses (benefit)	280	823	701	1,574
Depreciation and amortization	163	178	334	361
Other noninterest expense	2,013	1,824	3,912	3,754
Income (loss) from continuing operations before income taxes and noncontrolling interests	1,146	1,087	2,286	1,986
Income taxes (benefit)	234	306	542	557
Income from continuing operations before noncontrolling interests	912	781	1,744	1,429
Average Assets	$ 261,106	$ 264,366	$ 261,826	$ 265,749