Segment Reporting (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net interest income	$ 2,098	$ 2,072
Noninterest income	1,567	1,659
Total revenue	3,665	3,731
Provision for credit losses (benefit)	152	54
Depreciation and amortization	202	193
Other noninterest expense	2,079	2,156
Income (loss) before income taxes and noncontrolling interests	1,232	1,328
Income taxes	289	324
Net income (loss)	943	1,004
Average Assets	355,913	348,057
Retail Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	1,113	1,037
Noninterest income	537	488
Total revenue	1,650	1,525
Provision for credit losses (benefit)	77	49
Depreciation and amortization	40	43
Other noninterest expense	1,110	1,115
Income (loss) before income taxes and noncontrolling interests	423	318
Income taxes	155	116
Net income (loss)	268	202
Inter-segment revenue	2
Average Assets	72,216	74,017
Corporate & Institutional Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	838	823
Noninterest income	434	429
Total revenue	1,272	1,252
Provision for credit losses (benefit)	107	17
Depreciation and amortization	35	36
Other noninterest expense	486	478
Income (loss) before income taxes and noncontrolling interests	644	721
Income taxes	213	239
Net income (loss)	431	482
Inter-segment revenue	9	2
Average Assets	135,521	131,178
Asset Management Group [Member]
Segment Reporting Information [Line Items]
Net interest income	77	73
Noninterest income	203	208
Total revenue	280	281
Provision for credit losses (benefit)	(3)	12
Depreciation and amortization	11	11
Other noninterest expense	195	199
Income (loss) before income taxes and noncontrolling interests	77	59
Income taxes	28	22
Net income (loss)	49	37
Inter-segment revenue	2	2
Average Assets	7,887	7,943
Residential Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	25	30
Noninterest income	105	177
Total revenue	130	207
Provision for credit losses (benefit)	(1)	2
Depreciation and amortization	3	4
Other noninterest expense	149	157
Income (loss) before income taxes and noncontrolling interests	(21)	44
Income taxes	(8)	16
Net income (loss)	(13)	28
Inter-segment revenue	6	5
Average Assets	6,306	7,245
BlackRock [Member]
Segment Reporting Information [Line Items]
Noninterest income	141	175
Total revenue	141	175
Income (loss) before income taxes and noncontrolling interests	141	175
Income taxes	27	40
Net income (loss)	114	135
Inter-segment revenue	3	4
Average Assets	6,775	6,645
Non Strategic Assets [Member]
Segment Reporting Information [Line Items]
Net interest income	75	112
Noninterest income	22	9
Total revenue	97	121
Provision for credit losses (benefit)	(7)	(31)
Other noninterest expense	21	24
Income (loss) before income taxes and noncontrolling interests	83	128
Income taxes	31	47
Net income (loss)	52	81
Inter-segment revenue	(2)	(2)
Average Assets	5,816	7,276
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net interest income	(30)	(3)
Noninterest income	125	173
Total revenue	95	170
Provision for credit losses (benefit)	(21)	5
Depreciation and amortization	113	99
Other noninterest expense	118	183
Income (loss) before income taxes and noncontrolling interests	(115)	(117)
Income taxes	(157)	(156)
Net income (loss)	42	39
Inter-segment revenue	(20)	(11)
Average Assets	$ 121,392	$ 113,753