Segment Reporting (Table) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Reporting Information [Line Items]
Net interest income	$ 2,129		$ 2,258		$ 4,324		$ 4,647
Noninterest income	1,681		1,806		3,263		3,372
Total revenue	3,810		4,064		7,587		8,019
Provision for credit losses (benefit)	72		157		166		393
Depreciation and amortization	185		177		366		352
Other noninterest expense	2,143		2,228		4,226		4,421
Income (loss) before income taxes and noncontrolling interests	1,410		1,502		2,829		2,853
Income taxes	358	[1]	387	[1]	717	[1]	743	[1]
Net income (loss)	1,052	[1]	1,115	[1]	2,112	[1]	2,110	[1]
Average Assets	322,520		301,933		321,049		302,646
Retail Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	973		1,012		1,953		2,061
Noninterest income	541		542		1,055		976
Total revenue	1,514		1,554		3,008		3,037
Provision for credit losses (benefit)	4		148		149		310
Depreciation and amortization	44		45		88		92
Other noninterest expense	1,111		1,111		2,167		2,195
Income (loss) before income taxes and noncontrolling interests	355		250		604		440
Income taxes	130		92		221		162
Net income (loss)	225		158		383		278
Inter-segment revenue	1		2		2		2
Average Assets	75,203		74,516		75,559		74,317
Corporate & Institutional Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	889		912		1,791		1,838
Noninterest income	427		477		791		862
Total revenue	1,316		1,389		2,582		2,700
Provision for credit losses (benefit)	103		(40)		90		(26)
Depreciation and amortization	32		32		63		64
Other noninterest expense	472		467		929		915
Income (loss) before income taxes and noncontrolling interests	709		930		1,500		1,747
Income taxes	239		318		507		594
Net income (loss)	470		612		993		1,153
Inter-segment revenue	7		5		5		11
Average Assets	122,025		112,207		119,992		111,941
Asset Management Group [Member]
Segment Reporting Information [Line Items]
Net interest income	72		70		143		143
Noninterest income	207		184		406		366
Total revenue	279		254		549		509
Provision for credit losses (benefit)	(6)		1		6		6
Depreciation and amortization	11		11		21		21
Other noninterest expense	191		184		380		357
Income (loss) before income taxes and noncontrolling interests	83		58		142		125
Income taxes	30		22		52		46
Net income (loss)	53		36		90		79
Inter-segment revenue	3		3		6		6
Average Assets	7,685		7,289		7,642		7,210
Residential Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	37		51		77		99
Noninterest income	190		177		356		420
Total revenue	227		228		433		519
Provision for credit losses (benefit)	1		4		0		24
Depreciation and amortization	3		3		6		6
Other noninterest expense	166		189		376		386
Income (loss) before income taxes and noncontrolling interests	57		32		51		103
Income taxes	21		12		19		38
Net income (loss)	36		20		32		65
Inter-segment revenue	8		2		12		3
Average Assets	7,486		10,407		8,128		10,604
BlackRock [Member]
Segment Reporting Information [Line Items]
Noninterest income	172		149		332		287
Total revenue	172		149		332		287
Income (loss) before income taxes and noncontrolling interests	172		149		332		287
Income taxes	42		37		79		67
Net income (loss)	130		112		253		220
Inter-segment revenue	4		4		8		8
Average Assets	6,400		5,982		6,400		5,982
Non Strategic Assets [Member]
Segment Reporting Information [Line Items]
Net interest income	137		164		279		367
Noninterest income	10		11		16		27
Total revenue	147		175		295		394
Provision for credit losses (benefit)	(39)		39		(91)		81
Other noninterest expense	30		41		56		93
Income (loss) before income taxes and noncontrolling interests	156		95		330		220
Income taxes	57		35		121		81
Net income (loss)	99		60		209		139
Inter-segment revenue	(5)		(3)		(8)		(5)
Average Assets	8,577		10,290		8,732		10,511
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net interest income	21		49		81		139
Noninterest income	134		266		307		434
Total revenue	155		315		388		573
Provision for credit losses (benefit)	9		5		12		(2)
Depreciation and amortization	95		86		188		169
Other noninterest expense	173		236		318		475
Income (loss) before income taxes and noncontrolling interests	(122)		(12)		(130)		(69)
Income taxes	(161)		(129)		(282)		(245)
Net income (loss)	39		117		152		176
Inter-segment revenue	(18)		(13)		(25)		(25)
Average Assets	$ 95,144		$ 81,242		$ 94,596		$ 82,081

[1] Amounts for 2013 periods have been updated to reflect the first quarter 2014 adoption of Accounting Standards Update (ASU) 2014-01 related to investments in low income housing tax credits.