Segment Reporting (Table) (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment Reporting Information [Line Items]
Net interest income	$ 2,104,000,000		$ 2,234,000,000		$ 6,428,000,000		$ 6,881,000,000
Noninterest income	1,737,000,000		1,686,000,000		5,000,000,000		5,058,000,000
Total revenue	3,841,000,000		3,920,000,000		11,428,000,000		11,939,000,000
Provision for credit losses (benefit)	55,000,000		137,000,000		221,000,000		530,000,000
Depreciation and amortization	194,000,000		179,000,000		560,000,000		531,000,000
Other noninterest expense	2,163,000,000		2,215,000,000		6,389,000,000		6,636,000,000
Income (loss) before income taxes and noncontrolling interests	1,429,000,000		1,389,000,000		4,258,000,000		4,242,000,000
Income taxes	391,000,000	[1]	361,000,000	[1]	1,108,000,000	[1]	1,104,000,000	[1]
Net income (loss)	1,038,000,000	[1]	1,028,000,000	[1]	3,150,000,000	[1]	3,138,000,000	[1]
Average Assets	329,445,000,000		303,200,000,000		323,878,000,000		302,832,000,000
Retail Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	983,000,000		1,005,000,000		2,936,000,000		3,066,000,000
Noninterest income	536,000,000		557,000,000		1,591,000,000		1,533,000,000
Total revenue	1,519,000,000		1,562,000,000		4,527,000,000		4,599,000,000
Provision for credit losses (benefit)	74,000,000		152,000,000		223,000,000		462,000,000
Depreciation and amortization	43,000,000		47,000,000		131,000,000		139,000,000
Other noninterest expense	1,132,000,000		1,104,000,000		3,299,000,000		3,299,000,000
Income (loss) before income taxes and noncontrolling interests	270,000,000		259,000,000		874,000,000		699,000,000
Income taxes	97,000,000		94,000,000		318,000,000		256,000,000
Net income (loss)	173,000,000		165,000,000		556,000,000		443,000,000
Inter-segment revenue	2,000,000		0		4,000,000		2,000,000
Average Assets	74,682,000,000		75,215,000,000		75,264,000,000		74,620,000,000
Corporate & Institutional Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	890,000,000		914,000,000		2,681,000,000		2,752,000,000
Noninterest income	464,000,000		411,000,000		1,255,000,000		1,273,000,000
Total revenue	1,354,000,000		1,325,000,000		3,936,000,000		4,025,000,000
Provision for credit losses (benefit)	(4,000,000)		30,000,000		86,000,000		4,000,000
Depreciation and amortization	33,000,000		33,000,000		96,000,000		97,000,000
Other noninterest expense	495,000,000		462,000,000		1,424,000,000		1,377,000,000
Income (loss) before income taxes and noncontrolling interests	830,000,000		800,000,000		2,330,000,000		2,547,000,000
Income taxes	281,000,000		258,000,000		788,000,000		852,000,000
Net income (loss)	549,000,000		542,000,000		1,542,000,000		1,695,000,000
Inter-segment revenue	13,000,000		2,000,000		18,000,000		13,000,000
Average Assets	123,671,000,000		112,567,000,000		121,232,000,000		112,152,000,000
Asset Management Group [Member]
Segment Reporting Information [Line Items]
Net interest income	72,000,000		74,000,000		215,000,000		217,000,000
Noninterest income	205,000,000		188,000,000		611,000,000		554,000,000
Total revenue	277,000,000		262,000,000		826,000,000		771,000,000
Provision for credit losses (benefit)	(4,000,000)		(4,000,000)		2,000,000		2,000,000
Depreciation and amortization	10,000,000		11,000,000		31,000,000		32,000,000
Other noninterest expense	199,000,000		181,000,000		579,000,000		538,000,000
Income (loss) before income taxes and noncontrolling interests	72,000,000		74,000,000		214,000,000		199,000,000
Income taxes	26,000,000		27,000,000		78,000,000		73,000,000
Net income (loss)	46,000,000		47,000,000		136,000,000		126,000,000
Inter-segment revenue	3,000,000		3,000,000		9,000,000		9,000,000
Average Assets	7,775,000,000		7,445,000,000		7,687,000,000		7,289,000,000
Residential Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	38,000,000		46,000,000		115,000,000		145,000,000
Noninterest income	147,000,000		208,000,000		503,000,000		628,000,000
Total revenue	185,000,000		254,000,000		618,000,000		773,000,000
Provision for credit losses (benefit)	(1,000,000)		0		(1,000,000)		24,000,000
Depreciation and amortization	3,000,000		2,000,000		9,000,000		8,000,000
Other noninterest expense	165,000,000		208,000,000		541,000,000		594,000,000
Income (loss) before income taxes and noncontrolling interests	18,000,000		44,000,000		69,000,000		147,000,000
Income taxes	6,000,000		16,000,000		25,000,000		54,000,000
Net income (loss)	12,000,000		28,000,000		44,000,000		93,000,000
Inter-segment revenue	13,000,000		2,000,000		25,000,000		5,000,000
Average Assets	7,418,000,000		9,317,000,000		7,889,000,000		10,170,000,000
BlackRock [Member]
Segment Reporting Information [Line Items]
Noninterest income	196,000,000		155,000,000		528,000,000		442,000,000
Total revenue	196,000,000		155,000,000		528,000,000		442,000,000
Income (loss) before income taxes and noncontrolling interests	196,000,000		155,000,000		528,000,000		442,000,000
Income taxes	50,000,000		37,000,000		129,000,000		104,000,000
Net income (loss)	146,000,000		118,000,000		399,000,000		338,000,000
Inter-segment revenue	4,000,000		4,000,000		12,000,000		12,000,000
Average Assets	6,562,000,000		6,102,000,000		6,562,000,000		6,102,000,000
Non Strategic Assets [Member]
Segment Reporting Information [Line Items]
Net interest income	146,000,000		161,000,000		425,000,000		528,000,000
Noninterest income	6,000,000		20,000,000		22,000,000		47,000,000
Total revenue	152,000,000		181,000,000		447,000,000		575,000,000
Provision for credit losses (benefit)	(8,000,000)		(43,000,000)		(99,000,000)		38,000,000
Other noninterest expense	30,000,000		33,000,000		86,000,000		126,000,000
Income (loss) before income taxes and noncontrolling interests	130,000,000		191,000,000		460,000,000		411,000,000
Income taxes	48,000,000		70,000,000		169,000,000		151,000,000
Net income (loss)	82,000,000		121,000,000		291,000,000		260,000,000
Inter-segment revenue	(7,000,000)		(2,000,000)		(15,000,000)		(7,000,000)
Average Assets	8,231,000,000		9,701,000,000		8,563,000,000		10,238,000,000
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net interest income	(25,000,000)		34,000,000		56,000,000		173,000,000
Noninterest income	183,000,000		147,000,000		490,000,000		581,000,000
Total revenue	158,000,000		181,000,000		546,000,000		754,000,000
Provision for credit losses (benefit)	(2,000,000)		2,000,000		10,000,000		0
Depreciation and amortization	105,000,000		86,000,000		293,000,000		255,000,000
Other noninterest expense	142,000,000		227,000,000		460,000,000		702,000,000
Income (loss) before income taxes and noncontrolling interests	(87,000,000)		(134,000,000)		(217,000,000)		(203,000,000)
Income taxes	(117,000,000)		(141,000,000)		(399,000,000)		(386,000,000)
Net income (loss)	30,000,000		7,000,000		182,000,000		183,000,000
Inter-segment revenue	(28,000,000)		(9,000,000)		(53,000,000)		(34,000,000)
Average Assets	$ 101,106,000,000		$ 82,853,000,000		$ 96,681,000,000		$ 82,261,000,000

[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.