Segment Reporting (Table) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net interest income	$ 2,052,000,000	$ 2,129,000,000	$ 4,124,000,000	$ 4,324,000,000
Noninterest income	1,814,000,000	1,681,000,000	3,473,000,000	3,263,000,000
Total revenue	3,866,000,000	3,810,000,000	7,597,000,000	7,587,000,000
Provision for credit losses (benefit)	46,000,000	72,000,000	100,000,000	166,000,000
Depreciation and amortization	201,000,000	185,000,000	394,000,000	366,000,000
Other noninterest expense	2,165,000,000	2,143,000,000	4,321,000,000	4,226,000,000
Income (loss) before income taxes and noncontrolling interests	1,454,000,000	1,410,000,000	2,782,000,000	2,829,000,000
Income taxes	410,000,000	358,000,000	734,000,000	717,000,000
Net income (loss)	1,044,000,000	1,052,000,000	2,048,000,000	2,112,000,000
Average Assets	352,640,000,000	322,520,000,000	350,361,000,000	321,049,000,000
Retail Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	1,045,000,000	973,000,000	2,082,000,000	1,953,000,000
Noninterest income	590,000,000	541,000,000	1,078,000,000	1,055,000,000
Total revenue	1,635,000,000	1,514,000,000	3,160,000,000	3,008,000,000
Provision for credit losses (benefit)	45,000,000	4,000,000	94,000,000	149,000,000
Depreciation and amortization	42,000,000	44,000,000	85,000,000	88,000,000
Other noninterest expense	1,168,000,000	1,111,000,000	2,283,000,000	2,167,000,000
Income (loss) before income taxes and noncontrolling interests	380,000,000	355,000,000	698,000,000	604,000,000
Income taxes	139,000,000	130,000,000	255,000,000	221,000,000
Net income (loss)	241,000,000	225,000,000	443,000,000	383,000,000
Inter-segment revenue	1,000,000	1,000,000	1,000,000	2,000,000
Average Assets	73,369,000,000	75,203,000,000	73,691,000,000	75,559,000,000
Corporate & Institutional Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	837,000,000	889,000,000	1,660,000,000	1,791,000,000
Noninterest income	492,000,000	427,000,000	921,000,000	791,000,000
Total revenue	1,329,000,000	1,316,000,000	2,581,000,000	2,582,000,000
Provision for credit losses (benefit)	20,000,000	103,000,000	37,000,000	90,000,000
Depreciation and amortization	37,000,000	32,000,000	73,000,000	63,000,000
Other noninterest expense	510,000,000	472,000,000	988,000,000	929,000,000
Income (loss) before income taxes and noncontrolling interests	762,000,000	709,000,000	1,483,000,000	1,500,000,000
Income taxes	254,000,000	239,000,000	493,000,000	507,000,000
Net income (loss)	508,000,000	470,000,000	990,000,000	993,000,000
Inter-segment revenue	11,000,000	7,000,000	13,000,000	5,000,000
Average Assets	132,239,000,000	122,025,000,000	131,711,000,000	119,992,000,000
Asset Management Group [Member]
Segment Reporting Information [Line Items]
Net interest income	71,000,000	72,000,000	144,000,000	143,000,000
Noninterest income	243,000,000	207,000,000	451,000,000	406,000,000
Total revenue	314,000,000	279,000,000	595,000,000	549,000,000
Provision for credit losses (benefit)	1,000,000	(6,000,000)	13,000,000	6,000,000
Depreciation and amortization	12,000,000	11,000,000	23,000,000	21,000,000
Other noninterest expense	203,000,000	191,000,000	402,000,000	380,000,000
Income (loss) before income taxes and noncontrolling interests	98,000,000	83,000,000	157,000,000	142,000,000
Income taxes	36,000,000	30,000,000	58,000,000	52,000,000
Net income (loss)	62,000,000	53,000,000	99,000,000	90,000,000
Inter-segment revenue	3,000,000	3,000,000	5,000,000	6,000,000
Average Assets	8,005,000,000	7,685,000,000	7,974,000,000	7,642,000,000
Residential Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	30,000,000	37,000,000	60,000,000	77,000,000
Noninterest income	176,000,000	190,000,000	353,000,000	356,000,000
Total revenue	206,000,000	227,000,000	413,000,000	433,000,000
Provision for credit losses (benefit)	(2,000,000)	1,000,000
Depreciation and amortization	4,000,000	3,000,000	7,000,000	6,000,000
Other noninterest expense	174,000,000	166,000,000	332,000,000	376,000,000
Income (loss) before income taxes and noncontrolling interests	30,000,000	57,000,000	74,000,000	51,000,000
Income taxes	11,000,000	21,000,000	27,000,000	19,000,000
Net income (loss)	19,000,000	36,000,000	47,000,000	32,000,000
Inter-segment revenue	4,000,000	8,000,000	9,000,000	12,000,000
Average Assets	7,136,000,000	7,486,000,000	7,190,000,000	8,128,000,000
BlackRock [Member]
Segment Reporting Information [Line Items]
Noninterest income	175,000,000	172,000,000	351,000,000	332,000,000
Total revenue	175,000,000	172,000,000	351,000,000	332,000,000
Income (loss) before income taxes and noncontrolling interests	175,000,000	172,000,000	351,000,000	332,000,000
Income taxes	40,000,000	42,000,000	82,000,000	79,000,000
Net income (loss)	135,000,000	130,000,000	269,000,000	253,000,000
Inter-segment revenue	4,000,000	4,000,000	8,000,000	8,000,000
Average Assets	6,760,000,000	6,400,000,000	6,760,000,000	6,400,000,000
Non Strategic Assets [Member]
Segment Reporting Information [Line Items]
Net interest income	100,000,000	137,000,000	212,000,000	279,000,000
Noninterest income	9,000,000	10,000,000	18,000,000	16,000,000
Total revenue	109,000,000	147,000,000	230,000,000	295,000,000
Provision for credit losses (benefit)	(5,000,000)	(39,000,000)	(36,000,000)	(91,000,000)
Other noninterest expense	26,000,000	30,000,000	50,000,000	56,000,000
Income (loss) before income taxes and noncontrolling interests	88,000,000	156,000,000	216,000,000	330,000,000
Income taxes	32,000,000	57,000,000	79,000,000	121,000,000
Net income (loss)	56,000,000	99,000,000	137,000,000	209,000,000
Inter-segment revenue	(2,000,000)	(5,000,000)	(4,000,000)	(8,000,000)
Average Assets	6,914,000,000	8,577,000,000	7,094,000,000	8,732,000,000
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net interest income	(31,000,000)	21,000,000	(34,000,000)	81,000,000
Noninterest income	129,000,000	134,000,000	301,000,000	307,000,000
Total revenue	98,000,000	155,000,000	267,000,000	388,000,000
Provision for credit losses (benefit)	(13,000,000)	9,000,000	(8,000,000)	12,000,000
Depreciation and amortization	106,000,000	95,000,000	206,000,000	188,000,000
Other noninterest expense	84,000,000	173,000,000	266,000,000	318,000,000
Income (loss) before income taxes and noncontrolling interests	(79,000,000)	(122,000,000)	(197,000,000)	(130,000,000)
Income taxes	(102,000,000)	(161,000,000)	(260,000,000)	(282,000,000)
Net income (loss)	23,000,000	39,000,000	63,000,000	152,000,000
Inter-segment revenue	(21,000,000)	(18,000,000)	(32,000,000)	(25,000,000)
Average Assets	$ 118,217,000,000	$ 95,144,000,000	$ 115,941,000,000	$ 94,596,000,000