Segment Reporting (Table) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Net interest income	$ 2,062,000,000	$ 2,104,000,000	$ 6,186,000,000	$ 6,428,000,000
Noninterest income	1,713,000,000	1,737,000,000	5,186,000,000	5,000,000,000
Total revenue	3,775,000,000	3,841,000,000	11,372,000,000	11,428,000,000
Provision for credit losses (benefit)	81,000,000	55,000,000	181,000,000	221,000,000
Depreciation and amortization	201,000,000	194,000,000	595,000,000	560,000,000
Other noninterest expense	2,151,000,000	2,163,000,000	6,472,000,000	6,389,000,000
Income (loss) before income taxes and noncontrolling interests	1,342,000,000	1,429,000,000	4,124,000,000	4,258,000,000
Income taxes	269,000,000	391,000,000	1,003,000,000	1,108,000,000
Net income (loss)	1,073,000,000	1,038,000,000	3,121,000,000	3,150,000,000
Average Assets	358,587,000,000	329,445,000,000	353,133,000,000	323,878,000,000
Retail Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	1,068,000,000	983,000,000	3,150,000,000	2,936,000,000
Noninterest income	574,000,000	536,000,000	1,652,000,000	1,591,000,000
Total revenue	1,642,000,000	1,519,000,000	4,802,000,000	4,527,000,000
Provision for credit losses (benefit)	57,000,000	74,000,000	151,000,000	223,000,000
Depreciation and amortization	42,000,000	43,000,000	127,000,000	131,000,000
Other noninterest expense	1,148,000,000	1,132,000,000	3,431,000,000	3,299,000,000
Income (loss) before income taxes and noncontrolling interests	395,000,000	270,000,000	1,093,000,000	874,000,000
Income taxes	144,000,000	97,000,000	399,000,000	318,000,000
Net income (loss)	251,000,000	173,000,000	694,000,000	556,000,000
Inter-segment revenue	0	2,000,000	1,000,000	4,000,000
Average Assets	72,916,000,000	74,682,000,000	73,430,000,000	75,264,000,000
Corporate & Institutional Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	855,000,000	890,000,000	2,515,000,000	2,681,000,000
Noninterest income	476,000,000	464,000,000	1,397,000,000	1,255,000,000
Total revenue	1,331,000,000	1,354,000,000	3,912,000,000	3,936,000,000
Provision for credit losses (benefit)	46,000,000	(4,000,000)	83,000,000	86,000,000
Depreciation and amortization	36,000,000	33,000,000	109,000,000	96,000,000
Other noninterest expense	497,000,000	495,000,000	1,485,000,000	1,424,000,000
Income (loss) before income taxes and noncontrolling interests	752,000,000	830,000,000	2,235,000,000	2,330,000,000
Income taxes	250,000,000	281,000,000	743,000,000	788,000,000
Net income (loss)	502,000,000	549,000,000	1,492,000,000	1,542,000,000
Inter-segment revenue	7,000,000	13,000,000	20,000,000	18,000,000
Average Assets	131,613,000,000	123,671,000,000	131,678,000,000	121,232,000,000
Asset Management Group [Member]
Segment Reporting Information [Line Items]
Net interest income	71,000,000	72,000,000	215,000,000	215,000,000
Noninterest income	207,000,000	205,000,000	658,000,000	611,000,000
Total revenue	278,000,000	277,000,000	873,000,000	826,000,000
Provision for credit losses (benefit)	(2,000,000)	(4,000,000)	11,000,000	2,000,000
Depreciation and amortization	10,000,000	10,000,000	33,000,000	31,000,000
Other noninterest expense	201,000,000	199,000,000	603,000,000	579,000,000
Income (loss) before income taxes and noncontrolling interests	69,000,000	72,000,000	226,000,000	214,000,000
Income taxes	25,000,000	26,000,000	83,000,000	78,000,000
Net income (loss)	44,000,000	46,000,000	143,000,000	136,000,000
Inter-segment revenue	2,000,000	3,000,000	7,000,000	9,000,000
Average Assets	7,902,000,000	7,775,000,000	7,922,000,000	7,687,000,000
Residential Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	31,000,000	38,000,000	91,000,000	115,000,000
Noninterest income	135,000,000	147,000,000	488,000,000	503,000,000
Total revenue	166,000,000	185,000,000	579,000,000	618,000,000
Provision for credit losses (benefit)	2,000,000	(1,000,000)	2,000,000	(1,000,000)
Depreciation and amortization	4,000,000	3,000,000	11,000,000	9,000,000
Other noninterest expense	167,000,000	165,000,000	499,000,000	541,000,000
Income (loss) before income taxes and noncontrolling interests	(7,000,000)	18,000,000	67,000,000	69,000,000
Income taxes	(3,000,000)	6,000,000	24,000,000	25,000,000
Net income (loss)	(4,000,000)	12,000,000	43,000,000	44,000,000
Inter-segment revenue	5,000,000	13,000,000	14,000,000	25,000,000
Average Assets	6,513,000,000	7,418,000,000	6,962,000,000	7,889,000,000
BlackRock [Member]
Segment Reporting Information [Line Items]
Noninterest income	181,000,000	196,000,000	532,000,000	528,000,000
Total revenue	181,000,000	196,000,000	532,000,000	528,000,000
Income (loss) before income taxes and noncontrolling interests	181,000,000	196,000,000	532,000,000	528,000,000
Income taxes	42,000,000	50,000,000	125,000,000	129,000,000
Net income (loss)	139,000,000	146,000,000	407,000,000	399,000,000
Inter-segment revenue	3,000,000	4,000,000	11,000,000	12,000,000
Average Assets	6,813,000,000	6,562,000,000	6,813,000,000	6,562,000,000
Non Strategic Assets [Member]
Segment Reporting Information [Line Items]
Net interest income	90,000,000	146,000,000	302,000,000	425,000,000
Noninterest income	16,000,000	6,000,000	34,000,000	22,000,000
Total revenue	106,000,000	152,000,000	336,000,000	447,000,000
Provision for credit losses (benefit)	(25,000,000)	(8,000,000)	(61,000,000)	(99,000,000)
Other noninterest expense	23,000,000	30,000,000	73,000,000	86,000,000
Income (loss) before income taxes and noncontrolling interests	108,000,000	130,000,000	324,000,000	460,000,000
Income taxes	40,000,000	48,000,000	119,000,000	169,000,000
Net income (loss)	68,000,000	82,000,000	205,000,000	291,000,000
Inter-segment revenue	(2,000,000)	(7,000,000)	(6,000,000)	(15,000,000)
Average Assets	6,460,000,000	8,231,000,000	6,880,000,000	8,563,000,000
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net interest income	(53,000,000)	(25,000,000)	(87,000,000)	56,000,000
Noninterest income	124,000,000	183,000,000	425,000,000	490,000,000
Total revenue	71,000,000	158,000,000	338,000,000	546,000,000
Provision for credit losses (benefit)	3,000,000	(2,000,000)	(5,000,000)	10,000,000
Depreciation and amortization	109,000,000	105,000,000	315,000,000	293,000,000
Other noninterest expense	115,000,000	142,000,000	381,000,000	460,000,000
Income (loss) before income taxes and noncontrolling interests	(156,000,000)	(87,000,000)	(353,000,000)	(217,000,000)
Income taxes	(229,000,000)	(117,000,000)	(490,000,000)	(399,000,000)
Net income (loss)	73,000,000	30,000,000	137,000,000	182,000,000
Inter-segment revenue	(15,000,000)	(28,000,000)	(47,000,000)	(53,000,000)
Average Assets	$ 126,370,000,000	$ 101,106,000,000	$ 119,448,000,000	$ 96,681,000,000