Derivative Instruments - Derivatives Netting (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	$ 1,312,014,000,000	$ 1,164,733,000,000
Amounts netted on the Consolidated balance sheets	(1,253,756,000,000)	(1,114,708,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	58,258,000,000	50,025,000,000
Derivative receivables where an appropriate legal opinion has not been either sought or obtained	20,717,000,000	15,734,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Gross derivative receivables	1,332,731,000,000	1,180,467,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Net derivative receivables	78,975,000,000	65,759,000,000
Net cash collateral payables	74,000,000,000	63,900,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	1,296,006,000,000	1,144,452,000,000
Amounts netted on the Consolidated balance sheets	(1,243,960,000,000)	(1,102,835,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	52,046,000,000	41,617,000,000
Derivative payables where an appropriate legal opinion has not been either sought or obtained	19,070,000,000	15,697,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Gross derivative payables	1,315,076,000,000	1,160,149,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Net derivative payables	71,116,000,000	57,314,000,000
Netted cash collateral receivables	64,200,000,000	52,100,000,000
Interest rate contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	950,029,000,000	848,875,000,000
Amounts netted on the Consolidated balance sheets	(922,798,000,000)	(828,897,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	27,231,000,000	19,978,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Gross derivative receivables	956,523,000,000	854,679,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Net derivative receivables	33,725,000,000	25,782,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	920,688,000,000	822,548,000,000
Amounts netted on the Consolidated balance sheets	(906,900,000,000)	(812,071,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	13,788,000,000	10,477,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Gross derivative payables	924,645,000,000	825,354,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Net derivative payables	17,745,000,000	13,283,000,000
Interest rate contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	548,373,000,000	486,449,000,000
Amounts netted on the Consolidated balance sheets	(521,180,000,000)	(466,493,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	27,193,000,000	19,956,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	522,170,000,000	467,850,000,000
Amounts netted on the Consolidated balance sheets	(509,650,000,000)	(458,081,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	12,520,000,000	9,769,000,000
Interest rate contracts | OTC-cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	401,656,000,000	362,426,000,000
Amounts netted on the Consolidated balance sheets	(401,618,000,000)	(362,404,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	38,000,000	22,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	398,518,000,000	354,698,000,000
Amounts netted on the Consolidated balance sheets	(397,250,000,000)	(353,990,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	1,268,000,000	708,000,000
Interest rate contracts | Exchange traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative receivables with appropriate legal opinion, Net derivative receivables	0	0
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative payables with appropriate legal opinions, Net derivative payables	0	0
Credit derivatives
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	75,956,000,000	83,110,000,000
Amounts netted on the Consolidated balance sheets	(75,004,000,000)	(82,004,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	952,000,000	1,106,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Gross derivative receivables	76,842,000,000	83,520,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Net derivative receivables	1,838,000,000	1,516,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	74,830,000,000	81,729,000,000
Amounts netted on the Consolidated balance sheets	(74,302,000,000)	(80,121,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	528,000,000	1,608,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Gross derivative payables	75,895,000,000	82,402,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Net derivative payables	1,593,000,000	2,281,000,000
Credit derivatives | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	66,636,000,000	66,269,000,000
Amounts netted on the Consolidated balance sheets	(65,720,000,000)	(65,725,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	916,000,000	544,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	65,432,000,000	65,223,000,000
Amounts netted on the Consolidated balance sheets	(64,904,000,000)	(63,671,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	528,000,000	1,552,000,000
Credit derivatives | OTC-cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	9,320,000,000	16,841,000,000
Amounts netted on the Consolidated balance sheets	(9,284,000,000)	(16,279,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	36,000,000	562,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	9,398,000,000	16,506,000,000
Amounts netted on the Consolidated balance sheets	(9,398,000,000)	(16,450,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	0	56,000,000
Foreign exchange contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	202,573,000,000	148,999,000,000
Amounts netted on the Consolidated balance sheets	(187,668,000,000)	(136,809,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	14,905,000,000	12,190,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Gross derivative receivables	208,921,000,000	153,599,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Net derivative receivables	21,253,000,000	16,790,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	211,798,000,000	155,171,000,000
Amounts netted on the Consolidated balance sheets	(195,378,000,000)	(144,178,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	16,420,000,000	10,993,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Gross derivative payables	218,348,000,000	160,125,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Net derivative payables	22,970,000,000	15,947,000,000
Foreign exchange contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	202,537,000,000	148,953,000,000
Amounts netted on the Consolidated balance sheets	(187,634,000,000)	(136,763,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	14,903,000,000	12,190,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	211,732,000,000	155,110,000,000
Amounts netted on the Consolidated balance sheets	(195,312,000,000)	(144,119,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	16,420,000,000	10,991,000,000
Foreign exchange contracts | OTC-cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	36,000,000	46,000,000
Amounts netted on the Consolidated balance sheets	(34,000,000)	(46,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	2,000,000	0
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	66,000,000	61,000,000
Amounts netted on the Consolidated balance sheets	(66,000,000)	(59,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	0	2,000,000
Foreign exchange contracts | Exchange traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative receivables with appropriate legal opinion, Net derivative receivables	0	0
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative payables with appropriate legal opinions, Net derivative payables	0	0
Equity contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	41,401,000,000	49,602,000,000
Amounts netted on the Consolidated balance sheets	(38,615,000,000)	(40,704,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	2,786,000,000	8,898,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Gross derivative receivables	46,792,000,000	52,931,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Net derivative receivables	8,177,000,000	12,227,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	45,075,000,000	50,644,000,000
Amounts netted on the Consolidated balance sheets	(38,825,000,000)	(39,935,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	6,250,000,000	10,709,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Gross derivative payables	50,565,000,000	54,654,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Net derivative payables	11,740,000,000	14,719,000,000
Equity contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	23,258,000,000	31,870,000,000
Amounts netted on the Consolidated balance sheets	(22,826,000,000)	(29,289,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	432,000,000	2,581,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	27,908,000,000	33,295,000,000
Amounts netted on the Consolidated balance sheets	(23,036,000,000)	(28,520,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	4,872,000,000	4,775,000,000
Equity contracts | OTC-cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative receivables with appropriate legal opinion, Net derivative receivables	0	0
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative payables with appropriate legal opinions, Net derivative payables	0	0
Equity contracts | Exchange traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	18,143,000,000	17,732,000,000
Amounts netted on the Consolidated balance sheets	(15,789,000,000)	(11,415,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	2,354,000,000	6,317,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	17,167,000,000	17,349,000,000
Amounts netted on the Consolidated balance sheets	(15,789,000,000)	(11,415,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	1,378,000,000	5,934,000,000
Commodity contracts
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	42,055,000,000	34,147,000,000
Amounts netted on the Consolidated balance sheets	(29,671,000,000)	(26,294,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	12,384,000,000	7,853,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Gross derivative receivables	43,653,000,000	35,738,000,000
Total derivative receivables recognized on the Consolidated Balance Sheets, Net derivative receivables	13,982,000,000	9,444,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	43,615,000,000	34,360,000,000
Amounts netted on the Consolidated balance sheets	(28,555,000,000)	(26,530,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	15,060,000,000	7,830,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Gross derivative payables	45,623,000,000	37,614,000,000
Total derivative payables recognized on the Consolidated Balance Sheets, Net derivative payables	17,068,000,000	11,084,000,000
Commodity contracts | OTC
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	22,555,000,000	21,619,000,000
Amounts netted on the Consolidated balance sheets	(14,327,000,000)	(15,082,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	8,228,000,000	6,537,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	25,129,000,000	21,993,000,000
Amounts netted on the Consolidated balance sheets	(13,211,000,000)	(15,318,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	11,918,000,000	6,675,000,000
Commodity contracts | OTC-cleared
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative receivables with appropriate legal opinion, Net derivative receivables	0	0
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	0	0
Amounts netted on the Consolidated balance sheets	0	0
Derivative payables with appropriate legal opinions, Net derivative payables	0	0
Commodity contracts | Exchange traded
Gross and Net Derivative Receivables by Contract and Settlement Type:
Derivative receivables with appropriate legal opinion, Gross derivative receivables	19,500,000,000	12,528,000,000
Amounts netted on the Consolidated balance sheets	(15,344,000,000)	(11,212,000,000)
Derivative receivables with appropriate legal opinion, Net derivative receivables	4,156,000,000	1,316,000,000
Gross and Net Derivative Payables by Contract and Settlement Type:
Derivative payables with appropriate legal opinions, Gross derivative payables	18,486,000,000	12,367,000,000
Amounts netted on the Consolidated balance sheets	(15,344,000,000)	(11,212,000,000)
Derivative payables with appropriate legal opinions, Net derivative payables	$ 3,142,000,000	$ 1,155,000,000