Fair Value Measurement - Recurring Basis (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	$ 1,332,731,000,000	$ 1,180,467,000,000
Amounts netted on the Consolidated balance sheets	(1,253,756,000,000)	(1,114,708,000,000)
Derivative receivables balance	78,975,000,000	65,759,000,000
Trading assets	398,988,000,000	374,664,000,000
Available-for-sale securities	298,752,000,000	329,977,000,000
Mortgage servicing rights	7,436,000,000	9,614,000,000	7,614,000,000	7,223,000,000
Gross derivative payables	1,315,076,000,000	1,160,149,000,000
Derivative, netting adjustments	(1,243,960,000,000)	(1,102,835,000,000)
Derivative payables	71,116,000,000	57,314,000,000
Fair value assets and liabilities measured on recurring basis - supplemental data
Reduction in level 3 derivative receivable and derivative payable balances	2,500,000,000	7,600,000,000
Costs of the private equity investment portfolio	6,000,000,000	8,000,000,000
Interest rate contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	956,523,000,000	854,679,000,000
Amounts netted on the Consolidated balance sheets	(922,798,000,000)	(828,897,000,000)
Derivative receivables balance	33,725,000,000	25,782,000,000
Gross derivative payables	924,645,000,000	825,354,000,000
Derivative, netting adjustments	(906,900,000,000)	(812,071,000,000)
Derivative payables	17,745,000,000	13,283,000,000
Credit derivatives
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	76,842,000,000	83,520,000,000
Amounts netted on the Consolidated balance sheets	(75,004,000,000)	(82,004,000,000)
Derivative receivables balance	1,838,000,000	1,516,000,000
Gross derivative payables	75,895,000,000	82,402,000,000
Derivative, netting adjustments	(74,302,000,000)	(80,121,000,000)
Derivative payables	1,593,000,000	2,281,000,000
Foreign exchange contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	208,921,000,000	153,599,000,000
Amounts netted on the Consolidated balance sheets	(187,668,000,000)	(136,809,000,000)
Derivative receivables balance	21,253,000,000	16,790,000,000
Gross derivative payables	218,348,000,000	160,125,000,000
Derivative, netting adjustments	(195,378,000,000)	(144,178,000,000)
Derivative payables	22,970,000,000	15,947,000,000
Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	46,792,000,000	52,931,000,000
Amounts netted on the Consolidated balance sheets	(38,615,000,000)	(40,704,000,000)
Derivative receivables balance	8,177,000,000	12,227,000,000
Gross derivative payables	50,565,000,000	54,654,000,000
Derivative, netting adjustments	(38,825,000,000)	(39,935,000,000)
Derivative payables	11,740,000,000	14,719,000,000
Commodity contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	43,653,000,000	35,738,000,000
Amounts netted on the Consolidated balance sheets	(29,671,000,000)	(26,294,000,000)
Derivative receivables balance	13,982,000,000	9,444,000,000
Gross derivative payables	45,623,000,000	37,614,000,000
Derivative, netting adjustments	(28,555,000,000)	(26,530,000,000)
Derivative payables	17,068,000,000	11,084,000,000
US government-sponsored and enterprises obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	59,300,000,000	67,000,000,000
Residential mortgage
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	17,000,000,000	14,800,000,000
Commercial loan
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	5,800,000,000	2,100,000,000
Residential conforming mortgage intended for sale to government agency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	7,700,000,000	6,000,000,000
Reverse mortgage
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	3,400,000,000	3,600,000,000
Recurring
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	28,585,000,000	25,135,000,000
Securities borrowed	992,000,000	3,739,000,000
Trading assets	320,013,000,000	308,905,000,000
Amounts netted on the Consolidated balance sheets	(1,253,756,000,000)	(1,114,708,000,000)
Derivative receivables balance	78,975,000,000	65,759,000,000
Trading assets	398,988,000,000	374,664,000,000
Available-for-sale securities	298,752,000,000	329,977,000,000
Loans, at fair value	2,611,000,000	2,011,000,000
Mortgage servicing rights	7,436,000,000	9,614,000,000
Total assets measured at fair value on a recurring basis	749,730,000,000	760,327,000,000
Deposits	8,807,000,000	6,624,000,000
Federal funds purchased and securities loaned or sold under repurchase agreements	2,979,000,000	5,426,000,000
Other borrowed funds	14,739,000,000	13,306,000,000
Trading liabilities excluding derivatives	81,699,000,000	80,430,000,000
Derivative, netting adjustments	(1,243,960,000,000)	(1,102,835,000,000)
Derivative payables	71,116,000,000	57,314,000,000
Trading liabilities	152,815,000,000	137,744,000,000
Accounts payable and other liabilities	36,000,000	25,000,000
Beneficial interests issued by consolidated VIEs, at fair value	2,162,000,000	1,996,000,000
Long-term debt	30,226,000,000	28,878,000,000
Total liabilities measured at fair value on a recurring basis	211,764,000,000	193,999,000,000
Fair value assets and liabilities measured on recurring basis - supplemental data
Investment valued at net asset value	1,800,000,000	3,200,000,000
Recurring | Interest rate contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(922,798,000,000)	(828,897,000,000)
Derivative receivables balance	33,725,000,000	25,782,000,000
Derivative, netting adjustments	(906,900,000,000)	(812,071,000,000)
Derivative payables	17,745,000,000	13,283,000,000
Recurring | Credit derivatives
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(75,004,000,000)	(82,004,000,000)
Derivative receivables balance	1,838,000,000	1,516,000,000
Derivative, netting adjustments	(74,302,000,000)	(80,121,000,000)
Derivative payables	1,593,000,000	2,281,000,000
Recurring | Foreign exchange contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(187,668,000,000)	(136,809,000,000)
Derivative receivables balance	21,253,000,000	16,790,000,000
Derivative, netting adjustments	(195,378,000,000)	(144,178,000,000)
Derivative payables	22,970,000,000	15,947,000,000
Recurring | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(38,615,000,000)	(40,704,000,000)
Derivative receivables balance	8,177,000,000	12,227,000,000
Derivative, netting adjustments	(38,825,000,000)	(39,935,000,000)
Derivative payables	11,740,000,000	14,719,000,000
Recurring | Commodity contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(29,671,000,000)	(26,294,000,000)
Derivative receivables balance	13,982,000,000	9,444,000,000
Derivative, netting adjustments	(28,555,000,000)	(26,530,000,000)
Derivative payables	17,068,000,000	11,084,000,000
Recurring | All other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	6,619,000,000	7,678,000,000
Recurring | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	12,366,000,000	15,187,000,000
Recurring | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	5,747,000,000	7,509,000,000
Recurring | US government-sponsored and enterprises obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	84,100,000,000	91,500,000,000
Recurring | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	199,650,000,000	181,551,000,000
Recurring | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	36,117,000,000	30,369,000,000
Available-for-sale securities	137,322,000,000	156,709,000,000
Recurring | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	32,840,000,000	26,591,000,000
Available-for-sale securities	65,319,000,000	77,815,000,000
Recurring | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	2,044,000,000	2,475,000,000
Available-for-sale securities	50,895,000,000	62,469,000,000
Recurring | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,233,000,000	1,303,000,000
Available-for-sale securities	21,108,000,000	16,425,000,000
Recurring | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	26,276,000,000	25,480,000,000
Available-for-sale securities	13,645,000,000	21,389,000,000
Recurring | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	10,571,000,000	7,920,000,000
Available-for-sale securities	30,068,000,000	29,461,000,000
Recurring | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	1,103,000,000	1,041,000,000
Recurring | Certificates of deposit, bankers’ acceptances and commercial paper
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,429,000,000	3,071,000,000
Recurring | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	53,450,000,000	48,284,000,000
Available-for-sale securities	52,743,000,000	56,248,000,000
Recurring | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	31,088,000,000	30,722,000,000
Available-for-sale securities	18,532,000,000	21,512,000,000
Recurring | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	36,367,000,000	30,786,000,000
Recurring | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	4,352,000,000	4,919,000,000
Recurring | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	30,194,000,000	28,230,000,000
Recurring | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	12,615,000,000	12,245,000,000
Recurring | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	106,069,000,000	109,506,000,000
Available-for-sale securities	2,530,000,000	3,142,000,000
Recurring | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	4,482,000,000	10,189,000,000
Recurring | Other debt and equity instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	9,812,000,000	7,659,000,000
Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	0	0
Securities borrowed	0	0
Trading assets	151,313,000,000	153,334,000,000
Gross derivative receivables	1,478,000,000	1,173,000,000
Trading assets	152,791,000,000	154,507,000,000
Available-for-sale securities	40,195,000,000	49,881,000,000
Loans, at fair value	0	0
Mortgage servicing rights	0	0
Total assets measured at fair value on a recurring basis	197,652,000,000	209,207,000,000
Deposits	0	0
Federal funds purchased and securities loaned or sold under repurchase agreements	0	0
Other borrowed funds	0	0
Trading liabilities excluding derivatives	62,914,000,000	61,262,000,000
Gross derivative payables	1,386,000,000	1,162,000,000
Trading liabilities	64,300,000,000	62,424,000,000
Accounts payable and other liabilities	0	0
Beneficial interests issued by consolidated VIEs, at fair value	0	0
Long-term debt	0	0
Total liabilities measured at fair value on a recurring basis	64,300,000,000	62,424,000,000
Recurring | Level 1 | Interest rate contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	473,000,000	419,000,000
Gross derivative payables	499,000,000	321,000,000
Recurring | Level 1 | Credit derivatives
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	0	0
Gross derivative payables	0	0
Recurring | Level 1 | Foreign exchange contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	758,000,000	434,000,000
Gross derivative payables	746,000,000	443,000,000
Recurring | Level 1 | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	0	0
Gross derivative payables	0	0
Recurring | Level 1 | Commodity contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	247,000,000	320,000,000
Gross derivative payables	141,000,000	398,000,000
Recurring | Level 1 | All other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	4,018,000,000	4,213,000,000
Recurring | Level 1 | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	4,666,000,000	4,819,000,000
Recurring | Level 1 | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	648,000,000	606,000,000
Recurring | Level 1 | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	43,684,000,000	40,699,000,000
Recurring | Level 1 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	14,000,000	4,000,000
Available-for-sale securities	0	0
Recurring | Level 1 | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	14,000,000	4,000,000
Available-for-sale securities	0	0
Recurring | Level 1 | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 1 | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 1 | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	17,816,000,000	14,933,000,000
Available-for-sale securities	13,591,000,000	21,091,000,000
Recurring | Level 1 | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 1 | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 1 | Certificates of deposit, bankers’ acceptances and commercial paper
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 1 | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	25,854,000,000	25,762,000,000
Available-for-sale securities	24,074,000,000	25,648,000,000
Recurring | Level 1 | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 1 | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 1 | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 1 | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 1 | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 1 | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	104,890,000,000	107,667,000,000
Available-for-sale securities	2,530,000,000	3,142,000,000
Recurring | Level 1 | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	2,739,000,000	4,968,000,000
Recurring | Level 1 | Other debt and equity instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	28,585,000,000	25,135,000,000
Securities borrowed	992,000,000	3,739,000,000
Trading assets	146,211,000,000	128,347,000,000
Gross derivative receivables	1,318,688,000,000	1,160,725,000,000
Trading assets	1,464,899,000,000	1,289,072,000,000
Available-for-sale securities	257,520,000,000	277,774,000,000
Loans, at fair value	70,000,000	80,000,000
Mortgage servicing rights	0	0
Total assets measured at fair value on a recurring basis	1,754,920,000,000	1,596,518,000,000
Deposits	5,948,000,000	4,369,000,000
Federal funds purchased and securities loaned or sold under repurchase agreements	2,979,000,000	5,426,000,000
Other borrowed funds	13,286,000,000	11,232,000,000
Trading liabilities excluding derivatives	18,713,000,000	19,055,000,000
Gross derivative payables	1,299,064,000,000	1,140,744,000,000
Trading liabilities	1,317,777,000,000	1,159,799,000,000
Accounts payable and other liabilities	0	0
Beneficial interests issued by consolidated VIEs, at fair value	1,016,000,000	756,000,000
Long-term debt	18,349,000,000	18,870,000,000
Total liabilities measured at fair value on a recurring basis	1,359,355,000,000	1,200,452,000,000
Fair value assets and liabilities measured on recurring basis - supplemental data
Investment valued at net asset value	337,000,000	899,000,000
Recurring | Level 2 | Interest rate contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	951,901,000,000	848,862,000,000
Gross derivative payables	920,623,000,000	822,014,000,000
Recurring | Level 2 | Credit derivatives
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	73,853,000,000	79,754,000,000
Gross derivative payables	73,095,000,000	78,731,000,000
Recurring | Level 2 | Foreign exchange contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	205,887,000,000	151,521,000,000
Gross derivative payables	214,800,000,000	156,838,000,000
Recurring | Level 2 | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	44,240,000,000	45,892,000,000
Gross derivative payables	46,228,000,000	46,552,000,000
Recurring | Level 2 | Commodity contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	42,807,000,000	34,696,000,000
Gross derivative payables	44,318,000,000	36,609,000,000
Recurring | Level 2 | All other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	230,000,000	289,000,000
Recurring | Level 2 | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	2,854,000,000	718,000,000
Recurring | Level 2 | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	2,624,000,000	429,000,000
Recurring | Level 2 | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	134,960,000,000	116,517,000,000
Recurring | Level 2 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	34,212,000,000	28,202,000,000
Available-for-sale securities	137,193,000,000	155,475,000,000
Recurring | Level 2 | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	31,904,000,000	25,582,000,000
Available-for-sale securities	65,319,000,000	77,815,000,000
Recurring | Level 2 | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,381,000,000	1,749,000,000
Available-for-sale securities	50,865,000,000	61,760,000,000
Recurring | Level 2 | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	927,000,000	871,000,000
Available-for-sale securities	21,009,000,000	15,900,000,000
Recurring | Level 2 | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	8,460,000,000	10,547,000,000
Available-for-sale securities	54,000,000	298,000,000
Recurring | Level 2 | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	9,298,000,000	6,538,000,000
Available-for-sale securities	30,068,000,000	29,461,000,000
Recurring | Level 2 | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	1,103,000,000	1,041,000,000
Recurring | Level 2 | Certificates of deposit, bankers’ acceptances and commercial paper
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,429,000,000	3,071,000,000
Recurring | Level 2 | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	27,294,000,000	22,379,000,000
Available-for-sale securities	28,669,000,000	30,600,000,000
Recurring | Level 2 | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	28,099,000,000	24,802,000,000
Available-for-sale securities	18,532,000,000	21,512,000,000
Recurring | Level 2 | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	23,080,000,000	17,331,000,000
Recurring | Level 2 | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	3,088,000,000	3,647,000,000
Recurring | Level 2 | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	29,402,000,000	27,409,000,000
Recurring | Level 2 | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	12,499,000,000	11,978,000,000
Recurring | Level 2 | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	748,000,000	954,000,000
Available-for-sale securities	0	0
Recurring | Level 2 | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,741,000,000	5,217,000,000
Recurring | Level 2 | Other debt and equity instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	8,762,000,000	5,659,000,000
Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	0	0
Securities borrowed	0	0
Trading assets	22,489,000,000	27,224,000,000
Gross derivative receivables	12,565,000,000	18,569,000,000
Trading assets	35,054,000,000	45,793,000,000
Available-for-sale securities	1,037,000,000	2,322,000,000
Loans, at fair value	2,541,000,000	1,931,000,000
Mortgage servicing rights	7,436,000,000	9,614,000,000
Total assets measured at fair value on a recurring basis	50,914,000,000	69,310,000,000
Deposits	2,859,000,000	2,255,000,000
Federal funds purchased and securities loaned or sold under repurchase agreements	0	0
Other borrowed funds	1,453,000,000	2,074,000,000
Trading liabilities excluding derivatives	72,000,000	113,000,000
Gross derivative payables	14,626,000,000	18,243,000,000
Trading liabilities	14,698,000,000	18,356,000,000
Accounts payable and other liabilities	36,000,000	25,000,000
Beneficial interests issued by consolidated VIEs, at fair value	1,146,000,000	1,240,000,000
Long-term debt	11,877,000,000	10,008,000,000
Total liabilities measured at fair value on a recurring basis	32,069,000,000	33,958,000,000
Fair value assets and liabilities measured on recurring basis - supplemental data
Investment valued at net asset value	1,400,000,000	2,300,000,000
Recurring | Level 3 | Interest rate contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	4,149,000,000	5,398,000,000
Gross derivative payables	3,523,000,000	3,019,000,000
Recurring | Level 3 | Credit derivatives
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	2,989,000,000	3,766,000,000
Gross derivative payables	2,800,000,000	3,671,000,000
Recurring | Level 3 | Foreign exchange contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	2,276,000,000	1,644,000,000
Gross derivative payables	2,802,000,000	2,844,000,000
Recurring | Level 3 | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	2,552,000,000	7,039,000,000
Gross derivative payables	4,337,000,000	8,102,000,000
Recurring | Level 3 | Commodity contracts
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	599,000,000	722,000,000
Gross derivative payables	1,164,000,000	607,000,000
Recurring | Level 3 | All other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	2,371,000,000	3,176,000,000
Recurring | Level 3 | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	4,846,000,000	9,650,000,000
Recurring | Level 3 | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	2,475,000,000	6,474,000,000
Recurring | Level 3 | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	21,006,000,000	24,335,000,000
Recurring | Level 3 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,891,000,000	2,163,000,000
Available-for-sale securities	129,000,000	1,234,000,000
Recurring | Level 3 | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	922,000,000	1,005,000,000
Available-for-sale securities	0	0
Recurring | Level 3 | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	663,000,000	726,000,000
Available-for-sale securities	30,000,000	709,000,000
Recurring | Level 3 | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	306,000,000	432,000,000
Available-for-sale securities	99,000,000	525,000,000
Recurring | Level 3 | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 3 | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,273,000,000	1,382,000,000
Available-for-sale securities	0	0
Recurring | Level 3 | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 3 | Certificates of deposit, bankers’ acceptances and commercial paper
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 3 | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	302,000,000	143,000,000
Available-for-sale securities	0	0
Recurring | Level 3 | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	2,989,000,000	5,920,000,000
Available-for-sale securities	0	0
Recurring | Level 3 | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	13,287,000,000	13,455,000,000
Recurring | Level 3 | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,264,000,000	1,272,000,000
Recurring | Level 3 | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	792,000,000	821,000,000
Recurring | Level 3 | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	116,000,000	267,000,000
Recurring | Level 3 | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	431,000,000	885,000,000
Available-for-sale securities	0	0
Recurring | Level 3 | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	2,000,000	4,000,000
Recurring | Level 3 | Other debt and equity instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	$ 1,050,000,000	$ 2,000,000,000