Fair Value Measurements - Reconciliation (Details)

v2.4.0.8

Fair Value Measurements - Reconciliation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended												3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended						3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended				3 Months Ended				9 Months Ended						3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Fair Value, Measurements, Recurring [Member]		Dec. 31, 2012 Fair Value, Measurements, Recurring [Member]		Sep. 30, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2012 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]		Sep. 30, 2012 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]	Sep. 30, 2013 Corporate securities, trading loans and other [Member]		Sep. 30, 2012 Corporate securities, trading loans and other [Member]		Sep. 30, 2013 Corporate securities, trading loans and other [Member]		Sep. 30, 2012 Corporate securities, trading loans and other [Member]		Sep. 30, 2012 Short-term borrowings [Member]		Sep. 30, 2012 Short-term borrowings [Member]		Sep. 30, 2013 Accrued expenses and other liabilities [Member]		Sep. 30, 2012 Accrued expenses and other liabilities [Member]		Sep. 30, 2013 Accrued expenses and other liabilities [Member]		Sep. 30, 2012 Accrued expenses and other liabilities [Member]		Sep. 30, 2013 Long-term debt [Member]		Sep. 30, 2012 Long-term debt [Member]		Sep. 30, 2013 Long-term debt [Member]		Sep. 30, 2012 Long-term debt [Member]		Sep. 30, 2013 Trading Account Assets [Member]		Sep. 30, 2012 Trading Account Assets [Member]		Sep. 30, 2013 Trading Account Assets [Member]		Sep. 30, 2012 Trading Account Assets [Member]		Sep. 30, 2013 Corporate securities, trading loans and other [Member]		Sep. 30, 2012 Corporate securities, trading loans and other [Member]		Sep. 30, 2013 Corporate securities, trading loans and other [Member]		Sep. 30, 2012 Corporate securities, trading loans and other [Member]		Sep. 30, 2013 Equity securities [Member]		Sep. 30, 2012 Equity securities [Member]		Sep. 30, 2013 Equity securities [Member]		Sep. 30, 2012 Equity securities [Member]		Sep. 30, 2013 Non-U.S. sovereign debt [Member]		Sep. 30, 2012 Non-U.S. sovereign debt [Member]		Sep. 30, 2013 Non-U.S. sovereign debt [Member]		Sep. 30, 2012 Non-U.S. sovereign debt [Member]		Sep. 30, 2013 Mortgage trading loans and ABS [Member]		Sep. 30, 2012 Mortgage trading loans and ABS [Member]		Sep. 30, 2013 Mortgage trading loans and ABS [Member]		Sep. 30, 2012 Mortgage trading loans and ABS [Member]		Sep. 30, 2013 Derivative assets [Member]		Sep. 30, 2012 Derivative assets [Member]		Sep. 30, 2013 Derivative assets [Member]		Sep. 30, 2012 Derivative assets [Member]		Sep. 30, 2013 Available-for-sale debt securities [Member]		Sep. 30, 2012 Available-for-sale debt securities [Member]		Sep. 30, 2013 Available-for-sale debt securities [Member]		Sep. 30, 2012 Available-for-sale debt securities [Member]		Sep. 30, 2012 Agency [Member]		Sep. 30, 2012 Non-Agency Residential MBS [Member]		Sep. 30, 2012 Non-Agency Residential MBS [Member]		Sep. 30, 2012 Non-Agency Commercial MBS [Member]		Sep. 30, 2013 Non-Agency Commercial MBS [Member]		Sep. 30, 2012 Non-Agency Commercial MBS [Member]		Sep. 30, 2013 Non United States Securities [Member]		Sep. 30, 2013 Non United States Securities [Member]		Mar. 31, 2013 Non United States Securities [Member]		Sep. 30, 2013 Corporate/Agency bonds [Member]		Sep. 30, 2012 Corporate/Agency bonds [Member]		Sep. 30, 2013 Corporate/Agency bonds [Member]		Sep. 30, 2012 Corporate/Agency bonds [Member]		Mar. 31, 2013 Corporate/Agency bonds [Member]		Sep. 30, 2013 Other taxable securities [Member]		Sep. 30, 2012 Other taxable securities [Member]		Sep. 30, 2013 Other taxable securities [Member]		Sep. 30, 2012 Other taxable securities [Member]		Sep. 30, 2013 Tax-exempt securities [Member]		Sep. 30, 2012 Tax-exempt securities [Member]		Sep. 30, 2013 Tax-exempt securities [Member]		Sep. 30, 2012 Tax-exempt securities [Member]		Sep. 30, 2013 Loans and leases [Member]		Sep. 30, 2012 Loans and leases [Member]		Sep. 30, 2013 Loans and leases [Member]		Sep. 30, 2012 Loans and leases [Member]		Sep. 30, 2013 Mortgage servicing rights [Member]		Sep. 30, 2012 Mortgage servicing rights [Member]		Sep. 30, 2013 Mortgage servicing rights [Member]		Sep. 30, 2012 Mortgage servicing rights [Member]		Sep. 30, 2013 Loans held-for-sale [Member]		Sep. 30, 2012 Loans held-for-sale [Member]		Sep. 30, 2013 Loans held-for-sale [Member]		Sep. 30, 2012 Loans held-for-sale [Member]		Sep. 30, 2013 Other assets [Member]		Sep. 30, 2012 Other assets [Member]		Sep. 30, 2013 Other assets [Member]		Sep. 30, 2012 Other assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Reclassification of Trading Account Assets - Corporate Securities, Trading Loans and Other to Trading Account Assets - Mortgage Trading Loans and ABS				$ 900
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs Level(3)
Balance, beginning																																											8,313	[1]	10,263	[2]	9,559	[3]	11,455	[2]	2,763	[1]	4,459	[2]	3,726	[3]	6,880	[2],[4]	464	[1]	597	[2]	545	[3]	544	[2]	401	[1]	389	[2]	353	[3]	342	[2]	4,685	[1]	4,818	[2],[5]	4,935	[3]	3,689	[2],[4]	1,173	[1],[6]	4,601	[2],[5]	1,468	[3],[7]	5,866	[2],[8]	5,042	[1]	5,816	[2]	5,091	[3]	8,012	[2]	37	[2]	1	[2]	860	[2]	24	[2]	10	[3]	40	[2]			0	[3]	0	[1]			93	[2]	92	[3]	162	[2]	8	[1]	4,157	[1]	4,558	[2]	3,928	[3]	4,265	[2]	877	[1]	1,140	[2]	1,061	[3]	2,648	[2]	1,901	[1],[10],[9]	1,635	[10],[2],[9]	2,287	[11],[12],[3]	2,744	[13],[14],[2]	5,827	[1],[10]	5,708	[10],[2]	5,716	[11],[3]	7,378	[14],[2]	2,153	[1],[9]	2,741	[2],[9]	2,733	[12],[3]	3,387	[13],[2]	1,700	[1],[15]	3,136	[16],[2]	3,129	[17],[3]	4,235	[18],[2]
Gains (Losses) in Earnings																																											141	[1]	202	[2]	531	[3]	415	[2]	133	[1]	69	[2]	256	[3]	192	[2],[4]	4	[1]	15	[2]	54	[3]	24	[2]	11	[1]	7	[2]	56	[3]	5	[2]	(7)	[1]	111	[2],[5]	165	[3]	194	[2],[4]	(499)	[1],[6]	(256)	[2],[5]	186	[3],[7]	17	[2],[8]	9	[1]	7	[2]	13	[3]	(3)	[2]		[2]	0	[2]	(69)	[2]		[2]		[3]		[2]	5	[1]	5	[3]							0	[3]	(2)	[2]			2	[1]	0	[2]	5	[3]	7	[2]	2	[1]	7	[2]	3	[3]	61	[2]	(20)	[1],[10],[9]	69	[10],[2],[9]	80	[11],[12],[3]	284	[13],[14],[2]	71	[1],[10]	(360)	[10],[2]	1,531	[11],[3]	(1,297)	[14],[2]	40	[1],[9]	86	[2],[9]	20	[12],[3]	265	[13],[2]	3	[1],[15]	24	[16],[2]	(324)	[17],[3]	(110)	[18],[2]
Gains (Losses) in OCI																																												[1]		[2]		[3]		[2]		[1]		[2]		[3]		[2],[4]		[1]		[2]		[3]		[2]		[1]		[2]		[3]		[2]		[1]		[2],[5]		[3]		[2],[4]		[1],[6]		[2],[5]		[3],[7]		[2],[8]	(1)	[1]	21	[2]	29	[3]	88	[2]		[2]	0	[2]	19	[2]		[2]		[3]		[2]		[1]		[3]				[1]	0	[2]	4	[3]	0	[2]			(2)	[1]	28	[2]	10	[3]	51	[2]	1	[1]	(7)	[2]	15	[3]	18	[2]		[1],[10],[9]		[10],[2],[9]		[11],[12],[3]		[13],[14],[2]		[1],[10]		[10],[2]		[11],[3]		[14],[2]		[1],[9]		[2],[9]		[12],[3]		[13],[2]		[1],[15]		[16],[2]		[17],[3]		[18],[2]
Gross Purchases																																											2,375	[1]	1,203	[2]	5,606	[3]	4,247	[2]	2,002	[1]	750	[2]	3,519	[3]	1,995	[2],[4]	20	[1]	43	[2]	77	[3]	167	[2]	3	[1]	30	[2]	29	[3]	338	[2]	350	[1]	380	[2],[5]	1,981	[3]	1,747	[2],[4]	126	[1],[6]	78	[2],[5]	509	[3],[7]	791	[2],[8]	215	[1]	600	[2]	826	[3]	1,556	[2]		[2]		[2]		[2]		[2]		[3]	0	[2]		[1]	1	[3]				[1]		[2]	0	[3]	(2)	[2]			215	[1]	600	[2]	825	[3]	1,558	[2]		[1]		[2]		[3]		[2]		[1],[10],[9]	317	[10],[2],[9]	71	[11],[12],[3]	317	[13],[14],[2]		[1],[10]		[10],[2]		[11],[3]		[14],[2]	0	[1],[9]	596	[2],[9]	8	[12],[3]	606	[13],[2]	1	[1],[15]	40	[16],[2]	43	[17],[3]	89	[18],[2]
Gross Sales	(729)	(15)	(1,774)	(113)																																							(1,365)	[1]	(1,251)	[2]	(4,769)	[3]	(4,931)	[2]	(892)	[1]	(848)	[2]	(2,817)	[3]	(3,498)	[2],[4]	(16)	[1]	(12)	[2]	(160)	[3]	(159)	[2]	(14)	[1]	(112)	[2]	(15)	[3]	(359)	[2]	(443)	[1]	(279)	[2],[5]	(1,777)	[3]	(915)	[2],[4]	(102)	[1],[6]	(211)	[2],[5]	(762)	[3],[7]	(833)	[2],[8]	0	[1]	(63)	[2]	(1)	[3]	(448)	[2]	0	[2]	0	[2]	(305)	[2]		[2]		[3]	(11)	[2]		[1]	(1)	[3]				[1]		[2]		[3]	0	[2]				[1]	0	[2]		[3]	0	[2]	0	[1]	(63)	[2]	0	[3]	(132)	[2]		[1],[10],[9]	(150)	[10],[2],[9]		[11],[12],[3]	(1,308)	[13],[14],[2]	(729)	[1],[10]	(15)	[10],[2]	(1,774)	[11],[3]	(113)	[14],[2]	0	[1],[9]	(19)	[2],[9]	(390)	[12],[3]	(40)	[13],[2]	(35)	[1],[15]	(183)	[16],[2]	(218)	[17],[3]	(950)	[18],[2]
Gross Issuances																																											22	[1]		[2]	22	[3]		[2]	22	[1]		[2]	22	[3]		[2],[4]		[1]		[2]		[3]		[2]		[1]		[2]		[3]		[2]		[1]		[2],[5]		[3]		[2],[4]		[1],[6]		[2],[5]		[3],[7]		[2],[8]		[1]		[2]		[3]		[2]		[2]		[2]		[2]		[2]		[3]		[2]		[1]		[3]				[1]		[2]		[3]		[2]				[1]		[2]		[3]		[2]		[1]		[2]		[3]		[2]	1,247	[1],[10],[9]	0	[10],[2],[9]	1,252	[11],[12],[3]		[13],[14],[2]	129	[1],[10]	100	[10],[2]	399	[11],[3]	268	[14],[2]	3	[1],[9]		[2],[9]	3	[12],[3]		[13],[2]		[1],[15]		[16],[2]		[17],[3]		[18],[2]
Gross Settlements																																											(389)	[1]	(238)	[2]	(1,351)	[3]	(1,209)	[2]	(205)	[1]	(101)	[2]	(444)	[3]	(846)	[2],[4]	(100)	[1]	(9)	[2]	(100)	[3]	27	[2]	(10)	[1]	(4)	[2]	(32)	[3]	(4)	[2]	(74)	[1]	(124)	[2],[5]	(775)	[3]	(386)	[2],[4]	(147)	[1],[6]	(918)	[2],[5]	(1,190)	[3],[7]	(2,228)	[2],[8]	(422)	[1]	(82)	[2]	(854)	[3]	(2,135)	[2]	(4)	[2]	0	[2]	(2)	[2]	(1)	[2]	(10)	[3]	(6)	[2]	0	[1]	0	[3]				[1]		[2]		[3]	(38)	[2]			(359)	[1]	(65)	[2]	(750)	[3]	(551)	[2]	(63)	[1]	(16)	[2]	(94)	[3]	(1,534)	[2]	(119)	[1],[10],[9]	(65)	[10],[2],[9]	(665)	[11],[12],[3]	(229)	[13],[14],[2]	(240)	[1],[10]	(346)	[10],[2]	(814)	[11],[3]	(1,149)	[14],[2]	(1,283)	[1],[9]	(104)	[2],[9]	(1,492)	[12],[3]	(330)	[13],[2]	(30)	[1],[15]	(39)	[16],[2]	(936)	[17],[3]	(275)	[18],[2]
Gross Transfers into Level 3																																											208	[1]	166	[2]	693	[3]	1,098	[2]	187	[1]	158	[2]	629	[3]	315	[2],[4]	8	[1]	5	[2]	45	[3]	38	[2]		[1]		[2]	1	[3]		[2]	13	[1]	3	[2],[5]	18	[3]	745	[2],[4]	116	[1],[6]	(350)	[2],[5]	(46)	[3],[7]	(283)	[2],[8]	100	[1]	0	[2]	100	[3]		[2]		[2]	0	[2]	0	[2]		[2]		[3]		[2]	100	[1]	100	[3]				[1]		[2]		[3]		[2]				[1]		[2]		[3]	0	[2]		[1]		[2]		[3]		[2]	12	[1],[10],[9]	450	[10],[2],[9]	12	[11],[12],[3]	450	[13],[14],[2]		[1],[10]		[10],[2]		[11],[3]		[14],[2]	0	[1],[9]	13	[2],[9]	34	[12],[3]	57	[13],[2]	239	[1],[15]		[16],[2]	239	[17],[3]		[18],[2]
Gross Transfers out of Level 3																																											(279)	[1]	(390)	[2]	(1,265)	[3]	(1,120)	[2]	(230)	[1]	(314)	[2]	(1,111)	[3]	(865)	[2],[4]	(42)	[1]	(66)	[2]	(123)	[3]	(68)	[2]	(3)	[1]	(7)	[2]	(4)	[3]	(19)	[2]	(4)	[1]	(3)	[2],[5]	(27)	[3]	(168)	[2],[4]	101	[1],[6]	16	[2],[5]	603	[3],[7]	(370)	[2],[8]	0	[1]	0	[2]	(261)	[3]	(771)	[2]	(33)	[2]		[2]	(502)	[2]		[2]		[3]		[2]		[1]		[3]				[1]		[2]	(88)	[3]	(27)	[2]			0	[1]		[2]	(5)	[3]	(209)	[2]		[1]		[2]	(168)	[3]		[2]	(5)	[1],[10],[9]	(3)	[10],[2],[9]	(21)	[11],[12],[3]	(5)	[13],[14],[2]		[1],[10]		[10],[2]		[11],[3]		[14],[2]	0	[1],[9]	0	[2],[9]	(3)	[12],[3]	(632)	[13],[2]		[1],[15]		[16],[2]	(55)	[17],[3]	(11)	[18],[2]
Balance, ending																																											9,026	[3]	9,955	[2]	9,026	[3]	9,955	[2]	3,780	[3]	4,173	[2],[4]	3,780	[3]	4,173	[2],[4]	338	[3]	573	[2]	338	[3]	573	[2]	388	[3]	303	[2]	388	[3]	303	[2]	4,520	[3]	4,906	[2],[4],[5]	4,520	[3]	4,906	[2],[4],[5]	768	[3],[7]	2,960	[2],[5],[8]	768	[3],[7]	2,960	[2],[5],[8]	4,943	[3]	6,299	[2]	4,943	[3]	6,299	[2]		[2]	1	[2]	1	[2]	23	[2]	0		23	[2]	105	[1]	105	[1]	0	[1]	8	[3]	93	[2]	8	[3]	93	[2]	8	[1]	4,013	[3]	5,121	[2]	4,013	[3]	5,121	[2]	817	[3]	1,061	[2]	817	[3]	1,061	[2]	3,016	[11],[12],[3]	2,253	[10],[13],[14],[2],[9]	3,016	[11],[12],[3]	2,253	[10],[13],[14],[2],[9]	5,058	[11],[3]	5,087	[10],[14],[2]	5,058	[11],[3]	5,087	[10],[14],[2]	913	[12],[3]	3,313	[13],[2],[9]	913	[12],[3]	3,313	[13],[2],[9]	1,878	[17],[3]	2,978	[16],[18],[2]	1,878	[17],[3]	2,978	[16],[18],[2]
Balance, beginning															(55)	[1]	(143)	[2]	(64)	[3]	(114)	[2]	0	[2],[9]	0	[13],[2]	(230)	[1],[9]	(2)	[2],[9]	(15)	[12],[3]	(14)	[13],[2]	(1,890)	[1],[9]	(2,388)	[2],[9]	(2,301)	[12],[3]	(2,943)	[13],[2]
Gains (Losses) in Earnings															1	[1]	4	[2]	7	[3]	4	[2]	0	[2],[9]	0	[13],[2]	8	[1],[9]	0	[2],[9]	30	[12],[3]	4	[13],[2]	(62)	[1],[9]	(91)	[2],[9]	41	[12],[3]	(239)	[13],[2]
Gains (Losses) in OCI																								[2],[9]		[13],[2]		[1],[9]		[2],[9]		[12],[3]		[13],[2]		[1],[9]		[2],[9]		[12],[3]		[13],[2]
Gross Purchases															6	[1]	17	[2]	24	[3]	72	[2]		[2],[9]		[13],[2]		[1],[9]		[2],[9]	0	[12],[3]	5	[13],[2]	47	[1],[9]	70	[2],[9]	306	[12],[3]	188	[13],[2]
Gross Sales															(9)	[1]	(45)	[2]	(40)	[3]	(114)	[2]		[2],[9]		[13],[2]		[1],[9]		[2],[9]		[12],[3]		[13],[2]	0	[1],[9]		[2],[9]	(4)	[12],[3]	(33)	[13],[2]
Gross Issuances																			(5)	[3]			(232)	[2],[9]	(232)	[13],[2]		[1],[9]	(7)	[2],[9]	(751)	[12],[3]	(7)	[13],[2]	(47)	[1],[9]	(115)	[2],[9]	(149)	[12],[3]	(253)	[13],[2]
Gross Settlements																								[2],[9]		[13],[2]	189	[1],[9]		[2],[9]	703	[12],[3]		[13],[2]	46	[1],[9]	391	[2],[9]	172	[12],[3]	1,099	[13],[2]
Gross Transfers into Level 3																			(9)	[3]	(65)	[2]		[2],[9]		[13],[2]		[1],[9]		[2],[9]	(1)	[12],[3]		[13],[2]	(485)	[1],[9]	(531)	[2],[9]	(1,017)	[12],[3]	(1,569)	[13],[2]
Gross Transfers out of Level 3															(8)	[1]	(2)	[2]	(38)	[3]	(52)	[2]	0	[2],[9]		[13],[2]	(2)	[1],[9]	0	[2],[9]	(3)	[12],[3]	(3)	[13],[2]	(328)	[1],[9]	(374)	[2],[9]	(889)	[12],[3]	(1,460)	[13],[2]
Balance, ending															(49)	[3]	(165)	[2]	(49)	[3]	(165)	[2]	(232)	[13],[2],[9]	(232)	[13],[2],[9]	(31)	[12],[3]	(9)	[13],[2],[9]	(31)	[12],[3]	(9)	[13],[2],[9]	(2,063)	[12],[3]	(2,290)	[13],[2],[9]	(2,063)	[12],[3]	(2,290)	[13],[2],[9]
Derivative assets	53,161		53,161		53,497	53,161	[19]	53,497	[19]	7,527	[19]	8,073	[19]	10,000
Derivative liabilities	$ 44,568		$ 44,568		$ 46,016	$ 44,568	[19]	$ 46,016	[19]	$ 6,759	[19]	$ 6,605	[19]	$ 7,000
[1] Assets (liabilities). For assets, increase / (decrease) to Level 3 and for liabilities, (increase) / decrease to Level 3. [2] Assets (liabilities). For assets, increase / (decrease) to Level 3 and for liabilities, (increase) / decrease to Level 3. [3] (1) Assets (liabilities). For assets, increase / (decrease) to Level 3 and for liabilities, (increase) / decrease to Level 3. [4] (2) During the nine months ended September 30, 2012, approximately $900 million was reclassified from Trading account assets - Corporate securities, trading loans and other to Trading account assets - Mortgage trading loans and ABS. In the table above, this reclassification is presented as a sale of Trading account assets - Corporate securities, trading loans and other and a purchase of Trading account assets - Mortgage trading loans and ABS. [5] Net derivatives include derivative assets of $10.0 billion and derivative liabilities of $7.0 billion. [6] Net derivatives include derivative assets of $7.5 billion and derivative liabilities of $6.8 billion [7] (2) Net derivatives include derivative assets of $7.5 billion and derivative liabilities of $6.8 billion. [8] (3) Net derivatives include derivative assets of $10.0 billion and derivative liabilities of $7.0 billion. [9] Amounts represent instruments that are accounted for under the fair value option. [10] Issuances represent loan originations and mortgage servicing rights retained following securitizations or whole loan sales. [11] (4) Issuances represent loan originations and mortgage servicing rights retained following securitizations or whole loan sales. [12] (3) Amounts represent instruments that are accounted for under the fair value option. [13] (4) Amounts represent instruments that are accounted for under the fair value option. [14] (5) Issuances represent loan originations and mortgage servicing rights retained following securitizations or whole loan sales. [15] Other assets is primarily comprised of private equity investments. [16] Other assets is primarily comprised of net monoline exposure to a single counterparty and private equity investments. [17] (5) Other assets is primarily comprised of private equity investments. [18] (6) Other assets is primarily comprised of net monoline exposure to a single counterparty and private equity investments. [19] For further disaggregation of derivative assets and liabilities, see Note 3 – Derivatives.