FAIR VALUE MEASUREMENT (Details 2) (Recurring, 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			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		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, 2012 Federal funds sold and securities borrowed or purchased under agreements to resell	Sep. 30, 2011 Federal funds sold and securities borrowed or purchased under agreements to resell	Sep. 30, 2012 Federal funds sold and securities borrowed or purchased under agreements to resell	Sep. 30, 2011 Federal funds sold and securities borrowed or purchased under agreements to resell	Sep. 30, 2012 Trading account assets	Sep. 30, 2011 Trading account assets	Sep. 30, 2012 Trading account assets	Sep. 30, 2011 Trading account assets	Sep. 30, 2012 Trading account assets Mortgage-backed securities	Sep. 30, 2011 Trading account assets Mortgage-backed securities	Sep. 30, 2012 Trading account assets Mortgage-backed securities	Sep. 30, 2011 Trading account assets Mortgage-backed securities	Sep. 30, 2012 Trading account assets U.S. government-sponsored agency guaranteed	Sep. 30, 2011 Trading account assets U.S. government-sponsored agency guaranteed	Sep. 30, 2012 Trading account assets U.S. government-sponsored agency guaranteed	Sep. 30, 2011 Trading account assets U.S. government-sponsored agency guaranteed	Sep. 30, 2012 Trading account assets Prime	Sep. 30, 2011 Trading account assets Prime	Sep. 30, 2012 Trading account assets Prime	Sep. 30, 2011 Trading account assets Prime	Sep. 30, 2012 Trading account assets Alt-A	Sep. 30, 2011 Trading account assets Alt-A	Sep. 30, 2012 Trading account assets Alt-A	Sep. 30, 2011 Trading account assets Alt-A	Sep. 30, 2012 Trading account assets Subprime	Sep. 30, 2011 Trading account assets Subprime	Sep. 30, 2012 Trading account assets Subprime	Sep. 30, 2011 Trading account assets Subprime	Sep. 30, 2012 Trading account assets Non-U.S. residential	Sep. 30, 2011 Trading account assets Non-U.S. residential	Sep. 30, 2012 Trading account assets Non-U.S. residential	Sep. 30, 2011 Trading account assets Non-U.S. residential	Sep. 30, 2012 Trading account assets Commercial	Sep. 30, 2011 Trading account assets Commercial	Sep. 30, 2012 Trading account assets Commercial	Sep. 30, 2011 Trading account assets Commercial	Sep. 30, 2012 Trading account assets U.S. Treasury and federal agency securities	Sep. 30, 2011 Trading account assets U.S. Treasury and federal agency securities	Sep. 30, 2012 Trading account assets U.S. Treasury and federal agency securities	Sep. 30, 2011 Trading account assets U.S. Treasury and federal agency securities	Sep. 30, 2012 Trading account assets Agency obligations	Sep. 30, 2011 Trading account assets Agency obligations	Sep. 30, 2012 Trading account assets Agency obligations	Sep. 30, 2011 Trading account assets Agency obligations	Sep. 30, 2012 Trading account assets State and municipal securities	Sep. 30, 2011 Trading account assets State and municipal securities	Sep. 30, 2012 Trading account assets State and municipal securities	Sep. 30, 2011 Trading account assets State and municipal securities	Sep. 30, 2012 Trading account assets Foreign government	Sep. 30, 2011 Trading account assets Foreign government	Sep. 30, 2012 Trading account assets Foreign government	Sep. 30, 2011 Trading account assets Foreign government	Sep. 30, 2012 Trading account assets Corporate	Sep. 30, 2011 Trading account assets Corporate	Sep. 30, 2012 Trading account assets Corporate	Sep. 30, 2011 Trading account assets Corporate	Sep. 30, 2012 Trading account assets Equity securities	Sep. 30, 2011 Trading account assets Equity securities	Sep. 30, 2012 Trading account assets Equity securities	Sep. 30, 2011 Trading account assets Equity securities	Sep. 30, 2012 Trading account assets Asset-backed securities	Sep. 30, 2011 Trading account assets Asset-backed securities	Sep. 30, 2012 Trading account assets Asset-backed securities	Sep. 30, 2011 Trading account assets Asset-backed securities	Sep. 30, 2012 Trading account assets Other debt securities	Sep. 30, 2011 Trading account assets Other debt securities	Sep. 30, 2012 Trading account assets Other debt securities	Sep. 30, 2011 Trading account assets Other debt securities	Sep. 30, 2012 Derivatives	Sep. 30, 2011 Derivatives	Sep. 30, 2012 Derivatives	Sep. 30, 2011 Derivatives	Sep. 30, 2012 Investments:	Sep. 30, 2011 Investments:	Sep. 30, 2012 Investments:	Sep. 30, 2011 Investments:	Sep. 30, 2012 Investments: Mortgage-backed securities	Sep. 30, 2011 Investments: Mortgage-backed securities	Sep. 30, 2012 Investments: Mortgage-backed securities	Sep. 30, 2011 Investments: Mortgage-backed securities	Sep. 30, 2012 Investments: U.S. government-sponsored agency guaranteed	Sep. 30, 2011 Investments: U.S. government-sponsored agency guaranteed	Sep. 30, 2012 Investments: U.S. government-sponsored agency guaranteed	Sep. 30, 2011 Investments: U.S. government-sponsored agency guaranteed	Sep. 30, 2011 Investments: Prime	Sep. 30, 2012 Investments: Prime	Sep. 30, 2011 Investments: Prime	Jun. 30, 2012 Investments: Prime	Sep. 30, 2012 Investments: Alt-A	Sep. 30, 2011 Investments: Alt-A	Sep. 30, 2012 Investments: Alt-A	Sep. 30, 2011 Investments: Alt-A	Sep. 30, 2012 Investments: Subprime	Sep. 30, 2012 Investments: Subprime	Sep. 30, 2012 Investments: Non-U.S. residential	Sep. 30, 2012 Investments: Non-U.S. residential	Sep. 30, 2012 Investments: Commercial	Sep. 30, 2011 Investments: Commercial	Sep. 30, 2012 Investments: Commercial	Sep. 30, 2011 Investments: Commercial	Sep. 30, 2012 Investments: U.S. Treasury and federal agency securities	Sep. 30, 2012 Investments: U.S. Treasury and federal agency securities	Sep. 30, 2011 Investments: U.S. Treasury and federal agency securities	Sep. 30, 2012 Investments: State and municipal securities	Sep. 30, 2011 Investments: State and municipal securities	Sep. 30, 2012 Investments: State and municipal securities	Sep. 30, 2011 Investments: State and municipal securities	Sep. 30, 2012 Investments: Foreign government	Sep. 30, 2011 Investments: Foreign government	Sep. 30, 2012 Investments: Foreign government	Sep. 30, 2011 Investments: Foreign government	Sep. 30, 2012 Investments: Corporate	Sep. 30, 2011 Investments: Corporate	Sep. 30, 2012 Investments: Corporate	Sep. 30, 2011 Investments: Corporate	Sep. 30, 2012 Investments: Equity securities	Sep. 30, 2011 Investments: Equity securities	Sep. 30, 2012 Investments: Equity securities	Sep. 30, 2011 Investments: Equity securities	Sep. 30, 2012 Investments: Asset-backed securities	Sep. 30, 2011 Investments: Asset-backed securities	Sep. 30, 2012 Investments: Asset-backed securities	Sep. 30, 2011 Investments: Asset-backed securities	Sep. 30, 2012 Investments: Other debt securities	Sep. 30, 2011 Investments: Other debt securities	Sep. 30, 2012 Investments: Other debt securities	Sep. 30, 2011 Investments: Other debt securities	Sep. 30, 2012 Investments: Non-marketable equity securities	Sep. 30, 2011 Investments: Non-marketable equity securities	Sep. 30, 2012 Investments: Non-marketable equity securities	Sep. 30, 2011 Investments: Non-marketable equity securities	Sep. 30, 2012 Loans	Sep. 30, 2011 Loans	Sep. 30, 2012 Loans	Sep. 30, 2011 Loans	Sep. 30, 2012 Mortgage servicing rights	Sep. 30, 2011 Mortgage servicing rights	Sep. 30, 2012 Mortgage servicing rights	Sep. 30, 2011 Mortgage servicing rights	Sep. 30, 2012 Other financial assets measured on a recurring basis	Sep. 30, 2011 Other financial assets measured on a recurring basis	Sep. 30, 2012 Other financial assets measured on a recurring basis	Sep. 30, 2011 Other financial assets measured on a recurring basis	Sep. 30, 2012 Interest-bearing deposits	Sep. 30, 2011 Interest-bearing deposits	Sep. 30, 2012 Interest-bearing deposits	Sep. 30, 2011 Interest-bearing deposits	Sep. 30, 2012 Federal funds purchased and securities loaned or sold under agreements to repurchase	Sep. 30, 2011 Federal funds purchased and securities loaned or sold under agreements to repurchase	Sep. 30, 2012 Federal funds purchased and securities loaned or sold under agreements to repurchase	Sep. 30, 2011 Federal funds purchased and securities loaned or sold under agreements to repurchase	Sep. 30, 2012 Trading account liabilities Securities sold, not yet purchased	Sep. 30, 2011 Trading account liabilities Securities sold, not yet purchased	Sep. 30, 2012 Trading account liabilities Securities sold, not yet purchased	Sep. 30, 2011 Trading account liabilities Securities sold, not yet purchased	Sep. 30, 2012 Short-term borrowings	Sep. 30, 2011 Short-term borrowings	Sep. 30, 2012 Short-term borrowings	Sep. 30, 2011 Short-term borrowings	Sep. 30, 2012 Long-term debt	Sep. 30, 2011 Long-term debt	Sep. 30, 2012 Long-term debt	Sep. 30, 2011 Long-term debt	Sep. 30, 2012 Other financial liabilities measured on a recurring basis	Sep. 30, 2011 Other financial liabilities measured on a recurring basis	Sep. 30, 2012 Other financial liabilities measured on a recurring basis	Sep. 30, 2011 Other financial liabilities measured on a recurring basis	Sep. 30, 2012 Interest rate contracts Derivatives	Sep. 30, 2011 Interest rate contracts Derivatives	Sep. 30, 2012 Interest rate contracts Derivatives	Sep. 30, 2011 Interest rate contracts Derivatives	Sep. 30, 2012 Foreign exchange contracts Derivatives	Sep. 30, 2011 Foreign exchange contracts Derivatives	Sep. 30, 2012 Foreign exchange contracts Derivatives	Sep. 30, 2011 Foreign exchange contracts Derivatives	Sep. 30, 2012 Equity contracts Derivatives	Sep. 30, 2011 Equity contracts Derivatives	Sep. 30, 2012 Equity contracts Derivatives	Sep. 30, 2011 Equity contracts Derivatives	Sep. 30, 2012 Commodity and other contracts Derivatives	Sep. 30, 2011 Commodity and other contracts Derivatives	Sep. 30, 2012 Commodity and other contracts Derivatives	Sep. 30, 2011 Commodity and other contracts Derivatives	Sep. 30, 2012 Credit derivatives Derivatives	Sep. 30, 2011 Credit derivatives Derivatives	Sep. 30, 2012 Credit derivatives Derivatives	Sep. 30, 2011 Credit derivatives Derivatives
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	$ 4,414	$ 3,431	$ 4,701	$ 4,911	$ 13,332	$ 18,877	$ 15,792	$ 19,656	$ 3,256	$ 3,423	$ 2,988	$ 3,577	$ 895	$ 947	$ 861	$ 831	$ 1,069	$ 651	$ 759	$ 594	$ 273	$ 229	$ 165	$ 385	$ 487	$ 723	$ 465	$ 1,125	$ 116	$ 323	$ 120	$ 224	$ 416	$ 550	$ 618	$ 418	$ 13	$ 46	$ 3	$ 72	$ 13	$ 46	$ 3	$ 72	$ 223	$ 246	$ 252	$ 208	$ 333	$ 903	$ 521	$ 566	$ 2,189	$ 4,680	$ 3,240	$ 5,004	$ 217	$ 648	$ 244	$ 776	$ 4,835	$ 6,609	$ 5,801	$ 7,620	$ 2,266	$ 2,322	$ 2,743	$ 1,833	$ (2,089)	$ (3,032)	$ (779)	$ (1,432)	$ 13,229	$ 16,690	$ 16,797	$ 17,286	$ 1,715	$ 83	$ 687	$ 716	$ 1,399	$ 59	$ 679	$ 22	$ 23	$ 8	$ 166	$ 2	$ 3	$ 1		$ 1	$ 6		$ 300		$ 5			$ 527		$ 75	$ 17	$ 480	$ 355	$ 667	$ 504	$ 329	$ 329	$ 447	$ 358	$ 421	$ 993	$ 989	$ 525	$ 1,180	$ 1,621	$ 1,453	$ 2,055	$ 2,771	$ 4,475	$ 4,041	$ 5,424	$ 55	$ 653	$ 120	$ 727	$ 6,278	$ 8,181	$ 8,318	$ 6,960	$ 4,737	$ 3,590	$ 4,682	$ 3,213	$ 2,117	$ 4,258	$ 2,569	$ 4,554	$ 2,375	$ 2,449	$ 2,245	$ 2,509																									$ 619	$ 201	$ 726	$ (730)	$ (517)	$ (539)	$ (562)	$ (336)	$ (1,587)	$ (1,845)	$ (1,737)	$ (1,639)	$ (902)	$ (1,059)	$ (934)	$ (1,023)	$ 298	$ 210	$ 1,728	$ 2,296
Net realized/unrealized gains (losses) included in principal transactions, assets	5	209	70	80	335	(803)	581	298	103	(158)	146	139	(12)	(140)	21	(59)	53	9	119	93	21		47	11	34	7	6	(5)	8	(19)	24	18	(1)	(15)	(71)	81		7		9		7		9	13	4	30	56	1	4	5	11		(120)	9	20	13	(172)	(58)	(101)	212	(240)	434	311	(7)	(128)	15	(147)	(925)	2,053	(1,995)	1,785																																																																																																(188)	7	(46)	(108)	50	(72)	130	8		212	199	409	(12)	225	(51)	378	(775)	1,681	(2,227)	1,098
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets																																																																									61	(218)	319	297	13	(27)	9	(21)	10	(17)	6	(15)	(2)		(1)			(1)		(1)	1	1	2	2		(7)		(4)				(4)	35	9	(12)	(3)	14	13	11	(6)	(107)	(11)	(101)	52	4	101	(53)	(170)	(2)	(160)	39	(53)	8	(53)	(3)	232	(143)	411	437	79	(164)	17	(317)	(169)	(1,327)	(462)	(1,426)	207	57	305	48
Transfers into Level 3, assets	258		283		980		3,253		541		1,630		135		673		83		442		42		49		111		166		7		46		163		254										4		4		14		26		43		391		30		49		24		189		324		964		48		(82)		1,040		1,165		472		472		472		472																		75	75						68		148		23		68						402		402										87		1,004						13		21																										172		295		(70)		(152)		(84)		(120)		(15)		(20)		45		(85)
Transfers out of Level 3, assets			(377)		(678)		(4,146)		(306)		(1,139)		(199)		(544)		(38)		(165)		(2)		(62)		(19)		(94)		(19)		(57)		(29)		(217)												(7)		(124)		(864)		(58)		(449)		(4)		(17)		(43)		(104)		(143)		(1,566)		(342)		(62)		(1,355)		(4,009)		(1,262)		(2,795)		(1,257)		(2,778)			(6)											(5)		(11)			(75)				(151)		(80)		(236)		(2)		(698)						(11)		(54)												(25)								(31)																										(275)		(394)		(17)		29		20		387				45		(70)		(129)
Transfers in and/or out of Level 3, assets		1,050		(301)		1,447		3,081		345		574		225		314		19		16		44		28		(196)		(133)		(80)		(48)		333		397		(48)		(45)		(48)		(45)		3		110		(30)		131		244		1,469		(81)		(250)		287		501		727		591		662		801		(85)		(1,478)		42		(582)				37	13		(109)											29		(510)			(15)		(4)		(59)		(60)		(36)		(11)		13		(5)		(34)		(23)		30				67		(24)		(862)		635		390						(56)		(100)																										393		1,102		62		(76)		(126)		(191)		67		(33)		266		(1)
Purchases, assets					3,533	3,051	13,285	16,876	219	522	2,106	4,850	97	224	352	579	36	120	570	1,435	15	30	278	1,607	29	50	448	501	4	37	105	328	38	61	353	400			13	5			13	5	20	79	48	1,048	39	455	881	1,314	392	507	2,148	2,985	52	33	256	161	2,030	660	5,690	4,398	781	795	2,143	2,115	153	139	947	201	3,013	1,018	6,345	5,149	1,866	7	4,431	58	580	4	2,825	9			7		37		40			6	1,249	1,549		3	11	42	12	12		118	5	276	38	127	127	328	233	7	56	136	527					755	19	767	106	52		52	35	76	804	343	4,152	142		249	248			2		1		3	57																									23	4	239	8	2	11	190	11	101	124	304	180	25		98	2	2		116
Issuance, assets					17	35	62	35	17	35	62	35	17	35	62	35																																																																																																																				415	847	930	1,876	101	125	322	230	635	142	1,264	380
Sales, assets					(3,723)	(3,856)	(12,696)	(17,517)	(715)	(624)	(2,597)	(5,519)	(217)	(177)	(631)	(529)	(259)	(135)	(780)	(1,468)	(39)	(57)	(167)	(1,773)	(74)	(95)	(421)	(961)	(63)	(87)	(185)	(348)	(63)	(73)	(413)	(440)	(13)	(5)	(16)	(41)	(13)	(5)	(16)	(41)	(12)	(101)	(79)	(1,191)	(65)	(337)	(371)	(640)	(215)	(888)	(1,614)	(3,258)	(21)	(162)	(163)	(320)	(1,933)	(1,040)	(6,226)	(5,173)	(749)	(699)	(1,630)	(1,375)	(190)	(71)	(949)	(302)	(1,921)	(988)	(4,112)	(2,791)	(11)	(39)	(11)	(105)				(7)	(17)		(46)		(4)		(4)		(7)	(7)				(22)		(52)			(2)	(3)	(3)	(210)	(83)	(26)	(4)	(216)	(67)	(66)	(37)	(102)	(54)	(54)	(4)	(228)	(13)	(27)		(77)	(447)		(285)	(64)	(287)	(1,734)	(616)	(3,204)	(1,733)	(144)	(18)	(239)	(18)			(5)		(4)	(114)	(46)	(172)																									(19)	(4)	(158)	(15)	(6)	(2)	(203)	(2)	(163)	(57)	(498)	(217)	(2)	(8)	(80)	(68)			(10)
Settlements, assets					(141)	(406)	(2,476)	(4,084)	(36)	(82)	(117)	(195)	(32)	(47)	(110)	(104)	(1)	(4)	(2)	(10)	(1)	(7)	(1)	(19)	(2)		(4)	(38)						(24)		(24)																(387)		(318)	(1,374)	(2,115)	(44)		(68)		(3)	(2)	(662)	(1,383)	(58)	(4)	(255)	(4)	(371)	(392)	(796)	(1,694)	(630)	(1,035)	(3,068)	(3,081)		(1)		(1)					(1)		(1)																					(34)	(53)	(103)	(146)	(40)	(88)	(45)	(104)	(120)	(110)	(268)	(449)	(368)	(223)	(1,567)	(906)		(103)	(1)	(266)	(68)	(457)	(1,084)	(1,209)	(252)	(244)	(1,554)	(746)	(129)	(204)	(506)	(506)	(562)	(98)	(1,096)	(342)																									(454)	(66)	(784)	278	(32)	35	(22)	(110)	84	(225)	(164)	(459)	(8)	46	28	15	39	(182)	146	(1,418)
Balance at end of period, asset	4,677	4,690	4,677	4,690	13,655	18,345	13,655	18,345	3,079	3,461	3,079	3,461	684	1,067	684	1,067	943	660	943	660	309	239	309	239	566	489	566	489	53	174	53	174	524	832	524	832									248	231	248	231	198	995	198	995	2,351	4,105	2,351	4,105	243	266	243	266	5,122	6,274	5,122	6,274	2,414	3,013	2,414	3,013	(3,716)	(641)	(3,716)	(641)	13,437	15,382	13,437	15,382	2,793	65	2,793	65	1,204	46	1,204	46	16	2	16	2	36		36				1,551	1,551		3		3	87	87		591	388	591	388	381	353	381	353	337	806	337	806	1,058	1,506	1,058	1,506	3,352	4,246	3,352	4,246	54	273	54	273	4,784	7,745	4,784	7,745	5,064	4,646	5,064	4,646	1,920	2,852	1,920	2,852	2,665	2,380	2,665	2,380																									(122)	535	(122)	535	(590)	(505)	(590)	(505)	(1,629)	(1,917)	(1,629)	(1,917)	(914)	(729)	(914)	(729)	(461)	1,975	(461)	1,975
Unrealized gains (losses) still held, assets		157		79	164	(610)	62	(699)	(2)	(196)	(2)	4	(21)	(167)	27	(113)	2	2	6	43	7	1	4	1	7	44	2	98	2	(15)	1	(26)	1	(61)	12	1									5	9	3	2	3	(28)	2	(23)	1	(86)	(40)	(237)	(7)	(77)	(27)	(85)	162	(235)	126	(361)	2	3		1	(83)	1,480	(1,745)	1,075	(50)	(220)	216	326	55	(17)	55	(31)	55	(17)	55	(31)																				6	35	(3)	(22)	1	11	3	2	(4)	(83)	5	289	28	(14)	16	(4)	170		1	5		(24)		(24)	34	(128)	139	111	15	(126)	65	(282)	(169)	(1,327)	(464)	(1,426)	207	63	235	91																									194	115	(169)	258	(85)	(66)	(14)	(226)	(328)	(572)	(581)	(811)	216	253	(55)	(247)	(80)	1,750	(926)	2,101
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability																																																																																																																																																698	586	431	277	1,045	1,078	1,061	1,261	148	447	412	187	367	611	499	802	5,952	7,287	6,904	8,494	2	16	3	19
Net realized/unrealized gains (losses) included in principal transactions, liabilities																																																																																																																																																				(24)	(39)	(89)	(28)	16	(83)	(44)	10	(20)	48	(76)	192	(135)	59	6	(18)
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities																																																																																																																																																(85)	40	(105)	13													8	106	89	272	(3)	(1)	(5)	(18)
Transfers into Level 3, liabilities																																																																																																																																																		213						13		18		43		46		363		712
Transfers out of Level 3, liabilities																																																																																																																																																(36)		(36)		(14)		(14)		(12)		(43)				(11)		(216)		(1,122)
Transfers in and/or out of Level 3, liabilities																																																																																																																																																	(124)		(73)		(19)		81		97		296		(377)		(255)		(276)		(648)		2		9
Purchases, liability																																																																																																																																																																						(2)	1
Issuance, liability																																																																																																																																																71	37	251	281									66	354	261	522	648	228	1,823	1,161	1	1	2	13
Sales, liability																																																																																																																																																				(215)		(211)	(165)	24	238	164	385									(1)		(1)	(1)
Settlements, liability																																																																																																																																																(57)		(203)	(13)	1		(84)	(107)	(32)	(141)	(470)	(134)	(397)	(66)	(772)	(403)	(408)	(355)	(1,756)	(2,034)	(2)	(13)	(4)	(52)
Balance at end of period, liability																																																																																																																																																761	459	761	459	841	1,098	841	1,098	125	724	125	724	99	474	99	474	6,466	6,719	6,466	6,719	3	7	3	7
Unrealized gains (losses) still held, liabilities																																																																																																																																																	$ (45)	$ (142)	$ (101)	$ 4		$ 36		$ 9	$ (14)	$ (40)	$ (24)	$ (10)	$ (1)	$ (26)	$ (6)	$ (245)	$ (50)	$ (534)	$ 69	$ (3)	$ (3)	$ (2)	$ (9)