FAIR VALUE MEASUREMENT - Level 3 Fair Value Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Trading derivatives, net
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	$ (703)	$ (930)	$ (112)	$ (1,207)
Net realized/unrealized gains (losses) included in principal transactions	2,606	421	4,326	664
Other	0	0	0	0
Transfers into Level 3	(56)	(616)	(585)	(392)
Transfers out of Level 3	(170)	531	(1,162)	535
Purchases	367	226	709	339
Issuances	26	0	26	(84)
Sales	(742)	(421)	(1,076)	(569)
Settlements	(486)	(80)	(1,284)	(155)
Balance at end of period, asset (liability), net	842	(869)	842	(869)
Unrealized gains (losses) still held	2,001	(50)	2,834	41
Trading derivatives, net | Interest rate contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	779	1,229	1,726	1,614
Net realized/unrealized gains (losses) included in principal transactions	434	(126)	600	(298)
Other	0	0	0	0
Transfers into Level 3	141	218	73	173
Transfers out of Level 3	(272)	321	(803)	321
Purchases	7	2	9	2
Issuances	6	0	6	(84)
Sales	(6)	0	(6)	0
Settlements	(208)	120	(724)	36
Balance at end of period, asset (liability), net	881	1,764	881	1,764
Unrealized gains (losses) still held	473	(70)	650	(197)
Trading derivatives, net | Foreign exchange contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	(131)	(86)	(89)	52
Net realized/unrealized gains (losses) included in principal transactions	769	59	1,164	(79)
Other	0	0	0	0
Transfers into Level 3	34	0	(475)	8
Transfers out of Level 3	(50)	4	(6)	4
Purchases	73	111	175	134
Issuances	20	0	20	0
Sales	(547)	(282)	(611)	(297)
Settlements	(12)	10	(22)	(6)
Balance at end of period, asset (liability), net	156	(184)	156	(184)
Unrealized gains (losses) still held	126	(28)	235	(57)
Trading derivatives, net | Equity contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	(1,564)	(2,876)	(2,140)	(3,213)
Net realized/unrealized gains (losses) included in principal transactions	1,189	309	1,997	612
Other	0	0	0	0
Transfers into Level 3	(60)	(634)	(73)	(598)
Transfers out of Level 3	232	892	207	898
Purchases	220	85	405	109
Issuances	0	0	0	0
Sales	(91)	(94)	(316)	(117)
Settlements	(27)	(232)	(181)	(241)
Balance at end of period, asset (liability), net	(101)	(2,550)	(101)	(2,550)
Unrealized gains (losses) still held	1,182	349	1,634	213
Trading derivatives, net | Commodity contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	217	732	422	292
Net realized/unrealized gains (losses) included in principal transactions	208	236	622	550
Other	0	0	0	0
Transfers into Level 3	(74)	(148)	(45)	10
Transfers out of Level 3	84	(612)	(409)	(617)
Purchases	67	28	120	94
Issuances	0	0	0	0
Sales	(98)	(45)	(142)	(155)
Settlements	(149)	(49)	(313)	(32)
Balance at end of period, asset (liability), net	255	142	255	142
Unrealized gains (losses) still held	246	(194)	410	280
Trading derivatives, net | Credit derivatives
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	(4)	71	(31)	48
Net realized/unrealized gains (losses) included in principal transactions	6	(57)	(57)	(121)
Other	0	0	0	0
Transfers into Level 3	(97)	(52)	(65)	15
Transfers out of Level 3	(164)	(74)	(151)	(71)
Purchases	0	0	0	0
Issuances	0	0	0	0
Sales	0	0	(1)	0
Settlements	(90)	71	(44)	88
Balance at end of period, asset (liability), net	(349)	(41)	(349)	(41)
Unrealized gains (losses) still held	(26)	(107)	(95)	(198)
Interest-bearing deposits
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	191	199	183	206
Net realized/unrealized gains (losses) included in principal transactions, liabilities	0	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	7	2	3	18
Transfers into Level 3, liabilities	0	0	7	0
Transfers out of Level 3, liabilities	(122)	(44)	(122)	(44)
Purchases, liability	0	0	0	0
Issuance, liability	17	11	18	20
Sales, liability	0	0	0	0
Settlements, liability	(61)	(10)	(65)	(10)
Balance at end of period, liability	18	154	18	154
Unrealized gains (losses) still held, liabilities	0	0	0	(45)
Securities loaned and sold under agreements to repurchase
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	612	977	643	631
Net realized/unrealized gains (losses) included in principal transactions, liabilities	24	22	50	7
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0	0	0
Transfers into Level 3, liabilities	0	0	0	0
Transfers out of Level 3, liabilities	(3)	(483)	(3)	(483)
Purchases, liability	16	80	16	488
Issuance, liability	0	0	0	0
Sales, liability	0	0	0	0
Settlements, liability	(8)	(64)	(13)	(141)
Balance at end of period, liability	593	488	593	488
Unrealized gains (losses) still held, liabilities	10	0	28	19
Trading account liabilities | Securities sold, not yet purchased
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	38	167	65	214
Net realized/unrealized gains (losses) included in principal transactions, liabilities	(8)	7	21	61
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0	0	0
Transfers into Level 3, liabilities	10	54	35	62
Transfers out of Level 3, liabilities	(4)	(21)	(19)	(25)
Purchases, liability	30	10	83	20
Issuance, liability	0	0	0	0
Sales, liability	1	0	1	0
Settlements, liability	(11)	(35)	(72)	(42)
Balance at end of period, liability	72	168	72	168
Unrealized gains (losses) still held, liabilities	(12)	26	(2)	(2)
Trading account liabilities | Other trading liabilities
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability		6		26
Net realized/unrealized gains (losses) included in principal transactions, liabilities		5		25
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities		0		0
Transfers into Level 3, liabilities		0		0
Transfers out of Level 3, liabilities		0		0
Purchases, liability		0		0
Issuance, liability		0		0
Sales, liability		0		0
Settlements, liability		0		0
Balance at end of period, liability		1		1
Unrealized gains (losses) still held, liabilities		4		0
Short-term borrowings
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	36	49	105	219
Net realized/unrealized gains (losses) included in principal transactions, liabilities	1	33	89	32
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0	0	0
Transfers into Level 3, liabilities	12	40	40	42
Transfers out of Level 3, liabilities	(12)	(32)	(21)	(44)
Purchases, liability	0	0	0	0
Issuance, liability	69	17	76	25
Sales, liability	0	0	0	0
Settlements, liability	(23)	0	(30)	(169)
Balance at end of period, liability	81	41	81	41
Unrealized gains (losses) still held, liabilities	2	17	1	17
Long-term debt
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Transfers out of Level 3	2,600	6,000	3,500	6,000
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	27,432	26,337	25,509	25,210
Net realized/unrealized gains (losses) included in principal transactions, liabilities	4,719	(849)	8,245	1,773
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0	0	0
Transfers into Level 3, liabilities	3,335	3,937	6,743	4,869
Transfers out of Level 3, liabilities	(2,634)	(5,966)	(3,507)	(5,968)
Purchases, liability	0	0	0	0
Issuance, liability	6,527	1,825	9,699	7,545
Sales, liability	0	0	0	0
Settlements, liability	(163)	(1,914)	(421)	(4,815)
Balance at end of period, liability	29,778	25,068	29,778	25,068
Unrealized gains (losses) still held, liabilities	4,232	(699)	(4,197)	791
Other financial liabilities
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability		8	1	1
Net realized/unrealized gains (losses) included in principal transactions, liabilities		0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities		0	1	(3)
Transfers into Level 3, liabilities		0	0	0
Transfers out of Level 3, liabilities		(4)	0	(4)
Purchases, liability		0	0	0
Issuance, liability		0	0	14
Sales, liability			0	0
Settlements, liability		0	0	(10)
Balance at end of period, liability	0	4	0	4
Unrealized gains (losses) still held, liabilities		0	0	0
Securities borrowed and purchased under agreements to resell
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	202	262	231	320
Net realized/unrealized gains (losses) included in principal transactions	(12)	(2)	(1)	(11)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3, assets	0	(49)	0	(49)
Purchases, assets	36	43	124	276
Issuance, assets	0	0	0	0
Sales, assets	0	0	0	0
Settlements, assets	(43)	(43)	(171)	(325)
Balance at end of period, asset	183	211	183	211
Unrealized gains (losses) still held, assets	(10)	1	(7)	1
Trading non-derivative assets
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	2,940	2,698	2,520	3,647
Net realized/unrealized gains (losses) included in principal transactions	64	279	118	437
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0	0
Transfers into Level 3	1,045	904	1,455	1,031
Transfers out of Level 3, assets	(545)	(496)	(870)	(711)
Purchases, assets	1,044	1,184	2,361	2,207
Issuance, assets	6	0	16	4
Sales, assets	(1,066)	(1,583)	(2,108)	(3,625)
Settlements, assets	(4)	0	(8)	(4)
Balance at end of period, asset	3,484	2,986	3,484	2,986
Unrealized gains (losses) still held, assets	2	(1)	(43)	59
Trading non-derivative assets | U.S. government-sponsored agency guaranteed
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	498	38	496
Net realized/unrealized gains (losses) included in principal transactions	(15)	2	(13)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	80	238	127
Transfers out of Level 3, assets	(89)	(7)	(158)
Purchases, assets	318	113	484
Issuance, assets	0	0	0
Sales, assets	(84)	(8)	(228)
Settlements, assets	0	0	0
Balance at end of period, asset	708	376	708	376
Unrealized gains (losses) still held, assets	(19)	(12)	(21)
Trading non-derivative assets | Residential
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	118	268	104
Net realized/unrealized gains (losses) included in principal transactions	0	(1)	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	28	41	61
Transfers out of Level 3, assets	(11)	(65)	(32)
Purchases, assets	47	57	85
Issuance, assets	0	0	0
Sales, assets	(29)	(205)	(65)
Settlements, assets	0	0	0
Balance at end of period, asset	153	95	153	95
Unrealized gains (losses) still held, assets	(4)	2	(5)
Trading non-derivative assets | Commercial
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	52	59	81
Net realized/unrealized gains (losses) included in principal transactions	(3)	16	(5)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	96	60	97
Transfers out of Level 3, assets	(8)	(8)	(34)
Purchases, assets	4	11	9
Issuance, assets	0	0	0
Sales, assets	(3)	(51)	(10)
Settlements, assets	0	0	0
Balance at end of period, asset	138	87	138	87
Unrealized gains (losses) still held, assets	(3)	3	(2)
Trading non-derivative assets | Mortgage-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	668	365	681
Net realized/unrealized gains (losses) included in principal transactions	(18)	17	(18)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	204	339	285
Transfers out of Level 3, assets	(108)	(80)	(224)
Purchases, assets	369	181	578
Issuance, assets	0	0	0
Sales, assets	(116)	(264)	(303)
Settlements, assets	0	0	0
Balance at end of period, asset	999	558	999	558
Unrealized gains (losses) still held, assets	(26)	(7)	(28)
Trading non-derivative assets | U.S. Treasury and federal agency securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	2	0	4
Net realized/unrealized gains (losses) included in principal transactions	0	0	(4)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	0	0	2
Transfers out of Level 3, assets	(1)	0	(1)
Purchases, assets	0	0	0
Issuance, assets	0	0	0
Sales, assets	0	0	0
Settlements, assets	0	0	0
Balance at end of period, asset	1	0	1	0
Unrealized gains (losses) still held, assets	0	0	0
Trading non-derivative assets | State and municipal
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	6	94	37
Net realized/unrealized gains (losses) included in principal transactions	4	0	5
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	71	0	71
Transfers out of Level 3, assets	0	(29)	(20)
Purchases, assets	0	5	1
Issuance, assets	0	0	0
Sales, assets	(1)	0	(14)
Settlements, assets	0	0	0
Balance at end of period, asset	80	70	80	70
Unrealized gains (losses) still held, assets	(3)	0	(5)
Trading non-derivative assets | Foreign government
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	94	81	23
Net realized/unrealized gains (losses) included in principal transactions	(27)	4	(26)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	249	125	299
Transfers out of Level 3, assets	(1)	(28)	(1)
Purchases, assets	57	14	87
Issuance, assets	0	0	0
Sales, assets	(8)	(55)	(18)
Settlements, assets	0	0	0
Balance at end of period, asset	364	141	364	141
Unrealized gains (losses) still held, assets	(12)	1	(18)
Trading non-derivative assets | Corporate
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,013	290	412
Net realized/unrealized gains (losses) included in principal transactions	59	(15)	68
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	120	312	262
Transfers out of Level 3, assets	(244)	(50)	(278)
Purchases, assets	181	408	828
Issuance, assets	0	0	0
Sales, assets	(592)	(122)	(755)
Settlements, assets	0	0	0
Balance at end of period, asset	537	823	537	823
Unrealized gains (losses) still held, assets	38	(36)	18
Trading non-derivative assets | Marketable equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	199	89	174
Net realized/unrealized gains (losses) included in principal transactions	(9)	2	(14)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	14	80	63
Transfers out of Level 3, assets	(61)	(40)	(87)
Purchases, assets	58	23	108
Issuance, assets	0	0	0
Sales, assets	(68)	(7)	(111)
Settlements, assets	0	0	0
Balance at end of period, asset	133	147	133	147
Unrealized gains (losses) still held, assets	(23)	15	(40)
Trading non-derivative assets | Asset-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	466	1,208	613
Net realized/unrealized gains (losses) included in principal transactions	(24)	209	(19)
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	82	17	140
Transfers out of Level 3, assets	(100)	(148)	(167)
Purchases, assets	262	352	393
Issuance, assets	0	0	0
Sales, assets	(132)	(946)	(406)
Settlements, assets	0	0	0
Balance at end of period, asset	554	692	554	692
Unrealized gains (losses) still held, assets	(26)	22	(45)
Trading non-derivative assets | Other trading assets
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	492	571	576
Net realized/unrealized gains (losses) included in principal transactions	79	62	126
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0	0
Transfers into Level 3	305	31	333
Transfers out of Level 3, assets	(30)	(121)	(92)
Purchases, assets	117	201	366
Issuance, assets	6	0	16
Sales, assets	(149)	(189)	(501)
Settlements, assets	(4)	0	(8)
Balance at end of period, asset	816	555	816	555
Unrealized gains (losses) still held, assets	54	4	75
Trading non-derivative assets | U.S. government-sponsored agency guaranteed
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				27
Net realized/unrealized gains (losses) included in principal transactions				1
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				252
Transfers out of Level 3, assets				(8)
Purchases, assets				114
Issuance, assets				0
Sales, assets				(10)
Settlements, assets				0
Balance at end of period, asset		376		376
Unrealized gains (losses) still held, assets				16
Trading non-derivative assets | Residential
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				340
Net realized/unrealized gains (losses) included in principal transactions				22
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				69
Transfers out of Level 3, assets				(68)
Purchases, assets				201
Issuance, assets				0
Sales, assets				(469)
Settlements, assets				0
Balance at end of period, asset		95		95
Unrealized gains (losses) still held, assets				18
Trading non-derivative assets | Commercial
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				136
Net realized/unrealized gains (losses) included in principal transactions				21
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				76
Transfers out of Level 3, assets				(41)
Purchases, assets				24
Issuance, assets				0
Sales, assets				(129)
Settlements, assets				0
Balance at end of period, asset		87		87
Unrealized gains (losses) still held, assets				2
Trading non-derivative assets | Mortgage-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				503
Net realized/unrealized gains (losses) included in principal transactions				44
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				397
Transfers out of Level 3, assets				(117)
Purchases, assets				339
Issuance, assets				0
Sales, assets				(608)
Settlements, assets				0
Balance at end of period, asset		558		558
Unrealized gains (losses) still held, assets				36
Trading non-derivative assets | U.S. Treasury and federal agency securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				0
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				0
Transfers out of Level 3, assets				0
Purchases, assets				0
Issuance, assets				0
Sales, assets				0
Settlements, assets				0
Balance at end of period, asset		0		0
Unrealized gains (losses) still held, assets				0
Trading non-derivative assets | State and municipal
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				94
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				0
Transfers out of Level 3, assets				(29)
Purchases, assets				5
Issuance, assets				0
Sales, assets				0
Settlements, assets				0
Balance at end of period, asset		70		70
Unrealized gains (losses) still held, assets				1
Trading non-derivative assets | Foreign government
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				51
Net realized/unrealized gains (losses) included in principal transactions				5
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				136
Transfers out of Level 3, assets				(28)
Purchases, assets				71
Issuance, assets				0
Sales, assets				(94)
Settlements, assets				0
Balance at end of period, asset		141		141
Unrealized gains (losses) still held, assets				(6)
Trading non-derivative assets | Corporate
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				375
Net realized/unrealized gains (losses) included in principal transactions				75
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				318
Transfers out of Level 3, assets				(168)
Purchases, assets				475
Issuance, assets				0
Sales, assets				(252)
Settlements, assets				0
Balance at end of period, asset		823		823
Unrealized gains (losses) still held, assets				(7)
Trading non-derivative assets | Marketable equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				73
Net realized/unrealized gains (losses) included in principal transactions				47
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				84
Transfers out of Level 3, assets				(42)
Purchases, assets				35
Issuance, assets				0
Sales, assets				(50)
Settlements, assets				0
Balance at end of period, asset		147		147
Unrealized gains (losses) still held, assets				32
Trading non-derivative assets | Asset-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				1,606
Net realized/unrealized gains (losses) included in principal transactions				248
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				35
Transfers out of Level 3, assets				(198)
Purchases, assets				934
Issuance, assets				0
Sales, assets				(1,933)
Settlements, assets				0
Balance at end of period, asset		692		692
Unrealized gains (losses) still held, assets				8
Trading non-derivative assets | Other Trading Assets
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				945
Net realized/unrealized gains (losses) included in principal transactions				18
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				61
Transfers out of Level 3, assets				(129)
Purchases, assets				348
Issuance, assets				4
Sales, assets				(688)
Settlements, assets				(4)
Balance at end of period, asset		555		555
Unrealized gains (losses) still held, assets				(5)
Investments
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	2,378	1,759	2,227	1,542
Net realized/unrealized gains (losses) included in principal transactions	0	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(64)	15	(147)	1
Transfers into Level 3	100	581	415	589
Transfers out of Level 3, assets	(195)	(397)	(304)	(397)
Purchases, assets	223	350	410	681
Issuance, assets	0	0	0	0
Sales, assets	(179)	(62)	(338)	(170)
Settlements, assets	0	0	0	0
Balance at end of period, asset	2,263	2,246	2,263	2,246
Unrealized gains (losses) still held, assets	(45)	(10)	(85)	(83)
Investments | U.S. government-sponsored agency guaranteed
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	46	30	51
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(2)	2	(9)
Transfers into Level 3	0	22	1
Transfers out of Level 3, assets	(10)	0	(10)
Purchases, assets	0	3	4
Issuance, assets	0	0	0
Sales, assets	(6)	(5)	(9)
Settlements, assets	0	0	0
Balance at end of period, asset	28	52	28	52
Unrealized gains (losses) still held, assets	(2)	(21)	(4)
Investments | Residential
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	44		94
Net realized/unrealized gains (losses) included in principal transactions	0		0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(4)		(6)
Transfers into Level 3	0		0
Transfers out of Level 3, assets	0		(39)
Purchases, assets	0		0
Issuance, assets	0		0
Sales, assets	0		(9)
Settlements, assets	0		0
Balance at end of period, asset	40		40
Unrealized gains (losses) still held, assets	(4)		(5)
Investments | Mortgage-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	90	30	145
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(6)	2	(15)
Transfers into Level 3	0	22	1
Transfers out of Level 3, assets	(10)	0	(49)
Purchases, assets	0	3	4
Issuance, assets	0	0	0
Sales, assets	(6)	(5)	(18)
Settlements, assets	0	0	0
Balance at end of period, asset	68	52	68	52
Unrealized gains (losses) still held, assets	(6)	(21)	(9)
Investments | U.S. Treasury and federal agency securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1	0	1
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(1)	0	(1)
Transfers into Level 3	0	0	0
Transfers out of Level 3, assets	0	0	0
Purchases, assets	0	0	0
Issuance, assets	0	0	0
Sales, assets	0	0	0
Settlements, assets	0	0	0
Balance at end of period, asset	0	0	0	0
Unrealized gains (losses) still held, assets	0	0	0
Investments | State and municipal
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	705	794	772
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(34)	8	(78)
Transfers into Level 3	0	54	0
Transfers out of Level 3, assets	(131)	(108)	(142)
Purchases, assets	1	2	1
Issuance, assets	0	0	0
Sales, assets	(2)	(2)	(14)
Settlements, assets	0	0	0
Balance at end of period, asset	539	748	539	748
Unrealized gains (losses) still held, assets	(14)	6	(47)
Investments | Foreign government
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,029	523	786
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(15)	3	(39)
Transfers into Level 3	0	440	250
Transfers out of Level 3, assets	(54)	(289)	(113)
Purchases, assets	202	315	385
Issuance, assets	0	0	0
Sales, assets	(161)	(35)	(268)
Settlements, assets	0	0	0
Balance at end of period, asset	1,001	957	1,001	957
Unrealized gains (losses) still held, assets	(16)	3	(19)
Investments | Corporate
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	237	56	188
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(3)	(7)	(7)
Transfers into Level 3	100	32	153
Transfers out of Level 3, assets	0	0	0
Purchases, assets	0	30	0
Issuance, assets	0	0	0
Sales, assets	0	(7)	0
Settlements, assets	0	0	0
Balance at end of period, asset	334	104	334	104
Unrealized gains (losses) still held, assets	(1)	(1)	(2)
Investments | Marketable equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	16		16
Net realized/unrealized gains (losses) included in principal transactions	0		0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(6)		(6)
Transfers into Level 3	0		0
Transfers out of Level 3, assets	0		0
Purchases, assets	0		0
Issuance, assets	0		0
Sales, assets	0		0
Settlements, assets	0		0
Balance at end of period, asset	10		10
Unrealized gains (losses) still held, assets	(7)		(7)
Investments | Asset-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	2	4	3
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(1)	(21)	11
Transfers into Level 3	0	33	0
Transfers out of Level 3, assets	0	0	0
Purchases, assets	0	0	0
Issuance, assets	0	0	0
Sales, assets	0	(13)	(13)
Settlements, assets	0	0	0
Balance at end of period, asset	1	3	1	3
Unrealized gains (losses) still held, assets	0	1	0
Investments | Non-marketable equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	298	352	316
Net realized/unrealized gains (losses) included in principal transactions	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	2	30	(12)
Transfers into Level 3	0	0	11
Transfers out of Level 3, assets	0	0	0
Purchases, assets	20	0	20
Issuance, assets	0	0	0
Sales, assets	(10)	0	(25)
Settlements, assets	0	0	0
Balance at end of period, asset	310	382	310	382
Unrealized gains (losses) still held, assets	(1)	2	(1)
Investments | U.S. government-sponsored agency guaranteed
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				30
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				2
Transfers into Level 3				22
Transfers out of Level 3, assets				0
Purchases, assets				3
Issuance, assets				0
Sales, assets				(5)
Settlements, assets				0
Balance at end of period, asset		52		52
Unrealized gains (losses) still held, assets				(42)
Investments | Mortgage-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				30
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				2
Transfers into Level 3				22
Transfers out of Level 3, assets				0
Purchases, assets				3
Issuance, assets				0
Sales, assets				(5)
Settlements, assets				0
Balance at end of period, asset		52		52
Unrealized gains (losses) still held, assets				(42)
Investments | U.S. Treasury and federal agency securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				0
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				0
Transfers into Level 3				0
Transfers out of Level 3, assets				0
Purchases, assets				0
Issuance, assets				0
Sales, assets				0
Settlements, assets				0
Balance at end of period, asset		0		0
Unrealized gains (losses) still held, assets				0
Investments | State and municipal
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				834
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				(10)
Transfers into Level 3				58
Transfers out of Level 3, assets				(108)
Purchases, assets				3
Issuance, assets				0
Sales, assets				(29)
Settlements, assets				0
Balance at end of period, asset		748		748
Unrealized gains (losses) still held, assets				(8)
Investments | Foreign government
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				268
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				1
Transfers into Level 3				440
Transfers out of Level 3, assets				(289)
Purchases, assets				645
Issuance, assets				0
Sales, assets				(108)
Settlements, assets				0
Balance at end of period, asset		957		957
Unrealized gains (losses) still held, assets				3
Investments | Corporate
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				60
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				(11)
Transfers into Level 3				32
Transfers out of Level 3, assets				0
Purchases, assets				30
Issuance, assets				0
Sales, assets				(7)
Settlements, assets				0
Balance at end of period, asset		104		104
Unrealized gains (losses) still held, assets				(1)
Investments | Asset-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				1
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				(21)
Transfers into Level 3				36
Transfers out of Level 3, assets				0
Purchases, assets				0
Issuance, assets				0
Sales, assets				(13)
Settlements, assets				0
Balance at end of period, asset		3		3
Unrealized gains (losses) still held, assets				(37)
Investments | Non-marketable equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset				349
Net realized/unrealized gains (losses) included in principal transactions				0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets				40
Transfers into Level 3				1
Transfers out of Level 3, assets				0
Purchases, assets				0
Issuance, assets				0
Sales, assets				(8)
Settlements, assets				0
Balance at end of period, asset		382		382
Unrealized gains (losses) still held, assets				2
Loans
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	622	1,944	711	1,985
Net realized/unrealized gains (losses) included in principal transactions	0	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	(105)	476	(190)	348
Transfers into Level 3	1	60	1	271
Transfers out of Level 3, assets	(193)	(2,051)	(195)	(2,051)
Purchases, assets	0	0	0	0
Issuance, assets	1	0	1	1
Sales, assets	0	0	0	0
Settlements, assets	(1)	0	(3)	(125)
Balance at end of period, asset	325	429	325	429
Unrealized gains (losses) still held, assets	(7)	169	166	100
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Transfers out of Level 3		(2,100)		(2,100)
Mortgage servicing rights
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	520	433	404	336
Net realized/unrealized gains (losses) included in principal transactions	0	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	59	(21)	158	52
Transfers into Level 3		0	0	0
Transfers out of Level 3, assets	0	0	0	0
Purchases, assets		0	0	0
Issuance, assets	35	25	69	68
Sales, assets		0	0	0
Settlements, assets	(14)	(18)	(31)	(37)
Balance at end of period, asset	600	419	600	419
Unrealized gains (losses) still held, assets	59	(21)	157	59
Other financial assets measured on a recurring basis
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	68	0	73	0
Net realized/unrealized gains (losses) included in principal transactions	0	0	0	0
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	4	0	7	0
Transfers into Level 3	7	55	7	55
Transfers out of Level 3, assets	(12)	0	(16)	0
Purchases, assets	13	0	14	0
Issuance, assets	15	0	40	0
Sales, assets	0	0	(1)	0
Settlements, assets	(32)	0	(61)	0
Balance at end of period, asset	63	55	63	55
Unrealized gains (losses) still held, assets	$ 7	$ 0	$ 48	$ 0