Fair Value Measurements - Reconciliation (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |
|
|
|
| Balance, beginning |
$ (441)
|
$ (920)
|
$ (224)
|
| Total Realized/Unrealized Gains/(Losses) |
285
|
1,335
|
463
|
| Gains (Losses) in OCI |
0
|
(7)
|
0
|
| Purchases |
470
|
273
|
823
|
| Sales |
(1,155)
|
(863)
|
(1,738)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
76
|
(261)
|
(432)
|
| Gross Transfers into Level 3 |
(186)
|
(40)
|
28
|
| Gross Transfers out of Level 3 |
(362)
|
42
|
160
|
| Balance, ending |
(1,313)
|
(441)
|
(920)
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
(376)
|
605
|
(87)
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
|
| Gross derivative assets |
631,100
|
688,600
|
|
| Gross derivative liabilities |
628,300
|
681,100
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(335)
|
0
|
|
| Total Realized/Unrealized Gains/(Losses) |
(11)
|
(11)
|
|
| Gains (Losses) in OCI |
0
|
0
|
|
| Purchases |
0
|
0
|
|
| Sales |
0
|
0
|
|
| Issuances |
(22)
|
(131)
|
|
| Settlements |
27
|
217
|
|
| Gross Transfers into Level 3 |
(19)
|
(411)
|
|
| Gross Transfers out of Level 3 |
1
|
1
|
|
| Balance, ending |
(359)
|
(335)
|
0
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
4
|
0
|
|
| Corporate securities, trading loans and other |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(21)
|
(36)
|
(35)
|
| Total Realized/Unrealized Gains/(Losses) |
5
|
19
|
1
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
30
|
10
|
| Sales |
(11)
|
(34)
|
(13)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
0
|
0
|
0
|
| Gross Transfers into Level 3 |
0
|
0
|
(9)
|
| Gross Transfers out of Level 3 |
0
|
0
|
10
|
| Balance, ending |
(27)
|
(21)
|
(36)
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
4
|
(3)
|
1
|
| Short-term borrowings |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(30)
|
0
|
|
| Total Realized/Unrealized Gains/(Losses) |
1
|
17
|
|
| Gains (Losses) in OCI |
0
|
0
|
|
| Purchases |
0
|
0
|
|
| Sales |
0
|
0
|
|
| Issuances |
0
|
(52)
|
|
| Settlements |
29
|
10
|
|
| Gross Transfers into Level 3 |
0
|
(24)
|
|
| Gross Transfers out of Level 3 |
0
|
19
|
|
| Balance, ending |
0
|
(30)
|
0
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
1
|
|
| Accrued expenses and other liabilities |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(9)
|
(10)
|
(10)
|
| Total Realized/Unrealized Gains/(Losses) |
0
|
1
|
2
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
| Issuances |
0
|
0
|
(3)
|
| Settlements |
0
|
0
|
0
|
| Gross Transfers into Level 3 |
0
|
0
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
1
|
| Balance, ending |
(9)
|
(9)
|
(10)
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
1
|
1
|
| Long-term debt |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(1,513)
|
(2,362)
|
(1,990)
|
| Total Realized/Unrealized Gains/(Losses) |
(74)
|
287
|
49
|
| Gains (Losses) in OCI |
(20)
|
19
|
0
|
| Purchases |
140
|
616
|
169
|
| Sales |
0
|
0
|
0
|
| Issuances |
(521)
|
(188)
|
(615)
|
| Settlements |
948
|
273
|
540
|
| Gross Transfers into Level 3 |
(939)
|
(1,592)
|
(1,581)
|
| Gross Transfers out of Level 3 |
465
|
1,434
|
1,066
|
| Balance, ending |
(1,514)
|
(1,513)
|
(2,362)
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
(184)
|
255
|
(8)
|
| Level 3 | Recurring |
|
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |
|
|
|
| Balance, beginning |
(441)
|
|
|
| Balance, ending |
(1,313)
|
(441)
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
|
| Gross derivative assets |
3,931
|
5,134
|
6,900
|
| Gross derivative liabilities |
5,244
|
5,575
|
7,800
|
| U.S. government and agency securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
|
0
|
0
|
| Total Realized/Unrealized Gains/(Losses) |
|
|
0
|
| Gains (Losses) in OCI |
|
|
0
|
| Purchases |
|
|
87
|
| Sales |
|
|
(87)
|
| Issuances |
|
|
0
|
| Settlements |
|
|
0
|
| Gross Transfers into Level 3 |
|
|
0
|
| Gross Transfers out of Level 3 |
|
|
0
|
| Balance, ending |
|
|
0
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
|
|
0
|
| Corporate securities, trading loans and other |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
2,838
|
3,270
|
3,559
|
| Total Realized/Unrealized Gains/(Losses) |
78
|
(31)
|
180
|
| Gains (Losses) in OCI |
2
|
(11)
|
0
|
| Purchases |
1,508
|
1,540
|
1,675
|
| Sales |
(847)
|
(1,616)
|
(857)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(725)
|
(1,122)
|
(938)
|
| Gross Transfers into Level 3 |
728
|
1,570
|
1,275
|
| Gross Transfers out of Level 3 |
(805)
|
(762)
|
(1,624)
|
| Balance, ending |
2,777
|
2,838
|
3,270
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
(82)
|
(123)
|
69
|
| Equity securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
407
|
352
|
386
|
| Total Realized/Unrealized Gains/(Losses) |
74
|
9
|
0
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
73
|
49
|
104
|
| Sales |
(169)
|
(11)
|
(86)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(82)
|
(11)
|
(16)
|
| Gross Transfers into Level 3 |
70
|
41
|
146
|
| Gross Transfers out of Level 3 |
(92)
|
(22)
|
(182)
|
| Balance, ending |
281
|
407
|
352
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
(59)
|
3
|
(8)
|
| Non-U.S. sovereign debt |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
521
|
574
|
468
|
| Total Realized/Unrealized Gains/(Losses) |
122
|
114
|
30
|
| Gains (Losses) in OCI |
91
|
(179)
|
0
|
| Purchases |
12
|
185
|
120
|
| Sales |
(146)
|
(1)
|
(34)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(90)
|
(145)
|
(19)
|
| Gross Transfers into Level 3 |
0
|
0
|
11
|
| Gross Transfers out of Level 3 |
0
|
(27)
|
(2)
|
| Balance, ending |
510
|
521
|
574
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
120
|
74
|
31
|
| Mortgage trading loans, ABS and other MBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,868
|
2,063
|
4,631
|
| Total Realized/Unrealized Gains/(Losses) |
188
|
154
|
199
|
| Gains (Losses) in OCI |
(2)
|
1
|
0
|
| Purchases |
988
|
1,250
|
1,643
|
| Sales |
(1,491)
|
(1,117)
|
(1,259)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(344)
|
(493)
|
(585)
|
| Gross Transfers into Level 3 |
158
|
50
|
39
|
| Gross Transfers out of Level 3 |
(154)
|
(40)
|
(2,605)
|
| Balance, ending |
1,211
|
1,868
|
2,063
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
64
|
(93)
|
79
|
| Trading Securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
5,634
|
6,259
|
9,044
|
| Total Realized/Unrealized Gains/(Losses) |
462
|
246
|
409
|
| Gains (Losses) in OCI |
91
|
(189)
|
0
|
| Purchases |
2,581
|
3,024
|
3,629
|
| Sales |
(2,653)
|
(2,745)
|
(2,323)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(1,241)
|
(1,771)
|
(1,558)
|
| Gross Transfers into Level 3 |
956
|
1,661
|
1,471
|
| Gross Transfers out of Level 3 |
(1,051)
|
(851)
|
(4,413)
|
| Balance, ending |
4,779
|
5,634
|
6,259
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
43
|
(139)
|
171
|
| Non-agency residential MBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
106
|
279
|
0
|
| Total Realized/Unrealized Gains/(Losses) |
0
|
(12)
|
(2)
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
134
|
11
|
| Sales |
(106)
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
0
|
(425)
|
0
|
| Gross Transfers into Level 3 |
0
|
167
|
270
|
| Gross Transfers out of Level 3 |
0
|
(37)
|
0
|
| Balance, ending |
0
|
106
|
279
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
|
|
0
|
| Non-U.S. securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
0
|
10
|
107
|
| Total Realized/Unrealized Gains/(Losses) |
0
|
0
|
(7)
|
| Gains (Losses) in OCI |
(6)
|
0
|
(11)
|
| Purchases |
584
|
0
|
241
|
| Sales |
(92)
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(263)
|
(10)
|
(147)
|
| Gross Transfers into Level 3 |
6
|
0
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
(173)
|
| Balance, ending |
229
|
0
|
10
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
0
|
0
|
| Other taxable securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
757
|
1,667
|
3,847
|
| Total Realized/Unrealized Gains/(Losses) |
4
|
0
|
9
|
| Gains (Losses) in OCI |
(2)
|
0
|
(8)
|
| Purchases |
0
|
189
|
154
|
| Sales |
0
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(83)
|
(160)
|
(1,381)
|
| Gross Transfers into Level 3 |
0
|
0
|
93
|
| Gross Transfers out of Level 3 |
(82)
|
(939)
|
(1,047)
|
| Balance, ending |
594
|
757
|
1,667
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
0
|
0
|
| Tax-exempt securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
569
|
599
|
806
|
| Total Realized/Unrealized Gains/(Losses) |
0
|
0
|
8
|
| Gains (Losses) in OCI |
(1)
|
0
|
0
|
| Purchases |
1
|
0
|
0
|
| Sales |
0
|
0
|
(16)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(2)
|
(30)
|
(235)
|
| Gross Transfers into Level 3 |
10
|
0
|
36
|
| Gross Transfers out of Level 3 |
(35)
|
0
|
0
|
| Balance, ending |
542
|
569
|
599
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
0
|
0
|
| Available-for-sale Securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,432
|
2,555
|
4,760
|
| Total Realized/Unrealized Gains/(Losses) |
4
|
(12)
|
8
|
| Gains (Losses) in OCI |
(9)
|
0
|
(19)
|
| Purchases |
585
|
323
|
406
|
| Sales |
(198)
|
0
|
(16)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(348)
|
(625)
|
(1,763)
|
| Gross Transfers into Level 3 |
16
|
167
|
399
|
| Gross Transfers out of Level 3 |
(117)
|
(976)
|
(1,220)
|
| Balance, ending |
1,365
|
1,432
|
2,555
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
0
|
0
|
| Other debt securities carried at fair value – Non-agency residential MBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
30
|
0
|
|
| Total Realized/Unrealized Gains/(Losses) |
(5)
|
(3)
|
|
| Gains (Losses) in OCI |
0
|
0
|
|
| Purchases |
0
|
33
|
|
| Sales |
0
|
0
|
|
| Issuances |
0
|
0
|
|
| Settlements |
0
|
0
|
|
| Gross Transfers into Level 3 |
0
|
0
|
|
| Gross Transfers out of Level 3 |
0
|
0
|
|
| Balance, ending |
25
|
30
|
0
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
0
|
0
|
|
| Loans and leases |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,620
|
1,983
|
3,057
|
| Total Realized/Unrealized Gains/(Losses) |
(44)
|
(23)
|
69
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
69
|
0
|
0
|
| Sales |
(553)
|
(4)
|
(3)
|
| Issuances |
50
|
57
|
699
|
| Settlements |
(194)
|
(237)
|
(1,591)
|
| Gross Transfers into Level 3 |
6
|
144
|
25
|
| Gross Transfers out of Level 3 |
(234)
|
(300)
|
(273)
|
| Balance, ending |
720
|
1,620
|
1,983
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
17
|
13
|
76
|
| Mortgage servicing rights |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
3,087
|
3,530
|
5,042
|
| Total Realized/Unrealized Gains/(Losses) |
149
|
187
|
(1,231)
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
| Sales |
(80)
|
(393)
|
(61)
|
| Issuances |
411
|
637
|
707
|
| Settlements |
(820)
|
(874)
|
(927)
|
| Gross Transfers into Level 3 |
0
|
0
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
0
|
| Balance, ending |
2,747
|
3,087
|
3,530
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
(107)
|
(85)
|
(1,753)
|
| Loans Held-for-Sale |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
787
|
173
|
929
|
| Total Realized/Unrealized Gains/(Losses) |
79
|
(51)
|
45
|
| Gains (Losses) in OCI |
50
|
(8)
|
0
|
| Purchases |
22
|
771
|
59
|
| Sales |
(256)
|
(203)
|
(725)
|
| Issuances |
0
|
61
|
23
|
| Settlements |
(93)
|
(61)
|
(216)
|
| Gross Transfers into Level 3 |
173
|
203
|
83
|
| Gross Transfers out of Level 3 |
(106)
|
(98)
|
(25)
|
| Balance, ending |
656
|
787
|
173
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
70
|
(39)
|
(4)
|
| Other assets |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
374
|
911
|
1,669
|
| Total Realized/Unrealized Gains/(Losses) |
(13)
|
(55)
|
(98)
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
38
|
11
|
0
|
| Sales |
(111)
|
(130)
|
(430)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(52)
|
(51)
|
(245)
|
| Gross Transfers into Level 3 |
3
|
10
|
39
|
| Gross Transfers out of Level 3 |
0
|
(322)
|
(24)
|
| Balance, ending |
239
|
374
|
911
|
| Change in Unrealized Gains/(Losses) Related to Financial Instruments Still Held |
$ (36)
|
$ (61)
|
$ 52
|