Fair Value Measurements - Reconciliation (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |
|
|
|
| Balance, beginning |
$ (920)
|
$ (224)
|
$ 1,468
|
| Gains (Losses) in Earnings |
1,335
|
463
|
(304)
|
| Gains (Losses) in OCI (2) |
(7)
|
0
|
0
|
| Purchases |
273
|
823
|
824
|
| Sales |
(863)
|
(1,738)
|
(1,467)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(261)
|
(432)
|
(1,362)
|
| Gross Transfers into Level 3 |
(40)
|
28
|
(10)
|
| Gross Transfers out of Level 3 |
42
|
160
|
627
|
| Balance, ending |
(441)
|
(920)
|
(224)
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
|
| Gross Derivative Assets |
689,700
|
984,800
|
|
| Gross Derivative Liabilities |
682,200
|
981,800
|
|
| 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 |
0
|
|
|
| Gains (Losses) in Earnings |
(11)
|
|
|
| Gains (Losses) in OCI (2) |
0
|
|
|
| Purchases |
0
|
|
|
| Sales |
0
|
|
|
| Issuances |
(131)
|
|
|
| Settlements |
217
|
|
|
| Gross Transfers into Level 3 |
(411)
|
|
|
| Gross Transfers out of Level 3 |
1
|
|
|
| Balance, ending |
(335)
|
0
|
|
| Corporate securities, trading loans and other |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(36)
|
(35)
|
(64)
|
| Gains (Losses) in Earnings |
19
|
1
|
10
|
| Gains (Losses) in OCI (2) |
0
|
0
|
0
|
| Purchases |
30
|
10
|
43
|
| Sales |
(34)
|
(13)
|
(54)
|
| Issuances |
0
|
0
|
(5)
|
| Settlements |
0
|
0
|
0
|
| Gross Transfers into Level 3 |
0
|
(9)
|
(9)
|
| Gross Transfers out of Level 3 |
0
|
10
|
44
|
| Balance, ending |
(21)
|
(36)
|
(35)
|
| Short-term borrowings |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
0
|
|
|
| Gains (Losses) in Earnings |
17
|
|
|
| Gains (Losses) in OCI (2) |
0
|
|
|
| Purchases |
0
|
|
|
| Sales |
0
|
|
|
| Issuances |
(52)
|
|
|
| Settlements |
10
|
|
|
| Gross Transfers into Level 3 |
(24)
|
|
|
| Gross Transfers out of Level 3 |
19
|
|
|
| Balance, ending |
(30)
|
0
|
|
| Accrued expenses and other liabilities |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(10)
|
(10)
|
(15)
|
| Gains (Losses) in Earnings |
1
|
2
|
30
|
| Gains (Losses) in OCI (2) |
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
| Issuances |
0
|
(3)
|
(751)
|
| Settlements |
0
|
0
|
724
|
| Gross Transfers into Level 3 |
0
|
0
|
(1)
|
| Gross Transfers out of Level 3 |
0
|
1
|
3
|
| Balance, ending |
(9)
|
(10)
|
(10)
|
| Long-term debt |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(2,362)
|
(1,990)
|
(2,301)
|
| Gains (Losses) in Earnings |
287
|
49
|
13
|
| Gains (Losses) in OCI (2) |
19
|
0
|
0
|
| Purchases |
616
|
169
|
358
|
| Sales |
0
|
0
|
(4)
|
| Issuances |
(188)
|
(615)
|
(172)
|
| Settlements |
273
|
540
|
258
|
| Gross Transfers into Level 3 |
(1,592)
|
(1,581)
|
(1,331)
|
| Gross Transfers out of Level 3 |
1,434
|
1,066
|
1,189
|
| Balance, ending |
(1,513)
|
(2,362)
|
(1,990)
|
| Level 3 | Recurring |
|
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |
|
|
|
| Balance, beginning |
(920)
|
|
|
| Balance, ending |
(441)
|
(920)
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
|
| Gross Derivative Assets |
5,134
|
6,851
|
7,300
|
| Gross Derivative Liabilities |
5,575
|
7,771
|
7,500
|
| U.S. government and agency securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
0
|
0
|
|
| Gains (Losses) in Earnings |
|
0
|
|
| Gains (Losses) in OCI |
|
0
|
|
| Purchases |
|
87
|
|
| Sales |
|
(87)
|
|
| Settlements |
|
0
|
|
| Gross Transfers into Level 3 |
|
0
|
|
| Gross Transfers out of Level 3 |
|
0
|
|
| Balance, ending |
|
0
|
0
|
| Corporate securities, trading loans and other |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
3,270
|
3,559
|
3,726
|
| Gains (Losses) in Earnings |
(31)
|
180
|
242
|
| Gains (Losses) in OCI |
(11)
|
0
|
0
|
| Purchases |
1,540
|
1,675
|
3,848
|
| Sales |
(1,616)
|
(857)
|
(3,110)
|
| Issuances |
0
|
|
59
|
| Settlements |
(1,122)
|
(938)
|
(651)
|
| Gross Transfers into Level 3 |
1,570
|
1,275
|
890
|
| Gross Transfers out of Level 3 |
(762)
|
(1,624)
|
(1,445)
|
| Balance, ending |
2,838
|
3,270
|
3,559
|
| Equity securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
352
|
386
|
545
|
| Gains (Losses) in Earnings |
9
|
0
|
74
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
49
|
104
|
96
|
| Sales |
(11)
|
(86)
|
(175)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(11)
|
(16)
|
(100)
|
| Gross Transfers into Level 3 |
41
|
146
|
70
|
| Gross Transfers out of Level 3 |
(22)
|
(182)
|
(124)
|
| Balance, ending |
407
|
352
|
386
|
| Non-U.S. sovereign debt |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
574
|
468
|
353
|
| Gains (Losses) in Earnings |
114
|
30
|
50
|
| Gains (Losses) in OCI |
(179)
|
0
|
0
|
| Purchases |
185
|
120
|
122
|
| Sales |
(1)
|
(34)
|
(18)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(145)
|
(19)
|
(36)
|
| Gross Transfers into Level 3 |
0
|
11
|
2
|
| Gross Transfers out of Level 3 |
(27)
|
(2)
|
(5)
|
| Balance, ending |
521
|
574
|
468
|
| Mortgage trading loans and ABS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
2,063
|
4,631
|
4,935
|
| Gains (Losses) in Earnings |
154
|
199
|
53
|
| Gains (Losses) in OCI |
1
|
0
|
0
|
| Purchases |
1,250
|
1,643
|
2,514
|
| Sales |
(1,117)
|
(1,259)
|
(1,993)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(493)
|
(585)
|
(868)
|
| Gross Transfers into Level 3 |
50
|
39
|
20
|
| Gross Transfers out of Level 3 |
(40)
|
(2,605)
|
(30)
|
| Balance, ending |
1,868
|
2,063
|
4,631
|
| Trading Securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
6,259
|
9,044
|
9,559
|
| Gains (Losses) in Earnings |
246
|
409
|
419
|
| Gains (Losses) in OCI |
(189)
|
0
|
0
|
| Purchases |
3,024
|
3,629
|
6,580
|
| Sales |
(2,745)
|
(2,323)
|
(5,296)
|
| Issuances |
0
|
|
59
|
| Settlements |
(1,771)
|
(1,558)
|
(1,655)
|
| Gross Transfers into Level 3 |
1,661
|
1,471
|
982
|
| Gross Transfers out of Level 3 |
(851)
|
(4,413)
|
(1,604)
|
| Balance, ending |
5,634
|
6,259
|
9,044
|
| Non-agency residential MBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
279
|
0
|
|
| Gains (Losses) in Earnings |
(12)
|
(2)
|
|
| Gains (Losses) in OCI |
0
|
0
|
|
| Purchases |
134
|
11
|
|
| Sales |
0
|
0
|
|
| Issuances |
0
|
0
|
|
| Settlements |
(425)
|
0
|
|
| Gross Transfers into Level 3 |
167
|
270
|
|
| Gross Transfers out of Level 3 |
(37)
|
0
|
|
| Balance, ending |
106
|
279
|
0
|
| Commercial Mortgage |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
|
0
|
10
|
| Gains (Losses) in Earnings |
|
|
0
|
| Gains (Losses) in OCI |
|
|
0
|
| Purchases |
|
|
0
|
| Sales |
|
|
0
|
| Issuances |
|
|
0
|
| Settlements |
|
|
(10)
|
| Gross Transfers into Level 3 |
|
|
0
|
| Gross Transfers out of Level 3 |
|
|
0
|
| Balance, ending |
|
|
0
|
| Non-U.S. securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
10
|
107
|
0
|
| Gains (Losses) in Earnings |
0
|
(7)
|
5
|
| Gains (Losses) in OCI |
0
|
(11)
|
2
|
| Purchases |
|
241
|
1
|
| Sales |
0
|
0
|
(1)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(10)
|
(147)
|
0
|
| Gross Transfers into Level 3 |
0
|
0
|
100
|
| Gross Transfers out of Level 3 |
0
|
(173)
|
0
|
| Balance, ending |
0
|
10
|
107
|
| Corporate/Agency bonds |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
0
|
0
|
92
|
| Gains (Losses) in Earnings |
|
0
|
0
|
| Gains (Losses) in OCI |
|
0
|
4
|
| Purchases |
|
0
|
0
|
| Sales |
|
0
|
0
|
| Issuances |
|
0
|
0
|
| Settlements |
|
0
|
0
|
| Gross Transfers into Level 3 |
|
93
|
0
|
| Gross Transfers out of Level 3 |
|
(93)
|
(96)
|
| Balance, ending |
|
0
|
0
|
| Other taxable securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,667
|
3,847
|
3,928
|
| Gains (Losses) in Earnings |
0
|
9
|
9
|
| Gains (Losses) in OCI |
0
|
(8)
|
15
|
| Purchases |
189
|
154
|
1,055
|
| Sales |
0
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(160)
|
(1,381)
|
(1,155)
|
| Gross Transfers into Level 3 |
0
|
0
|
0
|
| Gross Transfers out of Level 3 |
(939)
|
(954)
|
(5)
|
| Balance, ending |
757
|
1,667
|
3,847
|
| Tax-exempt securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
599
|
806
|
1,061
|
| Gains (Losses) in Earnings |
0
|
8
|
3
|
| Gains (Losses) in OCI |
0
|
0
|
19
|
| Purchases |
0
|
0
|
0
|
| Sales |
0
|
(16)
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(30)
|
(235)
|
(109)
|
| Gross Transfers into Level 3 |
0
|
36
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
(168)
|
| Balance, ending |
569
|
599
|
806
|
| Available-for-sale Securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
2,555
|
4,760
|
5,091
|
| Gains (Losses) in Earnings |
(12)
|
8
|
17
|
| Gains (Losses) in OCI |
0
|
(19)
|
40
|
| Purchases |
323
|
406
|
1,056
|
| Sales |
0
|
(16)
|
(1)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(625)
|
(1,763)
|
(1,274)
|
| Gross Transfers into Level 3 |
167
|
399
|
100
|
| Gross Transfers out of Level 3 |
(976)
|
(1,220)
|
(269)
|
| Balance, ending |
1,432
|
2,555
|
4,760
|
| 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 |
0
|
|
|
| Gains (Losses) in Earnings |
(3)
|
|
|
| Gains (Losses) in OCI |
0
|
|
|
| Purchases |
33
|
|
|
| Issuances |
0
|
|
|
| Settlements |
0
|
|
|
| Gross Transfers into Level 3 |
0
|
|
|
| Gross Transfers out of Level 3 |
0
|
|
|
| Balance, ending |
30
|
0
|
|
| Loans and leases |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,983
|
3,057
|
2,287
|
| Gains (Losses) in Earnings |
(23)
|
69
|
98
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
0
|
310
|
| Sales |
(4)
|
(3)
|
(128)
|
| Issuances |
57
|
699
|
1,252
|
| Settlements |
(237)
|
(1,591)
|
(757)
|
| Gross Transfers into Level 3 |
144
|
25
|
19
|
| Gross Transfers out of Level 3 |
(300)
|
(273)
|
(24)
|
| Balance, ending |
1,620
|
1,983
|
3,057
|
| Mortgage servicing rights |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
3,530
|
5,042
|
5,716
|
| Gains (Losses) in Earnings |
187
|
(1,231)
|
1,941
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
| Sales |
(393)
|
(61)
|
(2,044)
|
| Issuances |
637
|
707
|
472
|
| Settlements |
(874)
|
(927)
|
(1,043)
|
| Gross Transfers into Level 3 |
0
|
0
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
0
|
| Balance, ending |
3,087
|
3,530
|
5,042
|
| Loans Held-for-Sale |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
173
|
929
|
2,733
|
| Gains (Losses) in Earnings |
(51)
|
45
|
62
|
| Gains (Losses) in OCI |
(8)
|
0
|
0
|
| Purchases |
771
|
59
|
8
|
| Sales |
(203)
|
(725)
|
(402)
|
| Issuances |
61
|
23
|
4
|
| Settlements |
(61)
|
(216)
|
(1,507)
|
| Gross Transfers into Level 3 |
203
|
83
|
34
|
| Gross Transfers out of Level 3 |
(98)
|
(25)
|
(3)
|
| Balance, ending |
787
|
173
|
929
|
| Other assets |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
911
|
1,669
|
3,129
|
| Gains (Losses) in Earnings |
(55)
|
(98)
|
(288)
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
11
|
0
|
46
|
| Sales |
(130)
|
(430)
|
(383)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(51)
|
(245)
|
(1,019)
|
| Gross Transfers into Level 3 |
10
|
39
|
239
|
| Gross Transfers out of Level 3 |
(322)
|
(24)
|
(55)
|
| Balance, ending |
$ 374
|
$ 911
|
$ 1,669
|