Fair Value Measurements - Level 3 Reconciliation (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gains (Losses) in OCI |
$ (105)
|
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |
|
|
|
| Balance, beginning |
(1,714)
|
$ (1,313)
|
$ (441)
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
106
|
(984)
|
285
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
531
|
664
|
470
|
| Sales |
(1,179)
|
(979)
|
(1,155)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
778
|
949
|
76
|
| Gross Transfers into Level 3 |
39
|
48
|
(186)
|
| Gross Transfers out of Level 3 |
504
|
(99)
|
(362)
|
| Balance, ending |
(935)
|
(1,714)
|
(1,313)
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
(116)
|
(409)
|
(376)
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
|
| Derivative assets, gross |
328,800
|
351,600
|
|
| Derivative liabilities, gross |
317,800
|
346,000
|
|
| 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
|
(359)
|
(335)
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
|
(5)
|
(11)
|
| Gains (Losses) in OCI |
|
0
|
0
|
| Purchases |
|
0
|
0
|
| Sales |
|
0
|
0
|
| Issuances |
|
(12)
|
(22)
|
| Settlements |
|
171
|
27
|
| Gross Transfers into Level 3 |
|
(58)
|
(19)
|
| Gross Transfers out of Level 3 |
|
263
|
1
|
| Balance, ending |
|
0
|
(359)
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
|
0
|
4
|
| Trading account liabilities – Corporate securities and other |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(24)
|
(27)
|
(21)
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
11
|
14
|
5
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
9
|
8
|
0
|
| Sales |
(12)
|
(17)
|
(11)
|
| Issuances |
(2)
|
(2)
|
0
|
| Settlements |
0
|
0
|
0
|
| Gross Transfers into Level 3 |
0
|
0
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
0
|
| Balance, ending |
(18)
|
(24)
|
(27)
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
(7)
|
2
|
4
|
| Short-term borrowings |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
|
0
|
(30)
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
|
|
1
|
| Gains (Losses) in OCI |
|
|
0
|
| Purchases |
|
|
0
|
| Sales |
|
|
0
|
| Issuances |
|
|
0
|
| Settlements |
|
|
29
|
| Gross Transfers into Level 3 |
|
|
0
|
| Gross Transfers out of Level 3 |
|
|
0
|
| Balance, ending |
|
|
0
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
|
|
0
|
| Accrued expenses and other liabilities |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(8)
|
(9)
|
(9)
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
0
|
0
|
0
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
8
|
1
|
0
|
| Gross Transfers into Level 3 |
0
|
0
|
0
|
| Gross Transfers out of Level 3 |
0
|
0
|
0
|
| Balance, ending |
0
|
(8)
|
(9)
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
0
|
0
|
0
|
| Long-term debt |
|
|
|
| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
(1,863)
|
(1,514)
|
(1,513)
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
103
|
(135)
|
(74)
|
| Gains (Losses) in OCI |
4
|
(31)
|
(20)
|
| Purchases |
9
|
84
|
140
|
| Sales |
0
|
0
|
0
|
| Issuances |
(141)
|
(288)
|
(521)
|
| Settlements |
486
|
514
|
948
|
| Gross Transfers into Level 3 |
(262)
|
(711)
|
(939)
|
| Gross Transfers out of Level 3 |
847
|
218
|
465
|
| Balance, ending |
(817)
|
(1,863)
|
(1,514)
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
95
|
(196)
|
(184)
|
| Level 3 | Recurring |
|
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
|
| Derivative assets, gross |
3,466
|
4,067
|
3,900
|
| Derivative liabilities, gross |
4,401
|
5,781
|
5,200
|
| Corporate securities, trading loans and other |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,864
|
2,777
|
2,838
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
(32)
|
229
|
78
|
| Gains (Losses) in OCI |
(1)
|
0
|
2
|
| Purchases |
436
|
547
|
1,508
|
| Sales |
(403)
|
(702)
|
(847)
|
| Issuances |
5
|
5
|
0
|
| Settlements |
(568)
|
(666)
|
(725)
|
| Gross Transfers into Level 3 |
804
|
728
|
728
|
| Gross Transfers out of Level 3 |
(547)
|
(1,054)
|
(805)
|
| Balance, ending |
1,558
|
1,864
|
2,777
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
(117)
|
2
|
(82)
|
| Equity securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
235
|
281
|
407
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
(17)
|
18
|
74
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
44
|
55
|
73
|
| Sales |
(11)
|
(70)
|
(169)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(4)
|
(10)
|
(82)
|
| Gross Transfers into Level 3 |
78
|
146
|
70
|
| Gross Transfers out of Level 3 |
(49)
|
(185)
|
(92)
|
| Balance, ending |
276
|
235
|
281
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
(22)
|
(1)
|
(59)
|
| Non-U.S. sovereign debt |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
556
|
510
|
521
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
47
|
74
|
122
|
| Gains (Losses) in OCI |
(44)
|
(8)
|
91
|
| Purchases |
13
|
53
|
12
|
| Sales |
(57)
|
(59)
|
(146)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(30)
|
(73)
|
(90)
|
| Gross Transfers into Level 3 |
117
|
72
|
0
|
| Gross Transfers out of Level 3 |
(137)
|
(13)
|
0
|
| Balance, ending |
465
|
556
|
510
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
48
|
70
|
120
|
| Mortgage trading loans, ABS and other MBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
1,498
|
1,211
|
1,868
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
148
|
165
|
188
|
| Gains (Losses) in OCI |
3
|
(2)
|
(2)
|
| Purchases |
585
|
1,210
|
988
|
| Sales |
(910)
|
(990)
|
(1,491)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(158)
|
(233)
|
(344)
|
| Gross Transfers into Level 3 |
705
|
218
|
158
|
| Gross Transfers out of Level 3 |
(236)
|
(81)
|
(154)
|
| Balance, ending |
1,635
|
1,498
|
1,211
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
97
|
72
|
64
|
| Trading account assets |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
4,153
|
4,779
|
5,634
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
146
|
486
|
462
|
| Gains (Losses) in OCI |
(42)
|
(10)
|
91
|
| Purchases |
1,078
|
1,865
|
2,581
|
| Sales |
(1,381)
|
(1,821)
|
(2,653)
|
| Issuances |
5
|
5
|
0
|
| Settlements |
(760)
|
(982)
|
(1,241)
|
| Gross Transfers into Level 3 |
1,704
|
1,164
|
956
|
| Gross Transfers out of Level 3 |
(969)
|
(1,333)
|
(1,051)
|
| Balance, ending |
3,934
|
4,153
|
4,779
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
6
|
143
|
43
|
| Non-agency residential MBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
0
|
0
|
106
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
27
|
|
0
|
| Gains (Losses) in OCI |
(33)
|
|
0
|
| Purchases |
0
|
|
0
|
| Sales |
(71)
|
|
(106)
|
| Issuances |
0
|
|
0
|
| Settlements |
(25)
|
|
0
|
| Gross Transfers into Level 3 |
774
|
|
0
|
| Gross Transfers out of Level 3 |
(75)
|
|
0
|
| Balance, ending |
597
|
0
|
0
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
0
|
|
0
|
| Non-U.S. securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
25
|
229
|
0
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
0
|
2
|
0
|
| Gains (Losses) in OCI |
(1)
|
16
|
(6)
|
| Purchases |
0
|
49
|
584
|
| Sales |
(10)
|
0
|
(92)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(15)
|
(271)
|
(263)
|
| Gross Transfers into Level 3 |
3
|
0
|
6
|
| Gross Transfers out of Level 3 |
0
|
0
|
0
|
| Balance, ending |
2
|
25
|
229
|
| Change in Unrealized Gains/(Losses) In Net Income 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 |
509
|
594
|
757
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
1
|
4
|
4
|
| Gains (Losses) in OCI |
(3)
|
8
|
(2)
|
| Purchases |
0
|
5
|
0
|
| Sales |
(23)
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(11)
|
(42)
|
(83)
|
| Gross Transfers into Level 3 |
60
|
34
|
0
|
| Gross Transfers out of Level 3 |
(526)
|
(94)
|
(82)
|
| Balance, ending |
7
|
509
|
594
|
| Change in Unrealized Gains/(Losses) In Net Income 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 |
469
|
542
|
569
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
0
|
1
|
0
|
| Gains (Losses) in OCI |
0
|
3
|
(1)
|
| Purchases |
0
|
14
|
1
|
| Sales |
0
|
(70)
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(1)
|
(11)
|
(2)
|
| Gross Transfers into Level 3 |
1
|
35
|
10
|
| Gross Transfers out of Level 3 |
(469)
|
(45)
|
(35)
|
| Balance, ending |
0
|
469
|
542
|
| Change in Unrealized Gains/(Losses) In Net Income 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 |
1,003
|
1,365
|
1,432
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
28
|
7
|
4
|
| Gains (Losses) in OCI |
(37)
|
27
|
(9)
|
| Purchases |
0
|
68
|
585
|
| Sales |
(104)
|
(70)
|
(198)
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(52)
|
(324)
|
(348)
|
| Gross Transfers into Level 3 |
838
|
69
|
16
|
| Gross Transfers out of Level 3 |
(1,070)
|
(139)
|
(117)
|
| Balance, ending |
606
|
1,003
|
1,365
|
| Change in Unrealized Gains/(Losses) In Net Income 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 |
0
|
25
|
30
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
(18)
|
(1)
|
(5)
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
| Sales |
(8)
|
(21)
|
0
|
| Issuances |
0
|
0
|
0
|
| Settlements |
(34)
|
(3)
|
0
|
| Gross Transfers into Level 3 |
365
|
0
|
0
|
| Gross Transfers out of Level 3 |
(133)
|
0
|
0
|
| Balance, ending |
172
|
0
|
25
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
(18)
|
0
|
0
|
| Loans and leases |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
571
|
720
|
1,620
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
(16)
|
15
|
(44)
|
| Gains (Losses) in OCI |
0
|
0
|
0
|
| Purchases |
0
|
3
|
69
|
| Sales |
(134)
|
(34)
|
(553)
|
| Issuances |
0
|
0
|
50
|
| Settlements |
(83)
|
(126)
|
(194)
|
| Gross Transfers into Level 3 |
0
|
0
|
6
|
| Gross Transfers out of Level 3 |
0
|
(7)
|
(234)
|
| Balance, ending |
338
|
571
|
720
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
(9)
|
11
|
17
|
| Loans held-for-sale |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
690
|
656
|
787
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
44
|
100
|
79
|
| Gains (Losses) in OCI |
(26)
|
(3)
|
50
|
| Purchases |
71
|
3
|
22
|
| Sales |
0
|
(189)
|
(256)
|
| Issuances |
1
|
0
|
0
|
| Settlements |
(201)
|
(346)
|
(93)
|
| Gross Transfers into Level 3 |
23
|
501
|
173
|
| Gross Transfers out of Level 3 |
(60)
|
(32)
|
(106)
|
| Balance, ending |
542
|
690
|
656
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
31
|
14
|
70
|
| Other assets |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Balance, beginning |
2,425
|
2,986
|
3,461
|
| Total Realized/Unrealized Gains/(Losses) in Net Income |
414
|
144
|
136
|
| Gains (Losses) in OCI |
(38)
|
(57)
|
0
|
| Purchases |
2
|
2
|
38
|
| Sales |
(69)
|
(214)
|
(191)
|
| Issuances |
96
|
258
|
411
|
| Settlements |
(792)
|
(758)
|
(872)
|
| Gross Transfers into Level 3 |
929
|
64
|
3
|
| Gross Transfers out of Level 3 |
(35)
|
0
|
0
|
| Balance, ending |
2,932
|
2,425
|
2,986
|
| Change in Unrealized Gains/(Losses) In Net Income Related to Financial Instruments Still Held |
$ 149
|
$ (226)
|
$ (143)
|