Fair Value Measurements - Recurring Fair Value (Details) - USD ($)
$ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
| Assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
$ 52,524
|
$ 52,906
|
|
| Trading account assets |
219,118
|
209,358
|
|
| Derivative assets, gross |
337,300
|
351,600
|
|
| Derivative assets |
45,617
|
37,762
|
|
| Total available-for-sale debt securities |
239,048
|
302,631
|
|
| Other debt securities carried at fair value |
12,587
|
12,486
|
|
| Loans and leases |
5,731
|
5,710
|
|
| Loans held-for-sale |
3,116
|
2,156
|
|
| Other assets |
23,738
|
22,581
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
529
|
449
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
34,242
|
36,182
|
|
| Derivative liabilities, gross |
324,100
|
346,000
|
|
| Derivative liabilities |
36,189
|
34,300
|
|
| Short-term borrowings |
1,789
|
1,494
|
|
| Long-term debt |
28,677
|
31,786
|
|
| U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
52,306
|
53,523
|
|
| Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
136,112
|
192,929
|
|
| Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,678
|
6,804
|
|
| Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,137
|
2,669
|
|
| Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
13,510
|
13,684
|
|
| Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,876
|
5,770
|
|
| Other debt securities carried at fair value |
3
|
229
|
|
| Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
18,350
|
20,575
|
|
| Recurring |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,528
|
2,234
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
52,524
|
52,906
|
|
| Trading account assets |
219,118
|
209,358
|
|
| Netting adjustments |
(291,664)
|
(313,788)
|
|
| Derivative assets |
45,617
|
37,762
|
|
| Total available-for-sale debt securities |
239,048
|
302,631
|
|
| Other debt securities carried at fair value |
12,587
|
12,486
|
|
| Loans and leases |
5,731
|
5,710
|
|
| Loans held-for-sale |
3,116
|
2,156
|
|
| Other assets |
23,738
|
22,581
|
|
| Total assets |
603,007
|
647,824
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
529
|
449
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
34,242
|
36,182
|
|
| Total trading account liabilities |
89,964
|
81,187
|
|
| Netting adjustment |
(287,869)
|
(311,771)
|
|
| Derivative liabilities |
36,189
|
34,300
|
|
| Short-term borrowings |
1,789
|
1,494
|
|
| Accrued expenses and other liabilities |
24,516
|
22,840
|
|
| Long-term debt |
28,677
|
31,786
|
|
| Total liabilities |
215,906
|
208,238
|
|
| Mortgage servicing rights |
2,200
|
2,300
|
|
| Recurring | Securities Segregated for Compliance or Deposited with Clearing Organizations |
|
|
|
| Assets |
|
|
|
| Trading account assets |
14,200
|
16,800
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
40,928
|
40,642
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
15,765
|
18,000
|
|
| Recurring | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
28,815
|
30,578
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
8,424
|
6,925
|
|
| Recurring | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
95,189
|
84,940
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
43,416
|
36,904
|
|
| Recurring | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
25,660
|
22,940
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
22,359
|
19,358
|
|
| Recurring | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
18,697
|
20,586
|
|
| Recurring | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
9,829
|
9,672
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
52,306
|
53,523
|
|
| Recurring | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
136,112
|
192,929
|
|
| Recurring | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,678
|
6,804
|
|
| Recurring | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,137
|
2,669
|
|
| Other debt securities carried at fair value |
1,696
|
2,769
|
|
| Recurring | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
13,510
|
13,684
|
|
| Recurring | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
7,079
|
6,677
|
|
| Other debt securities carried at fair value |
10,888
|
9,488
|
|
| Recurring | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,876
|
5,770
|
|
| Other debt securities carried at fair value |
3
|
229
|
|
| Recurring | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
18,350
|
20,575
|
|
| Recurring | US Government-sponsored enterprises debt securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
19,900
|
21,300
|
|
| Recurring | Level 1 |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,528
|
2,234
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
112,194
|
106,012
|
|
| Derivative assets, gross |
9,961
|
6,305
|
|
| Total available-for-sale debt securities |
51,659
|
52,687
|
|
| Other debt securities carried at fair value |
9,943
|
8,191
|
|
| Loans and leases |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
|
| Other assets |
18,858
|
19,367
|
|
| Total assets |
204,143
|
194,796
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
0
|
0
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
0
|
0
|
|
| Total trading account liabilities |
66,642
|
62,261
|
|
| Derivative liabilities, gross |
9,142
|
6,029
|
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
22,667
|
21,887
|
|
| Long-term debt |
0
|
0
|
|
| Total liabilities |
98,451
|
90,177
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
39,677
|
38,720
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
15,403
|
17,266
|
|
| Recurring | Level 1 | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 1 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
66,850
|
60,747
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
38,743
|
33,019
|
|
| Recurring | Level 1 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
5,667
|
6,545
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
12,496
|
11,976
|
|
| Recurring | Level 1 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Recurring | Level 1 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
50,900
|
51,915
|
|
| Recurring | Level 1 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 1 | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
759
|
772
|
|
| Other debt securities carried at fair value |
9,943
|
8,191
|
|
| Recurring | Level 1 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 1 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 2 |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
0
|
0
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
52,524
|
52,906
|
|
| Trading account assets |
103,152
|
99,193
|
|
| Derivative assets, gross |
322,940
|
341,178
|
|
| Total available-for-sale debt securities |
186,834
|
248,941
|
|
| Other debt securities carried at fair value |
2,348
|
4,295
|
|
| Loans and leases |
5,321
|
5,139
|
|
| Loans held-for-sale |
2,590
|
1,466
|
|
| Other assets |
1,740
|
789
|
|
| Total assets |
677,449
|
753,907
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
529
|
449
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
34,242
|
36,182
|
|
| Total trading account liabilities |
23,305
|
18,902
|
|
| Derivative liabilities, gross |
309,966
|
334,261
|
|
| Short-term borrowings |
1,789
|
1,494
|
|
| Accrued expenses and other liabilities |
1,849
|
945
|
|
| Long-term debt |
27,754
|
29,923
|
|
| Total liabilities |
399,434
|
422,156
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
1,251
|
1,922
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
362
|
734
|
|
| Recurring | Level 2 | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
27,281
|
28,714
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
8,407
|
6,901
|
|
| Recurring | Level 2 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
28,049
|
23,958
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
4,673
|
3,885
|
|
| Recurring | Level 2 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
19,524
|
15,839
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
9,863
|
7,382
|
|
| Recurring | Level 2 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
18,697
|
20,586
|
|
| Recurring | Level 2 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
8,350
|
8,174
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,406
|
1,608
|
|
| Recurring | Level 2 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
136,112
|
192,929
|
|
| Recurring | Level 2 | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,678
|
6,804
|
|
| Recurring | Level 2 | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,593
|
2,669
|
|
| Other debt securities carried at fair value |
1,400
|
2,769
|
|
| Recurring | Level 2 | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
13,510
|
13,684
|
|
| Recurring | Level 2 | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
6,317
|
5,880
|
|
| Other debt securities carried at fair value |
945
|
1,297
|
|
| Recurring | Level 2 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,869
|
5,261
|
|
| Other debt securities carried at fair value |
3
|
229
|
|
| Recurring | Level 2 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
18,349
|
20,106
|
|
| Recurring | Level 3 |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
0
|
0
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
3,772
|
4,153
|
|
| Derivative assets, gross |
4,380
|
4,067
|
$ 3,900
|
| Total available-for-sale debt securities |
555
|
1,003
|
|
| Other debt securities carried at fair value |
296
|
0
|
|
| Loans and leases |
410
|
571
|
|
| Loans held-for-sale |
526
|
690
|
|
| Other assets |
3,140
|
2,425
|
|
| Total assets |
13,079
|
12,909
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
0
|
0
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
0
|
0
|
|
| Total trading account liabilities |
17
|
24
|
|
| Derivative liabilities, gross |
4,950
|
5,781
|
$ 5,900
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
0
|
8
|
|
| Long-term debt |
923
|
1,863
|
|
| Total liabilities |
5,890
|
7,676
|
|
| Recurring | Level 3 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
1,534
|
1,864
|
|
| Total assets |
1,500
|
1,900
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
17
|
24
|
|
| Recurring | Level 3 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
290
|
235
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
469
|
556
|
|
| Total assets |
469
|
556
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Recurring | Level 3 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
1,479
|
1,498
|
|
| Total assets |
1,500
|
1,500
|
|
| Recurring | Level 3 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
544
|
0
|
|
| Other debt securities carried at fair value |
296
|
0
|
|
| Recurring | Level 3 | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3
|
25
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 3 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
7
|
509
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Total assets |
|
509
|
|
| Recurring | Level 3 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
$ 1
|
469
|
|
| Total assets |
|
$ 469
|
|