Fair Value Measurements - Recurring Fair Value (Details) - USD ($)
$ in Millions |
Mar. 31, 2019 |
Dec. 31, 2018 |
Mar. 31, 2018 |
| Assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
$ 59,557
|
$ 56,399
|
|
| Trading account assets |
239,062
|
214,348
|
|
| Derivative assets, gross |
328,200
|
328,800
|
|
| Derivative assets |
42,391
|
43,725
|
|
| Total available-for-sale debt securities |
231,613
|
229,366
|
|
| Other debt securities carried at fair value |
10,343
|
8,735
|
|
| Loans and leases |
6,187
|
4,349
|
|
| Loans held-for-sale |
2,547
|
2,942
|
|
| Other assets, primarily auction rate securities |
22,929
|
19,739
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
499
|
492
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
26,609
|
28,875
|
|
| Derivative liabilities, gross |
318,200
|
317,800
|
|
| Derivative liabilities |
36,338
|
37,891
|
|
| Short-term borrowings |
1,895
|
1,648
|
|
| Long-term debt |
31,625
|
27,689
|
|
| U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
61,024
|
54,923
|
|
| Other debt securities carried at fair value |
0
|
1,282
|
|
| Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
117,165
|
121,826
|
|
| Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,379
|
5,530
|
|
| Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,015
|
1,917
|
|
| Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,369
|
14,078
|
|
| Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,433
|
4,410
|
|
| Other debt securities carried at fair value |
3
|
3
|
|
| Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
17,466
|
17,376
|
|
| Recurring |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,180
|
1,214
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
59,557
|
56,399
|
|
| Trading account assets |
239,062
|
214,348
|
|
| Netting adjustments |
(285,760)
|
(285,121)
|
|
| Derivative assets |
42,391
|
43,725
|
|
| Total available-for-sale debt securities |
231,613
|
229,366
|
|
| Other debt securities carried at fair value |
10,343
|
8,735
|
|
| Loans and leases |
6,187
|
4,349
|
|
| Loans held-for-sale |
2,547
|
2,942
|
|
| Other assets, primarily auction rate securities |
22,929
|
19,739
|
|
| Total assets |
615,809
|
580,817
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
499
|
492
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
26,609
|
28,875
|
|
| Total trading account liabilities |
84,410
|
68,220
|
|
| Netting adjustment |
(281,927)
|
(279,882)
|
|
| Derivative liabilities |
36,338
|
37,891
|
|
| Short-term borrowings |
1,895
|
1,648
|
|
| Accrued expenses and other liabilities |
23,373
|
20,075
|
|
| Long-term debt |
31,625
|
27,689
|
|
| Total liabilities |
204,749
|
184,890
|
|
| Mortgage servicing rights |
$ 1,900
|
$ 2,000
|
|
| Level 3 recurring assets, as a percent of total assets |
0.49%
|
0.51%
|
|
| Level 3 recurring liabilities, as a percent of total liabilities |
0.26%
|
0.25%
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
$ 42,354
|
$ 54,724
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
12,149
|
8,655
|
|
| Recurring | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
29,682
|
26,188
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
6,628
|
5,122
|
|
| Recurring | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
99,378
|
77,279
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
40,193
|
37,809
|
|
| Recurring | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
33,010
|
25,493
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
25,440
|
16,634
|
|
| Recurring | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
23,539
|
19,586
|
|
| Recurring | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
11,099
|
11,078
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
61,024
|
54,923
|
|
| Other debt securities carried at fair value |
|
1,282
|
|
| Recurring | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
117,165
|
121,826
|
|
| Other debt securities carried at fair value |
1,013
|
|
|
| Recurring | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,379
|
5,530
|
|
| Recurring | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,015
|
1,917
|
|
| Other debt securities carried at fair value |
1,638
|
1,606
|
|
| Recurring | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,369
|
14,078
|
|
| Recurring | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
10,762
|
9,306
|
|
| Other debt securities carried at fair value |
7,689
|
5,844
|
|
| Recurring | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,433
|
4,410
|
|
| Other debt securities carried at fair value |
3
|
3
|
|
| Recurring | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
17,466
|
17,376
|
|
| Recurring | US Government-sponsored enterprises debt securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
24,000
|
20,200
|
|
| Recurring | Securities gegregated for compliance or deposited with clearing organizations |
|
|
|
| Assets |
|
|
|
| Trading account assets |
15,700
|
16,600
|
|
| Recurring | Level 1 |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,180
|
1,214
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
113,894
|
112,789
|
|
| Derivative assets, gross |
12,581
|
9,967
|
|
| Total available-for-sale debt securities |
59,800
|
53,663
|
|
| Other debt securities carried at fair value |
3,369
|
1,772
|
|
| Loans and leases |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
|
| Other assets, primarily auction rate securities |
17,784
|
15,032
|
|
| Total assets |
208,608
|
194,437
|
|
| 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 |
64,783
|
49,085
|
|
| Derivative liabilities, gross |
11,907
|
9,931
|
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
20,821
|
18,096
|
|
| Long-term debt |
0
|
0
|
|
| Total liabilities |
97,511
|
77,112
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
41,904
|
53,131
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
11,539
|
7,894
|
|
| 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 |
63,520
|
53,840
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
37,038
|
33,739
|
|
| Recurring | Level 1 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
8,470
|
5,818
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
16,206
|
7,452
|
|
| 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 |
59,800
|
53,663
|
|
| Other debt securities carried at fair value |
|
1,282
|
|
| Recurring | Level 1 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
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 |
0
|
0
|
|
| Other debt securities carried at fair value |
3,369
|
490
|
|
| 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 |
59,557
|
56,399
|
|
| Trading account assets |
121,470
|
97,625
|
|
| Derivative assets, gross |
312,097
|
315,413
|
|
| Total available-for-sale debt securities |
171,227
|
175,097
|
|
| Other debt securities carried at fair value |
6,750
|
6,791
|
|
| Loans and leases |
5,870
|
4,011
|
|
| Loans held-for-sale |
1,989
|
2,400
|
|
| Other assets, primarily auction rate securities |
2,396
|
1,775
|
|
| Total assets |
681,356
|
659,511
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
499
|
492
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
26,609
|
28,875
|
|
| Total trading account liabilities |
19,606
|
19,117
|
|
| Derivative liabilities, gross |
301,867
|
303,441
|
|
| Short-term borrowings |
1,895
|
1,648
|
|
| Accrued expenses and other liabilities |
2,552
|
1,979
|
|
| Long-term debt |
30,735
|
26,872
|
|
| Total liabilities |
383,763
|
382,424
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
450
|
1,593
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
610
|
761
|
|
| Recurring | Level 2 | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
28,254
|
24,630
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
6,607
|
5,104
|
|
| Recurring | Level 2 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
35,570
|
23,163
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
3,155
|
4,070
|
|
| Recurring | Level 2 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
24,068
|
19,210
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
9,234
|
9,182
|
|
| Recurring | Level 2 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
23,539
|
19,586
|
|
| Recurring | Level 2 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
9,589
|
9,443
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,224
|
1,260
|
|
| Other debt securities carried at fair value |
|
0
|
|
| Recurring | Level 2 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
117,165
|
121,826
|
|
| Other debt securities carried at fair value |
1,013
|
|
|
| Recurring | Level 2 | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,379
|
5,530
|
|
| Recurring | Level 2 | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,434
|
1,320
|
|
| Other debt securities carried at fair value |
1,414
|
1,434
|
|
| Recurring | Level 2 | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,369
|
14,078
|
|
| Recurring | Level 2 | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
10,760
|
9,304
|
|
| Other debt securities carried at fair value |
4,320
|
5,354
|
|
| Recurring | Level 2 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,430
|
4,403
|
|
| Other debt securities carried at fair value |
3
|
3
|
|
| Recurring | Level 2 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
17,466
|
17,376
|
|
| 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 |
3,698
|
3,934
|
|
| Derivative assets, gross |
3,473
|
3,466
|
$ 4,500
|
| Total available-for-sale debt securities |
586
|
606
|
|
| Other debt securities carried at fair value |
224
|
172
|
|
| Loans and leases |
317
|
338
|
|
| Loans held-for-sale |
558
|
542
|
|
| Other assets, primarily auction rate securities |
2,749
|
2,932
|
|
| Total assets |
11,605
|
11,990
|
|
| 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 |
21
|
18
|
|
| Derivative liabilities, gross |
4,491
|
4,401
|
$ 5,700
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
0
|
0
|
|
| Long-term debt |
890
|
817
|
|
| Total liabilities |
5,402
|
5,236
|
|
| Mortgage servicing rights |
1,871
|
2,042
|
|
| 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 |
1,428
|
1,558
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
21
|
18
|
|
| Recurring | Level 3 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
288
|
276
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
472
|
465
|
|
| 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 |
1,510
|
1,635
|
|
| Recurring | Level 3 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
|
0
|
|
| Recurring | Level 3 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
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 |
581
|
597
|
|
| Other debt securities carried at fair value |
224
|
172
|
|
| 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 |
2
|
2
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 3 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3
|
7
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 3 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
$ 0
|
$ 0
|
|