Fair Value Measurements - Recurring Fair Value (Details) - USD ($)
$ in Millions |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
$ 108,856
|
$ 50,364
|
|
| Trading account assets |
198,854
|
229,826
|
|
| Derivative assets, gross |
434,600
|
344,800
|
|
| Derivative assets |
47,179
|
40,485
|
|
| Total available-for-sale debt securities |
234,491
|
245,639
|
|
| Other debt securities carried at fair value |
12,110
|
10,828
|
|
| Loans and leases |
6,681
|
8,335
|
|
| Loans held-for-sale |
1,585
|
3,709
|
|
| Other assets |
15,718
|
15,518
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
481
|
508
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
135,391
|
16,008
|
|
| Derivative liabilities, gross |
434,000
|
337,100
|
|
| Derivative liabilities |
45,526
|
38,229
|
|
| Short-term borrowings |
5,874
|
3,941
|
|
| Long-term debt |
32,200
|
34,975
|
|
| U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
116,380
|
68,528
|
|
| Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
61,849
|
122,528
|
|
| Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,260
|
4,641
|
|
| Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,009
|
1,077
|
|
| Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,491
|
15,021
|
|
| Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,711
|
3,941
|
|
| Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,774
|
17,912
|
|
| Recurring |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,649
|
1,000
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
108,856
|
50,364
|
|
| Trading account assets |
198,854
|
229,826
|
|
| Netting adjustments |
(387,371)
|
(304,262)
|
|
| Derivative assets |
47,179
|
40,485
|
|
| Total available-for-sale debt securities |
234,491
|
245,639
|
|
| Other debt securities carried at fair value |
12,110
|
10,828
|
|
| Loans and leases |
6,681
|
8,335
|
|
| Loans held-for-sale |
1,585
|
3,709
|
|
| Other assets |
15,718
|
15,518
|
|
| Total assets |
627,123
|
605,704
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
481
|
508
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
135,391
|
16,008
|
|
| Total trading account liabilities |
71,320
|
83,270
|
|
| Netting adjustment |
(388,481)
|
(298,918)
|
|
| Derivative liabilities |
45,526
|
38,229
|
|
| Short-term borrowings |
5,874
|
3,941
|
|
| Accrued expenses and other liabilities |
16,311
|
15,434
|
|
| Long-term debt |
32,200
|
34,975
|
|
| Total liabilities |
307,103
|
192,365
|
|
| Mortgage servicing rights |
$ 1,000
|
$ 1,500
|
|
| Level 3 recurring assets, as a percent of total assets |
0.35%
|
0.42%
|
|
| Level 3 recurring liabilities, as a percent of total liabilities |
0.29%
|
0.27%
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
$ 48,270
|
$ 53,674
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
9,564
|
13,422
|
|
| Recurring | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
24,176
|
26,733
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
5,436
|
5,493
|
|
| Recurring | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
67,971
|
86,455
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
42,424
|
42,294
|
|
| Recurring | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
26,991
|
28,301
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
13,896
|
22,061
|
|
| Recurring | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
21,641
|
24,324
|
|
| Recurring | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
9,805
|
10,339
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
116,380
|
68,528
|
|
| Other debt securities carried at fair value |
93
|
3
|
|
| Recurring | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
61,849
|
122,528
|
|
| Other debt securities carried at fair value |
|
3,003
|
|
| Recurring | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,260
|
4,641
|
|
| Recurring | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,009
|
1,077
|
|
| Other debt securities carried at fair value |
773
|
1,334
|
|
| Recurring | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,491
|
15,021
|
|
| Recurring | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,017
|
11,991
|
|
| Recurring | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,711
|
3,941
|
|
| Recurring | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,774
|
17,912
|
|
| Recurring | Non-U.S. and other securities |
|
|
|
| Assets |
|
|
|
| Other debt securities carried at fair value |
11,244
|
6,488
|
|
| Recurring | US Government-sponsored enterprises debt securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
22,200
|
26,700
|
|
| Recurring | Securities gegregated for compliance or deposited with clearing organizations |
|
|
|
| Assets |
|
|
|
| Trading account assets |
16,800
|
14,700
|
|
| Recurring | Commodities Investment |
|
|
|
| Assets |
|
|
|
| Trading account assets |
576
|
|
|
| Recurring | Level 1 |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,649
|
1,000
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
87,344
|
107,079
|
|
| Derivative assets, gross |
15,624
|
14,079
|
|
| Total available-for-sale debt securities |
115,266
|
67,332
|
|
| Other debt securities carried at fair value |
2,712
|
403
|
|
| Loans and leases |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
|
| Other assets |
9,898
|
11,782
|
|
| Total assets |
232,493
|
201,675
|
|
| 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 |
53,467
|
62,039
|
|
| Derivative liabilities, gross |
14,907
|
11,904
|
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
12,297
|
13,927
|
|
| Long-term debt |
0
|
0
|
|
| Total liabilities |
80,671
|
87,870
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
45,219
|
49,517
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
9,425
|
13,140
|
|
| 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 |
36,372
|
53,597
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
38,189
|
38,148
|
|
| Recurring | Level 1 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
5,753
|
3,965
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
5,853
|
10,751
|
|
| 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 |
115,266
|
67,332
|
|
| Other debt securities carried at fair value |
93
|
3
|
|
| 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
|
|
| Recurring | Level 1 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Non-U.S. and other securities |
|
|
|
| Assets |
|
|
|
| Other debt securities carried at fair value |
2,619
|
400
|
|
| 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 |
108,856
|
50,364
|
|
| Trading account assets |
108,130
|
118,966
|
|
| Derivative assets, gross |
416,175
|
328,442
|
|
| Total available-for-sale debt securities |
118,582
|
177,708
|
|
| Other debt securities carried at fair value |
9,131
|
10,126
|
|
| Loans and leases |
5,964
|
7,642
|
|
| Loans held-for-sale |
1,349
|
3,334
|
|
| Other assets |
3,850
|
1,376
|
|
| Total assets |
772,037
|
697,958
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
481
|
508
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
135,391
|
16,008
|
|
| Total trading account liabilities |
17,837
|
21,214
|
|
| Derivative liabilities, gross |
412,881
|
320,479
|
|
| Short-term borrowings |
5,874
|
3,941
|
|
| Accrued expenses and other liabilities |
4,014
|
1,507
|
|
| Long-term debt |
31,036
|
33,826
|
|
| Total liabilities |
607,514
|
397,483
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
3,051
|
4,157
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
139
|
282
|
|
| Recurring | Level 2 | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
22,817
|
25,226
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
5,420
|
5,478
|
|
| Recurring | Level 2 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
31,372
|
32,619
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
4,235
|
4,144
|
|
| Recurring | Level 2 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
20,884
|
23,854
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
8,043
|
11,310
|
|
| Recurring | Level 2 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
21,566
|
24,324
|
|
| Recurring | Level 2 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
8,440
|
8,786
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,114
|
1,196
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 2 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
61,849
|
122,528
|
|
| Other debt securities carried at fair value |
|
3,003
|
|
| Recurring | Level 2 | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
5,260
|
4,641
|
|
| Recurring | Level 2 | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
631
|
653
|
|
| Other debt securities carried at fair value |
506
|
1,035
|
|
| Recurring | Level 2 | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,491
|
15,021
|
|
| Recurring | Level 2 | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
13,999
|
11,989
|
|
| Recurring | Level 2 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
2,640
|
3,876
|
|
| Recurring | Level 2 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,598
|
17,804
|
|
| Recurring | Level 2 | Non-U.S. and other securities |
|
|
|
| Assets |
|
|
|
| Other debt securities carried at fair value |
8,625
|
6,088
|
|
| 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 |
3,380
|
3,781
|
|
| Derivative assets, gross |
2,751
|
2,226
|
$ 3,500
|
| Total available-for-sale debt securities |
643
|
599
|
|
| Other debt securities carried at fair value |
267
|
299
|
|
| Loans and leases |
717
|
693
|
|
| Loans held-for-sale |
236
|
375
|
|
| Other assets |
1,970
|
2,360
|
|
| Total assets |
9,964
|
10,333
|
|
| 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 |
16
|
17
|
|
| Derivative liabilities, gross |
6,219
|
4,764
|
$ 4,400
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
0
|
0
|
|
| Long-term debt |
1,164
|
1,149
|
|
| Total liabilities |
7,399
|
5,930
|
|
| Mortgage servicing rights |
1,033
|
1,545
|
|
| 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 |
1,359
|
1,507
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
16
|
15
|
|
| Recurring | Level 3 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
227
|
239
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
2
|
|
| Recurring | Level 3 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
354
|
482
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
75
|
0
|
|
| Recurring | Level 3 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
1,365
|
1,553
|
|
| 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
|
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 |
378
|
424
|
|
| Other debt securities carried at fair value |
267
|
299
|
|
| 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 |
18
|
2
|
|
| Recurring | Level 3 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
71
|
65
|
|
| Recurring | Level 3 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
176
|
108
|
|
| Recurring | Level 3 | Non-U.S. and other securities |
|
|
|
| Assets |
|
|
|
| Other debt securities carried at fair value |
$ 0
|
$ 0
|
|