Fair Value Measurements - Recurring Fair Value (Details) - USD ($)
$ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
| Assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
$ 50,298
|
$ 56,399
|
|
| Trading account assets |
263,684
|
214,348
|
|
| Derivative assets, gross |
391,400
|
328,800
|
|
| Derivative assets |
45,123
|
43,725
|
|
| Total available-for-sale debt securities |
244,872
|
229,366
|
|
| Other debt securities carried at fair value |
9,470
|
8,735
|
|
| Loans and leases |
7,674
|
4,349
|
|
| Loans held-for-sale |
5,011
|
2,942
|
|
| Other assets |
22,952
|
19,739
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
626
|
492
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
21,963
|
28,875
|
|
| Derivative liabilities, gross |
380,500
|
317,800
|
|
| Derivative liabilities |
38,025
|
37,891
|
|
| Short-term borrowings |
3,458
|
1,648
|
|
| Long-term debt |
36,773
|
27,689
|
|
| U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
56,947
|
54,923
|
|
| Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
134,949
|
121,826
|
|
| Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
4,962
|
5,530
|
|
| Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,943
|
1,917
|
|
| Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,677
|
14,078
|
|
| Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,883
|
4,410
|
|
| Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,432
|
17,376
|
|
| Recurring |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,356
|
1,214
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
50,298
|
56,399
|
|
| Trading account assets |
263,684
|
214,348
|
|
| Netting adjustments |
(346,331)
|
(285,121)
|
|
| Derivative assets |
45,123
|
43,725
|
|
| Total available-for-sale debt securities |
244,872
|
229,366
|
|
| Other debt securities carried at fair value |
9,470
|
8,735
|
|
| Loans and leases |
7,674
|
4,349
|
|
| Loans held-for-sale |
5,011
|
2,942
|
|
| Other assets |
22,952
|
19,739
|
|
| Total assets |
650,440
|
580,817
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
626
|
492
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
21,963
|
28,875
|
|
| Total trading account liabilities |
78,642
|
68,220
|
|
| Netting adjustment |
(342,503)
|
(279,882)
|
|
| Derivative liabilities |
38,025
|
37,891
|
|
| Short-term borrowings |
3,458
|
1,648
|
|
| Accrued expenses and other liabilities |
23,512
|
20,075
|
|
| Long-term debt |
36,773
|
27,689
|
|
| Total liabilities |
202,999
|
184,890
|
|
| Mortgage servicing rights |
$ 1,600
|
$ 2,000
|
|
| Level 3 recurring assets, as a percent of total assets |
0.46%
|
0.51%
|
|
| Level 3 recurring liabilities, as a percent of total liabilities |
0.25%
|
0.25%
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
$ 48,055
|
$ 54,724
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
14,143
|
8,655
|
|
| Recurring | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
31,216
|
26,188
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
7,400
|
5,122
|
|
| Recurring | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
109,924
|
77,279
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
38,093
|
37,809
|
|
| Recurring | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
39,256
|
25,493
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
19,006
|
16,634
|
|
| Recurring | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
25,268
|
19,586
|
|
| Recurring | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
9,965
|
11,078
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
56,947
|
54,923
|
|
| Other debt securities carried at fair value |
3
|
1,282
|
|
| Recurring | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
134,949
|
121,826
|
|
| Recurring | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
4,962
|
5,530
|
|
| Recurring | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,943
|
1,917
|
|
| Other debt securities carried at fair value |
1,543
|
1,606
|
|
| Recurring | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,677
|
14,078
|
|
| Other debt securities carried at fair value |
13
|
|
|
| Recurring | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
11,079
|
9,306
|
|
| Other debt securities carried at fair value |
7,908
|
5,844
|
|
| Recurring | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,883
|
4,410
|
|
| Other debt securities carried at fair value |
3
|
3
|
|
| Recurring | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,432
|
17,376
|
|
| Recurring | US Government-sponsored enterprises debt securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
25,800
|
20,200
|
|
| Recurring | Securities gegregated for compliance or deposited with clearing organizations |
|
|
|
| Assets |
|
|
|
| Trading account assets |
14,900
|
16,600
|
|
| Recurring | Level 1 |
|
|
|
| Assets |
|
|
|
| Time deposits placed and other short-term investments |
1,356
|
1,214
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
135,479
|
112,789
|
|
| Derivative assets, gross |
15,501
|
9,967
|
|
| Total available-for-sale debt securities |
55,704
|
53,663
|
|
| Other debt securities carried at fair value |
2,534
|
1,772
|
|
| Loans and leases |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
|
| Other assets |
18,471
|
15,032
|
|
| Total assets |
229,045
|
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 |
58,104
|
49,085
|
|
| Derivative liabilities, gross |
14,741
|
9,931
|
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
21,210
|
18,096
|
|
| Long-term debt |
0
|
0
|
|
| Total liabilities |
94,055
|
77,112
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
46,103
|
53,131
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
13,948
|
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 |
77,822
|
53,840
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
34,161
|
33,739
|
|
| Recurring | Level 1 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
11,554
|
5,818
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
9,995
|
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 |
55,704
|
53,663
|
|
| Other debt securities carried at fair value |
3
|
1,282
|
|
| 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 |
0
|
0
|
|
| Other debt securities carried at fair value |
2,531
|
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 |
50,298
|
56,399
|
|
| Trading account assets |
124,307
|
97,625
|
|
| Derivative assets, gross |
372,583
|
315,413
|
|
| Total available-for-sale debt securities |
188,655
|
175,097
|
|
| Other debt securities carried at fair value |
6,628
|
6,791
|
|
| Loans and leases |
7,273
|
4,011
|
|
| Loans held-for-sale |
4,625
|
2,400
|
|
| Other assets |
2,081
|
1,775
|
|
| Total assets |
756,450
|
659,511
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
626
|
492
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
21,963
|
28,875
|
|
| Total trading account liabilities |
20,523
|
19,117
|
|
| Derivative liabilities, gross |
361,185
|
303,441
|
|
| Short-term borrowings |
3,458
|
1,648
|
|
| Accrued expenses and other liabilities |
2,302
|
1,979
|
|
| Long-term debt |
35,909
|
26,872
|
|
| Total liabilities |
445,966
|
382,424
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
1,952
|
1,593
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
195
|
761
|
|
| Recurring | Level 2 | Corporate securities, trading loans and other |
|
|
|
| Assets |
|
|
|
| Trading account assets |
29,625
|
24,630
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
7,387
|
5,104
|
|
| Recurring | Level 2 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
31,823
|
23,163
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
3,930
|
4,070
|
|
| Recurring | Level 2 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
27,237
|
19,210
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
9,011
|
9,182
|
|
| Recurring | Level 2 | U.S. government-sponsored agency guaranteed |
|
|
|
| Assets |
|
|
|
| Trading account assets |
25,268
|
19,586
|
|
| Recurring | Level 2 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Assets |
|
|
|
| Trading account assets |
8,402
|
9,443
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,243
|
1,260
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 2 | Agency |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
134,949
|
121,826
|
|
| Recurring | Level 2 | Agency-collateralized mortgage obligations |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
4,962
|
5,530
|
|
| Recurring | Level 2 | Non-agency residential |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
1,435
|
1,320
|
|
| Other debt securities carried at fair value |
1,235
|
1,434
|
|
| Recurring | Level 2 | Commercial |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
14,677
|
14,078
|
|
| Other debt securities carried at fair value |
13
|
|
|
| Recurring | Level 2 | Non-U.S. securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
11,077
|
9,304
|
|
| Other debt securities carried at fair value |
5,377
|
5,354
|
|
| Recurring | Level 2 | Other taxable securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
3,880
|
4,403
|
|
| Other debt securities carried at fair value |
3
|
3
|
|
| Recurring | Level 2 | Tax-exempt securities |
|
|
|
| Assets |
|
|
|
| Total available-for-sale debt securities |
16,432
|
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 |
3,898
|
3,934
|
|
| Derivative assets, gross |
3,370
|
3,466
|
$ 4,400
|
| Total available-for-sale debt securities |
513
|
606
|
|
| Other debt securities carried at fair value |
308
|
172
|
|
| Loans and leases |
401
|
338
|
|
| Loans held-for-sale |
386
|
542
|
|
| Other assets |
2,400
|
2,932
|
|
| Total assets |
11,276
|
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 |
15
|
18
|
|
| Derivative liabilities, gross |
4,602
|
4,401
|
$ 5,000
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
0
|
0
|
|
| Long-term debt |
864
|
817
|
|
| Total liabilities |
5,481
|
5,236
|
|
| Mortgage servicing rights |
1,556
|
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 |
1,591
|
1,558
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
13
|
18
|
|
| Recurring | Level 3 | Equity securities |
|
|
|
| Assets |
|
|
|
| Trading account assets |
279
|
276
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
2
|
0
|
|
| Recurring | Level 3 | Non-U.S. sovereign debt |
|
|
|
| Assets |
|
|
|
| Trading account assets |
465
|
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 |
1,563
|
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
|
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 |
508
|
597
|
|
| Other debt securities carried at fair value |
308
|
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
|
|