Fair Value Measurements - Recurring Fair Value (Details) - USD ($) $ in Millions |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Assets |
|
|
|
Federal funds sold and securities borrowed or purchased under agreements to resell |
$ 56,399
|
$ 52,906
|
|
Trading account assets |
214,348
|
209,358
|
|
Derivative assets, gross |
328,800
|
351,600
|
|
Derivative assets |
43,725
|
37,762
|
|
Total available-for-sale debt securities |
229,366
|
302,631
|
|
Other debt securities carried at fair value |
8,735
|
12,486
|
|
Loans and leases |
4,349
|
5,710
|
|
Loans held-for-sale |
2,942
|
2,156
|
|
Other assets |
19,739
|
22,581
|
|
Liabilities |
|
|
|
Interest-bearing deposits in U.S. offices |
492
|
449
|
|
Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
28,875
|
36,182
|
|
Derivative liabilities, gross |
317,800
|
346,000
|
|
Derivative liabilities |
37,891
|
34,300
|
|
Short-term borrowings |
1,648
|
1,494
|
|
Long-term debt |
27,637
|
31,786
|
|
U.S. Treasury and agency securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
54,923
|
53,523
|
|
Other debt securities carried at fair value |
1,282
|
0
|
|
Agency |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
121,826
|
192,929
|
|
Agency-collateralized mortgage obligations |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
5,530
|
6,804
|
|
Non-agency residential |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
1,917
|
2,669
|
|
Commercial |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
14,078
|
13,684
|
|
Other taxable securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
4,410
|
5,770
|
|
Other debt securities carried at fair value |
3
|
229
|
|
Tax-exempt securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
17,376
|
20,575
|
|
Recurring |
|
|
|
Assets |
|
|
|
Time deposits placed and other short-term investments |
1,214
|
2,234
|
|
Federal funds sold and securities borrowed or purchased under agreements to resell |
56,399
|
52,906
|
|
Trading account assets |
214,348
|
209,358
|
|
Netting adjustments |
(285,121)
|
(313,788)
|
|
Derivative assets |
43,725
|
37,762
|
|
Total available-for-sale debt securities |
229,366
|
302,631
|
|
Other debt securities carried at fair value |
8,735
|
12,486
|
|
Loans and leases |
4,349
|
5,710
|
|
Loans held-for-sale |
2,942
|
2,156
|
|
Other assets |
19,739
|
22,581
|
|
Total assets |
580,817
|
647,824
|
|
Liabilities |
|
|
|
Interest-bearing deposits in U.S. offices |
492
|
449
|
|
Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
28,875
|
36,182
|
|
Total trading account liabilities |
68,220
|
81,187
|
|
Netting adjustment |
(279,882)
|
(311,771)
|
|
Derivative liabilities |
37,891
|
34,300
|
|
Short-term borrowings |
1,648
|
1,494
|
|
Accrued expenses and other liabilities |
20,075
|
22,840
|
|
Long-term debt |
27,637
|
31,786
|
|
Total liabilities |
184,838
|
208,238
|
|
Mortgage servicing rights |
$ 2,000
|
$ 2,300
|
|
Level 3 recurring assets, as a percent of total assets |
0.51%
|
0.57%
|
|
Level 3 recurring liabilities, as a percent of total liabilities |
0.25%
|
0.38%
|
|
Recurring | U.S. Treasury and agency securities |
|
|
|
Assets |
|
|
|
Trading account assets |
$ 54,724
|
$ 40,642
|
|
Liabilities |
|
|
|
Total trading account liabilities |
8,655
|
18,000
|
|
Recurring | Corporate securities, trading loans and other |
|
|
|
Assets |
|
|
|
Trading account assets |
26,188
|
30,578
|
|
Liabilities |
|
|
|
Total trading account liabilities |
5,122
|
6,925
|
|
Recurring | Equity securities |
|
|
|
Assets |
|
|
|
Trading account assets |
77,279
|
84,940
|
|
Liabilities |
|
|
|
Total trading account liabilities |
37,809
|
36,904
|
|
Recurring | Non-U.S. sovereign debt |
|
|
|
Assets |
|
|
|
Trading account assets |
25,493
|
22,940
|
|
Liabilities |
|
|
|
Total trading account liabilities |
16,634
|
19,358
|
|
Recurring | U.S. government-sponsored agency guaranteed |
|
|
|
Assets |
|
|
|
Trading account assets |
19,586
|
20,586
|
|
Recurring | Mortgage trading loans, ABS and other MBS |
|
|
|
Assets |
|
|
|
Trading account assets |
11,078
|
9,672
|
|
Recurring | U.S. Treasury and agency securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
54,923
|
53,523
|
|
Other debt securities carried at fair value |
1,282
|
|
|
Recurring | Agency |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
121,826
|
192,929
|
|
Recurring | Agency-collateralized mortgage obligations |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
5,530
|
6,804
|
|
Recurring | Non-agency residential |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
1,917
|
2,669
|
|
Other debt securities carried at fair value |
1,606
|
2,769
|
|
Recurring | Commercial |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
14,078
|
13,684
|
|
Recurring | Non-U.S. securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
9,306
|
6,677
|
|
Other debt securities carried at fair value |
5,844
|
9,488
|
|
Recurring | Other taxable securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
4,410
|
5,770
|
|
Other debt securities carried at fair value |
3
|
229
|
|
Recurring | Tax-exempt securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
17,376
|
20,575
|
|
Recurring | US Government-sponsored enterprises debt securities |
|
|
|
Assets |
|
|
|
Trading account assets |
20,200
|
21,300
|
|
Recurring | Securities gegregated for compliance or deposited with clearing organizations |
|
|
|
Assets |
|
|
|
Trading account assets |
16,600
|
16,800
|
|
Recurring | Level 1 |
|
|
|
Assets |
|
|
|
Time deposits placed and other short-term investments |
1,214
|
2,234
|
|
Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
Trading account assets |
112,789
|
106,012
|
|
Derivative assets, gross |
9,967
|
6,305
|
|
Total available-for-sale debt securities |
53,663
|
52,687
|
|
Other debt securities carried at fair value |
1,772
|
8,191
|
|
Loans and leases |
0
|
0
|
|
Loans held-for-sale |
0
|
0
|
|
Other assets |
15,032
|
19,367
|
|
Total assets |
194,437
|
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 |
49,085
|
62,261
|
|
Derivative liabilities, gross |
9,931
|
6,029
|
|
Short-term borrowings |
0
|
0
|
|
Accrued expenses and other liabilities |
18,096
|
21,887
|
|
Long-term debt |
0
|
0
|
|
Total liabilities |
77,112
|
90,177
|
|
Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
Assets |
|
|
|
Trading account assets |
53,131
|
38,720
|
|
Liabilities |
|
|
|
Total trading account liabilities |
7,894
|
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 |
53,840
|
60,747
|
|
Liabilities |
|
|
|
Total trading account liabilities |
33,739
|
33,019
|
|
Recurring | Level 1 | Non-U.S. sovereign debt |
|
|
|
Assets |
|
|
|
Trading account assets |
5,818
|
6,545
|
|
Liabilities |
|
|
|
Total trading account liabilities |
7,452
|
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 |
53,663
|
51,915
|
|
Other debt securities carried at fair value |
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
|
772
|
|
Other debt securities carried at fair value |
490
|
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 |
56,399
|
52,906
|
|
Trading account assets |
97,625
|
99,193
|
|
Derivative assets, gross |
315,413
|
341,178
|
|
Total available-for-sale debt securities |
175,097
|
248,941
|
|
Other debt securities carried at fair value |
6,791
|
4,295
|
|
Loans and leases |
4,011
|
5,139
|
|
Loans held-for-sale |
2,400
|
1,466
|
|
Other assets |
1,775
|
789
|
|
Total assets |
659,511
|
753,907
|
|
Liabilities |
|
|
|
Interest-bearing deposits in U.S. offices |
492
|
449
|
|
Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
28,875
|
36,182
|
|
Total trading account liabilities |
19,117
|
18,902
|
|
Derivative liabilities, gross |
303,441
|
334,261
|
|
Short-term borrowings |
1,648
|
1,494
|
|
Accrued expenses and other liabilities |
1,979
|
945
|
|
Long-term debt |
26,820
|
29,923
|
|
Total liabilities |
382,372
|
422,156
|
|
Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
Assets |
|
|
|
Trading account assets |
1,593
|
1,922
|
|
Liabilities |
|
|
|
Total trading account liabilities |
761
|
734
|
|
Recurring | Level 2 | Corporate securities, trading loans and other |
|
|
|
Assets |
|
|
|
Trading account assets |
24,630
|
28,714
|
|
Liabilities |
|
|
|
Total trading account liabilities |
5,104
|
6,901
|
|
Recurring | Level 2 | Equity securities |
|
|
|
Assets |
|
|
|
Trading account assets |
23,163
|
23,958
|
|
Liabilities |
|
|
|
Total trading account liabilities |
4,070
|
3,885
|
|
Recurring | Level 2 | Non-U.S. sovereign debt |
|
|
|
Assets |
|
|
|
Trading account assets |
19,210
|
15,839
|
|
Liabilities |
|
|
|
Total trading account liabilities |
9,182
|
7,382
|
|
Recurring | Level 2 | U.S. government-sponsored agency guaranteed |
|
|
|
Assets |
|
|
|
Trading account assets |
19,586
|
20,586
|
|
Recurring | Level 2 | Mortgage trading loans, ABS and other MBS |
|
|
|
Assets |
|
|
|
Trading account assets |
9,443
|
8,174
|
|
Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
1,260
|
1,608
|
|
Other debt securities carried at fair value |
0
|
|
|
Recurring | Level 2 | Agency |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
121,826
|
192,929
|
|
Recurring | Level 2 | Agency-collateralized mortgage obligations |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
5,530
|
6,804
|
|
Recurring | Level 2 | Non-agency residential |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
1,320
|
2,669
|
|
Other debt securities carried at fair value |
1,434
|
2,769
|
|
Recurring | Level 2 | Commercial |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
14,078
|
13,684
|
|
Recurring | Level 2 | Non-U.S. securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
9,304
|
5,880
|
|
Other debt securities carried at fair value |
5,354
|
1,297
|
|
Recurring | Level 2 | Other taxable securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
4,403
|
5,261
|
|
Other debt securities carried at fair value |
3
|
229
|
|
Recurring | Level 2 | Tax-exempt securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
17,376
|
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 |
3,934
|
4,153
|
|
Derivative assets, gross |
3,466
|
4,067
|
$ 3,900
|
Total available-for-sale debt securities |
606
|
1,003
|
|
Other debt securities carried at fair value |
172
|
0
|
|
Loans and leases |
338
|
571
|
|
Loans held-for-sale |
542
|
690
|
|
Other assets |
2,932
|
2,425
|
|
Total assets |
11,990
|
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 |
18
|
24
|
|
Derivative liabilities, gross |
4,401
|
5,781
|
$ 5,200
|
Short-term borrowings |
0
|
0
|
|
Accrued expenses and other liabilities |
0
|
8
|
|
Long-term debt |
817
|
1,863
|
|
Total liabilities |
5,236
|
7,676
|
|
Mortgage servicing rights |
2,042
|
2,302
|
|
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 |
1,558
|
1,864
|
|
Liabilities |
|
|
|
Total trading account liabilities |
18
|
24
|
|
Recurring | Level 3 | Equity securities |
|
|
|
Assets |
|
|
|
Trading account assets |
276
|
235
|
|
Liabilities |
|
|
|
Total trading account liabilities |
0
|
0
|
|
Recurring | Level 3 | Non-U.S. sovereign debt |
|
|
|
Assets |
|
|
|
Trading account assets |
465
|
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 |
1,635
|
1,498
|
|
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
|
|
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 |
597
|
0
|
|
Other debt securities carried at fair value |
172
|
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 |
2
|
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
|
|
Recurring | Level 3 | Tax-exempt securities |
|
|
|
Assets |
|
|
|
Total available-for-sale debt securities |
$ 0
|
$ 469
|
|