Fair Value Measurements - Recurring Fair Value (Details) - USD ($)
$ in Millions |
Mar. 31, 2018 |
Dec. 31, 2017 |
Mar. 31, 2017 |
| Financial assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
$ 68,556
|
$ 52,906
|
|
| Trading account assets |
198,477
|
209,358
|
|
| Derivative assets, gross |
360,400
|
351,600
|
|
| Derivative assets |
47,869
|
37,762
|
|
| Total available-for-sale debt securities |
290,360
|
302,631
|
|
| Other debt securities carried at fair value |
12,938
|
12,486
|
|
| Loans and leases |
5,989
|
5,710
|
|
| Loans held-for-sale |
3,091
|
2,156
|
|
| Other assets |
20,575
|
22,581
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
435
|
449
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
35,116
|
36,182
|
|
| Gross Derivative Liabilities |
340,900
|
346,000
|
|
| Derivative liabilities |
33,900
|
34,300
|
|
| Short-term borrowings |
2,284
|
1,494
|
|
| Long-term debt |
30,062
|
31,786
|
|
| Derivative liabilities |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Liabilities transferred from Level 2 to Level 1 |
188
|
608
|
|
| Liabilities transferred from Level 1 to Level 2 |
663
|
3,000
|
|
| Derivative assets |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Assets transferred from Level 2 to Level 1 |
364
|
758
|
|
| Assets transferred from Level 1 to Level 2 |
916
|
4,200
|
|
| U.S. Treasury and agency securities | Trading Securities |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Assets transferred from Level 1 to Level 2 |
|
1,100
|
|
| Equity securities | Trading Securities |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Liabilities transferred from Level 2 to Level 1 |
|
4,300
|
|
| Liabilities transferred from Level 1 to Level 2 |
|
3,100
|
|
| Equity securities | Trading Securities |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Assets transferred from Level 2 to Level 1 |
|
14,100
|
|
| Assets transferred from Level 1 to Level 2 |
|
5,300
|
|
| Non-U.S. sovereign debt | Trading Securities |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Liabilities transferred from Level 1 to Level 2 |
|
1,500
|
|
| Non-U.S. sovereign debt | Trading Securities |
|
|
|
| Assets and Liabilities, Recurring Basis, Supplemental Information: |
|
|
|
| Assets transferred from Level 1 to Level 2 |
|
3,300
|
|
| U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
52,972
|
53,523
|
|
| Agency |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
184,111
|
192,929
|
|
| Agency-collateralized mortgage obligations |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
6,398
|
6,804
|
|
| Other debt securities carried at fair value |
0
|
5
|
|
| Non-agency residential |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
2,604
|
2,669
|
|
| Other debt securities carried at fair value |
2,736
|
2,764
|
|
| Commercial |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
13,559
|
13,684
|
|
| Other taxable securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
4,714
|
5,770
|
|
| Other debt securities carried at fair value |
226
|
229
|
|
| Tax-exempt securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
19,077
|
20,575
|
|
| Recurring |
|
|
|
| Financial assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
68,556
|
52,906
|
|
| Trading account assets |
198,477
|
209,358
|
|
| Netting adjustments |
(312,489)
|
(313,788)
|
|
| Derivative assets |
47,869
|
37,762
|
|
| Total available-for-sale debt securities |
290,360
|
302,631
|
|
| Other debt securities carried at fair value |
12,938
|
12,486
|
|
| Loans and leases |
5,989
|
5,710
|
|
| Loans held-for-sale |
3,091
|
2,156
|
|
| Other assets |
20,575
|
22,581
|
|
| Total assets |
647,855
|
645,590
|
|
| Mortgage servicing rights |
2,300
|
2,300
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
435
|
449
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
35,116
|
36,182
|
|
| Total trading account liabilities |
100,218
|
81,187
|
|
| Netting adjustment |
(306,989)
|
(311,771)
|
|
| Derivative liabilities |
33,900
|
34,300
|
|
| Short-term borrowings |
2,284
|
1,494
|
|
| Accrued expenses and other liabilities |
20,176
|
22,840
|
|
| Long-term debt |
30,062
|
31,786
|
|
| Total liabilities |
222,191
|
208,238
|
|
| Recurring | Securities Segregated for Compliance or Deposited with Clearing Organizations |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
16,400
|
16,800
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
37,692
|
40,642
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
15,498
|
18,000
|
|
| Recurring | Corporate securities, trading loans and other |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
33,272
|
30,578
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
7,935
|
6,925
|
|
| Recurring | Equity securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
65,885
|
84,940
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
48,495
|
36,904
|
|
| Recurring | Non-U.S. sovereign debt |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
33,241
|
22,940
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
28,290
|
19,358
|
|
| Recurring | U.S. government-sponsored agency guaranteed |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
18,380
|
20,586
|
|
| Recurring | Mortgage trading loans, ABS and other MBS |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
10,007
|
9,672
|
|
| Recurring | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
52,972
|
53,523
|
|
| Recurring | Agency |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
184,111
|
192,929
|
|
| Other debt securities carried at fair value |
|
5
|
|
| Recurring | Agency-collateralized mortgage obligations |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
6,398
|
6,804
|
|
| Recurring | Non-agency residential |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
2,604
|
2,669
|
|
| Other debt securities carried at fair value |
2,736
|
2,764
|
|
| Recurring | Commercial |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
13,559
|
13,684
|
|
| Recurring | Non-U.S. securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
6,925
|
6,677
|
|
| Other debt securities carried at fair value |
9,976
|
9,488
|
|
| Recurring | Other taxable securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
4,714
|
5,770
|
|
| Other debt securities carried at fair value |
226
|
229
|
|
| Recurring | Tax-exempt securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
19,077
|
20,575
|
|
| Recurring | US Government-sponsored enterprises debt securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
19,100
|
21,300
|
|
| Recurring | Level 1 |
|
|
|
| Financial assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
83,627
|
106,012
|
|
| Derivative assets, gross |
9,873
|
6,305
|
|
| Total available-for-sale debt securities |
52,163
|
52,687
|
|
| Other debt securities carried at fair value |
8,621
|
8,191
|
|
| Loans and leases |
0
|
0
|
|
| Loans held-for-sale |
0
|
0
|
|
| Other assets |
15,376
|
19,367
|
|
| Total assets |
169,660
|
192,562
|
|
| 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 |
75,849
|
62,261
|
|
| Gross Derivative Liabilities |
9,374
|
6,029
|
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
18,131
|
21,887
|
|
| Long-term debt |
0
|
0
|
|
| Total liabilities |
103,354
|
90,177
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
35,219
|
38,720
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
15,205
|
17,266
|
|
| Recurring | Level 1 | Corporate securities, trading loans and other |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 1 | Equity securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
40,949
|
60,747
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
43,434
|
33,019
|
|
| Recurring | Level 1 | Non-U.S. sovereign debt |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
7,459
|
6,545
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
17,210
|
11,976
|
|
| Recurring | Level 1 | U.S. government-sponsored agency guaranteed |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Recurring | Level 1 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Recurring | Level 1 | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
51,412
|
51,915
|
|
| Recurring | Level 1 | Agency |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
|
0
|
|
| Recurring | Level 1 | Agency-collateralized mortgage obligations |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Non-agency residential |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 1 | Commercial |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 1 | Non-U.S. securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
751
|
772
|
|
| Other debt securities carried at fair value |
8,621
|
8,191
|
|
| Recurring | Level 1 | Other taxable securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 1 | Tax-exempt securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 2 |
|
|
|
| Financial assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
68,556
|
52,906
|
|
| Trading account assets |
111,149
|
99,193
|
|
| Derivative assets, gross |
345,940
|
341,178
|
|
| Total available-for-sale debt securities |
238,131
|
248,941
|
|
| Other debt securities carried at fair value |
4,317
|
4,295
|
|
| Loans and leases |
5,463
|
5,139
|
|
| Loans held-for-sale |
2,406
|
1,466
|
|
| Other assets |
1,904
|
789
|
|
| Total assets |
777,866
|
753,907
|
|
| Liabilities |
|
|
|
| Interest-bearing deposits in U.S. offices |
435
|
449
|
|
| Federal funds purchased and securities loaned or sold under agreements to repurchase, measured at fair value |
35,116
|
36,182
|
|
| Total trading account liabilities |
24,343
|
18,902
|
|
| Gross Derivative Liabilities |
325,832
|
334,261
|
|
| Short-term borrowings |
2,284
|
1,494
|
|
| Accrued expenses and other liabilities |
2,037
|
945
|
|
| Long-term debt |
28,711
|
29,923
|
|
| Total liabilities |
418,758
|
422,156
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
2,473
|
1,922
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
293
|
734
|
|
| Recurring | Level 2 | Corporate securities, trading loans and other |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
31,556
|
28,714
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
7,909
|
6,901
|
|
| Recurring | Level 2 | Equity securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
24,724
|
23,958
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
5,061
|
3,885
|
|
| Recurring | Level 2 | Non-U.S. sovereign debt |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
25,381
|
15,839
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
11,080
|
7,382
|
|
| Recurring | Level 2 | U.S. government-sponsored agency guaranteed |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
18,380
|
20,586
|
|
| Recurring | Level 2 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
8,635
|
8,174
|
|
| Recurring | Level 2 | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
1,560
|
1,608
|
|
| Recurring | Level 2 | Agency |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
184,111
|
192,929
|
|
| Other debt securities carried at fair value |
|
5
|
|
| Recurring | Level 2 | Agency-collateralized mortgage obligations |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
6,398
|
6,804
|
|
| Recurring | Level 2 | Non-agency residential |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
2,604
|
2,669
|
|
| Other debt securities carried at fair value |
2,736
|
2,764
|
|
| Recurring | Level 2 | Commercial |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
13,559
|
13,684
|
|
| Recurring | Level 2 | Non-U.S. securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
6,151
|
5,880
|
|
| Other debt securities carried at fair value |
1,355
|
1,297
|
|
| Recurring | Level 2 | Other taxable securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
4,671
|
5,261
|
|
| Other debt securities carried at fair value |
226
|
229
|
|
| Recurring | Level 2 | Tax-exempt securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
19,077
|
20,106
|
|
| Recurring | Level 3 |
|
|
|
| Financial assets |
|
|
|
| Federal funds sold and securities borrowed or purchased under agreements to resell |
0
|
0
|
|
| Trading account assets |
3,701
|
4,153
|
|
| Derivative assets, gross |
4,545
|
4,067
|
$ 4,200
|
| Total available-for-sale debt securities |
66
|
1,003
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Loans and leases |
526
|
571
|
|
| Loans held-for-sale |
685
|
690
|
|
| Other assets |
3,295
|
2,425
|
|
| Total assets |
12,818
|
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 |
26
|
24
|
|
| Gross Derivative Liabilities |
5,683
|
5,781
|
$ 5,800
|
| Short-term borrowings |
0
|
0
|
|
| Accrued expenses and other liabilities |
8
|
8
|
|
| Long-term debt |
1,351
|
1,863
|
|
| Total liabilities |
7,068
|
7,676
|
|
| Recurring | Level 3 | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | Corporate securities, trading loans and other |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
1,716
|
1,864
|
|
| Total assets |
1,700
|
1,900
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
26
|
24
|
|
| Recurring | Level 3 | Equity securities |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
212
|
235
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | Non-U.S. sovereign debt |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
401
|
556
|
|
| Total assets |
401
|
556
|
|
| Liabilities |
|
|
|
| Total trading account liabilities |
0
|
0
|
|
| Recurring | Level 3 | U.S. government-sponsored agency guaranteed |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
0
|
0
|
|
| Recurring | Level 3 | Mortgage trading loans, ABS and other MBS |
|
|
|
| Financial assets |
|
|
|
| Trading account assets |
1,372
|
1,498
|
|
| Total assets |
1,400
|
1,500
|
|
| Recurring | Level 3 | U.S. Treasury and agency securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Agency |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
|
0
|
|
| Recurring | Level 3 | Agency-collateralized mortgage obligations |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Non-agency residential |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 3 | Commercial |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
0
|
0
|
|
| Recurring | Level 3 | Non-U.S. securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
23
|
25
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Recurring | Level 3 | Other taxable securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
43
|
509
|
|
| Other debt securities carried at fair value |
0
|
0
|
|
| Total assets |
|
509
|
|
| Recurring | Level 3 | Tax-exempt securities |
|
|
|
| Financial assets |
|
|
|
| Total available-for-sale debt securities |
$ 0
|
469
|
|
| Total assets |
|
$ 469
|
|