Loans - Wholesale Loan Portfolio, Internal Risk Ratings (Details) - USD ($) $ in Millions |
3 Months Ended |
12 Months Ended |
Mar. 31, 2024 |
Mar. 31, 2023 |
Dec. 31, 2023 |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
$ 1,264,093
|
$ 1,084,850
|
$ 1,280,870
|
Loans by origination year |
|
|
|
Total retained loans |
1,264,093
|
1,084,850
|
1,280,870
|
Gross charge-offs by origination year |
|
|
|
Total gross charge-offs |
2,381
|
1,451
|
|
Wholesale |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
$ 667,761
|
604,324
|
$ 672,472
|
% of investment-grade to total retained loans |
67.93%
|
|
68.23%
|
% of total criticized to total retained loans |
3.79%
|
|
3.51%
|
% of criticized nonaccrual to total retained loans |
0.44%
|
|
0.35%
|
Loans by origination year |
|
|
|
Total retained loans |
$ 667,761
|
604,324
|
$ 672,472
|
Gross charge-offs by origination year |
|
|
|
Total gross charge-offs |
136
|
$ 105
|
|
Wholesale | Investment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
453,592
|
|
458,838
|
Loans by origination year |
|
|
|
Total retained loans |
453,592
|
|
458,838
|
Wholesale | Total noninvestment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
214,169
|
|
213,634
|
Loans by origination year |
|
|
|
Total retained loans |
214,169
|
|
213,634
|
Wholesale | Noncriticized |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
188,850
|
|
190,056
|
Loans by origination year |
|
|
|
Total retained loans |
188,850
|
|
190,056
|
Wholesale | Criticized performing |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
22,392
|
|
21,232
|
Loans by origination year |
|
|
|
Total retained loans |
22,392
|
|
21,232
|
Wholesale | Criticized nonaccrual |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
2,927
|
|
2,346
|
Loans by origination year |
|
|
|
Total retained loans |
2,927
|
|
2,346
|
Wholesale | Secured by real estate |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
$ 163,184
|
|
$ 162,338
|
% of investment-grade to total retained loans |
72.82%
|
|
74.17%
|
% of total criticized to total retained loans |
5.53%
|
|
4.74%
|
% of criticized nonaccrual to total retained loans |
0.36%
|
|
0.25%
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
$ 2,889
|
|
$ 15,164
|
Term loans originated in 2023/2022 |
15,515
|
|
41,453
|
Term loans originated in 2022/2021 |
41,163
|
|
33,623
|
Term loans originated in 2021/2020 |
33,452
|
|
20,660
|
Term loans originated in 2020/2019 |
20,213
|
|
19,664
|
Term loans originated prior to 2020/2019 |
47,166
|
|
29,026
|
Revolving loans within the revolving period |
2,785
|
|
2,746
|
Revolving loans converted to term loans |
1
|
|
2
|
Total retained loans |
163,184
|
|
162,338
|
Gross charge-offs by origination year |
|
|
|
Gross charge-offs originated in 2024/2023 |
0
|
|
20
|
Gross charge-offs originated in 2023/2022 |
5
|
|
48
|
Gross charge-offs originated in 2022/2021 |
20
|
|
22
|
Gross charge-offs originated in 2021/2020 |
0
|
|
0
|
Gross charge-offs originated in 2020/2019 |
0
|
|
23
|
Gross charge-offs originated prior to 2020/2019 |
3
|
|
78
|
Gross charge-offs originated within the revolving period |
0
|
|
0
|
Gross charge-offs originated converted to term loans |
0
|
|
1
|
Total gross charge-offs |
28
|
|
192
|
Wholesale | Secured by real estate | Investment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
118,829
|
|
120,405
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
1,847
|
|
10,687
|
Term loans originated in 2023/2022 |
10,697
|
|
28,874
|
Term loans originated in 2022/2021 |
28,184
|
|
25,784
|
Term loans originated in 2021/2020 |
24,877
|
|
16,820
|
Term loans originated in 2020/2019 |
16,470
|
|
15,677
|
Term loans originated prior to 2020/2019 |
35,371
|
|
21,108
|
Revolving loans within the revolving period |
1,383
|
|
1,455
|
Revolving loans converted to term loans |
0
|
|
0
|
Total retained loans |
118,829
|
|
120,405
|
Wholesale | Secured by real estate | Total noninvestment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
44,355
|
|
41,933
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
1,042
|
|
4,477
|
Term loans originated in 2023/2022 |
4,818
|
|
12,579
|
Term loans originated in 2022/2021 |
12,979
|
|
7,839
|
Term loans originated in 2021/2020 |
8,575
|
|
3,840
|
Term loans originated in 2020/2019 |
3,743
|
|
3,987
|
Term loans originated prior to 2020/2019 |
11,795
|
|
7,918
|
Revolving loans within the revolving period |
1,402
|
|
1,291
|
Revolving loans converted to term loans |
1
|
|
2
|
Total retained loans |
44,355
|
|
41,933
|
Wholesale | Secured by real estate | Noncriticized |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
35,333
|
|
34,241
|
Loans by origination year |
|
|
|
Total retained loans |
35,333
|
|
34,241
|
Wholesale | Secured by real estate | Criticized performing |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
8,431
|
|
7,291
|
Loans by origination year |
|
|
|
Total retained loans |
8,431
|
|
7,291
|
Wholesale | Secured by real estate | Criticized nonaccrual |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
$ 591
|
|
$ 401
|
% of criticized nonaccrual to total retained loans |
0.36%
|
|
0.25%
|
Loans by origination year |
|
|
|
Total retained loans |
$ 591
|
|
$ 401
|
Wholesale | Commercial and industrial |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
$ 167,518
|
|
$ 167,166
|
% of investment-grade to total retained loans |
42.57%
|
|
43.44%
|
% of total criticized to total retained loans |
8.23%
|
|
8.32%
|
% of criticized nonaccrual to total retained loans |
0.86%
|
|
0.73%
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
$ 10,412
|
|
$ 33,765
|
Term loans originated in 2023/2022 |
25,270
|
|
27,086
|
Term loans originated in 2022/2021 |
25,015
|
|
13,575
|
Term loans originated in 2021/2020 |
12,516
|
|
4,280
|
Term loans originated in 2020/2019 |
3,412
|
|
2,174
|
Term loans originated prior to 2020/2019 |
3,613
|
|
2,121
|
Revolving loans within the revolving period |
87,164
|
|
84,090
|
Revolving loans converted to term loans |
116
|
|
75
|
Total retained loans |
167,518
|
|
167,166
|
Gross charge-offs by origination year |
|
|
|
Gross charge-offs originated in 2024/2023 |
3
|
|
25
|
Gross charge-offs originated in 2023/2022 |
3
|
|
8
|
Gross charge-offs originated in 2022/2021 |
19
|
|
110
|
Gross charge-offs originated in 2021/2020 |
3
|
|
55
|
Gross charge-offs originated in 2020/2019 |
1
|
|
2
|
Gross charge-offs originated prior to 2020/2019 |
3
|
|
12
|
Gross charge-offs originated within the revolving period |
43
|
|
259
|
Gross charge-offs originated converted to term loans |
0
|
|
8
|
Total gross charge-offs |
75
|
|
479
|
Wholesale | Commercial and industrial | Investment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
71,308
|
|
72,624
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
5,552
|
|
14,875
|
Term loans originated in 2023/2022 |
9,804
|
|
10,642
|
Term loans originated in 2022/2021 |
9,117
|
|
4,276
|
Term loans originated in 2021/2020 |
4,040
|
|
2,291
|
Term loans originated in 2020/2019 |
1,705
|
|
1,030
|
Term loans originated prior to 2020/2019 |
1,818
|
|
1,115
|
Revolving loans within the revolving period |
39,229
|
|
38,394
|
Revolving loans converted to term loans |
43
|
|
1
|
Total retained loans |
71,308
|
|
72,624
|
Wholesale | Commercial and industrial | Total noninvestment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
96,210
|
|
94,542
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
4,860
|
|
18,890
|
Term loans originated in 2023/2022 |
15,466
|
|
16,444
|
Term loans originated in 2022/2021 |
15,898
|
|
9,299
|
Term loans originated in 2021/2020 |
8,476
|
|
1,989
|
Term loans originated in 2020/2019 |
1,707
|
|
1,144
|
Term loans originated prior to 2020/2019 |
1,795
|
|
1,006
|
Revolving loans within the revolving period |
47,935
|
|
45,696
|
Revolving loans converted to term loans |
73
|
|
74
|
Total retained loans |
96,210
|
|
94,542
|
Wholesale | Commercial and industrial | Noncriticized |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
82,426
|
|
80,637
|
Loans by origination year |
|
|
|
Total retained loans |
82,426
|
|
80,637
|
Wholesale | Commercial and industrial | Criticized performing |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
12,349
|
|
12,684
|
Loans by origination year |
|
|
|
Total retained loans |
12,349
|
|
12,684
|
Wholesale | Commercial and industrial | Criticized nonaccrual |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
1,435
|
|
1,221
|
Loans by origination year |
|
|
|
Total retained loans |
1,435
|
|
1,221
|
Wholesale | Other |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
$ 337,059
|
|
$ 342,968
|
% of investment-grade to total retained loans |
78.16%
|
|
77.50%
|
% of total criticized to total retained loans |
0.75%
|
|
0.58%
|
% of criticized nonaccrual to total retained loans |
0.27%
|
|
0.21%
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
$ 13,887
|
|
$ 52,392
|
Term loans originated in 2023/2022 |
43,571
|
|
26,126
|
Term loans originated in 2022/2021 |
24,390
|
|
16,202
|
Term loans originated in 2021/2020 |
14,816
|
|
12,271
|
Term loans originated in 2020/2019 |
11,633
|
|
4,532
|
Term loans originated prior to 2020/2019 |
12,223
|
|
8,663
|
Revolving loans within the revolving period |
214,338
|
|
220,529
|
Revolving loans converted to term loans |
2,201
|
|
2,253
|
Total retained loans |
337,059
|
|
342,968
|
Gross charge-offs by origination year |
|
|
|
Gross charge-offs originated in 2024/2023 |
0
|
|
5
|
Gross charge-offs originated in 2023/2022 |
7
|
|
298
|
Gross charge-offs originated in 2022/2021 |
0
|
|
8
|
Gross charge-offs originated in 2021/2020 |
18
|
|
8
|
Gross charge-offs originated in 2020/2019 |
7
|
|
0
|
Gross charge-offs originated prior to 2020/2019 |
1
|
|
8
|
Gross charge-offs originated within the revolving period |
0
|
|
13
|
Gross charge-offs originated converted to term loans |
0
|
|
0
|
Total gross charge-offs |
33
|
|
340
|
Wholesale | Other | Individuals and individual entities |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
105,200
|
|
106,900
|
Loans by origination year |
|
|
|
Total retained loans |
105,200
|
|
106,900
|
Wholesale | Other | SPEs |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
87,300
|
|
91,200
|
Loans by origination year |
|
|
|
Total retained loans |
87,300
|
|
91,200
|
Wholesale | Other | Financial institutions |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
85,100
|
|
87,500
|
Loans by origination year |
|
|
|
Total retained loans |
85,100
|
|
87,500
|
Wholesale | Other | Investment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
263,455
|
|
265,809
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
10,191
|
|
38,338
|
Term loans originated in 2023/2022 |
32,625
|
|
18,034
|
Term loans originated in 2022/2021 |
17,015
|
|
10,033
|
Term loans originated in 2021/2020 |
9,037
|
|
10,099
|
Term loans originated in 2020/2019 |
9,635
|
|
3,721
|
Term loans originated prior to 2020/2019 |
9,691
|
|
6,662
|
Revolving loans within the revolving period |
173,115
|
|
176,728
|
Revolving loans converted to term loans |
2,146
|
|
2,194
|
Total retained loans |
263,455
|
|
265,809
|
Wholesale | Other | Total noninvestment-grade |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
73,604
|
|
77,159
|
Loans by origination year |
|
|
|
Term loans originated in 2024/2023 |
3,696
|
|
14,054
|
Term loans originated in 2023/2022 |
10,946
|
|
8,092
|
Term loans originated in 2022/2021 |
7,375
|
|
6,169
|
Term loans originated in 2021/2020 |
5,779
|
|
2,172
|
Term loans originated in 2020/2019 |
1,998
|
|
811
|
Term loans originated prior to 2020/2019 |
2,532
|
|
2,001
|
Revolving loans within the revolving period |
41,223
|
|
43,801
|
Revolving loans converted to term loans |
55
|
|
59
|
Total retained loans |
73,604
|
|
77,159
|
Wholesale | Other | Noncriticized |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
71,091
|
|
75,178
|
Loans by origination year |
|
|
|
Total retained loans |
71,091
|
|
75,178
|
Wholesale | Other | Criticized performing |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
1,612
|
|
1,257
|
Loans by origination year |
|
|
|
Total retained loans |
1,612
|
|
1,257
|
Wholesale | Other | Criticized nonaccrual |
|
|
|
Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
|
Retained loans |
901
|
|
724
|
Loans by origination year |
|
|
|
Total retained loans |
$ 901
|
|
$ 724
|