Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) - USD ($)
$ in Millions |
Sep. 30, 2025 |
Dec. 31, 2024 |
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
$ 11,351
|
|
| Available for sale, under 1 year, fair value |
11,356
|
|
| Available for sale, 1 to 5 years, amortized cost |
35,541
|
|
| Available for sale, 1 to 5 years, fair value |
35,671
|
|
| Available for sale, 6 to 10 years, amortized cost |
6,037
|
|
| Available for sale, 6 to 10 years, fair value |
6,032
|
|
| Available for sale, over 10 years, amortized cost |
16,371
|
|
| Available for sale, over 10 years, fair value |
16,384
|
|
| Available for sale, amortized cost |
69,300
|
$ 59,006
|
| Available for sale, fair value |
69,443
|
58,895
|
| Held to maturity, under 1 year, amortized cost |
3,648
|
|
| Held to maturity, under 1 year, fair value |
3,618
|
|
| Held to maturity, 1 to 5 years, amortized cost |
5,484
|
|
| Held to maturity, 1 to 5 years, fair value |
5,147
|
|
| Held to maturity, 6 to 10 years, amortized cost |
1,869
|
|
| Held to maturity, 6 to 10 years, fair value |
1,720
|
|
| Held to maturity, over 10 years, amortized cost |
29,933
|
|
| Held to maturity, over 10 years, fair value |
26,169
|
|
| Held to maturity, amortized cost |
40,934
|
47,727
|
| Investment securities held-to-maturity |
36,654
|
41,906
|
| Total U.S. Treasury and federal agencies |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
6,410
|
|
| Available for sale, under 1 year, fair value |
6,408
|
|
| Available for sale, 1 to 5 years, amortized cost |
19,283
|
|
| Available for sale, 1 to 5 years, fair value |
19,299
|
|
| Available for sale, 6 to 10 years, amortized cost |
1,746
|
|
| Available for sale, 6 to 10 years, fair value |
1,734
|
|
| Available for sale, over 10 years, amortized cost |
12,262
|
|
| Available for sale, over 10 years, fair value |
12,263
|
|
| Available for sale, amortized cost |
39,701
|
34,238
|
| Available for sale, fair value |
39,704
|
34,091
|
| Held to maturity, under 1 year, amortized cost |
2,058
|
|
| Held to maturity, under 1 year, fair value |
2,042
|
|
| Held to maturity, 1 to 5 years, amortized cost |
3,692
|
|
| Held to maturity, 1 to 5 years, fair value |
3,374
|
|
| Held to maturity, 6 to 10 years, amortized cost |
1,353
|
|
| Held to maturity, 6 to 10 years, fair value |
1,206
|
|
| Held to maturity, over 10 years, amortized cost |
28,591
|
|
| Held to maturity, over 10 years, fair value |
24,842
|
|
| Held to maturity, amortized cost |
35,694
|
41,518
|
| Investment securities held-to-maturity |
31,464
|
35,788
|
| Direct obligations |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
6,277
|
|
| Available for sale, under 1 year, fair value |
6,275
|
|
| Available for sale, 1 to 5 years, amortized cost |
17,671
|
|
| Available for sale, 1 to 5 years, fair value |
17,688
|
|
| Available for sale, 6 to 10 years, amortized cost |
188
|
|
| Available for sale, 6 to 10 years, fair value |
190
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
24,136
|
23,539
|
| Available for sale, fair value |
24,153
|
23,525
|
| Held to maturity, under 1 year, amortized cost |
1,901
|
|
| Held to maturity, under 1 year, fair value |
1,895
|
|
| Held to maturity, 1 to 5 years, amortized cost |
102
|
|
| Held to maturity, 1 to 5 years, fair value |
101
|
|
| Held to maturity, 6 to 10 years, amortized cost |
1
|
|
| Held to maturity, 6 to 10 years, fair value |
1
|
|
| Held to maturity, over 10 years, amortized cost |
7
|
|
| Held to maturity, over 10 years, fair value |
6
|
|
| Held to maturity, amortized cost |
2,011
|
5,417
|
| Investment securities held-to-maturity |
2,003
|
5,362
|
| Mortgage-backed securities |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
133
|
|
| Available for sale, under 1 year, fair value |
133
|
|
| Available for sale, 1 to 5 years, amortized cost |
1,612
|
|
| Available for sale, 1 to 5 years, fair value |
1,611
|
|
| Available for sale, 6 to 10 years, amortized cost |
1,558
|
|
| Available for sale, 6 to 10 years, fair value |
1,544
|
|
| Available for sale, over 10 years, amortized cost |
12,262
|
|
| Available for sale, over 10 years, fair value |
12,263
|
|
| Available for sale, amortized cost |
15,565
|
10,699
|
| Available for sale, fair value |
15,551
|
10,566
|
| Held to maturity, under 1 year, amortized cost |
157
|
|
| Held to maturity, under 1 year, fair value |
147
|
|
| Held to maturity, 1 to 5 years, amortized cost |
3,590
|
|
| Held to maturity, 1 to 5 years, fair value |
3,273
|
|
| Held to maturity, 6 to 10 years, amortized cost |
1,352
|
|
| Held to maturity, 6 to 10 years, fair value |
1,205
|
|
| Held to maturity, over 10 years, amortized cost |
28,584
|
|
| Held to maturity, over 10 years, fair value |
24,836
|
|
| Held to maturity, amortized cost |
33,683
|
36,101
|
| Investment securities held-to-maturity |
29,461
|
30,426
|
| Total non-U.S. debt securities |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
4,808
|
|
| Available for sale, under 1 year, fair value |
4,815
|
|
| Available for sale, 1 to 5 years, amortized cost |
16,060
|
|
| Available for sale, 1 to 5 years, fair value |
16,173
|
|
| Available for sale, 6 to 10 years, amortized cost |
2,859
|
|
| Available for sale, 6 to 10 years, fair value |
2,861
|
|
| Available for sale, over 10 years, amortized cost |
2,840
|
|
| Available for sale, over 10 years, fair value |
2,849
|
|
| Available for sale, amortized cost |
26,567
|
21,032
|
| Available for sale, fair value |
26,698
|
21,058
|
| Held to maturity, under 1 year, amortized cost |
1,457
|
|
| Held to maturity, under 1 year, fair value |
1,446
|
|
| Held to maturity, 1 to 5 years, amortized cost |
1,357
|
|
| Held to maturity, 1 to 5 years, fair value |
1,339
|
|
| Held to maturity, 6 to 10 years, amortized cost |
94
|
|
| Held to maturity, 6 to 10 years, fair value |
92
|
|
| Held to maturity, over 10 years, amortized cost |
0
|
|
| Held to maturity, over 10 years, fair value |
0
|
|
| Held to maturity, amortized cost |
2,908
|
3,673
|
| Investment securities held-to-maturity |
2,877
|
3,607
|
| Mortgage-backed securities |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
205
|
|
| Available for sale, under 1 year, fair value |
206
|
|
| Available for sale, 1 to 5 years, amortized cost |
465
|
|
| Available for sale, 1 to 5 years, fair value |
466
|
|
| Available for sale, 6 to 10 years, amortized cost |
0
|
|
| Available for sale, 6 to 10 years, fair value |
0
|
|
| Available for sale, over 10 years, amortized cost |
2,113
|
|
| Available for sale, over 10 years, fair value |
2,120
|
|
| Available for sale, amortized cost |
2,783
|
2,426
|
| Available for sale, fair value |
2,792
|
2,430
|
| Asset-backed securities |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
124
|
|
| Available for sale, under 1 year, fair value |
124
|
|
| Available for sale, 1 to 5 years, amortized cost |
376
|
|
| Available for sale, 1 to 5 years, fair value |
376
|
|
| Available for sale, 6 to 10 years, amortized cost |
1,147
|
|
| Available for sale, 6 to 10 years, fair value |
1,151
|
|
| Available for sale, over 10 years, amortized cost |
727
|
|
| Available for sale, over 10 years, fair value |
729
|
|
| Available for sale, amortized cost |
2,374
|
1,865
|
| Available for sale, fair value |
2,380
|
1,868
|
| Non-U.S. sovereign, supranational and non-U.S. agency |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
3,805
|
|
| Available for sale, under 1 year, fair value |
3,809
|
|
| Available for sale, 1 to 5 years, amortized cost |
12,941
|
|
| Available for sale, 1 to 5 years, fair value |
13,009
|
|
| Available for sale, 6 to 10 years, amortized cost |
1,650
|
|
| Available for sale, 6 to 10 years, fair value |
1,646
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
18,396
|
13,954
|
| Available for sale, fair value |
18,464
|
13,939
|
| Held to maturity, under 1 year, amortized cost |
1,457
|
|
| Held to maturity, under 1 year, fair value |
1,446
|
|
| Held to maturity, 1 to 5 years, amortized cost |
1,357
|
|
| Held to maturity, 1 to 5 years, fair value |
1,339
|
|
| Held to maturity, 6 to 10 years, amortized cost |
94
|
|
| Held to maturity, 6 to 10 years, fair value |
92
|
|
| Held to maturity, over 10 years, amortized cost |
0
|
|
| Held to maturity, over 10 years, fair value |
0
|
|
| Held to maturity, amortized cost |
2,908
|
3,673
|
| Investment securities held-to-maturity |
2,877
|
3,607
|
| Other |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
674
|
|
| Available for sale, under 1 year, fair value |
676
|
|
| Available for sale, 1 to 5 years, amortized cost |
2,278
|
|
| Available for sale, 1 to 5 years, fair value |
2,322
|
|
| Available for sale, 6 to 10 years, amortized cost |
62
|
|
| Available for sale, 6 to 10 years, fair value |
64
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
3,014
|
2,787
|
| Available for sale, fair value |
3,062
|
2,821
|
| Total asset-backed securities |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
130
|
|
| Available for sale, under 1 year, fair value |
130
|
|
| Available for sale, 1 to 5 years, amortized cost |
172
|
|
| Available for sale, 1 to 5 years, fair value |
173
|
|
| Available for sale, 6 to 10 years, amortized cost |
1,432
|
|
| Available for sale, 6 to 10 years, fair value |
1,437
|
|
| Available for sale, over 10 years, amortized cost |
1,269
|
|
| Available for sale, over 10 years, fair value |
1,272
|
|
| Available for sale, amortized cost |
3,003
|
3,627
|
| Available for sale, fair value |
3,012
|
3,638
|
| Held to maturity, under 1 year, amortized cost |
133
|
|
| Held to maturity, under 1 year, fair value |
130
|
|
| Held to maturity, 1 to 5 years, amortized cost |
435
|
|
| Held to maturity, 1 to 5 years, fair value |
434
|
|
| Held to maturity, 6 to 10 years, amortized cost |
422
|
|
| Held to maturity, 6 to 10 years, fair value |
422
|
|
| Held to maturity, over 10 years, amortized cost |
1,342
|
|
| Held to maturity, over 10 years, fair value |
1,327
|
|
| Held to maturity, amortized cost |
2,332
|
2,536
|
| Investment securities held-to-maturity |
2,313
|
2,511
|
| Student loans |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
22
|
|
| Available for sale, under 1 year, fair value |
22
|
|
| Available for sale, 1 to 5 years, amortized cost |
0
|
|
| Available for sale, 1 to 5 years, fair value |
0
|
|
| Available for sale, 6 to 10 years, amortized cost |
10
|
|
| Available for sale, 6 to 10 years, fair value |
10
|
|
| Available for sale, over 10 years, amortized cost |
49
|
|
| Available for sale, over 10 years, fair value |
49
|
|
| Available for sale, amortized cost |
81
|
89
|
| Available for sale, fair value |
81
|
90
|
| Held to maturity, under 1 year, amortized cost |
133
|
|
| Held to maturity, under 1 year, fair value |
130
|
|
| Held to maturity, 1 to 5 years, amortized cost |
435
|
|
| Held to maturity, 1 to 5 years, fair value |
434
|
|
| Held to maturity, 6 to 10 years, amortized cost |
422
|
|
| Held to maturity, 6 to 10 years, fair value |
422
|
|
| Held to maturity, over 10 years, amortized cost |
1,342
|
|
| Held to maturity, over 10 years, fair value |
1,327
|
|
| Held to maturity, amortized cost |
2,332
|
2,536
|
| Investment securities held-to-maturity |
2,313
|
2,511
|
| Collateralized loan obligations |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
108
|
|
| Available for sale, under 1 year, fair value |
108
|
|
| Available for sale, 1 to 5 years, amortized cost |
82
|
|
| Available for sale, 1 to 5 years, fair value |
82
|
|
| Available for sale, 6 to 10 years, amortized cost |
1,422
|
|
| Available for sale, 6 to 10 years, fair value |
1,423
|
|
| Available for sale, over 10 years, amortized cost |
1,220
|
|
| Available for sale, over 10 years, fair value |
1,223
|
|
| Available for sale, amortized cost |
2,832
|
3,447
|
| Available for sale, fair value |
2,836
|
3,453
|
| Non-agency CMBS and RMBS |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
0
|
|
| Available for sale, under 1 year, fair value |
0
|
|
| Available for sale, 1 to 5 years, amortized cost |
0
|
|
| Available for sale, 1 to 5 years, fair value |
0
|
|
| Available for sale, 6 to 10 years, amortized cost |
0
|
|
| Available for sale, 6 to 10 years, fair value |
4
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
0
|
1
|
| Available for sale, fair value |
4
|
4
|
| Other |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
0
|
|
| Available for sale, under 1 year, fair value |
0
|
|
| Available for sale, 1 to 5 years, amortized cost |
90
|
|
| Available for sale, 1 to 5 years, fair value |
91
|
|
| Available for sale, 6 to 10 years, amortized cost |
0
|
|
| Available for sale, 6 to 10 years, fair value |
0
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
90
|
90
|
| Available for sale, fair value |
91
|
91
|
| State and political subdivisions |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
0
|
|
| Available for sale, under 1 year, fair value |
0
|
|
| Available for sale, 1 to 5 years, amortized cost |
26
|
|
| Available for sale, 1 to 5 years, fair value |
26
|
|
| Available for sale, 6 to 10 years, amortized cost |
0
|
|
| Available for sale, 6 to 10 years, fair value |
0
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
26
|
56
|
| Available for sale, fair value |
26
|
56
|
| Other |
|
|
| Contractual Maturities Of Debt Investment Securities [Line Items] |
|
|
| Available for sale, under 1 year, amortized cost |
3
|
|
| Available for sale, under 1 year, fair value |
3
|
|
| Available for sale, 1 to 5 years, amortized cost |
0
|
|
| Available for sale, 1 to 5 years, fair value |
0
|
|
| Available for sale, 6 to 10 years, amortized cost |
0
|
|
| Available for sale, 6 to 10 years, fair value |
0
|
|
| Available for sale, over 10 years, amortized cost |
0
|
|
| Available for sale, over 10 years, fair value |
0
|
|
| Available for sale, amortized cost |
3
|
53
|
| Available for sale, fair value |
$ 3
|
$ 52
|