Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,025
|
|
| Due in One Year or Less, Yield |
2.83%
|
|
| Due after One Year through Five Years, Amount |
$ 48
|
|
| Due after One Year through Five Years, Yield |
3.57%
|
|
| Due after Five Years through Ten Years, Amount |
$ 1,102
|
|
| Due after Five Years though Ten Years, Yield |
2.57%
|
|
| Due after Ten Years, Amount |
$ 213,555
|
|
| Due after Ten Years, Yield |
3.19%
|
|
| Amortized Cost |
$ 215,730
|
$ 203,652
|
| Total, Yield |
3.19%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Debt securities carried at fair value |
$ 256,467
|
238,101
|
| Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Due in One Year or Less, Amount |
1,025
|
|
| Due after One Year through Five Years, Amount |
48
|
|
| Due after Five Years though Ten Years, Amount |
1,113
|
|
| Due after Ten Years, Amount |
217,635
|
|
| Debt Securities, Held-to-maturity, Fair Value |
219,821
|
$ 200,435
|
| Mortgage-backed securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due in One Year or Less, Yield |
0.00%
|
|
| Due after One Year through Five Years, Amount |
$ 3,817
|
|
| Due after One Year through Five Years, Yield |
2.38%
|
|
| Due after Five Years though Ten Years, Amount |
$ 10,241
|
|
| Due after Five Years though Ten Years, Yield |
2.58%
|
|
| Due after Ten Years, Amount |
$ 132,203
|
|
| Due after Ten Years, Yield |
3.33%
|
|
| Total, Amount |
$ 146,261
|
|
| Total, Yield |
3.25%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due after One Year through Five Years, Amount |
3,865
|
|
| Due after Five Years though Ten Years, Amount |
10,409
|
|
| Due after Ten Years, Amount |
133,343
|
|
| Debt securities carried at fair value |
147,617
|
|
| Agency |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due in One Year or Less, Yield |
0.00%
|
|
| Due after One Year through Five Years, Amount |
$ 11
|
|
| Due after One Year through Five Years, Yield |
5.25%
|
|
| Due after Five Years though Ten Years, Amount |
$ 66
|
|
| Due after Five Years though Ten Years, Yield |
4.56%
|
|
| Due after Ten Years, Amount |
$ 124,618
|
|
| Due after Ten Years, Yield |
3.24%
|
|
| Total, Amount |
$ 124,695
|
|
| Total, Yield |
3.24%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due after One Year through Five Years, Amount |
11
|
|
| Due after Five Years though Ten Years, Amount |
71
|
|
| Due after Ten Years, Amount |
125,449
|
|
| Debt securities carried at fair value |
125,531
|
|
| Agency-collateralized mortgage obligations |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due in One Year or Less, Yield |
0.00%
|
|
| Due after One Year through Five Years, Amount |
$ 0
|
|
| Due after One Year through Five Years, Yield |
0.00%
|
|
| Due after Five Years though Ten Years, Amount |
$ 27
|
|
| Due after Five Years though Ten Years, Yield |
2.48%
|
|
| Due after Ten Years, Amount |
$ 4,560
|
|
| Due after Ten Years, Yield |
3.16%
|
|
| Total, Amount |
$ 4,587
|
|
| Total, Yield |
3.16%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due after One Year through Five Years, Amount |
0
|
|
| Due after Five Years though Ten Years, Amount |
26
|
|
| Due after Ten Years, Amount |
4,615
|
|
| Debt securities carried at fair value |
4,641
|
|
| Commercial |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due in One Year or Less, Yield |
0.00%
|
|
| Due after One Year through Five Years, Amount |
$ 3,806
|
|
| Due after One Year through Five Years, Yield |
2.37%
|
|
| Due after Five Years though Ten Years, Amount |
$ 10,136
|
|
| Due after Five Years though Ten Years, Yield |
2.57%
|
|
| Due after Ten Years, Amount |
$ 868
|
|
| Due after Ten Years, Yield |
2.99%
|
|
| Total, Amount |
$ 14,810
|
|
| Total, Yield |
2.54%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due after One Year through Five Years, Amount |
3,854
|
|
| Due after Five Years though Ten Years, Amount |
10,287
|
|
| Due after Ten Years, Amount |
893
|
|
| Debt securities carried at fair value |
15,034
|
|
| Non-agency residential |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due in One Year or Less, Yield |
0.00%
|
|
| Due after One Year through Five Years, Amount |
$ 0
|
|
| Due after One Year through Five Years, Yield |
0.00%
|
|
| Due after Five Years though Ten Years, Amount |
$ 12
|
|
| Due after Five Years though Ten Years, Yield |
0.00%
|
|
| Due after Ten Years, Amount |
$ 2,157
|
|
| Due after Ten Years, Yield |
9.26%
|
|
| Total, Amount |
$ 2,169
|
|
| Total, Yield |
9.22%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 0
|
|
| Due after One Year through Five Years, Amount |
0
|
|
| Due after Five Years though Ten Years, Amount |
25
|
|
| Due after Ten Years, Amount |
2,386
|
|
| Debt securities carried at fair value |
2,411
|
|
| U.S. Treasury and agency securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,350
|
|
| Due in One Year or Less, Yield |
0.92%
|
|
| Due after One Year through Five Years, Amount |
$ 35,544
|
|
| Due after One Year through Five Years, Yield |
1.67%
|
|
| Due after Five Years though Ten Years, Amount |
$ 30,789
|
|
| Due after Five Years though Ten Years, Yield |
2.25%
|
|
| Due after Ten Years, Amount |
$ 20
|
|
| Due after Ten Years, Yield |
2.45%
|
|
| Total, Amount |
$ 67,703
|
|
| Total, Yield |
1.92%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,347
|
|
| Due after One Year through Five Years, Amount |
35,686
|
|
| Due after Five Years though Ten Years, Amount |
31,478
|
|
| Due after Ten Years, Amount |
20
|
|
| Debt securities carried at fair value |
68,531
|
|
| Non-U.S. securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 15,648
|
|
| Due in One Year or Less, Yield |
1.17%
|
|
| Due after One Year through Five Years, Amount |
$ 2,598
|
|
| Due after One Year through Five Years, Yield |
1.03%
|
|
| Due after Five Years though Ten Years, Amount |
$ 7
|
|
| Due after Five Years though Ten Years, Yield |
4.17%
|
|
| Due after Ten Years, Amount |
$ 96
|
|
| Due after Ten Years, Yield |
6.74%
|
|
| Total, Amount |
$ 18,349
|
|
| Total, Yield |
1.18%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 15,751
|
|
| Due after One Year through Five Years, Amount |
2,606
|
|
| Due after Five Years though Ten Years, Amount |
8
|
|
| Due after Ten Years, Amount |
98
|
|
| Debt securities carried at fair value |
18,463
|
|
| Other taxable securities, substantially all asset-backed securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,189
|
|
| Due in One Year or Less, Yield |
2.80%
|
|
| Due after One Year through Five Years, Amount |
$ 1,650
|
|
| Due after One Year through Five Years, Yield |
3.02%
|
|
| Due after Five Years though Ten Years, Amount |
$ 440
|
|
| Due after Five Years though Ten Years, Yield |
3.32%
|
|
| Due after Ten Years, Amount |
$ 595
|
|
| Due after Ten Years, Yield |
2.91%
|
|
| Total, Amount |
$ 3,874
|
|
| Total, Yield |
2.97%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,196
|
|
| Due after One Year through Five Years, Amount |
1,687
|
|
| Due after Five Years though Ten Years, Amount |
465
|
|
| Due after Ten Years, Amount |
596
|
|
| Debt securities carried at fair value |
3,944
|
|
| Total taxable securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,187
|
|
| Due in One Year or Less, Yield |
1.26%
|
|
| Due after One Year through Five Years, Amount |
$ 43,609
|
|
| Due after One Year through Five Years, Yield |
1.74%
|
|
| Due after Five Years though Ten Years, Amount |
$ 41,477
|
|
| Due after Five Years though Ten Years, Yield |
2.34%
|
|
| Due after Ten Years, Amount |
$ 132,914
|
|
| Due after Ten Years, Yield |
3.34%
|
|
| Total, Amount |
$ 236,187
|
|
| Total, Yield |
2.70%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,294
|
|
| Due after One Year through Five Years, Amount |
43,844
|
|
| Due after Five Years though Ten Years, Amount |
42,360
|
|
| Due after Ten Years, Amount |
134,057
|
|
| Debt securities carried at fair value |
238,555
|
|
| Tax-exempt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 2,189
|
|
| Due in One Year or Less, Yield |
1.72%
|
|
| Due after One Year through Five Years, Amount |
$ 7,472
|
|
| Due after One Year through Five Years, Yield |
2.10%
|
|
| Due after Five Years though Ten Years, Amount |
$ 4,849
|
|
| Due after Five Years though Ten Years, Yield |
2.06%
|
|
| Due after Ten Years, Amount |
$ 3,206
|
|
| Due after Ten Years, Yield |
2.44%
|
|
| Total, Amount |
$ 17,716
|
|
| Total, Yield |
2.10%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 2,192
|
|
| Due after One Year through Five Years, Amount |
7,509
|
|
| Due after Five Years though Ten Years, Amount |
4,976
|
|
| Due after Ten Years, Amount |
3,235
|
|
| Debt securities carried at fair value |
17,912
|
|
| Debt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 20,376
|
|
| Due in One Year or Less, Yield |
1.31%
|
|
| Due after One Year through Five Years, Amount |
$ 51,081
|
|
| Due after One Year through Five Years, Yield |
1.79%
|
|
| Due after Five Years though Ten Years, Amount |
$ 46,326
|
|
| Due after Five Years though Ten Years, Yield |
2.31%
|
|
| Due after Ten Years, Amount |
$ 136,120
|
|
| Due after Ten Years, Yield |
3.32%
|
|
| Total, Amount |
$ 253,903
|
|
| Total, Yield |
2.67%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 20,486
|
|
| Due after One Year through Five Years, Amount |
51,353
|
|
| Due after Five Years though Ten Years, Amount |
47,336
|
|
| Due after Ten Years, Amount |
137,292
|
|
| Debt securities carried at fair value |
$ 256,467
|
|