Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions |
Jun. 30, 2019 |
Dec. 31, 2018 |
| Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 104
|
|
| Due in One Year or Less, Yield |
4.27%
|
|
| Due after One Year through Five Years, Amount |
$ 37
|
|
| Due after One Year through Five Years, Yield |
3.97%
|
|
| Due after Five Years through Ten Years, Amount |
$ 1,137
|
|
| Due after Five Years though Ten Years, Yield |
2.55%
|
|
| Due after Ten Years, Amount |
$ 198,703
|
|
| Due after Ten Years, Yield |
3.24%
|
|
| Amortized Cost |
$ 199,981
|
$ 203,652
|
| Total, Yield |
3.24%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Debt securities carried at fair value |
$ 246,094
|
238,101
|
| Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Due in One Year or Less, Amount |
104
|
|
| Due after One Year through Five Years, Amount |
37
|
|
| Due after Five Years though Ten Years, Amount |
1,148
|
|
| Due after Ten Years, Amount |
201,195
|
|
| Debt Securities, Held-to-maturity, Fair Value |
202,484
|
$ 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 |
$ 9
|
|
| Due in One Year or Less, Yield |
1.78%
|
|
| Due after One Year through Five Years, Amount |
$ 2,650
|
|
| Due after One Year through Five Years, Yield |
2.38%
|
|
| Due after Five Years though Ten Years, Amount |
$ 12,726
|
|
| Due after Five Years though Ten Years, Yield |
2.53%
|
|
| Due after Ten Years, Amount |
$ 133,105
|
|
| Due after Ten Years, Yield |
3.50%
|
|
| Total, Amount |
$ 148,490
|
|
| Total, Yield |
3.40%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 9
|
|
| Due after One Year through Five Years, Amount |
2,679
|
|
| Due after Five Years though Ten Years, Amount |
12,903
|
|
| Due after Ten Years, Amount |
133,333
|
|
| Debt securities carried at fair value |
148,924
|
|
| 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 |
$ 130
|
|
| Due after One Year through Five Years, Yield |
2.33%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,814
|
|
| Due after Five Years though Ten Years, Yield |
2.41%
|
|
| Due after Ten Years, Amount |
$ 123,848
|
|
| Due after Ten Years, Yield |
3.33%
|
|
| Total, Amount |
$ 125,792
|
|
| Total, Yield |
3.32%
|
|
| 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 |
130
|
|
| Due after Five Years though Ten Years, Amount |
1,814
|
|
| Due after Ten Years, Amount |
123,625
|
|
| Debt securities carried at fair value |
125,569
|
|
| 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 |
$ 28
|
|
| Due after Five Years though Ten Years, Yield |
2.54%
|
|
| Due after Ten Years, Amount |
$ 5,129
|
|
| Due after Ten Years, Yield |
3.17%
|
|
| Total, Amount |
$ 5,157
|
|
| Total, Yield |
3.17%
|
|
| 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 |
28
|
|
| Due after Ten Years, Amount |
5,182
|
|
| Debt securities carried at fair value |
5,210
|
|
| Commercial |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 9
|
|
| Due in One Year or Less, Yield |
1.78%
|
|
| Due after One Year through Five Years, Amount |
$ 2,520
|
|
| Due after One Year through Five Years, Yield |
2.38%
|
|
| Due after Five Years though Ten Years, Amount |
$ 10,871
|
|
| Due after Five Years though Ten Years, Yield |
2.55%
|
|
| Due after Ten Years, Amount |
$ 913
|
|
| Due after Ten Years, Yield |
3.00%
|
|
| Total, Amount |
$ 14,313
|
|
| Total, Yield |
2.55%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 9
|
|
| Due after One Year through Five Years, Amount |
2,549
|
|
| Due after Five Years though Ten Years, Amount |
11,034
|
|
| Due after Ten Years, Amount |
933
|
|
| Debt securities carried at fair value |
14,525
|
|
| 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 |
$ 13
|
|
| Due after Five Years though Ten Years, Yield |
0.00%
|
|
| Due after Ten Years, Amount |
$ 3,215
|
|
| Due after Ten Years, Yield |
10.50%
|
|
| Total, Amount |
$ 3,228
|
|
| Total, Yield |
10.46%
|
|
| 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 |
27
|
|
| Due after Ten Years, Amount |
3,593
|
|
| Debt securities carried at fair value |
3,620
|
|
| 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 |
$ 924
|
|
| Due in One Year or Less, Yield |
0.18%
|
|
| Due after One Year through Five Years, Amount |
$ 32,924
|
|
| Due after One Year through Five Years, Yield |
1.60%
|
|
| Due after Five Years though Ten Years, Amount |
$ 22,291
|
|
| Due after Five Years though Ten Years, Yield |
2.45%
|
|
| Due after Ten Years, Amount |
$ 18
|
|
| Due after Ten Years, Yield |
2.50%
|
|
| Total, Amount |
$ 56,157
|
|
| Total, Yield |
1.92%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 924
|
|
| Due after One Year through Five Years, Amount |
32,856
|
|
| Due after Five Years though Ten Years, Amount |
23,020
|
|
| Due after Ten Years, Amount |
19
|
|
| Debt securities carried at fair value |
56,819
|
|
| Non-U.S. securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,940
|
|
| Due in One Year or Less, Yield |
0.97%
|
|
| Due after One Year through Five Years, Amount |
$ 620
|
|
| Due after One Year through Five Years, Yield |
1.55%
|
|
| Due after Five Years though Ten Years, Amount |
$ 13
|
|
| Due after Five Years though Ten Years, Yield |
4.30%
|
|
| Due after Ten Years, Amount |
$ 108
|
|
| Due after Ten Years, Yield |
6.50%
|
|
| Total, Amount |
$ 19,681
|
|
| Total, Yield |
1.02%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,944
|
|
| Due after One Year through Five Years, Amount |
630
|
|
| Due after Five Years though Ten Years, Amount |
14
|
|
| Due after Ten Years, Amount |
111
|
|
| Debt securities carried at fair value |
19,699
|
|
| 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 |
$ 736
|
|
| Due in One Year or Less, Yield |
3.67%
|
|
| Due after One Year through Five Years, Amount |
$ 2,243
|
|
| Due after One Year through Five Years, Yield |
3.44%
|
|
| Due after Five Years though Ten Years, Amount |
$ 393
|
|
| Due after Five Years though Ten Years, Yield |
3.62%
|
|
| Due after Ten Years, Amount |
$ 250
|
|
| Due after Ten Years, Yield |
4.31%
|
|
| Total, Amount |
$ 3,622
|
|
| Total, Yield |
3.57%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 743
|
|
| Due after One Year through Five Years, Amount |
2,284
|
|
| Due after Five Years though Ten Years, Amount |
417
|
|
| Due after Ten Years, Amount |
254
|
|
| Debt securities carried at fair value |
3,698
|
|
| Total taxable securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 20,609
|
|
| Due in One Year or Less, Yield |
1.04%
|
|
| Due after One Year through Five Years, Amount |
$ 38,437
|
|
| Due after One Year through Five Years, Yield |
1.76%
|
|
| Due after Five Years though Ten Years, Amount |
$ 35,423
|
|
| Due after Five Years though Ten Years, Yield |
2.50%
|
|
| Due after Ten Years, Amount |
$ 133,481
|
|
| Due after Ten Years, Yield |
3.50%
|
|
| Total, Amount |
$ 227,950
|
|
| Total, Yield |
2.83%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 20,620
|
|
| Due after One Year through Five Years, Amount |
38,449
|
|
| Due after Five Years though Ten Years, Amount |
36,354
|
|
| Due after Ten Years, Amount |
133,717
|
|
| Debt securities carried at fair value |
229,140
|
|
| Tax-exempt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,004
|
|
| Due in One Year or Less, Yield |
2.53%
|
|
| Due after One Year through Five Years, Amount |
$ 6,895
|
|
| Due after One Year through Five Years, Yield |
2.34%
|
|
| Due after Five Years though Ten Years, Amount |
$ 5,958
|
|
| Due after Five Years though Ten Years, Yield |
2.44%
|
|
| Due after Ten Years, Amount |
$ 2,942
|
|
| Due after Ten Years, Yield |
2.55%
|
|
| Total, Amount |
$ 16,799
|
|
| Total, Yield |
2.42%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 1,005
|
|
| Due after One Year through Five Years, Amount |
6,908
|
|
| Due after Five Years though Ten Years, Amount |
6,074
|
|
| Due after Ten Years, Amount |
2,967
|
|
| Debt securities carried at fair value |
16,954
|
|
| Debt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 21,613
|
|
| Due in One Year or Less, Yield |
1.11%
|
|
| Due after One Year through Five Years, Amount |
$ 45,332
|
|
| Due after One Year through Five Years, Yield |
1.85%
|
|
| Due after Five Years though Ten Years, Amount |
$ 41,381
|
|
| Due after Five Years though Ten Years, Yield |
2.49%
|
|
| Due after Ten Years, Amount |
$ 136,423
|
|
| Due after Ten Years, Yield |
3.48%
|
|
| Total, Amount |
$ 244,749
|
|
| Total, Yield |
2.80%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 21,625
|
|
| Due after One Year through Five Years, Amount |
45,357
|
|
| Due after Five Years though Ten Years, Amount |
42,428
|
|
| Due after Ten Years, Amount |
136,684
|
|
| Debt securities carried at fair value |
$ 246,094
|
|