Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions |
Mar. 31, 2019 |
Dec. 31, 2018 |
| Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 370
|
|
| Due in One Year or Less, Yield |
5.41%
|
|
| Due after One Year through Five Years, Amount |
$ 17
|
|
| Due after One Year through Five Years, Yield |
3.93%
|
|
| Due after Five Years through Ten Years, Amount |
$ 1,669
|
|
| Due after Five Years though Ten Years, Yield |
3.04%
|
|
| Due after Ten Years, Amount |
$ 196,662
|
|
| Due after Ten Years, Yield |
3.23%
|
|
| Amortized Cost |
$ 198,718
|
$ 203,652
|
| Total, Yield |
3.24%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Debt securities carried at fair value |
$ 241,956
|
238,101
|
| Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Due in One Year or Less, Amount |
370
|
|
| Due after One Year through Five Years, Amount |
17
|
|
| Due after Five Years though Ten Years, Amount |
1,650
|
|
| Due after Ten Years, Amount |
196,493
|
|
| Debt Securities, Held-to-maturity, Fair Value |
198,530
|
$ 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 |
$ 135
|
|
| Due in One Year or Less, Yield |
1.78%
|
|
| Due after One Year through Five Years, Amount |
$ 2,641
|
|
| Due after One Year through Five Years, Yield |
2.36%
|
|
| Due after Five Years though Ten Years, Amount |
$ 12,530
|
|
| Due after Five Years though Ten Years, Yield |
2.52%
|
|
| Due after Ten Years, Amount |
$ 127,737
|
|
| Due after Ten Years, Yield |
3.49%
|
|
| Total, Amount |
$ 143,043
|
|
| Total, Yield |
3.38%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 135
|
|
| Due after One Year through Five Years, Amount |
2,626
|
|
| Due after Five Years though Ten Years, Amount |
12,431
|
|
| Due after Ten Years, Amount |
126,387
|
|
| Debt securities carried at fair value |
141,579
|
|
| 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 |
$ 143
|
|
| Due after One Year through Five Years, Yield |
2.29%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,557
|
|
| Due after Five Years though Ten Years, Yield |
2.41%
|
|
| Due after Ten Years, Amount |
$ 118,203
|
|
| Due after Ten Years, Yield |
3.32%
|
|
| Total, Amount |
$ 119,903
|
|
| Total, Yield |
3.31%
|
|
| 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 |
142
|
|
| Due after Five Years though Ten Years, Amount |
1,544
|
|
| Due after Ten Years, Amount |
116,492
|
|
| Debt securities carried at fair value |
118,178
|
|
| 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 |
$ 29
|
|
| Due after Five Years though Ten Years, Yield |
2.52%
|
|
| Due after Ten Years, Amount |
$ 5,382
|
|
| Due after Ten Years, Yield |
3.17%
|
|
| Total, Amount |
$ 5,411
|
|
| 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 |
5,351
|
|
| Debt securities carried at fair value |
5,379
|
|
| Commercial |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 135
|
|
| Due in One Year or Less, Yield |
1.78%
|
|
| Due after One Year through Five Years, Amount |
$ 2,498
|
|
| Due after One Year through Five Years, Yield |
2.37%
|
|
| Due after Five Years though Ten Years, Amount |
$ 10,931
|
|
| Due after Five Years though Ten Years, Yield |
2.54%
|
|
| Due after Ten Years, Amount |
$ 925
|
|
| Due after Ten Years, Yield |
3.01%
|
|
| Total, Amount |
$ 14,489
|
|
| Total, Yield |
2.53%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 135
|
|
| Due after One Year through Five Years, Amount |
2,484
|
|
| Due after Five Years though Ten Years, Amount |
10,832
|
|
| Due after Ten Years, Amount |
918
|
|
| Debt securities carried at fair value |
14,369
|
|
| 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 |
$ 3,227
|
|
| Due after Ten Years, Yield |
10.28%
|
|
| Total, Amount |
$ 3,240
|
|
| Total, Yield |
10.24%
|
|
| 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 |
0
|
|
| Due after Five Years though Ten Years, Amount |
27
|
|
| Due after Ten Years, Amount |
3,626
|
|
| Debt securities carried at fair value |
3,653
|
|
| 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 |
$ 739
|
|
| Due in One Year or Less, Yield |
1.15%
|
|
| Due after One Year through Five Years, Amount |
$ 29,186
|
|
| Due after One Year through Five Years, Yield |
1.52%
|
|
| Due after Five Years though Ten Years, Amount |
$ 31,517
|
|
| Due after Five Years though Ten Years, Yield |
2.44%
|
|
| Due after Ten Years, Amount |
$ 19
|
|
| Due after Ten Years, Yield |
2.53%
|
|
| Total, Amount |
$ 61,461
|
|
| Total, Yield |
1.98%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 738
|
|
| Due after One Year through Five Years, Amount |
28,583
|
|
| Due after Five Years though Ten Years, Amount |
31,684
|
|
| Due after Ten Years, Amount |
19
|
|
| Debt securities carried at fair value |
61,024
|
|
| Non-U.S. securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 17,607
|
|
| Due in One Year or Less, Yield |
1.00%
|
|
| Due after One Year through Five Years, Amount |
$ 701
|
|
| Due after One Year through Five Years, Yield |
2.62%
|
|
| Due after Five Years though Ten Years, Amount |
$ 17
|
|
| Due after Five Years though Ten Years, Yield |
4.16%
|
|
| Due after Ten Years, Amount |
$ 114
|
|
| Due after Ten Years, Yield |
6.63%
|
|
| Total, Amount |
$ 18,439
|
|
| Total, Yield |
1.10%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 17,604
|
|
| Due after One Year through Five Years, Amount |
712
|
|
| Due after Five Years though Ten Years, Amount |
17
|
|
| Due after Ten Years, Amount |
118
|
|
| Debt securities carried at fair value |
18,451
|
|
| 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 |
$ 701
|
|
| Due in One Year or Less, Yield |
3.66%
|
|
| Due after One Year through Five Years, Amount |
$ 1,944
|
|
| Due after One Year through Five Years, Yield |
3.55%
|
|
| Due after Five Years though Ten Years, Amount |
$ 646
|
|
| Due after Five Years though Ten Years, Yield |
3.14%
|
|
| Due after Ten Years, Amount |
$ 84
|
|
| Due after Ten Years, Yield |
5.91%
|
|
| Total, Amount |
$ 3,375
|
|
| Total, Yield |
3.55%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 703
|
|
| Due after One Year through Five Years, Amount |
1,967
|
|
| Due after Five Years though Ten Years, Amount |
681
|
|
| Due after Ten Years, Amount |
85
|
|
| Debt securities carried at fair value |
3,436
|
|
| Total taxable securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,182
|
|
| Due in One Year or Less, Yield |
1.11%
|
|
| Due after One Year through Five Years, Amount |
$ 34,472
|
|
| Due after One Year through Five Years, Yield |
1.72%
|
|
| Due after Five Years though Ten Years, Amount |
$ 44,710
|
|
| Due after Five Years though Ten Years, Yield |
2.47%
|
|
| Due after Ten Years, Amount |
$ 127,954
|
|
| Due after Ten Years, Yield |
3.49%
|
|
| Total, Amount |
$ 226,318
|
|
| Total, Yield |
2.81%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,180
|
|
| Due after One Year through Five Years, Amount |
33,888
|
|
| Due after Five Years though Ten Years, Amount |
44,813
|
|
| Due after Ten Years, Amount |
126,609
|
|
| Debt securities carried at fair value |
224,490
|
|
| Tax-exempt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 786
|
|
| Due in One Year or Less, Yield |
2.55%
|
|
| Due after One Year through Five Years, Amount |
$ 7,353
|
|
| Due after One Year through Five Years, Yield |
2.43%
|
|
| Due after Five Years though Ten Years, Amount |
$ 6,207
|
|
| Due after Five Years though Ten Years, Yield |
2.37%
|
|
| Due after Ten Years, Amount |
$ 3,014
|
|
| Due after Ten Years, Yield |
1.97%
|
|
| Total, Amount |
$ 17,360
|
|
| Total, Yield |
2.34%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 786
|
|
| Due after One Year through Five Years, Amount |
7,370
|
|
| Due after Five Years though Ten Years, Amount |
6,285
|
|
| Due after Ten Years, Amount |
3,025
|
|
| Debt securities carried at fair value |
17,466
|
|
| Debt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,968
|
|
| Due in One Year or Less, Yield |
1.16%
|
|
| Due after One Year through Five Years, Amount |
$ 41,825
|
|
| Due after One Year through Five Years, Yield |
1.85%
|
|
| Due after Five Years though Ten Years, Amount |
$ 50,917
|
|
| Due after Five Years though Ten Years, Yield |
2.46%
|
|
| Due after Ten Years, Amount |
$ 130,968
|
|
| Due after Ten Years, Yield |
3.46%
|
|
| Total, Amount |
$ 243,678
|
|
| Total, Yield |
2.78%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,966
|
|
| Due after One Year through Five Years, Amount |
41,258
|
|
| Due after Five Years though Ten Years, Amount |
51,098
|
|
| Due after Ten Years, Amount |
129,634
|
|
| Debt securities carried at fair value |
$ 241,956
|
|