Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
| Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 354
|
|
| Due in One Year or Less, Yield |
3.96%
|
|
| Due after One Year through Five Years, Amount |
$ 50
|
|
| Due after One Year through Five Years, Yield |
3.80%
|
|
| Due after Five Years through Ten Years, Amount |
$ 1,112
|
|
| Due after Five Years though Ten Years, Yield |
2.53%
|
|
| Due after Ten Years, Amount |
$ 188,736
|
|
| Due after Ten Years, Yield |
3.24%
|
|
| Amortized Cost |
$ 190,252
|
$ 203,652
|
| Total, Yield |
3.24%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Debt securities carried at fair value |
$ 254,342
|
238,101
|
| Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Due in One Year or Less, Amount |
354
|
|
| Due after One Year through Five Years, Amount |
50
|
|
| Due after Five Years though Ten Years, Amount |
1,139
|
|
| Due after Ten Years, Amount |
192,731
|
|
| Debt Securities, Held-to-maturity, Fair Value |
194,274
|
$ 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 |
$ 3,446
|
|
| Due after One Year through Five Years, Yield |
2.28%
|
|
| Due after Five Years though Ten Years, Amount |
$ 11,854
|
|
| Due after Five Years though Ten Years, Yield |
2.57%
|
|
| Due after Ten Years, Amount |
$ 140,960
|
|
| Due after Ten Years, Yield |
3.44%
|
|
| Total, Amount |
$ 156,260
|
|
| Total, Yield |
3.35%
|
|
| 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 |
3,484
|
|
| Due after Five Years though Ten Years, Amount |
12,168
|
|
| Due after Ten Years, Amount |
142,435
|
|
| Debt securities carried at fair value |
158,087
|
|
| 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 |
$ 120
|
|
| Due after One Year through Five Years, Yield |
2.37%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,715
|
|
| Due after Five Years though Ten Years, Yield |
2.42%
|
|
| Due after Ten Years, Amount |
$ 132,139
|
|
| Due after Ten Years, Yield |
3.29%
|
|
| Total, Amount |
$ 133,974
|
|
| Total, Yield |
3.28%
|
|
| 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 |
120
|
|
| Due after Five Years though Ten Years, Amount |
1,719
|
|
| Due after Ten Years, Amount |
133,111
|
|
| Debt securities carried at fair value |
134,950
|
|
| 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 |
2.56%
|
|
| Due after Ten Years, Amount |
$ 4,850
|
|
| Due after Ten Years, Yield |
3.17%
|
|
| Total, Amount |
$ 4,877
|
|
| 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 |
4,934
|
|
| Debt securities carried at fair value |
4,962
|
|
| 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 |
$ 3,326
|
|
| Due after One Year through Five Years, Yield |
2.28%
|
|
| Due after Five Years though Ten Years, Amount |
$ 10,100
|
|
| Due after Five Years though Ten Years, Yield |
2.60%
|
|
| Due after Ten Years, Amount |
$ 888
|
|
| Due after Ten Years, Yield |
2.99%
|
|
| Total, Amount |
$ 14,314
|
|
| Total, Yield |
2.55%
|
|
| 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 |
3,364
|
|
| Due after Five Years though Ten Years, Amount |
10,395
|
|
| Due after Ten Years, Amount |
931
|
|
| Debt securities carried at fair value |
14,690
|
|
| 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 |
$ 3,083
|
|
| Due after Ten Years, Yield |
10.49%
|
|
| Total, Amount |
$ 3,095
|
|
| 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 |
26
|
|
| Due after Ten Years, Amount |
3,459
|
|
| Debt securities carried at fair value |
3,485
|
|
| 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 |
$ 482
|
|
| Due in One Year or Less, Yield |
0.33%
|
|
| Due after One Year through Five Years, Amount |
$ 36,446
|
|
| Due after One Year through Five Years, Yield |
1.65%
|
|
| Due after Five Years though Ten Years, Amount |
$ 18,803
|
|
| Due after Five Years though Ten Years, Yield |
2.50%
|
|
| Due after Ten Years, Amount |
$ 18
|
|
| Due after Ten Years, Yield |
2.54%
|
|
| Total, Amount |
$ 55,749
|
|
| Total, Yield |
1.92%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 483
|
|
| Due after One Year through Five Years, Amount |
36,629
|
|
| Due after Five Years though Ten Years, Amount |
19,820
|
|
| Due after Ten Years, Amount |
18
|
|
| Debt securities carried at fair value |
56,950
|
|
| Non-U.S. securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,097
|
|
| Due in One Year or Less, Yield |
1.07%
|
|
| Due after One Year through Five Years, Amount |
$ 762
|
|
| Due after One Year through Five Years, Yield |
1.50%
|
|
| Due after Five Years though Ten Years, Amount |
$ 11
|
|
| Due after Five Years though Ten Years, Yield |
4.38%
|
|
| Due after Ten Years, Amount |
$ 101
|
|
| Due after Ten Years, Yield |
6.24%
|
|
| Total, Amount |
$ 18,971
|
|
| Total, Yield |
1.12%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,099
|
|
| Due after One Year through Five Years, Amount |
772
|
|
| Due after Five Years though Ten Years, Amount |
12
|
|
| Due after Ten Years, Amount |
104
|
|
| Debt securities carried at fair value |
18,987
|
|
| 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 |
$ 520
|
|
| Due in One Year or Less, Yield |
3.36%
|
|
| Due after One Year through Five Years, Amount |
$ 2,175
|
|
| Due after One Year through Five Years, Yield |
3.20%
|
|
| Due after Five Years though Ten Years, Amount |
$ 436
|
|
| Due after Five Years though Ten Years, Yield |
3.29%
|
|
| Due after Ten Years, Amount |
$ 675
|
|
| Due after Ten Years, Yield |
3.61%
|
|
| Total, Amount |
$ 3,806
|
|
| Total, Yield |
3.31%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 527
|
|
| Due after One Year through Five Years, Amount |
2,214
|
|
| Due after Five Years though Ten Years, Amount |
463
|
|
| Due after Ten Years, Amount |
682
|
|
| Debt securities carried at fair value |
3,886
|
|
| Total taxable securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,099
|
|
| Due in One Year or Less, Yield |
1.12%
|
|
| Due after One Year through Five Years, Amount |
$ 42,829
|
|
| Due after One Year through Five Years, Yield |
1.78%
|
|
| Due after Five Years though Ten Years, Amount |
$ 31,104
|
|
| Due after Five Years though Ten Years, Yield |
2.54%
|
|
| Due after Ten Years, Amount |
$ 141,754
|
|
| Due after Ten Years, Yield |
3.44%
|
|
| Total, Amount |
$ 234,786
|
|
| Total, Yield |
2.83%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,109
|
|
| Due after One Year through Five Years, Amount |
43,099
|
|
| Due after Five Years though Ten Years, Amount |
32,463
|
|
| Due after Ten Years, Amount |
143,239
|
|
| Debt securities carried at fair value |
237,910
|
|
| Tax-exempt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 724
|
|
| Due in One Year or Less, Yield |
1.98%
|
|
| Due after One Year through Five Years, Amount |
$ 7,169
|
|
| Due after One Year through Five Years, Yield |
2.22%
|
|
| Due after Five Years though Ten Years, Amount |
$ 5,483
|
|
| Due after Five Years though Ten Years, Yield |
2.20%
|
|
| Due after Ten Years, Amount |
$ 2,887
|
|
| Due after Ten Years, Yield |
2.33%
|
|
| Total, Amount |
$ 16,263
|
|
| Total, Yield |
2.23%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 724
|
|
| Due after One Year through Five Years, Amount |
7,186
|
|
| Due after Five Years though Ten Years, Amount |
5,608
|
|
| Due after Ten Years, Amount |
2,914
|
|
| Debt securities carried at fair value |
16,432
|
|
| Debt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,823
|
|
| Due in One Year or Less, Yield |
1.16%
|
|
| Due after One Year through Five Years, Amount |
$ 49,998
|
|
| Due after One Year through Five Years, Yield |
1.84%
|
|
| Due after Five Years though Ten Years, Amount |
$ 36,587
|
|
| Due after Five Years though Ten Years, Yield |
2.49%
|
|
| Due after Ten Years, Amount |
$ 144,641
|
|
| Due after Ten Years, Yield |
3.42%
|
|
| Total, Amount |
$ 251,049
|
|
| Total, Yield |
2.79%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 19,833
|
|
| Due after One Year through Five Years, Amount |
50,285
|
|
| Due after Five Years though Ten Years, Amount |
38,071
|
|
| Due after Ten Years, Amount |
146,153
|
|
| Debt securities carried at fair value |
$ 254,342
|
|