Securities - Expected Maturity (Details) - USD ($)
$ in Millions |
Sep. 30, 2015 |
Dec. 31, 2014 |
| Amortized cost of HTM debt securities |
|
|
| 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 |
$ 21,720
|
|
| Due after One Year through Five Years, Yield |
2.30%
|
|
| Due after Five Years through Ten Years, Amount |
$ 44,457
|
|
| Due after Five Years though Ten Years, Yield |
2.40%
|
|
| Due after Ten Years, Amount |
$ 396
|
|
| Due after Ten Years, Yield |
3.34%
|
|
| Amortized Cost |
$ 66,573
|
$ 59,766
|
| Total, Yield |
2.37%
|
|
| Debt securities carried at fair value |
|
|
| Total, Amount |
$ 325,078
|
320,695
|
| Fair value of HTM debt securities |
|
|
| Due in One Year or Less, Amount |
0
|
|
| Due after One Year through Five Years, Amount |
21,874
|
|
| Due after Five Years though Ten Years, Amount |
44,201
|
|
| Due after Ten Years, Amount |
405
|
|
| Total, Amount |
66,480
|
$ 59,641
|
| Agency |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 40
|
|
| Due in One Year or Less, Yield |
4.40%
|
|
| Due after One Year through Five Years, Amount |
$ 36,815
|
|
| Due after One Year through Five Years, Yield |
2.40%
|
|
| Due after Five Years though Ten Years, Amount |
$ 172,124
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 6,048
|
|
| Due after Ten Years, Yield |
3.10%
|
|
| Total, Amount |
$ 215,027
|
|
| Total, Yield |
2.74%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 41
|
|
| Due after One Year through Five Years, Amount |
37,238
|
|
| Due after Five Years though Ten Years, Amount |
172,932
|
|
| Due after Ten Years, Amount |
6,052
|
|
| Total, Amount |
216,263
|
|
| Agency-collateralized mortgage obligations |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 302
|
|
| Due in One Year or Less, Yield |
0.90%
|
|
| Due after One Year through Five Years, Amount |
$ 6,931
|
|
| Due after One Year through Five Years, Yield |
2.50%
|
|
| Due after Five Years though Ten Years, Amount |
$ 4,608
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 1
|
|
| Due after Ten Years, Yield |
0.70%
|
|
| Total, Amount |
$ 11,842
|
|
| Total, Yield |
2.58%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 303
|
|
| Due after One Year through Five Years, Amount |
7,042
|
|
| Due after Five Years though Ten Years, Amount |
4,736
|
|
| Due after Ten Years, Amount |
1
|
|
| Total, Amount |
12,082
|
|
| Non-agency residential |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 339
|
|
| Due in One Year or Less, Yield |
4.60%
|
|
| Due after One Year through Five Years, Amount |
$ 1,403
|
|
| Due after One Year through Five Years, Yield |
4.89%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,287
|
|
| Due after Five Years though Ten Years, Yield |
4.49%
|
|
| Due after Ten Years, Amount |
$ 4,036
|
|
| Due after Ten Years, Yield |
7.86%
|
|
| Total, Amount |
$ 7,065
|
|
| Total, Yield |
6.49%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 372
|
|
| Due after One Year through Five Years, Amount |
1,394
|
|
| Due after Five Years though Ten Years, Amount |
1,385
|
|
| Due after Ten Years, Amount |
4,066
|
|
| Total, Amount |
7,217
|
|
| Commercial |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 73
|
|
| Due in One Year or Less, Yield |
6.86%
|
|
| Due after One Year through Five Years, Amount |
$ 620
|
|
| Due after One Year through Five Years, Yield |
1.90%
|
|
| Due after Five Years though Ten Years, Amount |
$ 4,729
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 5,422
|
|
| Total, Yield |
2.75%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 73
|
|
| Due after One Year through Five Years, Amount |
629
|
|
| Due after Five Years though Ten Years, Amount |
4,828
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
5,530
|
|
| Total mortgage-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 754
|
|
| Due in One Year or Less, Yield |
3.33%
|
|
| Due after One Year through Five Years, Amount |
$ 45,769
|
|
| Due after One Year through Five Years, Yield |
2.49%
|
|
| Due after Five Years though Ten Years, Amount |
$ 182,748
|
|
| Due after Five Years though Ten Years, Yield |
2.81%
|
|
| Due after Ten Years, Amount |
$ 10,085
|
|
| Due after Ten Years, Yield |
5.00%
|
|
| Total, Amount |
$ 239,356
|
|
| Total, Yield |
2.84%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 789
|
|
| Due after One Year through Five Years, Amount |
46,303
|
|
| Due after Five Years though Ten Years, Amount |
183,881
|
|
| Due after Ten Years, Amount |
10,119
|
|
| Total, Amount |
241,092
|
|
| U.S. Treasury and agency securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 600
|
|
| Due in One Year or Less, Yield |
0.25%
|
|
| Due after One Year through Five Years, Amount |
$ 36,006
|
|
| Due after One Year through Five Years, Yield |
1.60%
|
|
| Due after Five Years though Ten Years, Amount |
$ 2,814
|
|
| Due after Five Years though Ten Years, Yield |
2.59%
|
|
| Due after Ten Years, Amount |
$ 2
|
|
| Due after Ten Years, Yield |
4.57%
|
|
| Total, Amount |
$ 39,422
|
|
| Total, Yield |
1.65%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 601
|
|
| Due after One Year through Five Years, Amount |
36,626
|
|
| Due after Five Years though Ten Years, Amount |
2,902
|
|
| Due after Ten Years, Amount |
2
|
|
| Total, Amount |
40,131
|
|
| Non-U.S. securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 20,056
|
|
| Due in One Year or Less, Yield |
0.65%
|
|
| Due after One Year through Five Years, Amount |
$ 1,814
|
|
| Due after One Year through Five Years, Yield |
2.99%
|
|
| Due after Five Years though Ten Years, Amount |
$ 6
|
|
| Due after Five Years though Ten Years, Yield |
2.85%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 21,876
|
|
| Total, Yield |
0.86%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 20,008
|
|
| Due after One Year through Five Years, Amount |
1,890
|
|
| Due after Five Years though Ten Years, Amount |
6
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
21,904
|
|
| Corporate/Agency bonds |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 54
|
|
| Due in One Year or Less, Yield |
3.76%
|
|
| Due after One Year through Five Years, Amount |
$ 68
|
|
| Due after One Year through Five Years, Yield |
3.75%
|
|
| Due after Five Years though Ten Years, Amount |
$ 106
|
|
| Due after Five Years though Ten Years, Yield |
3.48%
|
|
| Due after Ten Years, Amount |
$ 3
|
|
| Due after Ten Years, Yield |
5.60%
|
|
| Total, Amount |
$ 231
|
|
| Total, Yield |
3.65%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 54
|
|
| Due after One Year through Five Years, Amount |
67
|
|
| Due after Five Years though Ten Years, Amount |
111
|
|
| Due after Ten Years, Amount |
2
|
|
| Total, Amount |
234
|
|
| Other taxable securities, substantially all asset-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2,601
|
|
| Due in One Year or Less, Yield |
1.00%
|
|
| Due after One Year through Five Years, Amount |
$ 4,675
|
|
| Due after One Year through Five Years, Yield |
1.28%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,998
|
|
| Due after Five Years though Ten Years, Yield |
2.68%
|
|
| Due after Ten Years, Amount |
$ 774
|
|
| Due after Ten Years, Yield |
3.72%
|
|
| Total, Amount |
$ 10,048
|
|
| Total, Yield |
1.62%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2,593
|
|
| Due after One Year through Five Years, Amount |
4,649
|
|
| Due after Five Years though Ten Years, Amount |
2,012
|
|
| Due after Ten Years, Amount |
773
|
|
| Total, Amount |
10,027
|
|
| Total taxable securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,065
|
|
| Due in One Year or Less, Yield |
0.78%
|
|
| Due after One Year through Five Years, Amount |
$ 88,332
|
|
| Due after One Year through Five Years, Yield |
2.07%
|
|
| Due after Five Years though Ten Years, Amount |
$ 187,672
|
|
| Due after Five Years though Ten Years, Yield |
2.81%
|
|
| Due after Ten Years, Amount |
$ 10,864
|
|
| Due after Ten Years, Yield |
4.91%
|
|
| Total, Amount |
$ 310,933
|
|
| Total, Yield |
2.52%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,045
|
|
| Due after One Year through Five Years, Amount |
89,535
|
|
| Due after Five Years though Ten Years, Amount |
188,912
|
|
| Due after Ten Years, Amount |
10,896
|
|
| Total, Amount |
313,388
|
|
| Tax-exempt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 557
|
|
| Due in One Year or Less, Yield |
0.63%
|
|
| Due after One Year through Five Years, Amount |
$ 3,138
|
|
| Due after One Year through Five Years, Yield |
1.34%
|
|
| Due after Five Years though Ten Years, Amount |
$ 3,446
|
|
| Due after Five Years though Ten Years, Yield |
1.49%
|
|
| Due after Ten Years, Amount |
$ 4,544
|
|
| Due after Ten Years, Yield |
0.96%
|
|
| Total, Amount |
$ 11,685
|
|
| Total, Yield |
1.19%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 557
|
|
| Due after One Year through Five Years, Amount |
3,143
|
|
| Due after Five Years though Ten Years, Amount |
3,448
|
|
| Due after Ten Years, Amount |
4,542
|
|
| Total, Amount |
11,690
|
|
| Debt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,622
|
|
| Due in One Year or Less, Yield |
0.78%
|
|
| Due after One Year through Five Years, Amount |
$ 91,470
|
|
| Due after One Year through Five Years, Yield |
2.05%
|
|
| Due after Five Years though Ten Years, Amount |
$ 191,118
|
|
| Due after Five Years though Ten Years, Yield |
2.79%
|
|
| Due after Ten Years, Amount |
$ 15,408
|
|
| Due after Ten Years, Yield |
3.68%
|
|
| Total, Amount |
$ 322,618
|
|
| Total, Yield |
2.47%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,602
|
|
| Due after One Year through Five Years, Amount |
92,678
|
|
| Due after Five Years though Ten Years, Amount |
192,360
|
|
| Due after Ten Years, Amount |
15,438
|
|
| Total, Amount |
$ 325,078
|
|