Securities - Expected Maturity (Details) - USD ($)
$ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
| 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 |
$ 16
|
|
| Due after One Year through Five Years, Yield |
3.54%
|
|
| Due after Five Years through Ten Years, Amount |
$ 904
|
|
| Due after Five Years though Ten Years, Yield |
2.40%
|
|
| Due after Ten Years, Amount |
$ 111,489
|
|
| Due after Ten Years, Yield |
3.06%
|
|
| Amortized Cost |
$ 112,409
|
$ 84,508
|
| Total, Yield |
3.06%
|
|
| Debt securities carried at fair value |
|
|
| Debt securities carried at fair value |
$ 322,505
|
322,380
|
| Fair value of HTM debt securities |
|
|
| Due in One Year or Less, Amount |
0
|
|
| Due after One Year through Five Years, Amount |
16
|
|
| Due after Five Years though Ten Years, Amount |
921
|
|
| Due after Ten Years, Amount |
113,028
|
|
| Total, Amount |
113,965
|
$ 84,046
|
| Agency |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2
|
|
| Due in One Year or Less, Yield |
5.24%
|
|
| Due after One Year through Five Years, Amount |
$ 79
|
|
| Due after One Year through Five Years, Yield |
2.99%
|
|
| Due after Five Years though Ten Years, Amount |
$ 405
|
|
| Due after Five Years though Ten Years, Yield |
2.58%
|
|
| Due after Ten Years, Amount |
$ 196,322
|
|
| Due after Ten Years, Yield |
3.26%
|
|
| Total, Amount |
$ 196,808
|
|
| Total, Yield |
3.25%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2
|
|
| Due after One Year through Five Years, Amount |
54
|
|
| Due after Five Years though Ten Years, Amount |
414
|
|
| Due after Ten Years, Amount |
200,581
|
|
| Debt securities carried at fair value |
201,051
|
|
| Agency-collateralized mortgage obligations |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| 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 |
$ 0
|
|
| Due after Five Years though Ten Years, Yield |
0.00%
|
|
| Due after Ten Years, Amount |
$ 8,867
|
|
| Due after Ten Years, Yield |
3.19%
|
|
| Total, Amount |
$ 8,867
|
|
| Total, Yield |
3.19%
|
|
| Debt securities carried at fair value |
|
|
| 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 |
0
|
|
| Due after Ten Years, Amount |
9,087
|
|
| Debt securities carried at fair value |
9,087
|
|
| Commercial |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 48
|
|
| Due in One Year or Less, Yield |
8.56%
|
|
| Due after One Year through Five Years, Amount |
$ 499
|
|
| Due after One Year through Five Years, Yield |
1.89%
|
|
| Due after Five Years though Ten Years, Amount |
$ 10,891
|
|
| Due after Five Years though Ten Years, Yield |
2.46%
|
|
| Due after Ten Years, Amount |
$ 1,117
|
|
| Due after Ten Years, Yield |
2.22%
|
|
| Total, Amount |
$ 12,555
|
|
| Total, Yield |
2.44%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 48
|
|
| Due after One Year through Five Years, Amount |
506
|
|
| Due after Five Years though Ten Years, Amount |
11,257
|
|
| Due after Ten Years, Amount |
1,125
|
|
| Debt securities carried at fair value |
12,936
|
|
| Non-agency residential |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| 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 |
$ 0
|
|
| Due after Five Years though Ten Years, Yield |
0.00%
|
|
| Due after Ten Years, Amount |
$ 4,767
|
|
| Due after Ten Years, Yield |
8.15%
|
|
| Total, Amount |
$ 4,767
|
|
| Total, Yield |
8.15%
|
|
| Debt securities carried at fair value |
|
|
| 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 |
0
|
|
| Due after Ten Years, Amount |
4,811
|
|
| Debt securities carried at fair value |
4,811
|
|
| Total mortgage-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 50
|
|
| Due in One Year or Less, Yield |
8.43%
|
|
| Due after One Year through Five Years, Amount |
$ 578
|
|
| Due after One Year through Five Years, Yield |
2.04%
|
|
| Due after Five Years though Ten Years, Amount |
$ 11,296
|
|
| Due after Five Years though Ten Years, Yield |
2.46%
|
|
| Due after Ten Years, Amount |
$ 211,073
|
|
| Due after Ten Years, Yield |
3.36%
|
|
| Total, Amount |
$ 222,997
|
|
| Total, Yield |
3.31%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 50
|
|
| Due after One Year through Five Years, Amount |
560
|
|
| Due after Five Years though Ten Years, Amount |
11,671
|
|
| Due after Ten Years, Amount |
215,604
|
|
| Debt securities carried at fair value |
227,885
|
|
| U.S. Treasury and agency securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 534
|
|
| Due in One Year or Less, Yield |
0.31%
|
|
| Due after One Year through Five Years, Amount |
$ 30,312
|
|
| Due after One Year through Five Years, Yield |
1.30%
|
|
| Due after Five Years though Ten Years, Amount |
$ 13,862
|
|
| Due after Five Years though Ten Years, Yield |
1.51%
|
|
| Due after Ten Years, Amount |
$ 217
|
|
| Due after Ten Years, Yield |
5.46%
|
|
| Total, Amount |
$ 44,925
|
|
| Total, Yield |
1.37%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 535
|
|
| Due after One Year through Five Years, Amount |
30,565
|
|
| Due after Five Years though Ten Years, Amount |
13,947
|
|
| Due after Ten Years, Amount |
237
|
|
| Debt securities carried at fair value |
45,284
|
|
| Non-U.S. securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 22,106
|
|
| Due in One Year or Less, Yield |
0.64%
|
|
| Due after One Year through Five Years, Amount |
$ 1,035
|
|
| Due after One Year through Five Years, Yield |
1.89%
|
|
| Due after Five Years though Ten Years, Amount |
$ 262
|
|
| Due after Five Years though Ten Years, Yield |
1.43%
|
|
| Due after Ten Years, Amount |
$ 264
|
|
| Due after Ten Years, Yield |
6.56%
|
|
| Total, Amount |
$ 23,667
|
|
| Total, Yield |
0.77%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 22,113
|
|
| Due after One Year through Five Years, Amount |
1,040
|
|
| Due after Five Years though Ten Years, Amount |
264
|
|
| Due after Ten Years, Amount |
273
|
|
| Debt securities carried at fair value |
23,690
|
|
| Other taxable securities, substantially all asset-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 1,818
|
|
| Due in One Year or Less, Yield |
1.40%
|
|
| Due after One Year through Five Years, Amount |
$ 4,021
|
|
| Due after One Year through Five Years, Yield |
1.65%
|
|
| Due after Five Years though Ten Years, Amount |
$ 2,447
|
|
| Due after Five Years though Ten Years, Yield |
2.77%
|
|
| Due after Ten Years, Amount |
$ 1,343
|
|
| Due after Ten Years, Yield |
3.30%
|
|
| Total, Amount |
$ 9,629
|
|
| Total, Yield |
2.12%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 1,816
|
|
| Due after One Year through Five Years, Amount |
3,982
|
|
| Due after Five Years though Ten Years, Amount |
2,496
|
|
| Due after Ten Years, Amount |
1,368
|
|
| Debt securities carried at fair value |
9,662
|
|
| Total taxable securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,508
|
|
| Due in One Year or Less, Yield |
0.71%
|
|
| Due after One Year through Five Years, Amount |
$ 35,946
|
|
| Due after One Year through Five Years, Yield |
1.37%
|
|
| Due after Five Years though Ten Years, Amount |
$ 27,867
|
|
| Due after Five Years though Ten Years, Yield |
2.01%
|
|
| Due after Ten Years, Amount |
$ 212,897
|
|
| Due after Ten Years, Yield |
3.37%
|
|
| Total, Amount |
$ 301,218
|
|
| Total, Yield |
2.78%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,514
|
|
| Due after One Year through Five Years, Amount |
36,147
|
|
| Due after Five Years though Ten Years, Amount |
28,378
|
|
| Due after Ten Years, Amount |
217,482
|
|
| Debt securities carried at fair value |
306,521
|
|
| Tax-exempt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 1,569
|
|
| Due in One Year or Less, Yield |
0.99%
|
|
| Due after One Year through Five Years, Amount |
$ 6,025
|
|
| Due after One Year through Five Years, Yield |
1.25%
|
|
| Due after Five Years though Ten Years, Amount |
$ 6,402
|
|
| Due after Five Years though Ten Years, Yield |
1.43%
|
|
| Due after Ten Years, Amount |
$ 1,921
|
|
| Due after Ten Years, Yield |
1.35%
|
|
| Total, Amount |
$ 15,917
|
|
| Total, Yield |
1.31%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 1,570
|
|
| Due after One Year through Five Years, Amount |
6,033
|
|
| Due after Five Years though Ten Years, Amount |
6,473
|
|
| Due after Ten Years, Amount |
1,908
|
|
| Debt securities carried at fair value |
15,984
|
|
| Debt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 26,077
|
|
| Due in One Year or Less, Yield |
0.73%
|
|
| Due after One Year through Five Years, Amount |
$ 41,971
|
|
| Due after One Year through Five Years, Yield |
1.35%
|
|
| Due after Five Years though Ten Years, Amount |
$ 34,269
|
|
| Due after Five Years though Ten Years, Yield |
1.90%
|
|
| Due after Ten Years, Amount |
$ 214,818
|
|
| Due after Ten Years, Yield |
3.35%
|
|
| Total, Amount |
$ 317,135
|
|
| Total, Yield |
2.71%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 26,084
|
|
| Due after One Year through Five Years, Amount |
42,180
|
|
| Due after Five Years though Ten Years, Amount |
34,851
|
|
| Due after Ten Years, Amount |
219,390
|
|
| Debt securities carried at fair value |
$ 322,505
|
|