Securities - Expected Maturity (Details) - USD ($)
$ in Millions |
Jun. 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 |
$ 82,803
|
|
| Due after One Year through Five Years, Yield |
2.06%
|
|
| Due after Five Years through Ten Years, Amount |
$ 19,380
|
|
| Due after Five Years though Ten Years, Yield |
2.67%
|
|
| Due after Ten Years, Amount |
$ 96
|
|
| Due after Ten Years, Yield |
3.49%
|
|
| Amortized Cost |
$ 102,279
|
$ 84,625
|
| Total, Yield |
2.18%
|
|
| Debt securities carried at fair value |
|
|
| Total, Amount |
$ 309,670
|
322,380
|
| Fair value of HTM debt securities |
|
|
| Due in One Year or Less, Amount |
0
|
|
| Due after One Year through Five Years, Amount |
84,451
|
|
| Due after Five Years though Ten Years, Amount |
19,829
|
|
| Due after Ten Years, Amount |
95
|
|
| Total, Amount |
104,375
|
$ 84,046
|
| Agency |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 45
|
|
| Due in One Year or Less, Yield |
4.41%
|
|
| Due after One Year through Five Years, Amount |
$ 180,446
|
|
| Due after One Year through Five Years, Yield |
2.24%
|
|
| Due after Five Years though Ten Years, Amount |
$ 23,189
|
|
| Due after Five Years though Ten Years, Yield |
2.67%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 203,680
|
|
| Total, Yield |
2.29%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 46
|
|
| Due after One Year through Five Years, Amount |
184,891
|
|
| Due after Five Years though Ten Years, Amount |
23,751
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
208,688
|
|
| Agency-collateralized mortgage obligations |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 97
|
|
| Due in One Year or Less, Yield |
1.24%
|
|
| Due after One Year through Five Years, Amount |
$ 8,475
|
|
| Due after One Year through Five Years, Yield |
2.47%
|
|
| Due after Five Years though Ten Years, Amount |
$ 884
|
|
| Due after Five Years though Ten Years, Yield |
2.72%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 9,456
|
|
| Total, Yield |
2.48%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 98
|
|
| Due after One Year through Five Years, Amount |
8,743
|
|
| Due after Five Years though Ten Years, Amount |
926
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
9,767
|
|
| Commercial |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 87
|
|
| Due in One Year or Less, Yield |
6.02%
|
|
| Due after One Year through Five Years, Amount |
$ 1,138
|
|
| Due after One Year through Five Years, Yield |
2.04%
|
|
| Due after Five Years though Ten Years, Amount |
$ 9,858
|
|
| Due after Five Years though Ten Years, Yield |
2.36%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 11,083
|
|
| Total, Yield |
2.36%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 87
|
|
| Due after One Year through Five Years, Amount |
1,169
|
|
| Due after Five Years though Ten Years, Amount |
10,141
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
11,397
|
|
| Non-agency residential |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 178
|
|
| Due in One Year or Less, Yield |
5.66%
|
|
| Due after One Year through Five Years, Amount |
$ 741
|
|
| Due after One Year through Five Years, Yield |
5.63%
|
|
| Due after Five Years though Ten Years, Amount |
$ 840
|
|
| Due after Five Years though Ten Years, Yield |
5.64%
|
|
| Due after Ten Years, Amount |
$ 3,588
|
|
| Due after Ten Years, Yield |
8.48%
|
|
| Total, Amount |
$ 5,347
|
|
| Total, Yield |
7.55%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 222
|
|
| Due after One Year through Five Years, Amount |
720
|
|
| Due after Five Years though Ten Years, Amount |
922
|
|
| Due after Ten Years, Amount |
3,483
|
|
| Total, Amount |
5,347
|
|
| Total mortgage-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 407
|
|
| Due in One Year or Less, Yield |
4.54%
|
|
| Due after One Year through Five Years, Amount |
$ 190,800
|
|
| Due after One Year through Five Years, Yield |
2.26%
|
|
| Due after Five Years though Ten Years, Amount |
$ 34,771
|
|
| Due after Five Years though Ten Years, Yield |
2.66%
|
|
| Due after Ten Years, Amount |
$ 3,588
|
|
| Due after Ten Years, Yield |
8.48%
|
|
| Total, Amount |
$ 229,566
|
|
| Total, Yield |
2.42%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 453
|
|
| Due after One Year through Five Years, Amount |
195,523
|
|
| Due after Five Years though Ten Years, Amount |
35,740
|
|
| Due after Ten Years, Amount |
3,483
|
|
| Total, Amount |
235,199
|
|
| U.S. Treasury and agency securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 501
|
|
| Due in One Year or Less, Yield |
0.36%
|
|
| Due after One Year through Five Years, Amount |
$ 24,396
|
|
| Due after One Year through Five Years, Yield |
1.26%
|
|
| Due after Five Years though Ten Years, Amount |
$ 895
|
|
| Due after Five Years though Ten Years, Yield |
3.39%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 25,792
|
|
| Total, Yield |
1.32%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 502
|
|
| Due after One Year through Five Years, Amount |
24,699
|
|
| Due after Five Years though Ten Years, Amount |
942
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
26,143
|
|
| Non-U.S. securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 20,813
|
|
| Due in One Year or Less, Yield |
0.95%
|
|
| Due after One Year through Five Years, Amount |
$ 2,041
|
|
| Due after One Year through Five Years, Yield |
2.14%
|
|
| Due after Five Years though Ten Years, Amount |
$ 66
|
|
| Due after Five Years though Ten Years, Yield |
2.06%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 22,920
|
|
| Total, Yield |
1.06%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 20,824
|
|
| Due after One Year through Five Years, Amount |
2,053
|
|
| Due after Five Years though Ten Years, Amount |
66
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
22,943
|
|
| Other taxable securities, substantially all asset-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2,225
|
|
| Due in One Year or Less, Yield |
1.39%
|
|
| Due after One Year through Five Years, Amount |
$ 4,930
|
|
| Due after One Year through Five Years, Yield |
1.63%
|
|
| Due after Five Years though Ten Years, Amount |
$ 2,203
|
|
| Due after Five Years though Ten Years, Yield |
2.87%
|
|
| Due after Ten Years, Amount |
$ 704
|
|
| Due after Ten Years, Yield |
4.18%
|
|
| Total, Amount |
$ 10,062
|
|
| Total, Yield |
2.03%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2,226
|
|
| Due after One Year through Five Years, Amount |
4,856
|
|
| Due after Five Years though Ten Years, Amount |
2,254
|
|
| Due after Ten Years, Amount |
687
|
|
| Total, Amount |
10,023
|
|
| Total taxable securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 23,946
|
|
| Due in One Year or Less, Yield |
1.04%
|
|
| Due after One Year through Five Years, Amount |
$ 222,167
|
|
| Due after One Year through Five Years, Yield |
2.14%
|
|
| Due after Five Years though Ten Years, Amount |
$ 37,935
|
|
| Due after Five Years though Ten Years, Yield |
2.68%
|
|
| Due after Ten Years, Amount |
$ 4,292
|
|
| Due after Ten Years, Yield |
7.78%
|
|
| Total, Amount |
$ 288,340
|
|
| Total, Yield |
2.20%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 24,005
|
|
| Due after One Year through Five Years, Amount |
227,131
|
|
| Due after Five Years though Ten Years, Amount |
39,002
|
|
| Due after Ten Years, Amount |
4,170
|
|
| Total, Amount |
294,308
|
|
| Tax-exempt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 1,540
|
|
| Due in One Year or Less, Yield |
0.76%
|
|
| Due after One Year through Five Years, Amount |
$ 5,840
|
|
| Due after One Year through Five Years, Yield |
1.01%
|
|
| Due after Five Years though Ten Years, Amount |
$ 5,993
|
|
| Due after Five Years though Ten Years, Yield |
1.50%
|
|
| Due after Ten Years, Amount |
$ 1,908
|
|
| Due after Ten Years, Yield |
1.15%
|
|
| Total, Amount |
$ 15,281
|
|
| Total, Yield |
1.20%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 1,540
|
|
| Due after One Year through Five Years, Amount |
5,849
|
|
| Due after Five Years though Ten Years, Amount |
6,080
|
|
| Due after Ten Years, Amount |
1,893
|
|
| Total, Amount |
15,362
|
|
| Debt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 25,486
|
|
| Due in One Year or Less, Yield |
1.02%
|
|
| Due after One Year through Five Years, Amount |
$ 228,007
|
|
| Due after One Year through Five Years, Yield |
2.11%
|
|
| Due after Five Years though Ten Years, Amount |
$ 43,928
|
|
| Due after Five Years though Ten Years, Yield |
2.52%
|
|
| Due after Ten Years, Amount |
$ 6,200
|
|
| Due after Ten Years, Yield |
5.74%
|
|
| Total, Amount |
$ 303,621
|
|
| Total, Yield |
2.15%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 25,545
|
|
| Due after One Year through Five Years, Amount |
232,980
|
|
| Due after Five Years though Ten Years, Amount |
45,082
|
|
| Due after Ten Years, Amount |
6,063
|
|
| Total, Amount |
$ 309,670
|
|