Securities - Expected Maturity (Details) - USD ($)
$ in Millions |
Jun. 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 |
$ 11,629
|
|
| Due after One Year through Five Years, Yield |
2.30%
|
|
| Due after Five Years through Ten Years, Amount |
$ 46,652
|
|
| Due after Five Years though Ten Years, Yield |
2.40%
|
|
| Due after Ten Years, Amount |
$ 1,791
|
|
| Due after Ten Years, Yield |
2.94%
|
|
| Amortized Cost |
$ 60,072
|
$ 59,766
|
| Total, Yield |
2.40%
|
|
| Debt securities carried at fair value |
|
|
| Total, Amount |
$ 332,307
|
320,695
|
| Fair value of HTM debt securities |
|
|
| Due in One Year or Less, Amount |
0
|
|
| Due after One Year through Five Years, Amount |
11,567
|
|
| Due after Five Years though Ten Years, Amount |
45,827
|
|
| Due after Ten Years, Amount |
1,769
|
|
| Total, Amount |
59,163
|
$ 59,641
|
| U.S. Treasury and agency securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 572
|
|
| Due in One Year or Less, Yield |
0.23%
|
|
| Due after One Year through Five Years, Amount |
$ 51,424
|
|
| Due after One Year through Five Years, Yield |
1.60%
|
|
| Due after Five Years though Ten Years, Amount |
$ 5,701
|
|
| Due after Five Years though Ten Years, Yield |
2.20%
|
|
| Due after Ten Years, Amount |
$ 2
|
|
| Due after Ten Years, Yield |
4.60%
|
|
| Total, Amount |
$ 57,699
|
|
| Total, Yield |
1.69%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 572
|
|
| Due after One Year through Five Years, Amount |
52,001
|
|
| Due after Five Years though Ten Years, Amount |
5,769
|
|
| Due after Ten Years, Amount |
2
|
|
| Total, Amount |
58,344
|
|
| Agency |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 37
|
|
| Due in One Year or Less, Yield |
4.40%
|
|
| Due after One Year through Five Years, Amount |
$ 18,004
|
|
| Due after One Year through Five Years, Yield |
2.60%
|
|
| Due after Five Years though Ten Years, Amount |
$ 170,756
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 15,618
|
|
| Due after Ten Years, Yield |
2.90%
|
|
| Total, Amount |
$ 204,415
|
|
| Total, Yield |
2.80%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 38
|
|
| Due after One Year through Five Years, Amount |
18,277
|
|
| Due after Five Years though Ten Years, Amount |
169,457
|
|
| Due after Ten Years, Amount |
15,373
|
|
| Total, Amount |
203,145
|
|
| Agency-collateralized mortgage obligations |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 372
|
|
| Due in One Year or Less, Yield |
0.60%
|
|
| Due after One Year through Five Years, Amount |
$ 2,567
|
|
| Due after One Year through Five Years, Yield |
2.00%
|
|
| Due after Five Years though Ten Years, Amount |
$ 9,816
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 1
|
|
| Due after Ten Years, Yield |
0.60%
|
|
| Total, Amount |
$ 12,756
|
|
| Total, Yield |
2.60%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 373
|
|
| Due after One Year through Five Years, Amount |
2,566
|
|
| Due after Five Years though Ten Years, Amount |
10,000
|
|
| Due after Ten Years, Amount |
1
|
|
| Total, Amount |
12,940
|
|
| Non-agency residential |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 409
|
|
| Due in One Year or Less, Yield |
4.10%
|
|
| Due after One Year through Five Years, Amount |
$ 1,512
|
|
| Due after One Year through Five Years, Yield |
4.90%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,324
|
|
| Due after Five Years though Ten Years, Yield |
4.52%
|
|
| Due after Ten Years, Amount |
$ 4,188
|
|
| Due after Ten Years, Yield |
8.19%
|
|
| Total, Amount |
$ 7,433
|
|
| Total, Yield |
6.61%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 440
|
|
| Due after One Year through Five Years, Amount |
1,509
|
|
| Due after Five Years though Ten Years, Amount |
1,425
|
|
| Due after Ten Years, Amount |
4,299
|
|
| Total, Amount |
7,673
|
|
| 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 |
6.40%
|
|
| Due after One Year through Five Years, Amount |
$ 519
|
|
| Due after One Year through Five Years, Yield |
2.10%
|
|
| Due after Five Years though Ten Years, Amount |
$ 4,478
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 3
|
|
| Due after Ten Years, Yield |
2.83%
|
|
| Total, Amount |
$ 5,087
|
|
| Total, Yield |
2.76%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 88
|
|
| Due after One Year through Five Years, Amount |
526
|
|
| Due after Five Years though Ten Years, Amount |
4,493
|
|
| Due after Ten Years, Amount |
3
|
|
| Total, Amount |
5,110
|
|
| Non-U.S. securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 21,371
|
|
| Due in One Year or Less, Yield |
0.57%
|
|
| Due after One Year through Five Years, Amount |
$ 1,933
|
|
| Due after One Year through Five Years, Yield |
2.96%
|
|
| Due after Five Years though Ten Years, Amount |
$ 6
|
|
| Due after Five Years though Ten Years, Yield |
2.87%
|
|
| Due after Ten Years, Amount |
$ 0
|
|
| Due after Ten Years, Yield |
0.00%
|
|
| Total, Amount |
$ 23,310
|
|
| Total, Yield |
0.79%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 21,371
|
|
| Due after One Year through Five Years, Amount |
1,966
|
|
| Due after Five Years though Ten Years, Amount |
6
|
|
| Due after Ten Years, Amount |
0
|
|
| Total, Amount |
23,343
|
|
| Corporate/Agency bonds |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 66
|
|
| Due in One Year or Less, Yield |
3.51%
|
|
| Due after One Year through Five Years, Amount |
$ 89
|
|
| Due after One Year through Five Years, Yield |
3.64%
|
|
| Due after Five Years though Ten Years, Amount |
$ 95
|
|
| Due after Five Years though Ten Years, Yield |
3.48%
|
|
| Due after Ten Years, Amount |
$ 2
|
|
| Due after Ten Years, Yield |
6.34%
|
|
| Total, Amount |
$ 252
|
|
| Total, Yield |
3.48%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 66
|
|
| Due after One Year through Five Years, Amount |
93
|
|
| Due after Five Years though Ten Years, Amount |
96
|
|
| Due after Ten Years, Amount |
2
|
|
| Total, Amount |
257
|
|
| Other taxable securities, substantially all asset-backed securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 2,726
|
|
| Due in One Year or Less, Yield |
1.07%
|
|
| Due after One Year through Five Years, Amount |
$ 4,908
|
|
| Due after One Year through Five Years, Yield |
1.29%
|
|
| Due after Five Years though Ten Years, Amount |
$ 2,131
|
|
| Due after Five Years though Ten Years, Yield |
2.40%
|
|
| Due after Ten Years, Amount |
$ 912
|
|
| Due after Ten Years, Yield |
3.23%
|
|
| Total, Amount |
$ 10,677
|
|
| Total, Yield |
1.57%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 3,017
|
|
| Due after One Year through Five Years, Amount |
4,617
|
|
| Due after Five Years though Ten Years, Amount |
2,144
|
|
| Due after Ten Years, Amount |
916
|
|
| Total, Amount |
10,694
|
|
| Total taxable securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 25,640
|
|
| Due in One Year or Less, Yield |
0.90%
|
|
| Due after One Year through Five Years, Amount |
$ 80,956
|
|
| Due after One Year through Five Years, Yield |
1.96%
|
|
| Due after Five Years though Ten Years, Amount |
$ 194,307
|
|
| Due after Five Years though Ten Years, Yield |
2.80%
|
|
| Due after Ten Years, Amount |
$ 20,726
|
|
| Due after Ten Years, Yield |
4.00%
|
|
| Total, Amount |
$ 321,629
|
|
| Total, Yield |
2.53%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 25,965
|
|
| Due after One Year through Five Years, Amount |
81,555
|
|
| Due after Five Years though Ten Years, Amount |
193,390
|
|
| Due after Ten Years, Amount |
20,596
|
|
| Total, Amount |
321,506
|
|
| Tax-exempt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 651
|
|
| Due in One Year or Less, Yield |
1.02%
|
|
| Due after One Year through Five Years, Amount |
$ 2,833
|
|
| Due after One Year through Five Years, Yield |
1.40%
|
|
| Due after Five Years though Ten Years, Amount |
$ 2,482
|
|
| Due after Five Years though Ten Years, Yield |
1.67%
|
|
| Due after Ten Years, Amount |
$ 4,845
|
|
| Due after Ten Years, Yield |
1.02%
|
|
| Total, Amount |
$ 10,811
|
|
| Total, Yield |
1.26%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 651
|
|
| Due after One Year through Five Years, Amount |
2,839
|
|
| Due after Five Years though Ten Years, Amount |
2,479
|
|
| Due after Ten Years, Amount |
4,832
|
|
| Total, Amount |
10,801
|
|
| Debt securities |
|
|
| Amortized cost of debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 26,291
|
|
| Due in One Year or Less, Yield |
0.90%
|
|
| Due after One Year through Five Years, Amount |
$ 83,789
|
|
| Due after One Year through Five Years, Yield |
1.94%
|
|
| Due after Five Years though Ten Years, Amount |
$ 196,789
|
|
| Due after Five Years though Ten Years, Yield |
2.78%
|
|
| Due after Ten Years, Amount |
$ 25,571
|
|
| Due after Ten Years, Yield |
3.41%
|
|
| Total, Amount |
$ 332,440
|
|
| Total, Yield |
2.49%
|
|
| Debt securities carried at fair value |
|
|
| Due in One Year or Less, Amount |
$ 26,616
|
|
| Due after One Year through Five Years, Amount |
84,394
|
|
| Due after Five Years though Ten Years, Amount |
195,869
|
|
| Due after Ten Years, Amount |
25,428
|
|
| Total, Amount |
$ 332,307
|
|