Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions |
3 Months Ended |
|
Mar. 31, 2017 |
Dec. 31, 2016 |
| Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [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 |
$ 24
|
|
| Due after One Year through Five Years, Yield |
4.43%
|
|
| Due after Five Years through Ten Years, Amount |
$ 922
|
|
| Due after Five Years though Ten Years, Yield |
2.39%
|
|
| Due after Ten Years, Amount |
$ 115,087
|
|
| Due after Ten Years, Yield |
3.01%
|
|
| Amortized Cost |
$ 116,033
|
$ 117,071
|
| Total, Yield |
3.01%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Debt securities carried at fair value |
$ 312,012
|
313,660
|
| Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Due in One Year or Less, Amount |
0
|
|
| Due after One Year through Five Years, Amount |
24
|
|
| Due after Five Years though Ten Years, Amount |
885
|
|
| Due after Ten Years, Amount |
113,094
|
|
| Held-to-maturity Securities, Fair Value |
114,003
|
115,285
|
| Available-for-sale securities of business held for sale |
$ (691)
|
$ (619)
|
| Maturity period |
1 year
|
|
| Available-for-sale debt securities of business held for sale, average yield |
0.13%
|
|
| Agency |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 4
|
|
| Due in One Year or Less, Yield |
4.75%
|
|
| Due after One Year through Five Years, Amount |
$ 48
|
|
| Due after One Year through Five Years, Yield |
3.80%
|
|
| Due after Five Years though Ten Years, Amount |
$ 347
|
|
| Due after Five Years though Ten Years, Yield |
2.63%
|
|
| Due after Ten Years, Amount |
$ 190,285
|
|
| Due after Ten Years, Yield |
3.23%
|
|
| Total, Amount |
$ 190,684
|
|
| Total, Yield |
3.25%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 4
|
|
| Due after One Year through Five Years, Amount |
49
|
|
| Due after Five Years though Ten Years, Amount |
350
|
|
| Due after Ten Years, Amount |
188,640
|
|
| Debt securities carried at fair value |
189,043
|
|
| 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 |
$ 0
|
|
| Due after Five Years though Ten Years, Yield |
0.00%
|
|
| Due after Ten Years, Amount |
$ 7,852
|
|
| Due after Ten Years, Yield |
3.18%
|
|
| Total, Amount |
$ 7,852
|
|
| Total, Yield |
3.18%
|
|
| 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 |
0
|
|
| Due after Ten Years, Amount |
7,882
|
|
| Debt securities carried at fair value |
7,882
|
|
| Commercial |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 48
|
|
| Due in One Year or Less, Yield |
7.92%
|
|
| Due after One Year through Five Years, Amount |
$ 542
|
|
| Due after One Year through Five Years, Yield |
1.95%
|
|
| Due after Five Years though Ten Years, Amount |
$ 11,668
|
|
| Due after Five Years though Ten Years, Yield |
2.47%
|
|
| Due after Ten Years, Amount |
$ 551
|
|
| Due after Ten Years, Yield |
2.29%
|
|
| Total, Amount |
$ 12,809
|
|
| Total, Yield |
2.46%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 48
|
|
| Due after One Year through Five Years, Amount |
543
|
|
| Due after Five Years though Ten Years, Amount |
11,446
|
|
| Due after Ten Years, Amount |
535
|
|
| Debt securities carried at fair value |
12,572
|
|
| 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 |
$ 30
|
|
| Due after Five Years though Ten Years, Yield |
0.01%
|
|
| Due after Ten Years, Amount |
$ 4,729
|
|
| Due after Ten Years, Yield |
8.29%
|
|
| Total, Amount |
$ 4,759
|
|
| Total, Yield |
8.24%
|
|
| 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 |
40
|
|
| Due after Ten Years, Amount |
4,985
|
|
| Debt securities carried at fair value |
5,025
|
|
| Mortgage-backed securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 52
|
|
| Due in One Year or Less, Yield |
7.68%
|
|
| Due after One Year through Five Years, Amount |
$ 590
|
|
| Due after One Year through Five Years, Yield |
2.10%
|
|
| Due after Five Years though Ten Years, Amount |
$ 12,045
|
|
| Due after Five Years though Ten Years, Yield |
2.47%
|
|
| Due after Ten Years, Amount |
$ 203,417
|
|
| Due after Ten Years, Yield |
3.34%
|
|
| Total, Amount |
$ 216,104
|
|
| Total, Yield |
3.31%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 52
|
|
| Due after One Year through Five Years, Amount |
592
|
|
| Due after Five Years though Ten Years, Amount |
11,836
|
|
| Due after Ten Years, Amount |
202,042
|
|
| Debt securities carried at fair value |
214,522
|
|
| 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 |
$ 695
|
|
| Due in One Year or Less, Yield |
0.71%
|
|
| Due after One Year through Five Years, Amount |
$ 29,457
|
|
| Due after One Year through Five Years, Yield |
1.59%
|
|
| Due after Five Years though Ten Years, Amount |
$ 20,790
|
|
| Due after Five Years though Ten Years, Yield |
1.87%
|
|
| Due after Ten Years, Amount |
$ 114
|
|
| Due after Ten Years, Yield |
5.40%
|
|
| Total, Amount |
$ 51,056
|
|
| Total, Yield |
1.70%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 697
|
|
| Due after One Year through Five Years, Amount |
29,297
|
|
| Due after Five Years though Ten Years, Amount |
20,443
|
|
| Due after Ten Years, Amount |
121
|
|
| Debt securities carried at fair value |
50,558
|
|
| Non-U.S. securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,719
|
|
| Due in One Year or Less, Yield |
0.29%
|
|
| Due after One Year through Five Years, Amount |
$ 1,259
|
|
| Due after One Year through Five Years, Yield |
2.03%
|
|
| Due after Five Years though Ten Years, Amount |
$ 29
|
|
| Due after Five Years though Ten Years, Yield |
1.96%
|
|
| Due after Ten Years, Amount |
$ 217
|
|
| Due after Ten Years, Yield |
6.53%
|
|
| Total, Amount |
$ 20,224
|
|
| Total, Yield |
0.47%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 18,722
|
|
| Due after One Year through Five Years, Amount |
1,261
|
|
| Due after Five Years though Ten Years, Amount |
31
|
|
| Due after Ten Years, Amount |
221
|
|
| Debt securities carried at fair value |
20,235
|
|
| 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 |
$ 2,358
|
|
| Due in One Year or Less, Yield |
2.06%
|
|
| Due after One Year through Five Years, Amount |
$ 4,305
|
|
| Due after One Year through Five Years, Yield |
2.11%
|
|
| Due after Five Years though Ten Years, Amount |
$ 1,956
|
|
| Due after Five Years though Ten Years, Yield |
2.78%
|
|
| Due after Ten Years, Amount |
$ 1,364
|
|
| Due after Ten Years, Yield |
2.98%
|
|
| Total, Amount |
$ 9,983
|
|
| Total, Yield |
2.35%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 2,359
|
|
| Due after One Year through Five Years, Amount |
4,307
|
|
| Due after Five Years though Ten Years, Amount |
1,963
|
|
| Due after Ten Years, Amount |
1,424
|
|
| Debt securities carried at fair value |
10,053
|
|
| Total taxable securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 21,824
|
|
| Due in One Year or Less, Yield |
0.51%
|
|
| Due after One Year through Five Years, Amount |
$ 35,611
|
|
| Due after One Year through Five Years, Yield |
1.68%
|
|
| Due after Five Years though Ten Years, Amount |
$ 34,820
|
|
| Due after Five Years though Ten Years, Yield |
2.13%
|
|
| Due after Ten Years, Amount |
$ 205,112
|
|
| Due after Ten Years, Yield |
3.35%
|
|
| Total, Amount |
$ 297,367
|
|
| Total, Yield |
2.81%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 21,830
|
|
| Due after One Year through Five Years, Amount |
35,457
|
|
| Due after Five Years though Ten Years, Amount |
34,273
|
|
| Due after Ten Years, Amount |
203,808
|
|
| Debt securities carried at fair value |
295,368
|
|
| Tax-exempt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 604
|
|
| Due in One Year or Less, Yield |
1.70%
|
|
| Due after One Year through Five Years, Amount |
$ 6,287
|
|
| Due after One Year through Five Years, Yield |
1.28%
|
|
| Due after Five Years though Ten Years, Amount |
$ 8,328
|
|
| Due after Five Years though Ten Years, Yield |
1.42%
|
|
| Due after Ten Years, Amount |
$ 2,224
|
|
| Due after Ten Years, Yield |
1.52%
|
|
| Total, Amount |
$ 17,443
|
|
| Total, Yield |
1.39%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 603
|
|
| Due after One Year through Five Years, Amount |
6,287
|
|
| Due after Five Years though Ten Years, Amount |
8,234
|
|
| Due after Ten Years, Amount |
2,211
|
|
| Debt securities carried at fair value |
17,335
|
|
| Debt securities |
|
|
| Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 22,428
|
|
| Due in One Year or Less, Yield |
0.54%
|
|
| Due after One Year through Five Years, Amount |
$ 41,898
|
|
| Due after One Year through Five Years, Yield |
1.62%
|
|
| Due after Five Years though Ten Years, Amount |
$ 43,148
|
|
| Due after Five Years though Ten Years, Yield |
1.99%
|
|
| Due after Ten Years, Amount |
$ 207,336
|
|
| Due after Ten Years, Yield |
3.33%
|
|
| Total, Amount |
$ 314,810
|
|
| Total, Yield |
2.73%
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |
|
|
| Due in One Year or Less, Amount |
$ 22,433
|
|
| Due after One Year through Five Years, Amount |
41,744
|
|
| Due after Five Years though Ten Years, Amount |
42,507
|
|
| Due after Ten Years, Amount |
206,019
|
|
| Debt securities carried at fair value |
$ 312,703
|
|