|
Securities - Gross Unrealized Losses (Details) (USD $)
In Millions, unless otherwise specified
|
Jun. 30, 2014
|
Dec. 31, 2013
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
$ 7,114
|
[1] |
$ 154,358
|
[1] |
| Less than Twelve Months, Gross Unrealized Losses |
(62)
|
[1] |
(5,791)
|
[1] |
| Twelve Months or Longer, Fair Value |
88,414
|
[1] |
14,839
|
[1] |
| Twelve Months or Longer, Gross Unrealized Losses |
(1,799)
|
[1] |
(760)
|
[1] |
| Total, Fair Value |
95,528
|
[1] |
169,197
|
[1] |
| Total, Gross Unrealized Losses |
(1,861)
|
[1] |
(6,551)
|
[1] |
|
Temporarily Impaired [Member] | US Government Corporations and Agencies Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
1,486
|
|
5,770
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(1)
|
|
(61)
|
|
| Twelve Months or Longer, Fair Value |
678
|
|
19
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(14)
|
|
(1)
|
|
| Total, Fair Value |
2,164
|
|
5,789
|
|
| Total, Gross Unrealized Losses |
(15)
|
|
(62)
|
|
|
Temporarily Impaired [Member] | Debt Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
6,702
|
|
154,356
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(29)
|
|
(5,790)
|
|
| Twelve Months or Longer, Fair Value |
88,413
|
|
14,838
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(1,798)
|
|
(759)
|
|
| Total, Fair Value |
95,115
|
|
169,194
|
|
| Total, Gross Unrealized Losses |
(1,827)
|
|
(6,549)
|
|
|
Temporarily Impaired [Member] | Agency MBS [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
0
|
|
132,032
|
|
| Less than Twelve Months, Gross Unrealized Losses |
0
|
|
(5,457)
|
|
| Twelve Months or Longer, Fair Value |
81,930
|
|
9,324
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(1,664)
|
|
(497)
|
|
| Total, Fair Value |
81,930
|
|
141,356
|
|
| Total, Gross Unrealized Losses |
(1,664)
|
|
(5,954)
|
|
|
Temporarily Impaired [Member] | Collateralized Mortgage Obligations [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
1,407
|
|
13,438
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(11)
|
|
(210)
|
|
| Twelve Months or Longer, Fair Value |
3,393
|
|
2,661
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(50)
|
|
(105)
|
|
| Total, Fair Value |
4,800
|
|
16,099
|
|
| Total, Gross Unrealized Losses |
(61)
|
|
(315)
|
|
|
Temporarily Impaired [Member] | Residential Mortgage Backed Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
275
|
|
819
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(2)
|
|
(15)
|
|
| Twelve Months or Longer, Fair Value |
924
|
|
1,237
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(48)
|
|
(106)
|
|
| Total, Fair Value |
1,199
|
|
2,056
|
|
| Total, Gross Unrealized Losses |
(50)
|
|
(121)
|
|
|
Temporarily Impaired [Member] | Commercial Mortgage Backed Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
53
|
|
286
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(1)
|
|
(12)
|
|
| Twelve Months or Longer, Fair Value |
0
|
|
0
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
0
|
|
0
|
|
| Total, Fair Value |
53
|
|
286
|
|
| Total, Gross Unrealized Losses |
(1)
|
|
(12)
|
|
|
Temporarily Impaired [Member] | Foreign Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
131
|
|
0
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(3)
|
|
0
|
|
| Twelve Months or Longer, Fair Value |
39
|
|
45
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(2)
|
|
(24)
|
|
| Total, Fair Value |
170
|
|
45
|
|
| Total, Gross Unrealized Losses |
(5)
|
|
(24)
|
|
|
Temporarily Impaired [Member] | Corporate Bond Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
0
|
|
106
|
|
| Less than Twelve Months, Gross Unrealized Losses |
0
|
|
(3)
|
|
| Twelve Months or Longer, Fair Value |
93
|
|
282
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(3)
|
|
(4)
|
|
| Total, Fair Value |
93
|
|
388
|
|
| Total, Gross Unrealized Losses |
(3)
|
|
(7)
|
|
|
Temporarily Impaired [Member] | Other Debt Obligations [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
1,653
|
|
116
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(6)
|
|
(2)
|
|
| Twelve Months or Longer, Fair Value |
364
|
|
280
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(4)
|
|
(3)
|
|
| Total, Fair Value |
2,017
|
|
396
|
|
| Total, Gross Unrealized Losses |
(10)
|
|
(5)
|
|
|
Temporarily Impaired [Member] | Taxable Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
5,005
|
|
152,567
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(24)
|
|
(5,760)
|
|
| Twelve Months or Longer, Fair Value |
87,421
|
|
13,848
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(1,785)
|
|
(740)
|
|
| Total, Fair Value |
92,426
|
|
166,415
|
|
| Total, Gross Unrealized Losses |
(1,809)
|
|
(6,500)
|
|
|
Temporarily Impaired [Member] | Tax-exempt securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
1,697
|
|
1,789
|
|
| Less than Twelve Months, Gross Unrealized Losses |
(5)
|
|
(30)
|
|
| Twelve Months or Longer, Fair Value |
992
|
|
990
|
|
| Twelve Months or Longer, Gross Unrealized Losses |
(13)
|
|
(19)
|
|
| Total, Fair Value |
2,689
|
|
2,779
|
|
| Total, Gross Unrealized Losses |
(18)
|
|
(49)
|
|
|
Other Than Temporarily Impaired [Member] | Residential Mortgage Backed Securities [Member]
|
|
|
|
|
| Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |
|
|
|
|
| Less than Twelve Months, Fair Value |
412
|
[1] |
2
|
[1] |
| Less than Twelve Months, Gross Unrealized Losses |
(33)
|
[1] |
(1)
|
[1] |
| Twelve Months or Longer, Fair Value |
1
|
[1] |
1
|
[1] |
| Twelve Months or Longer, Gross Unrealized Losses |
(1)
|
[1] |
(1)
|
[1] |
| Total, Fair Value |
413
|
[1] |
3
|
[1] |
| Total, Gross Unrealized Losses |
$ (34)
|
[1] |
$ (2)
|
[1] |
|
|
|