|
Securities Available for Sale, Contractual Maturities (Details) (USD $)
In Millions, unless otherwise specified
|
6 Months Ended |
12 Months Ended |
|
Jun. 30, 2013
|
Dec. 31, 2012
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
$ 246,682 |
$ 232,414 |
| Weighted Average Yield Contractual Maturities, Total |
3.71% |
3.91% |
| Due in 1 year, Contractual Maturities |
6,692 |
5,034 |
| Percentage of Weighted Average Yield, Due In 1 year |
2.49% |
2.28% |
| Due in 1-5 years, Contractual Maturities |
31,013 |
36,092 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
2.39% |
2.37% |
| Due in 5-10 years, Contractual Maturities |
26,941 |
28,052 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
3.03% |
3.07% |
| Due in 10 years or More, Contractual Maturities |
182,036 |
163,236 |
| Percentage of Weighted Average Yield, Due After 10 Years |
4.09% |
4.44% |
|
US Treasury and Government [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
6,383 |
7,146 |
| Weighted Average Yield Contractual Maturities, Total |
1.66% |
1.59% |
| Due in 1 year, Contractual Maturities |
91 |
376 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.38% |
0.43% |
| Due in 1-5 years, Contractual Maturities |
561 |
661 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
1.48% |
1.24% |
| Due in 5-10 years, Contractual Maturities |
5,731 |
6,109 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
1.70% |
1.70% |
| Due in 10 years or More, Contractual Maturities |
0 |
0 |
| Percentage of Weighted Average Yield, Due After 10 Years |
0.00% |
0.00% |
|
US States and Political Subdivisions [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
40,890 |
38,676 |
| Weighted Average Yield Contractual Maturities, Total |
5.15% |
5.29% |
| Due in 1 year, Contractual Maturities |
2,580 |
1,861 |
| Percentage of Weighted Average Yield, Due In 1 year |
2.00% |
2.61% |
| Due in 1-5 years, Contractual Maturities |
10,633 |
11,620 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
2.16% |
2.18% |
| Due in 5-10 years, Contractual Maturities |
3,160 |
3,380 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
5.51% |
5.51% |
| Due in 10 years or More, Contractual Maturities |
24,517 |
21,815 |
| Percentage of Weighted Average Yield, Due After 10 Years |
6.73% |
7.15% |
|
Mortgage Backed Securities [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
143,984 |
133,184 |
| Weighted Average Yield Contractual Maturities, Total |
3.82% |
4.12% |
| Due in 1 year, Contractual Maturities |
0 |
1 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.00% |
5.40% |
| Due in 1-5 years, Contractual Maturities |
188 |
184 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
4.70% |
4.37% |
| Due in 5-10 years, Contractual Maturities |
1,503 |
1,814 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
3.00% |
2.95% |
| Due in 10 years or More, Contractual Maturities |
142,293 |
131,185 |
| Percentage of Weighted Average Yield, Due After 10 Years |
3.83% |
4.13% |
|
Federal agencies [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
110,561 |
97,285 |
| Weighted Average Yield Contractual Maturities, Total |
3.50% |
3.82% |
| Due in 1 year, Contractual Maturities |
0 |
1 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.00% |
5.40% |
| Due in 1-5 years, Contractual Maturities |
104 |
106 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
5.42% |
4.87% |
| Due in 5-10 years, Contractual Maturities |
923 |
1,144 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
3.57% |
3.41% |
| Due in 10 years or More, Contractual Maturities |
109,534 |
96,034 |
| Percentage of Weighted Average Yield, Due After 10 Years |
3.49% |
3.83% |
|
Residential [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
14,117 |
15,931 |
| Weighted Average Yield Contractual Maturities, Total |
4.29% |
4.38% |
| Due in 1 year, Contractual Maturities |
0 |
0 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.00% |
0.00% |
| Due in 1-5 years, Contractual Maturities |
0 |
0 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
0.00% |
0.00% |
| Due in 5-10 years, Contractual Maturities |
480 |
569 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
1.94% |
2.06% |
| Due in 10 years or More, Contractual Maturities |
13,637 |
15,362 |
| Percentage of Weighted Average Yield, Due After 10 Years |
4.38% |
4.47% |
|
Commercial [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
19,306 |
19,968 |
| Weighted Average Yield Contractual Maturities, Total |
5.34% |
5.33% |
| Due in 1 year, Contractual Maturities |
0 |
0 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.00% |
0.00% |
| Due in 1-5 years, Contractual Maturities |
84 |
78 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
3.80% |
3.69% |
| Due in 5-10 years, Contractual Maturities |
100 |
101 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
2.81% |
2.84% |
| Due in 10 years or More, Contractual Maturities |
19,122 |
19,789 |
| Percentage of Weighted Average Yield, Due After 10 Years |
5.36% |
5.35% |
|
Corporate debt securities [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
21,002 |
21,333 |
| Weighted Average Yield Contractual Maturities, Total |
4.21% |
4.26% |
| Due in 1 year, Contractual Maturities |
2,252 |
1,037 |
| Percentage of Weighted Average Yield, Due In 1 year |
3.87% |
4.29% |
| Due in 1-5 years, Contractual Maturities |
11,249 |
12,792 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
3.15% |
3.19% |
| Due in 5-10 years, Contractual Maturities |
6,211 |
6,099 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
5.93% |
6.14% |
| Due in 10 years or More, Contractual Maturities |
1,290 |
1,405 |
| Percentage of Weighted Average Yield, Due After 10 Years |
5.77% |
5.88% |
|
Collateralized loan and other debt obligations [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
17,201 |
13,188 |
| Weighted Average Yield Contractual Maturities, Total |
1.49% |
1.35% |
| Due in 1 year, Contractual Maturities |
59 |
44 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.77% |
0.96% |
| Due in 1-5 years, Contractual Maturities |
902 |
1,246 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
0.66% |
0.71% |
| Due in 5-10 years, Contractual Maturities |
7,353 |
7,376 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
1.08% |
1.01% |
| Due in 10 years or More, Contractual Maturities |
8,887 |
4,522 |
| Percentage of Weighted Average Yield, Due After 10 Years |
1.91% |
2.08% |
|
Other Debt Securities [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
17,222 |
18,887 |
| Weighted Average Yield Contractual Maturities, Total |
1.77% |
1.85% |
| Due in 1 year, Contractual Maturities |
1,710 |
1,715 |
| Percentage of Weighted Average Yield, Due In 1 year |
1.56% |
1.14% |
| Due in 1-5 years, Contractual Maturities |
7,480 |
9,589 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
1.79% |
1.75% |
| Due in 5-10 years, Contractual Maturities |
2,983 |
3,274 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
1.71% |
2.11% |
| Due in 10 years or More, Contractual Maturities |
$ 5,049 |
$ 4,309 |
| Percentage of Weighted Average Yield, Due After 10 Years |
1.85% |
2.14% |