|
Securities Available for Sale, Contractual Maturities (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
$ 232,414 |
$ 219,196 |
| Weighted Average Yield Contractual Maturities, Total |
3.91% |
4.12% |
| Due in 1 year, Contractual Maturities |
5,034 |
1,899 |
| Percentage of Weighted Average Yield, Due In 1 year |
2.28% |
3.85% |
| Due in 1-5 years, Contractual Maturities |
36,092 |
43,305 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
2.37% |
2.36% |
| Due in 5-10 years, Contractual Maturities |
28,052 |
19,665 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
3.07% |
3.31% |
| Due in 10 years or More, Contractual Maturities |
163,236 |
154,327 |
| Percentage of Weighted Average Yield, Due After 10 Years |
4.44% |
4.72% |
|
US Treasury and Government [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
7,146 |
6,968 |
| Weighted Average Yield Contractual Maturities, Total |
1.59% |
0.91% |
| Due in 1 year, Contractual Maturities |
376 |
57 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.43% |
0.48% |
| Due in 1-5 years, Contractual Maturities |
661 |
6,659 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
1.24% |
0.84% |
| Due in 5-10 years, Contractual Maturities |
6,109 |
194 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
1.70% |
2.73% |
| Due in 10 years or More, Contractual Maturities |
0 |
58 |
| Percentage of Weighted Average Yield, Due After 10 Years |
0.00% |
3.81% |
|
US States and Political Subdivisions [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
38,676 |
32,593 |
| Weighted Average Yield Contractual Maturities, Total |
5.29% |
4.94% |
| Due in 1 year, Contractual Maturities |
1,861 |
520 |
| Percentage of Weighted Average Yield, Due In 1 year |
2.61% |
3.02% |
| Due in 1-5 years, Contractual Maturities |
11,620 |
11,679 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
2.18% |
2.90% |
| Due in 5-10 years, Contractual Maturities |
3,380 |
2,692 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
5.51% |
5.31% |
| Due in 10 years or More, Contractual Maturities |
21,815 |
17,702 |
| Percentage of Weighted Average Yield, Due After 10 Years |
7.15% |
6.28% |
|
Mortgage Backed Securities [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
133,184 |
132,740 |
| Weighted Average Yield Contractual Maturities, Total |
4.12% |
4.55% |
| Due in 1 year, Contractual Maturities |
1 |
1 |
| Percentage of Weighted Average Yield, Due In 1 year |
5.40% |
6.47% |
| Due in 1-5 years, Contractual Maturities |
184 |
442 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
4.37% |
4.02% |
| Due in 5-10 years, Contractual Maturities |
1,814 |
2,126 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
2.95% |
2.72% |
| Due in 10 years or More, Contractual Maturities |
131,185 |
130,171 |
| Percentage of Weighted Average Yield, Due After 10 Years |
4.13% |
4.58% |
|
Federal agencies [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
97,285 |
96,754 |
| Weighted Average Yield Contractual Maturities, Total |
3.82% |
4.39% |
| Due in 1 year, Contractual Maturities |
1 |
1 |
| Percentage of Weighted Average Yield, Due In 1 year |
5.40% |
6.47% |
| Due in 1-5 years, Contractual Maturities |
106 |
442 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
4.87% |
4.02% |
| Due in 5-10 years, Contractual Maturities |
1,144 |
1,399 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
3.41% |
3.07% |
| Due in 10 years or More, Contractual Maturities |
96,034 |
94,912 |
| Percentage of Weighted Average Yield, Due After 10 Years |
3.83% |
4.42% |
|
Residential [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
15,931 |
17,836 |
| Weighted Average Yield Contractual Maturities, Total |
4.38% |
4.51% |
| 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 |
569 |
640 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
2.06% |
1.88% |
| Due in 10 years or More, Contractual Maturities |
15,362 |
17,196 |
| Percentage of Weighted Average Yield, Due After 10 Years |
4.47% |
4.61% |
|
Commercial [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
19,968 |
18,150 |
| Weighted Average Yield Contractual Maturities, Total |
5.33% |
5.40% |
| 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 |
78 |
0 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
3.69% |
0.00% |
| Due in 5-10 years, Contractual Maturities |
101 |
87 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
2.84% |
3.33% |
| Due in 10 years or More, Contractual Maturities |
19,789 |
18,063 |
| Percentage of Weighted Average Yield, Due After 10 Years |
5.35% |
5.41% |
|
Corporate debt securities [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
21,333 |
18,404 |
| Weighted Average Yield Contractual Maturities, Total |
4.26% |
4.64% |
| Due in 1 year, Contractual Maturities |
1,037 |
815 |
| Percentage of Weighted Average Yield, Due In 1 year |
4.29% |
5.57% |
| Due in 1-5 years, Contractual Maturities |
12,792 |
11,022 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
3.19% |
3.40% |
| Due in 5-10 years, Contractual Maturities |
6,099 |
4,691 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
6.14% |
6.67% |
| Due in 10 years or More, Contractual Maturities |
1,405 |
1,876 |
| Percentage of Weighted Average Yield, Due After 10 Years |
5.88% |
6.38% |
|
Collateralized debt obligations [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
13,188 |
8,599 |
| Weighted Average Yield Contractual Maturities, Total |
1.35% |
1.10% |
| Due in 1 year, Contractual Maturities |
44 |
0 |
| Percentage of Weighted Average Yield, Due In 1 year |
0.96% |
0.00% |
| Due in 1-5 years, Contractual Maturities |
1,246 |
540 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
0.71% |
1.61% |
| Due in 5-10 years, Contractual Maturities |
7,376 |
6,813 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
1.01% |
1.00% |
| Due in 10 years or More, Contractual Maturities |
4,522 |
1,246 |
| Percentage of Weighted Average Yield, Due After 10 Years |
2.08% |
1.42% |
|
Other Debt Securities [Member]
|
|
|
| Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Contractual Maturities,Total |
18,887 |
19,892 |
| Weighted Average Yield Contractual Maturities, Total |
1.85% |
1.89% |
| Due in 1 year, Contractual Maturities |
1,715 |
506 |
| Percentage of Weighted Average Yield, Due In 1 year |
1.14% |
2.29% |
| Due in 1-5 years, Contractual Maturities |
9,589 |
12,963 |
| Percentage of Weighted Average Yield, Due in 1-5 Years |
1.75% |
1.75% |
| Due in 5-10 years, Contractual Maturities |
3,274 |
3,149 |
| Percentage of Weighted Average Yield, Due In 5-10 years |
2.11% |
2.04% |
| Due in 10 years or More, Contractual Maturities |
$ 4,309 |
$ 3,274 |
| Percentage of Weighted Average Yield, Due After 10 Years |
2.14% |
2.29% |