|
Fair Value, Option, Gains and Losses (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2012
|
Mar. 31, 2011
|
|
Mortgages held for sale [Member] | Mortgage banking noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
$ 1,795 |
$ 658 |
|
Mortgages held for sale [Member] | Other noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
1 |
0 |
|
Mortgages held for sale [Member] | Net gains from trading activities [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Loans held for sale [Member] | Mortgage banking noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Loans held for sale [Member] | Other noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
13 |
9 |
|
Loans held for sale [Member] | Net gains from trading activities [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Loans [Member] | Mortgage banking noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
10 |
|
Loans [Member] | Other noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
42 |
0 |
|
Loans [Member] | Net gains from trading activities [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Long-term debt [Member] | Mortgage banking noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
(10) |
|
Long-term debt [Member] | Other noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Long-term debt [Member] | Net gains from trading activities [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Other interests held [Member] | Mortgage banking noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Other interests held [Member] | Other noninterest income [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
23 |
10 |
|
Other interests held [Member] | Net gains from trading activities [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
$ (9) |
$ 0 |