|
Fair Value, Option, Gains and Losses (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2013
|
Mar. 31, 2012
|
|
Mortgage banking noninterest income [Member] | Mortgages held for sale [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
$ 973 |
$ 1,795 |
|
Mortgage banking noninterest income [Member] | Loans held for sale [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Mortgage banking noninterest income [Member] | Loans Receivable [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Mortgage banking noninterest income [Member] | Other Assets [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Mortgage banking noninterest income [Member] | Other interests held [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Other noninterest income [Member] | Mortgages held for sale [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
1 |
|
Other noninterest income [Member] | Loans held for sale [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
13 |
|
Other noninterest income [Member] | Loans Receivable [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
(47) |
42 |
|
Other noninterest income [Member] | Other Assets [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
14 |
0 |
|
Other noninterest income [Member] | Other interests held [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
6 |
23 |
|
Net gains (losses) from trading activities [Member] | Mortgages held for sale [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Net gains (losses) from trading activities [Member] | Loans held for sale [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Net gains (losses) from trading activities [Member] | Loans Receivable [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Net gains (losses) from trading activities [Member] | Other Assets [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
0 |
0 |
|
Net gains (losses) from trading activities [Member] | Other interests held [Member]
|
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] |
|
|
| Gains (Losses) on changes in fair value |
$ (7) |
$ (9) |