|
Fair Value, Option, Instrument Specific Credit Risk (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2012
|
Mar. 31, 2011
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | $ (26) | $ (50) |
|
Mortgages held for sale [Member]
|
||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | (39) | (59) |
|
Loans held for sale [Member]
|
||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | $ 13 | $ 9 |