|
Fair Value, Option, Instrument Specific Credit Risk (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Fair Value, Option, Quantitative Disclosures [Line Items] | |||
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | $ (103) | $ (112) | $ (4) |
|
Mortgages held for sale [Member]
|
|||
| Fair Value, Option, Quantitative Disclosures [Line Items] | |||
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | (124) | (144) | (28) |
|
Loans held for sale [Member]
|
|||
| Fair Value, Option, Quantitative Disclosures [Line Items] | |||
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | $ 21 | $ 32 | $ 24 |