|
Fair Value, Changes in Fair Value of Assets Recorded at Fair Value on Nonrecurring Basis (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Fair Value Assets Measured On Nonrecurring Basis Increase Decrease [Line Items] | ||
| Mortgages held for sale | $ 37 | $ 29 |
| Loans held for sale | 1 | 22 |
| Loans | (5,784) | (5,948) |
| Mortgage servicing rights (amortized) | 0 | (34) |
| Other Assets | (316) | (256) |
| Total | (6,062) | (6,187) |
|
Commercial Portfolio Segment [Member]
|
||
| Fair Value Assets Measured On Nonrecurring Basis Increase Decrease [Line Items] | ||
| Loans | (795) | (1,043) |
|
Consumer Portfolio Segment [Member]
|
||
| Fair Value Assets Measured On Nonrecurring Basis Increase Decrease [Line Items] | ||
| Loans | $ (4,989) | $ (4,905) |