|
Loans and Allowance for Credit Losses, Significant Activity (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Loans and Allowance for Credit Losses, Significant Activity [Abstract] | ||
| Purchases | $ 12,447 | $ 7,362 |
| Sales | (6,680) | (5,723) |
| Transfers to mortgages/loans held for sale | (105) | (239) |
|
Commercial Portfolio Segment [Member]
|
||
| Loans and Allowance for Credit Losses, Significant Activity [Abstract] | ||
| Purchases | 12,280 | 7,078 |
| Sales | (5,840) | (4,705) |
| Transfers to mortgages/loans held for sale | (84) | (164) |
|
Consumer Portfolio Segment [Member]
|
||
| Loans and Allowance for Credit Losses, Significant Activity [Abstract] | ||
| Purchases | 167 | 284 |
| Sales | (840) | (1,018) |
| Transfers to mortgages/loans held for sale | $ (21) | $ (75) |