|
Loans and Allowance for Credit Losses, Significant Activity (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
|
| Loans and Allowance for Credit Losses, Significant Activity [Abstract] | ||
| Purchases | $ 1,105 | $ 2,039 |
| Sales | (2,332) | (1,973) |
| Transfers (to) MHFS/LHFS | (87) | (37) |
|
Commercial Portfolio Segment [Member]
|
||
| Loans and Allowance for Credit Losses, Significant Activity [Abstract] | ||
| Purchases | 1,026 | 1,956 |
| Sales | (2,016) | (1,820) |
| Transfers (to) MHFS/LHFS | (80) | (36) |
|
Consumer Portfolio Segment [Member]
|
||
| Loans and Allowance for Credit Losses, Significant Activity [Abstract] | ||
| Purchases | 79 | 83 |
| Sales | (316) | (153) |
| Transfers (to) MHFS/LHFS | $ (7) | $ (1) |