|
Analysis of Impaired Finance Receivables (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2009
|
|
| Financing Receivable, Impaired [Line Items] | ||
| Recorded Investment | $ 51 | $ 13 |
| Unpaid Principal Balance | 151 | |
| Related Allowance | 7 | |
| Average Recorded Investment | 77 | |
| Interest Income Recognized | ||
|
Impaired loans with related allowance
|
||
| Financing Receivable, Impaired [Line Items] | ||
| Recorded Investment | 9 | |
| Unpaid Principal Balance | 36 | |
| Related Allowance | 7 | |
| Average Recorded Investment | 14 | |
| Interest Income Recognized | ||
|
Impaired loans with no related allowance
|
||
| Financing Receivable, Impaired [Line Items] | ||
| Recorded Investment | 7 | |
| Unpaid Principal Balance | 80 | |
| Average Recorded Investment | 12 | |
| Interest Income Recognized | ||
|
Impaired loans with U.S. government guarantee
|
||
| Financing Receivable, Impaired [Line Items] | ||
| Recorded Investment | 35 | |
| Unpaid Principal Balance | 35 | |
| Average Recorded Investment | 51 | |
| Interest Income Recognized |