|
Changes in Allowance for Loan Losses (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||||
| Balance at beginning of period | $ 51 | $ 50 | $ 54 | $ 53 |
| Charge-offs | (5) | (5) | (13) | (14) |
| Recoveries | 1 | 2 | 1 | |
| Provision for loan losses | 10 | 8 | 14 | 13 |
| Balance at end of period | 57 | 53 | 57 | 53 |
|
Residential real estate mortgages
|
||||
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||||
| Balance at beginning of period | 34 | 34 | 40 | 38 |
| Charge-offs | (2) | (2) | (6) | (8) |
| Recoveries | 1 | 2 | ||
| Provision for loan losses | 2 | 6 | (1) | 8 |
| Balance at end of period | 35 | 38 | 35 | 38 |
|
Home equity lines of credit
|
||||
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||||
| Balance at beginning of period | 17 | 16 | 14 | 15 |
| Charge-offs | (3) | (3) | (7) | (6) |
| Recoveries | 1 | |||
| Provision for loan losses | 8 | 2 | 15 | 5 |
| Balance at end of period | $ 22 | $ 15 | $ 22 | $ 15 |