|
Notes Receivable (Schedule Of Allowance For Loan Losses) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
EnerBank [Member]
|
Dec. 31, 2012
EnerBank [Member]
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Allowance for loan losses, at beginning of period | $ 5 | $ 5 | $ 5 | $ 5 | ||
| Charge-offs | (1) | (2) | (4) | (4) | ||
| Recoveries | 1 | 1 | 1 | |||
| Provision for loan losses | 1 | 1 | 3 | 3 | ||
| Allowance for loan losses, at end of period | 5 | 5 | 5 | 5 | ||
| Delinquent loans | 3 | 3 | ||||
| Loans modified as troubled debt restructurings | $ 1 | $ 1 | ||||