|
Debt (Schedule Of Debt-To-Capital Ratios) (Details)
|
Dec. 31, 2012
|
|---|---|
| Actual | 50.00% |
|
IPL [Member]
|
|
| Actual | 45.00% |
|
WPL [Member]
|
|
| Actual | 48.00% |
|
Maximum [Member]
|
|
| Requirement | 65.00% |
|
Maximum [Member] | IPL [Member]
|
|
| Requirement | 58.00% |
|
Maximum [Member] | WPL [Member]
|
|
| Requirement | 58.00% |