Pension And Other Postretirement Benefits (Schedule Of Portfolio Asset Mix) (Details)
|
12 Months Ended |
Dec. 31, 2015 |
|---|
| Domestic Equities [Member] | Pension Plan |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
25.00%
|
| Equities, Maximum |
45.00%
|
| Domestic Equities [Member] | Other Postretirement Benefits |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
35.00%
|
| Equities, Maximum |
55.00%
|
| International Equities [Member] | Pension Plan |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
15.00%
|
| Equities, Maximum |
25.00%
|
| International Equities [Member] | Other Postretirement Benefits |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
15.00%
|
| Equities, Maximum |
25.00%
|
| Fixed Income [Member] | Pension Plan |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
23.00%
|
| Equities, Maximum |
37.00%
|
| Fixed Income [Member] | Other Postretirement Benefits |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
20.00%
|
| Equities, Maximum |
50.00%
|
| Real Estate/Private Equity/Hedge Funds [Member] | Pension Plan |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
0.00%
|
| Equities, Maximum |
15.00%
|
| Real Estate/Private Equity/Hedge Funds [Member] | Other Postretirement Benefits |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
0.00%
|
| Equities, Maximum |
0.00%
|
| Short-Term Investments [Member] | Pension Plan |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
0.00%
|
| Equities, Maximum |
10.00%
|
| Short-Term Investments [Member] | Other Postretirement Benefits |
|
| Defined Benefit Plan Disclosure [Line Items] |
|
| Equities, Minimum |
0.00%
|
| Equities, Maximum |
10.00%
|