|
Pension And Other Postretirement Benefits (Components Of The Plans' Net Periodic Benefits Cost) (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Pension Plan [Member] |
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
| Service Cost |
$ 1.3 |
|
| Interest cost |
3.1 |
|
| Expected return on assets |
(6.1) |
|
| Amortization of prior service credit |
(0.2) |
|
| Recognized actuarial loss |
2.0 |
|
| Total Net Periodic Benefits Cost |
0.1 |
|
| Other Postretirement Benefits [Member] |
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
| Service Cost |
0.3 |
|
| Interest cost |
1.0 |
|
| Expected return on assets |
(4.3) |
|
| Amortization of prior service credit |
0 |
|
| Recognized actuarial loss |
0 |
|
| Total Net Periodic Benefits Cost |
(3.0) |
|
| Predecessor [Member] | Pension Plan [Member] |
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
| Service Cost |
|
1.2 |
| Interest cost |
|
3.4 |
| Expected return on assets |
|
(5.9) |
| Amortization of prior service credit |
|
(0.2) |
| Recognized actuarial loss |
|
1.6 |
| Total Net Periodic Benefits Cost |
|
0.1 |
| Predecessor [Member] | Other Postretirement Benefits [Member] |
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
| Service Cost |
|
0.3 |
| Interest cost |
|
1.2 |
| Expected return on assets |
|
(4.1) |
| Amortization of prior service credit |
|
0 |
| Recognized actuarial loss |
|
0 |
| Total Net Periodic Benefits Cost |
|
$ (2.6) |