Pension And Other Postretirement Benefits (Components Of The Plans' Net Periodic Benefits Cost) (Details) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
| Pension Plan [Member] |
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
| Service Cost |
$ 1.3
|
|
$ 2.6
|
|
| Interest cost |
3.0
|
|
6.1
|
|
| Expected return on assets |
(6.1)
|
|
(12.2)
|
|
| Amortization of prior service credit |
(0.2)
|
|
(0.4)
|
|
| Recognized actuarial loss |
2.1
|
|
4.1
|
|
| Total Net Periodic Benefits Cost |
0.1
|
|
0.2
|
|
| Other Postretirement Benefits [Member] |
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
| Service Cost |
0.3
|
|
0.6
|
|
| Interest cost |
1.0
|
|
2.0
|
|
| Expected return on assets |
(4.3)
|
|
(8.6)
|
|
| Amortization of prior service credit |
0.0
|
|
0.0
|
|
| Recognized actuarial loss |
0.0
|
|
0.0
|
|
| Total Net Periodic Benefits Cost |
$ (3.0)
|
|
$ (6.0)
|
|
| Predecessor [Member] | Pension Plan [Member] |
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
| Service Cost |
|
$ 1.2
|
|
$ 2.4
|
| Interest cost |
|
3.5
|
|
6.9
|
| Expected return on assets |
|
(6.0)
|
|
(11.9)
|
| Amortization of prior service credit |
|
(0.3)
|
|
(0.5)
|
| Recognized actuarial loss |
|
1.7
|
|
3.3
|
| Total Net Periodic Benefits Cost |
|
0.1
|
|
0.2
|
| Predecessor [Member] | Other Postretirement Benefits [Member] |
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
| Service Cost |
|
0.2
|
|
0.5
|
| Interest cost |
|
1.2
|
|
2.4
|
| Expected return on assets |
|
(4.0)
|
|
(8.1)
|
| Amortization of prior service credit |
|
0.0
|
|
0.0
|
| Recognized actuarial loss |
|
0.0
|
|
0.0
|
| Total Net Periodic Benefits Cost |
|
$ (2.6)
|
|
$ (5.2)
|