Pension And Other Postretirement Benefits (Components Of The Plans' Net Periodic Benefits Cost) (Details) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Pension Plan |
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
| Service Cost |
$ 1.6
|
$ 1.4
|
$ 4.8
|
$ 4.0
|
| Interest cost |
3.2
|
3.3
|
11.0
|
9.4
|
| Expected return on assets |
(5.2)
|
(5.8)
|
(18.5)
|
(18.0)
|
| Amortization of prior service (credit) cost |
(0.2)
|
(0.3)
|
(0.8)
|
(0.7)
|
| Recognized actuarial loss |
2.7
|
2.1
|
8.9
|
6.2
|
| Total Net Periodic Benefits Cost |
2.1
|
0.7
|
5.4
|
0.9
|
| Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments |
(2.6)
|
0.0
|
(2.6)
|
0.0
|
| Defined Benefit Plan Net Periodic Benefit Costs |
4.7
|
0.7
|
8.0
|
0.9
|
| Other Postretirement Benefits |
|
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
| Service Cost |
0.3
|
0.2
|
0.8
|
0.8
|
| Interest cost |
1.0
|
1.0
|
3.3
|
3.0
|
| Expected return on assets |
(3.4)
|
(4.4)
|
(11.5)
|
(13.0)
|
| Amortization of prior service (credit) cost |
(0.1)
|
0.0
|
(0.4)
|
0.0
|
| Recognized actuarial loss |
0.1
|
(0.1)
|
0.2
|
(0.1)
|
| Total Net Periodic Benefits Cost |
(2.1)
|
(3.3)
|
(7.6)
|
(9.3)
|
| Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments |
0.0
|
0.0
|
0.0
|
0.0
|
| Defined Benefit Plan Net Periodic Benefit Costs |
$ (2.1)
|
$ (3.3)
|
$ (7.6)
|
$ (9.3)
|