Components Of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension Costs
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.1	$ 0.2	$ 0.1	$ 0.4
Interest cost	0.8	1.1	1.6	2.2
Expected return on plan assets	(1.3)	(1.5)	(2.7)	(3.0)
Settlement loss	8.9	0.0	8.9	0.0
Amortization of prior service cost	0.0	0.1	0.2	0.2
Net periodic benefit cost (income)	8.5	(0.1)	8.1	(0.2)
Nonpension Postretirement Costs
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.1	0.0	0.1	0.1
Interest cost	0.2	0.3	0.5	0.5
Amortization of prior service cost	(0.3)	(0.3)	(0.6)	(0.7)
Net periodic benefit cost (income)	$ 0.0	$ 0.0	$ 0.0	$ (0.1)