Components Of Net Periodic Benefit Cost (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Pension Costs
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.1	$ 0.2
Interest cost	0.8	1.1
Expected return on plan assets	(1.4)	(1.5)
Amortization of prior service cost	0.1	0.1
Net periodic benefit cost (income)	(0.4)	(0.1)
Postretirement Costs
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0.1
Interest cost	(1.0)	0.2
Expected return on plan assets	0	0
Amortization of prior service cost	0.9	(0.4)
Net periodic benefit cost (income)	$ (0.1)	$ (0.1)