Employee Benefit Plans (Components Of Net Period Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.2	$ 0.4
Interest cost	5.2	5.3
Expected return on plan assets	(7.9)	(8.2)
Net periodic benefit gains	(2.5)	(2.5)
Postretirement Health Care Plan Benefit
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0.1	0.1
Net periodic benefit gains	$ 0.1	$ 0.1