Employee Benefit And Retirement Plans (Schedule Of Other Postretirement Benefit Costs) (Details) (Other Postretirement Benefit Plans, Defined Benefit [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost-benefits earned during the period	$ 0.3	$ 0.3
Interest cost on projected benefit obligation	1.4	1.8
Amortization of prior service benefit and actuarial loss, net	(0.4)	(0.3)
Defined Benefit Plan, Net Periodic Benefit Cost	$ 1.3	$ 1.8