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, 2012	Mar. 31, 2011
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost-benefits earned during the period	$ 0.3	$ 0.3
Interest cost on projected benefit obligation	1.8	2.1
Amortization of prior service benefit and actuarial loss, net	(0.3)	(0.3)
Net other postretirement benefit costs	$ 1.8	$ 2.1