Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 01, 2011
Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.2	$ 0.2
Interest cost	1.1	1.1
Expected return on plan assets	(1.0)	(1.0)
Amortization of prior service cost	0.2	0.1
Net periodic benefit cost	0.5	0.4
Nonpension Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.1	0.1
Interest cost	0.3	0.3
Expected return on plan assets	0	0
Amortization of prior service cost	0	0
Net periodic benefit cost	$ 0.4	$ 0.4