Employee Benefit Plans (Postretirement Benefits Other Than Pensions) (Details) (Other Postretirement Benefit Plans, Defined Benefit [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost	$ 0	$ 0.1
Interest cost	0.1	0.1
Net amortization and deferral	0	0
Net pension expense	$ 0.1	$ 0.2