Restructuring Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 01, 2012
Year 2007 Restructuring Program [Member] | Contract Termination Costs [Member]
Restructuring liability [Roll Forward]
Balance, beginning of period	$ 0.8
Additional Provisions (Reversals)	0
Cash expenditures	(0.3)
Balance, end of period	0.5
Reduction in workforce (in numer of employees)	250
Year 2009 Restructuring Program [Member] | Employee Severance and Other Employee Benefits [Member]
Restructuring liability [Roll Forward]
Balance, beginning of period	0.1
Additional Provisions (Reversals)	0
Cash expenditures	(0.1)
Balance, end of period	0
Reduction in workforce (in numer of employees)	200
Other Restructuring Program [Member] | Employee Severance and Other Employee Benefits [Member]
Restructuring liability [Roll Forward]
Balance, beginning of period	0.5
Additional Provisions (Reversals)	0
Cash expenditures	(0.2)
Balance, end of period	$ 0.3