Restructuring And Impairments (Summary Of Restructuring And Impairment Costs) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 01, 2012
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	$ 2.7
New Charges	2.5
Cash Paid	(1.5)
Reserve Release	(0.1)
Accrual Balance, Ending balance	3.6
Employee Separation Costs [Member] | 2010 Infrastructure Realignment Program [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	1.0
Cash Paid	(0.3)
Accrual Balance, Ending balance	0.7
Employee Separation Costs [Member] | 2011 Infrastructure Realignment Program [Member]
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	1.7
New Charges	1.0
Cash Paid	(0.3)
Reserve Release	(0.1)
Accrual Balance, Ending balance	2.3
Employee Separation Costs [Member] | 2012 Infrastructure Realignment Program [Member]
Restructuring Cost and Reserve [Line Items]
New Charges	1.1
Cash Paid	(0.5)
Accrual Balance, Ending balance	0.6
Facility Closure Costs [Member] | 2012 Infrastructure Realignment Program [Member]
Restructuring Cost and Reserve [Line Items]
New Charges	0.4
Cash Paid	(0.4)
Accrual Balance, Ending balance	$ 0