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Restructuring Activities (Reconciliation Of Expenses By Type) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Restructuring Cost and Reserve [Line Items]    
Restructuring expenses $ 1.2us-gaap_RestructuringCharges $ 4.2us-gaap_RestructuringCharges
Employee termination expenses    
Restructuring Cost and Reserve [Line Items]    
Restructuring expenses 0.2us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
1.4us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
Facility related costs    
Restructuring Cost and Reserve [Line Items]    
Restructuring expenses 0.2us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
1.6us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_FacilityClosingMember
Other expenses    
Restructuring Cost and Reserve [Line Items]    
Restructuring expenses $ 0.8us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_OtherRestructuringMember
$ 1.2us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_OtherRestructuringMember