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Employee Benefit Plans (Components of Net Periodic Benefit Cost (Credit)) (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Sep. 29, 2013
Sep. 30, 2012
Defined Benefit Pension Benefits [Member]
       
Components of net periodic benefit cost (credit)        
Service cost $ 916,000 $ 977,000 $ 2,757,000 $ 2,934,000
Interest cost 5,312,000 5,774,000 15,925,000 17,381,000
Expected return on plan assets (6,261,000) (5,140,000) (18,778,000) (15,422,000)
Amortization of prior service (67,000) (60,000) (201,000) (180,000)
Net periodic benefit cost (credit) (100,000) 1,551,000 (297,000) 4,713,000
Defined Benefit Pension Plan in the United States [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Contributions by Employer     37,000,000  
Foreign Pension Plans, Defined Benefit [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Contributions by Employer     17,900,000  
Postretirement Medical Benefits [Member]
       
Components of net periodic benefit cost (credit)        
Service cost 28,000 28,000 85,000 85,000
Interest cost 36,000 37,000 107,000 111,000
Expected return on plan assets (241,000) (219,000) (723,000) (657,000)
Amortization of prior service 0 0 0 0
Net periodic benefit cost (credit) (177,000) (154,000) (531,000) (461,000)
United Kingdom Pension Plans, Defined Benefit [Member]
       
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Contributions by Employer     $ 10,000,000