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Retirement Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Estimated future employer contributions to defined benefit plans in current fiscal year     $ 6,000  
Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Estimated future employer contributions to defined benefit plans in current fiscal year     11,000  
U.S. Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 1,570 $ 1,623 4,596 $ 4,813
Expected return on plan assets (2,223) (2,179) (6,859) (6,795)
Net amortization: Net actuarial loss (gain) 1,101 692 2,459 1,662
Net periodic pension (benefit) cost 448 136 196 (320)
Defined benefit plan, contributions by employer     4,000  
U.S. Retiree Healthcare Plan        
Defined Benefit Plan Disclosure [Line Items]        
Service cost (91) 196 433 594
Interest cost 116 111 352 347
Expected return on plan assets (129) (112) (373) (326)
Net amortization: Prior service cost (credit)   (13)   (39)
Net amortization: Net actuarial loss (gain)   (18)   (26)
Net periodic pension (benefit) cost (104) 164 412 550
Non-U.S. Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1,337 1,212 4,011 3,636
Interest cost 402 592 1,206 1,776
Expected return on plan assets (410) (392) (1,230) (1,176)
Net amortization: Prior service cost (credit) 14 (47) 42 (141)
Net amortization: Net actuarial loss (gain) 273 97 819 291
Net periodic pension (benefit) cost $ 1,616 $ 1,462 $ 4,848 $ 4,386