Retirement Plans - Net Pension Income or Postretirement Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
(Income)/expense, net	$ (626,000)	$ 545,000
Domestic Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	48	648
Interest cost	3,058	2,711
Expected return on plan assets	(5,208)	(5,042)
Amortization of prior service cost		149
Amortization of gain / loss	1,413	1,921
(Income)/expense, net	(689)	387
Foreign Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	21	28
Interest cost	150	132
Expected return on plan assets	(167)	(100)
Amortization of prior service cost
Amortization of gain / loss	59	98
(Income)/expense, net	63	158
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	1	2
Interest cost	57	56
Amortization of gain / loss	(39)
(Income)/expense, net	$ 19	$ 58