Employee Benefit Plans (Components of Net Periodic Benefit Cost (Credit)) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Defined Benefit Pension Benefits [Member]
Components of net periodic benefit cost (credit)
Service cost	$ 977,000	$ 972,000	$ 1,957,000	$ 1,944,000
Interest cost	5,792,000	6,321,000	11,607,000	12,639,000
Expected return on plan assets	(5,140,000)	(5,649,000)	(10,282,000)	(11,297,000)
Amortization of prior service	(60,000)	(56,000)	(120,000)	(112,000)
Net periodic benefit cost (credit)	1,569,000	1,588,000	3,162,000	3,174,000
Defined Benefit Pension Plan in the United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	17,000,000
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	5,500,000
Postretirement Medical Benefits [Member]
Components of net periodic benefit cost (credit)
Service cost	28,000	21,000	56,000	43,000
Interest cost	37,000	41,000	74,000	81,000
Expected return on plan assets	(219,000)	(221,000)	(438,000)	(442,000)
Amortization of prior service	0	(63,000)	0	(126,000)
Net periodic benefit cost (credit)	$ (154,000)	$ (222,000)	$ (308,000)	$ (444,000)