Pension And Other Postretirement Benefits Liabilities (Schedule Of Components Of Net Pension And Postretirement Periodic Benefit Cost (Income)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
U.S. Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost
Interest cost	2,983	3,029
Expected return on plan assets	(2,592)	(2,688)
Transition asset
Actuarial loss	888	563
Prior service cost
Net pension and postretirement periodic benefit cost (income)	1,279	904
Non U.S. Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost
Interest cost	494	528
Expected return on plan assets	(532)	(517)
Transition asset	(33)	(33)
Actuarial loss	163	163
Prior service cost
Net pension and postretirement periodic benefit cost (income)	92	141
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost
Interest cost	34	40
Expected return on plan assets
Transition asset
Actuarial loss
Prior service cost	(41)	(40)
Net pension and postretirement periodic benefit cost (income)	$ (7)