Fair Value Measurements (Financial Assets And Liabilities Carried At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2012	Dec. 31, 2011
Assets:
Available-for-sale securities, Assets	$ 402,900	$ 287,000
Liabilities:
Deferred compensation plans, Liabilities	63,400	58,200
Currency swap agreement, Liabilities	42,400	53,900
Quoted Prices In Active Market (Level 1)
Assets:
Available-for-sale securities, Assets	402,862	287,007
Liabilities:
Deferred compensation plans, Liabilities	0	0
Currency swap agreement, Liabilities	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Available-for-sale securities, Assets	0	0
Liabilities:
Deferred compensation plans, Liabilities	63,429	58,191
Currency swap agreement, Liabilities	42,413	53,888
Significant Unobservable Inputs (Level 3)
Assets:
Available-for-sale securities, Assets	0	0
Liabilities:
Deferred compensation plans, Liabilities	0	0
Currency swap agreement, Liabilities	$ 0	$ 0