Hedging Activities (Fair Value Of Net Investment Hedge Within Condensed Consolidated Balance Sheets And Unrealized Gain Or Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Fair value of net investment hedge	$ 60,027		$ 60,027		$ 57,683
Unrealized gain or loss, net of related income tax effects, on the net investment hedge recognized in comprehensive income	(1,048)	30	(1,447)	(1,332)
Short-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of net investment hedge	15,007		15,007		14,421
Unrealized gain or loss, net of related income tax effects, on the net investment hedge recognized in comprehensive income	(262)	281	(362)	9
Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of net investment hedge	45,020		45,020		43,262
Unrealized gain or loss, net of related income tax effects, on the net investment hedge recognized in comprehensive income	$ (786)	$ (251)	$ (1,085)	$ (1,341)