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		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Fair value of net investment hedge	$ 58,329		$ 58,329		$ 57,683
Unrealized gain or loss, net of related income tax effects, on the net investment hedge recognized in comprehensive income	704	(98)	(399)	1,362
Short-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of net investment hedge	14,582		14,582		14,421
Unrealized gain or loss, net of related income tax effects, on the net investment hedge recognized in comprehensive income	176	(20)	(100)	272
Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of net investment hedge	43,747		43,747		43,262
Unrealized gain or loss, net of related income tax effects, on the net investment hedge recognized in comprehensive income	$ 528	$ (78)	$ (299)	$ 1,090