Business Combinations (Schedule Of Preliminary Purchase Price Allocation) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010	Dec. 30, 2011 Tekla Corporation [Member]	Jul. 08, 2011 Tekla Corporation [Member]		Dec. 30, 2011 Other Acquisitions [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value of total purchase consideration	$ 797,801	$ 133,415	$ 41,639	$ 457,387	$ 457,387	[1]	$ 340,414
Fair value of net assets acquired	23,121	26,385	1,187	10,976			12,145
Identified intangible assets	374,928	57,802	21,475	207,674	207,674		167,254
Deferred taxes	(96,330)	(7,877)	(7,766)	(53,995)			(42,335)
Noncontrolling interests		(7,804)
Bargain purchase		(832)
Goodwill	$ 496,082	$ 65,741	$ 26,743	$ 292,732	$ 292,732		$ 203,350

[1] Of the $457.4 million, $2.5 million was held in a cash account at the end of fiscal 2011 and represents the 0.54% of shares that were not yet acquired by the Company. In February, 2012 the Company purchased the remaining shares at the same per share price as was provided for the original 99.46% of shares obtained. Therefore, the non-controlling interest was valued based on that per-share price.