Business Segment Information (Total Net Revenue By Product Group) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2011	Jun. 27, 2010	Jun. 26, 2011	Jun. 27, 2010
Total net revenues	$ 391,286	$ 358,427	$ 745,290	$ 701,964
Critical Care [Member]
Total net revenues	253,648	233,673	490,786	459,602
Surgical Care [Member]
Total net revenues	72,891	66,218	137,909	129,337
Cardiac Care [Member]
Total net revenues	22,140	18,769	39,809	37,098
OEM And Development Services [Member]
Total net revenues	42,373	38,961	76,240	74,294
Other [Member]
Total net revenues	$ 234	$ 806	$ 546	$ 1,633