Impairment Of Goodwill (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Apr. 01, 2012	Sep. 30, 2012
Goodwill [Line Items]
Impairment of goodwill	$ 332,000	$ 332,128
Vascular [Member]
Goodwill [Line Items]
Impairment of goodwill	220,000
Anesthesia/Respiratory [Member]
Goodwill [Line Items]
Impairment of goodwill	107,000
Cardiac [Member]
Goodwill [Line Items]
Impairment of goodwill	$ 5,000

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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+ Details