Goodwill And Intangible Assets (Goodwill Activity By Reportable Operating Segment) (Details) (USD $)	9 Months Ended
	Jul. 01, 2011
Balance at October 1, 2010	$ 208,451,000	[1]
Acquisition of businesses	3,400,000
Payment or accrual of contingent consideration	900,000
Foreign currency translation adjustments	3,300,000
Balance at July 1, 2011	216,063,000
Oncology Systems [Member]
Balance at October 1, 2010	126,700,000
Acquisition of businesses	3,400,000
Balance at July 1, 2011	130,100,000
X-ray Products [Member]
Balance at October 1, 2010	4,500,000
Payment or accrual of contingent consideration	900,000
Balance at July 1, 2011	5,400,000
Other [Member]
Balance at October 1, 2010	77,300,000
Foreign currency translation adjustments	3,300,000
Balance at July 1, 2011	$ 80,600,000

[1] The condensed consolidated balance sheet as of October 1, 2010 was derived from audited financial statements as of that date, but does not include all disclosures required by accounting principles generally accepted in the United States of America.