Reconciliation of Segment Operating Results to Companys Earnings from Continuing Operations before Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Earnings from operations before taxes	$ 612	$ 596	$ 589
Interest income (expense), net	3	2	1
Oncology Systems
Segment Reporting Information [Line Items]
Earnings from operations before taxes	512	505	507
X-Ray Products
Segment Reporting Information [Line Items]
Earnings from operations before taxes	144	131	118
Total Reportable Segments
Segment Reporting Information [Line Items]
Earnings from operations before taxes	656	636	625
Other
Segment Reporting Information [Line Items]
Earnings from operations before taxes	(25)	(32)	(32)
Corporate
Segment Reporting Information [Line Items]
Earnings from operations before taxes	$ (22)	$ (10)	$ (5)