Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	Sep. 27, 2013	Sep. 28, 2012
Property, Plant and Equipment:
Accumulated depreciation	$ (3,025)	$ (3,055)
Property, plant and equipment, net	1,677	1,670
Land
Property, Plant and Equipment:
Property, plant and equipment	44	44
Buildings
Property, Plant and Equipment:
Property, plant and equipment	388	358
Subscriber systems
Property, Plant and Equipment:
Property, plant and equipment	2,971	3,063
Machinery and equipment
Property, Plant and Equipment:
Property, plant and equipment	1,232	1,158
Construction in progress
Property, Plant and Equipment:
Property, plant and equipment	$ 67	$ 102