Restructuring And Impairment Charges (Summary Of Activity In Restructuring Accrual) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 7	$ 7
Charges	14	31	56
Non-cash asset impairment	(6)	(20)
Cash payments	(11)	(11)
Ending balance	4	7	7
Employee Severance And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	4	4
Charges	5	7
Cash payments	(7)	(7)
Ending balance	2	4
Facilities Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	3	3
Charges	3	4
Cash payments	(4)	(4)
Ending balance	2	3
Non-Cash Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges	6	20
Non-cash asset impairment	$ (6)	$ (20)