Retirement Plan (Schedule Of Projected Benefit Obligations And Change In Fair Value Of Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Defined Benefit Plan Disclosure [Line Items]
Service cost
Interest cost	7	8	9
Plan assets at beginning of period	129
Plan assets at end of period	141	129
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
PBO at beginning of period	207	179
Interest cost	7	8
Actuarial loss (gain)	(27)	29
Benefits paid	(9)	(9)
PBO at end of period	178	207
Plan assets at beginning of period	129	109
Actual return on plan assets	14	20
Company contributions	7	9
Plan assets at end of period	141	129
Net amount recognized	(37)	(78)
Retiree Health Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
PBO at beginning of period	3	4
Benefits paid	(1)	(1)
PBO at end of period	2	3
Company contributions		1
Net amount recognized	$ (2)	$ (3)