Pensions And Other Postretirement Benefits (Amounts Recognized In The Consolidated Balance Sheets) (Details) (USD $) In Millions	12 Months Ended
	Oct. 01, 2011	Oct. 02, 2010
Non-Qualified Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued benefit liability	$ (62)	$ (42)
Unrecognized actuarial loss	17	1
Unrecognized prior service (cost)/credit	2	3
Net amount recognized	(43)	(38)
Qualified Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued benefit liability	(25)	(23)
Unrecognized actuarial loss	45	40
Unrecognized prior service (cost)/credit	0	0
Net amount recognized	20	17
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued benefit liability	(44)	(45)
Unrecognized actuarial loss	0	0
Unrecognized prior service (cost)/credit	(5)	(6)
Net amount recognized	$ (49)	$ (51)