Commitments And Contingencies Commitments (Details) (USD $) In Millions, unless otherwise specified			6 Months Ended
	Mar. 29, 2014	Sep. 28, 2013	Mar. 29, 2014 Guarantee of Indebtedness of Others [Member]	Mar. 29, 2014 Residual Value Guarantees [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Period (in years)			10 years
Maximum potential amount			$ 53	$ 50
Guarantor Obligations, Maximum Exposure, Remaining Lease Period (in years)				14 years
Amount recoverable through various recourse provisions				44
Potential maximum obligation under cash flow assistance programs	310
Total receivables under cash flow assistance programs	32	44
Uncollectible receivables estimated under cash flow assistance programs	$ 10	$ 15