Commitments (Narrative) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Guarantor Obligations [Line Items]
Operating Leases, Rent Expense	$ 186,000,000	$ 172,000,000	$ 165,000,000
Lease, Maximum Initial Term	7 years
Guarantor Obligations, Current Carrying Value	$ 0	0
Potential maximum obligation under cash flow assistance program	380,000,000
Total receivables under cash flow assistance program	0	2,000,000
Estimated uncollectible receivables under cash flow assistance program	0	$ 0
Industrial Revenue Bonds [Member]
Guarantor Obligations [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Asset	$ 505,000,000
Guarantee of Indebtedness of Others [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Period	10 years
Maximum potential amount	$ 28,000,000
Residual Value Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum potential amount	$ 109,000,000
Guarantor Obligations, Maximum Exposure, Remaining Lease Period	10 years
Amount recoverable through various recourse provisions	$ 100,000,000