Financial Instruments and Fair Value Measurements, Fair Value of Derivatives and Location on Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Oct. 01, 2016
Foreign Currency Forward Contracts [Member] | Not Designated [Member] | Other Assets [Member]
Derivative Instruments [Abstract]
Fair value of derivative instruments	$ 0	$ 3
Interest Rate Swaps [Member] | Not Designated [Member] | Other Assets [Member]
Derivative Instruments [Abstract]
Fair value of derivative instruments	13	0
Interest Rate Swaps [Member] | Not Designated [Member] | Other Long-Term Liabilities [Member]
Derivative Instruments [Abstract]
Fair value of derivative instruments	13	0
Interest Rate Swaps [Member] | Designated [Member] | Other Assets [Member]
Derivative Instruments [Abstract]
Fair value of derivative instruments	1	0
Interest Rate Swaps [Member] | Designated [Member] | Other Long-Term Liabilities [Member]
Derivative Instruments [Abstract]
Fair value of derivative instruments	$ 15	$ 48