Debt Debt (Narrative) (Details) - USD ($)	3 Months Ended
Dec. 30, 2018	Sep. 30, 2018
Two Point Two Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.20%
Debt Instrument, Face Amount	$ 500,000,000	$ 500,000,000
Two Point Two Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.75%
Debt Instrument, Face Amount	$ 500,000,000	500,000,000
PointThreeSevenTwoPercentageYenDenominatedSeniorNotes [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.372%
Debt Instrument, Face Amount	$ 770,300,000	748,400,000
Three Point One Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.50%
Debt Instrument, Face Amount	$ 600,000,000	$ 600,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt covenant compliance	The indentures under which the above notes were issued require us to maintain compliance with certain covenants, including limits on future liens and sale and leaseback transactions on certain material properties. As of December 30, 2018, we were in compliance with all applicable covenants.
Commercial Paper [Member]
Debt Instrument [Line Items]
Outstanding commercial paper	$ 0

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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-SubTopic 210
-Section S99
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States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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