Basis of Presentation and Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 27, 2019	Sep. 28, 2019
Recently Adopted Accounting Pronouncements
Practical Expedient, Package	true
Practical Expedient, Hindsight	true
ROU assets	$ 506
Lease liabilities	$ 519
ASU 2016-02
Recently Adopted Accounting Pronouncements
ROU assets		$ 520
Lease liabilities		$ 520