Derivative Financial Instruments (Narrative) (Details) $ in Millions	9 Months Ended
	Jun. 27, 2020 USD ($)
Commodity contracts
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 12
Interest rate hedges
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	3
Treasury Rate Locks
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified Over Life of Forecasted Fixed-Rate Debt	$ 18