Derivatives (Schedule Of Fair Value Of Outstanding Derivative Instruments) (Details) - USD ($) $ in Millions	Jun. 28, 2020	Sep. 30, 2019
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 2.6	$ 9.5
Derivative Liabilities	2.4	2.3
Commodity Swaps | Other receivables | Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	0.1	0.0
Commodity Swaps | Accounts payable | Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.1	0.2
Foreign Exchange Contracts | Other receivables | Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	2.0	7.8
Foreign Exchange Contracts | Other receivables | Not Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	0.5	1.2
Foreign Exchange Contracts | Deferred charges and other | Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Assets	0.0	0.5
Foreign Exchange Contracts | Accounts payable | Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.6	0.2
Foreign Exchange Contracts | Accounts payable | Not Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1.4	1.9
Foreign Exchange Contracts | Other long term liabilities | Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.3	$ 0.0