Derivatives (Schedule Of Fair Value Of Outstanding Derivative Instruments) (Details) - USD ($) $ in Millions	Mar. 29, 2020	Sep. 30, 2019
Derivatives, Fair Value [Line Items]
Derivative assets	$ 13.7	$ 9.5
Derivative liabilities	1.4	2.3
Commodity Swaps [Member] | Accounts Payable [Member] | Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	0.7	0.2
Commodity Swaps [Member] | Other Long-term Liabilities [Member] | Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	0.1
Foreign Exchange Contract [Member] | Other Receivables [Member] | Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	5.6	7.8
Foreign Exchange Contract [Member] | Other Receivables [Member] | Not Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	7.7	1.2
Foreign Exchange Contract [Member] | Deferred Charges And Other [Member] | Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	0.4	0.5
Foreign Exchange Contract [Member] | Accounts Payable [Member] | Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	0.1	0.2
Foreign Exchange Contract [Member] | Accounts Payable [Member] | Not Designated as Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 0.5	$ 1.9