Goodwill And Intangible Assets (Schedule Of Carrying Value And Accumulated Amortization For Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 30, 2018	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,033.4	$ 1,036.0
Accumulated Amortization	(490.1)	(458.6)
Net	543.3	577.4
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	698.8	701.3
Accumulated Amortization	(300.7)	(275.3)
Net	398.1	426.0
Technology Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	181.4	181.5
Accumulated Amortization	(81.0)	(78.2)
Net	100.4	103.3
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	153.2	153.2
Accumulated Amortization	(108.4)	(105.1)
Net	$ 44.8	$ 48.1