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Goodwill And Intangible Assets (Schedule Of Carrying Value And Accumulated Amortization For Intangible Assets) (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]    
Amortizable Intangible Assets, Gross Carrying Amount $ 1,034.7 $ 1,036.0
Accumulated Amortization (538.7) (458.6)
Amortizable Intangible Assets, Net 496.0 577.4
Indefinite-lived Intangible Assets 240.4  
Total Intangible Assets, Gross Carrying Amount 2,045.8 2,100.4
Total Intangible Assets, Net 1,507.1 1,641.8
Tradenames [Member]    
Finite-Lived Intangible Assets [Line Items]    
Indefinite-lived Intangible Assets 1,011.1 1,064.4
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable Intangible Assets, Gross Carrying Amount 694.9 701.3
Accumulated Amortization (329.7) (275.3)
Amortizable Intangible Assets, Net 365.2 426.0
Technology Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable Intangible Assets, Gross Carrying Amount 179.4 181.5
Accumulated Amortization (90.9) (78.2)
Amortizable Intangible Assets, Net 88.5 103.3
Tradenames [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable Intangible Assets, Gross Carrying Amount 160.4 153.2
Accumulated Amortization (118.1) (105.1)
Amortizable Intangible Assets, Net $ 42.3 $ 48.1