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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
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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

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