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Borrowing Arrangements (Components Of Long-Term Debt) (Details) - USD ($)
$ in Millions
Sep. 30, 2017
Sep. 30, 2016
Debt $ 486.5 $ 490.7
Debt Issuance Costs, Net (7.4)  
Current portion of long-term debt (5.6) (5.6)
Long-term debt, excluding current maturities 475.0 478.8
Revolving Credit Facility [Member]    
Debt 0.0 0.0
Debt Issuance Costs, Net (1.5)  
Secured Debt [Member]    
Debt 484.8 489.4
Debt Issuance Costs, Net (5.9) (6.3)
Other [Member]    
Debt $ 1.7 $ 1.3