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Employee Benefit Plans (Fair Value Of Pension Plan Assets By Asset Category) (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 49.6 $ 49.0
Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 8.2 8.5
Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 41.4 40.5
Fair Value, Inputs, Level 3 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Foreign Cash And Cash Equivalents [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 8.2 8.5
Foreign Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 8.2 8.5
Foreign Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Foreign Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Foreign Fixed Income Securities [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 2.3 2.4
Foreign Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Foreign Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 2.3 2.4
Foreign Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Life Insurance Contracts [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 38.7 37.6
Life Insurance Contracts [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Life Insurance Contracts [Member] | Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 38.7 37.6
Life Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Other [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0.4 0.5
Other [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets
Other [Member] | Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0.4 0.5
Other [Member] | Fair Value, Inputs, Level 3 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets