Derivatives (Schedule Of Interest Rate Swap Derivative Financial Instruments) (Details) - Cash Flow Hedging [Member] - Interest Rate Swaps [Member] $ in Millions	12 Months Ended
Sep. 30, 2018 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 300.0
Remaining Years	1 year 7 months 6 days

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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