Derivative Instruments (Schedule Of Effect Of Derivative Instruments, Gain (Loss) In Statement Of Financial Performance) (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022
Designated as Hedging Instrument \| Cash Flow Hedge
Derivatives, Fair Value [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Borrowings	Interest Expense, Borrowings
Amount of gain/(loss) reclassified from AOCI	$ 6,624	$ (10,801)
Designated as Hedging Instrument \| Cash Flow Hedge \| Other Comprehensive Income (Loss)
Derivatives, Fair Value [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	9,104	$ 15,893
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional Value	8,782		$ 9,170
Derivative, Fair Value, Net	$ (29)		(333)
Not Designated as Hedging Instrument \| Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income
Total	$ 304	$ (278)
Not Designated as Hedging Instrument \| Interest Rate Lock Commitments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Value	4,385		9,170
Derivative, Fair Value, Net	$ (29)		$ (333)
Not Designated as Hedging Instrument \| Forward Commitments For Sale Of Mortgage Loans
Derivatives, Fair Value [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net gain on the sale of loans	Net gain on the sale of loans
Total	$ 0	$ (22)

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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-Publisher FASB
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Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative.

+ References

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Indicates line item in statement of income or comprehensive income that includes gain (loss) from effective portion of derivative instrument reclassified from accumulated other comprehensive income (AOCI) into income.

+ References

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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Nominal or face amount used to calculate payment on derivative.

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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.

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No definition available.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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-Publisher FASB
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