Borrowed Funds (Schedule Of Borrowings) (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2025 USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 7,898,558
Line of Credit Facility, Remaining Borrowing Capacity	3,046,020
Federal Reserve Discount Window, borrowing capacity	4,852,538
Line of Credit Facility, Increase, Accrued Interest	17,681
Line of Credit Facility, Current Borrowing Capacity, Including Accrued Interest	4,870,219
FRB-Cleveland
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	505,439
Line of Credit Facility, Remaining Borrowing Capacity	505,439
Federal Reserve Discount Window, borrowing capacity	0
Federal Funds Purchased
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	455,000
Line of Credit Facility, Remaining Borrowing Capacity	455,000
Federal Reserve Discount Window, borrowing capacity	0
Federal Home Loan Bank of Cincinnati
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	6,938,119
Line of Credit Facility, Remaining Borrowing Capacity	2,085,581
Federal Reserve Discount Window, borrowing capacity	$ 4,852,538