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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- Definition

Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

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Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Loans And Allowance For Credit Losses (Schedule Of Financial Effect Of Loan Modifications) (Details) - Real Estate Loans	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Minimum \| Residential Non Home Today \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	5.49%	3.39%	5.52%	3.97%
Minimum \| Residential Home Today \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	4.90%	5.63%	4.90%	3.91%
Minimum \| Home Equity Line of Credit \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	6.57%	7.99%	6.74%	6.46%
Minimum \| Home Equity Loan \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	0.00%	0.00%	0.00%	0.00%
Maximum \| Residential Non Home Today \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	3.50%	2.00%	3.50%	2.07%
Maximum \| Residential Non Home Today \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Term Increase from Modification	6 years 9 months 18 days	1 year 7 months 6 days	10 years 7 months 6 days	10 years 2 months 12 days
Maximum \| Residential Home Today \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	3.89%	2.00%	3.89%	2.00%
Maximum \| Residential Home Today \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Term Increase from Modification	3 years 4 months 24 days	10 years 4 months 24 days	2 years 6 months	14 years 10 months 24 days
Maximum \| Home Equity Line of Credit \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	3.84%	3.50%	3.71%	3.18%
Maximum \| Home Equity Line of Credit \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Term Increase from Modification	24 years 2 months 12 days	7 years 3 months 18 days	22 years 2 months 12 days	10 years 7 months 6 days
Maximum \| Home Equity Loan \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Interest Rate Decrease from Modification	0.00%	0.00%	0.00%	0.00%
Maximum \| Home Equity Loan \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans, Modified, Weighted Average Term Increase from Modification	0 years	0 years	0 years	0 years