Deposits (Summary Of Deposit Account Balances) (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Sep. 30, 2024 |
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| Deposits [Abstract] | ||
| Checking accounts | $ 810,629 | $ 829,924 |
| Savings accounts, excluding money market accounts | 1,101,088 | 1,127,772 |
| Money market accounts | 143,339 | 193,074 |
| Certificates of deposit | 8,271,633 | 8,021,123 |
| Subtotal deposits | 10,326,689 | 10,171,893 |
| Accrued interest | 14,810 | 23,186 |
| Total deposits | $ 10,341,499 | $ 10,195,079 |
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- Definition Interest Bearing Deposit Liabilities Without Accrued Interest Payable No definition available.
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- Definition Amount of accrued but unpaid interest on deposit liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Total amount of interest-bearing domestic deposit liabilities, which may include brokered, retail, demand, checking, notice of withdrawal, money market and other interest-bearing deposits. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic certificate of deposit liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic checking deposit liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic money market demand account deposit liabilities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest-bearing domestic savings deposit liabilities. Saving deposits bear interest and have no stated maturity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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