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FHLB Advances and Other Borrowings (Tables) | 12 Months Ended
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Sep. 30, 2021
Federal Home Loan Banks [Abstract] |
Maturity dates of outstanding FHLB advances | The table below shows the contractual maturity dates of outstanding FHLB advances.
| September 30, 2021 | September 30, 2020
| (In thousands)
FHLB advances |  |
Within 1 year | $ | 1,320,000 |  | $ | 1,830,000 |
1 to 3 years | 400,000 |  | 520,000 |
3 to 5 years | — |  | 350,000 |
More than 5 years | — |  | — |
| $ | 1,720,000 |  | $ | 2,700,000 |
Weighted average cost and amount of advances | Financial information pertaining to the weighted-average cost and the amount of FHLB advances were as follows.
| 2021 | 2020 | 2019
| ($ in thousands)
Weighted average interest rate, including cash flow hedges, at end of year | 1.51 | % | 1.79 | % | 2.49 | %
Weighted daily average interest rate, including cash flow hedges, during the year | 1.98 | % | 2.03 | % | 2.69 | %
Daily average of FHLB advances during the year | $ | 2,234,027 |  | $ | 2,532,596 |  | $ | 2,533,890 |
Maximum amount of FHLB advances at any month end | $ | 2,700,000 |  | $ | 3,050,000 |  | $ | 2,665,000 |
Interest expense during the year (including swap interest income and expense) | $ | 44,188 |  | $ | 51,445 |  | $ | 68,190 |

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- Definition Tabular disclosure of advances made and reported by Federal Home Loan Bank (FHLBank). + References No definition available. + Details
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