v3.25.4

Loans And Allowance For Credit Losses (Schedule Of Recorded Investment In Loan Receivables That Are Past Due) (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Sep. 30, 2025
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total | $ 15,816,672 | $ 15,737,556
30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 14,996 | 12,548
60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,586 | 4,842
Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,322 | 17,261
Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 36,904 | 34,651
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 15,779,768 | 15,702,905
Other Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 8,515 | 8,153
Other Loans | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Other Loans | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Other Loans | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Other Loans | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Other Loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 8,515 | 8,153
Real Estate Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 15,808,157 | 15,729,403
Real Estate Loans | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 14,996 | 12,548
Real Estate Loans | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,586 | 4,842
Real Estate Loans | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,322 | 17,261
Real Estate Loans | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 36,904 | 34,651
Real Estate Loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 15,771,253 | 15,694,752
Real Estate Loans | Residential Core |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 10,676,463 | 10,830,505
Real Estate Loans | Residential Core | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 7,841 | 6,494
Real Estate Loans | Residential Core | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,339 | 2,855
Real Estate Loans | Residential Core | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 10,461 | 10,470
Real Estate Loans | Residential Core | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 20,641 | 19,819
Real Estate Loans | Residential Core | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 10,655,822 | 10,810,686
Real Estate Loans | Residential Home Today |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 34,323 | 35,471
Real Estate Loans | Residential Home Today | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 845 | 752
Real Estate Loans | Residential Home Today | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 354 | 266
Real Estate Loans | Residential Home Today | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 714 | 560
Real Estate Loans | Residential Home Today | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,913 | 1,578
Real Estate Loans | Residential Home Today | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 32,410 | 33,893
Real Estate Loans | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,747 | 7,272
Real Estate Loans | Construction | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Real Estate Loans | Construction | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Real Estate Loans | Construction | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Real Estate Loans | Construction | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Real Estate Loans | Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,747 | 7,272
Real Estate Loans | Home Equity Line of Credit |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,276,940 | 4,100,665
Real Estate Loans | Home Equity Line of Credit | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,406 | 4,791
Real Estate Loans | Home Equity Line of Credit | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,406 | 1,382
Real Estate Loans | Home Equity Line of Credit | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,075 | 5,296
Real Estate Loans | Home Equity Line of Credit | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 11,887 | 11,469
Real Estate Loans | Home Equity Line of Credit | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,265,053 | 4,089,196
Real Estate Loans | Home Equity Loan |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 815,684 | 755,490
Real Estate Loans | Home Equity Loan | 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 904 | 511
Real Estate Loans | Home Equity Loan | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 487 | 339
Real Estate Loans | Home Equity Loan | Equal to Greater than 90 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,072 | 935
Real Estate Loans | Home Equity Loan | Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,463 | 1,785
Real Estate Loans | Home Equity Loan | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 813,221 | $ 753,705

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