v3.25.2
Loans And Allowance For Credit Losses (Schedule Of Recorded Investment In Loan Receivables That Are Past Due) (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Sep. 30, 2024
Financing Receivable, Past Due [Line Items]    
Loans held for investment $ 15,668,537 $ 15,392,061
30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 14,105 12,502
60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 4,363 5,452
Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 15,800 13,934
Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 34,268 31,888
Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 15,634,269 15,360,173
Other Loans    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 7,745 5,705
Other Loans | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Other Loans | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Other Loans | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Other Loans | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Other Loans | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 7,745 5,705
Real Estate Loans    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 15,660,792 15,386,356
Real Estate Loans | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 14,105 12,502
Real Estate Loans | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 4,363 5,452
Real Estate Loans | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 15,800 13,934
Real Estate Loans | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 34,268 31,888
Real Estate Loans | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 15,626,524 15,354,468
Real Estate Loans | Residential Core    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 10,996,430 11,408,854
Real Estate Loans | Residential Core | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 6,334 7,554
Real Estate Loans | Residential Core | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 2,801 4,024
Real Estate Loans | Residential Core | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 9,900 8,881
Real Estate Loans | Residential Core | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 19,035 20,459
Real Estate Loans | Residential Core | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 10,977,395 11,388,395
Real Estate Loans | Residential Home Today    
Financing Receivable, Past Due [Line Items]    
Loans held for investment [1] 37,009 40,471
Real Estate Loans | Residential Home Today | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 893 814
Real Estate Loans | Residential Home Today | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 336 307
Real Estate Loans | Residential Home Today | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 667 693
Real Estate Loans | Residential Home Today | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 1,896 1,814
Real Estate Loans | Residential Home Today | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 35,113 38,657
Real Estate Loans | Construction    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 7,651 10,015
Real Estate Loans | Construction | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Real Estate Loans | Construction | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Real Estate Loans | Construction | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Real Estate Loans | Construction | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 0 0
Real Estate Loans | Construction | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 7,651 10,015
Real Estate Loans | Home Equity Line of Credit    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 3,919,031 3,360,143
Real Estate Loans | Home Equity Line of Credit | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 5,592 3,556
Real Estate Loans | Home Equity Line of Credit | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 1,189 1,014
Real Estate Loans | Home Equity Line of Credit | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 4,657 4,078
Real Estate Loans | Home Equity Line of Credit | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 11,438 8,648
Real Estate Loans | Home Equity Line of Credit | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 3,907,593 3,351,495
Real Estate Loans | Home Equity Loan    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 700,671 566,873
Real Estate Loans | Home Equity Loan | 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 1,286 578
Real Estate Loans | Home Equity Loan | 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 37 107
Real Estate Loans | Home Equity Loan | Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 576 282
Real Estate Loans | Home Equity Loan | Past Due    
Financing Receivable, Past Due [Line Items]    
Loans held for investment 1,899 967
Real Estate Loans | Home Equity Loan | Current    
Financing Receivable, Past Due [Line Items]    
Loans held for investment $ 698,772 $ 565,906
[1] No new originations of Home Today loans since fiscal year 2016.