v3.25.4

Loans And Allowance For Credit Losses (Schedule Of Credit Quality Of Residential Loan Receivables By An Internally Assigned Grade) (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Sep. 30, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Total		$ 15,816,672	$ 15,737,556
Other Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total		8,515	8,153
Loans held for investment		8,515	8,153
Other Loans [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Total		0	0
Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total		15,808,157	15,729,403
Year One, Originated, Current Fiscal Year		381,475	1,080,363
Year Two, Originated, Fiscal Year before Current Fiscal Year		959,799	707,850
Year Three, Originated, Two Years before Current Fiscal Year		662,833	1,503,037
Year Four, Originated, Three Years before Current Fiscal Year		1,452,957	2,708,352
Year Five, Originated, Four Years before Current Fiscal Year		2,641,041	1,643,147
Originated, More than Five Years before Current Fiscal Year		5,433,112	3,985,989
Revolving Loans Amortized Cost Basis		4,220,391	4,043,334
Revolving Loans Converted to Term		56,549	57,331
Loans held for investment		15,808,157	15,729,403
Real Estate Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		381,475	1,080,011
Year Two, Originated, Fiscal Year before Current Fiscal Year		959,371	706,827
Year Three, Originated, Two Years before Current Fiscal Year		661,936	1,499,641
Year Four, Originated, Three Years before Current Fiscal Year		1,449,741	2,704,012
Year Five, Originated, Four Years before Current Fiscal Year		2,636,328	1,640,001
Originated, More than Five Years before Current Fiscal Year		5,404,890	3,960,397
Revolving Loans Amortized Cost Basis		4,204,294	4,028,977
Revolving Loans Converted to Term		51,558	51,726
Loans held for investment		15,749,593	15,671,592
Real Estate Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	197
Year Two, Originated, Fiscal Year before Current Fiscal Year		248	538
Year Three, Originated, Two Years before Current Fiscal Year		423	173
Year Four, Originated, Three Years before Current Fiscal Year		499	113
Year Five, Originated, Four Years before Current Fiscal Year		47	0
Originated, More than Five Years before Current Fiscal Year		586	691
Revolving Loans Amortized Cost Basis		5,932	4,679
Revolving Loans Converted to Term		269	370
Loans held for investment		8,004	6,761
Real Estate Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	155
Year Two, Originated, Fiscal Year before Current Fiscal Year		180	485
Year Three, Originated, Two Years before Current Fiscal Year		474	3,223
Year Four, Originated, Three Years before Current Fiscal Year		2,717	4,227
Year Five, Originated, Four Years before Current Fiscal Year		4,666	3,146
Originated, More than Five Years before Current Fiscal Year		27,636	24,901
Revolving Loans Amortized Cost Basis		10,165	9,678
Revolving Loans Converted to Term		4,722	5,235
Loans held for investment		50,560	51,050
Real Estate Loans | Residential Core
Financing Receivable, Credit Quality Indicator [Line Items]
Total		10,676,463	10,830,505
Year One, Originated, Current Fiscal Year		261,832	757,380
Year Two, Originated, Fiscal Year before Current Fiscal Year		665,391	468,504
Year Three, Originated, Two Years before Current Fiscal Year		443,426	1,375,043
Year Four, Originated, Three Years before Current Fiscal Year		1,333,708	2,664,389
Year Five, Originated, Four Years before Current Fiscal Year		2,599,808	1,629,210
Originated, More than Five Years before Current Fiscal Year		5,372,298	3,935,979
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		10,676,463	10,830,505
Real Estate Loans | Residential Core | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		261,832	757,380
Year Two, Originated, Fiscal Year before Current Fiscal Year		665,391	468,343
Year Three, Originated, Two Years before Current Fiscal Year		443,269	1,373,019
Year Four, Originated, Three Years before Current Fiscal Year		1,332,395	2,660,389
Year Five, Originated, Four Years before Current Fiscal Year		2,595,383	1,626,170
Originated, More than Five Years before Current Fiscal Year		5,347,634	3,914,125
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		10,645,904	10,799,426
Real Estate Loans | Residential Core | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Year Three, Originated, Two Years before Current Fiscal Year		0	0
Year Four, Originated, Three Years before Current Fiscal Year		0	0
Year Five, Originated, Four Years before Current Fiscal Year		0	0
Originated, More than Five Years before Current Fiscal Year		577	666
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		577	666
Real Estate Loans | Residential Core | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year		0	161
Year Three, Originated, Two Years before Current Fiscal Year		157	2,024
Year Four, Originated, Three Years before Current Fiscal Year		1,313	4,000
Year Five, Originated, Four Years before Current Fiscal Year		4,425	3,040
Originated, More than Five Years before Current Fiscal Year		24,087	21,188
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		29,982	30,413
Real Estate Loans | Residential Home Today
Financing Receivable, Credit Quality Indicator [Line Items]
Total		34,323	35,471
Year One, Originated, Current Fiscal Year	[1]	0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	0	0
Year Three, Originated, Two Years before Current Fiscal Year	[1]	0	0
Year Four, Originated, Three Years before Current Fiscal Year	[1]	0	0
Year Five, Originated, Four Years before Current Fiscal Year	[1]	0	0
Originated, More than Five Years before Current Fiscal Year	[1]	34,323	35,471
Revolving Loans Amortized Cost Basis	[1]	0	0
Revolving Loans Converted to Term	[1]	0	0
Loans held for investment	[1]	34,323	35,471
Real Estate Loans | Residential Home Today | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year	[1]	0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	0	0
Year Three, Originated, Two Years before Current Fiscal Year	[1]	0	0
Year Four, Originated, Three Years before Current Fiscal Year	[1]	0	0
Year Five, Originated, Four Years before Current Fiscal Year	[1]	0	0
Originated, More than Five Years before Current Fiscal Year	[1]	31,051	31,936
Revolving Loans Amortized Cost Basis	[1]	0	0
Revolving Loans Converted to Term	[1]	0	0
Loans held for investment	[1]	31,051	31,936
Real Estate Loans | Residential Home Today | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total		0	0
Real Estate Loans | Residential Home Today | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year	[1]	0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year	[1]	0	0
Year Three, Originated, Two Years before Current Fiscal Year	[1]	0	0
Year Four, Originated, Three Years before Current Fiscal Year	[1]	0	0
Year Five, Originated, Four Years before Current Fiscal Year	[1]	0	0
Originated, More than Five Years before Current Fiscal Year	[1]	3,272	3,535
Revolving Loans Amortized Cost Basis	[1]	0	0
Revolving Loans Converted to Term	[1]	0	0
Loans held for investment	[1]	3,272	3,535
Real Estate Loans | Home Equity Line of Credit
Financing Receivable, Credit Quality Indicator [Line Items]
Total		4,276,940	4,100,665
Year One, Originated, Current Fiscal Year		0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Year Three, Originated, Two Years before Current Fiscal Year		0	0
Year Four, Originated, Three Years before Current Fiscal Year		0	0
Year Five, Originated, Four Years before Current Fiscal Year		0	0
Originated, More than Five Years before Current Fiscal Year		0	0
Revolving Loans Amortized Cost Basis		4,220,391	4,043,334
Revolving Loans Converted to Term		56,549	57,331
Loans held for investment		4,276,940	4,100,665
Real Estate Loans | Home Equity Line of Credit | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Year Three, Originated, Two Years before Current Fiscal Year		0	0
Year Four, Originated, Three Years before Current Fiscal Year		0	0
Year Five, Originated, Four Years before Current Fiscal Year		0	0
Originated, More than Five Years before Current Fiscal Year		0	0
Revolving Loans Amortized Cost Basis		4,204,294	4,028,977
Revolving Loans Converted to Term		51,558	51,726
Loans held for investment		4,255,852	4,080,703
Real Estate Loans | Home Equity Line of Credit | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Year Three, Originated, Two Years before Current Fiscal Year		0	0
Year Four, Originated, Three Years before Current Fiscal Year		0	0
Year Five, Originated, Four Years before Current Fiscal Year		0	0
Originated, More than Five Years before Current Fiscal Year		0	0
Revolving Loans Amortized Cost Basis		5,932	4,679
Revolving Loans Converted to Term		269	370
Loans held for investment		6,201	5,049
Real Estate Loans | Home Equity Line of Credit | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	0
Year Two, Originated, Fiscal Year before Current Fiscal Year		0	0
Year Three, Originated, Two Years before Current Fiscal Year		0	0
Year Four, Originated, Three Years before Current Fiscal Year		0	0
Year Five, Originated, Four Years before Current Fiscal Year		0	0
Originated, More than Five Years before Current Fiscal Year		0	0
Revolving Loans Amortized Cost Basis		10,165	9,678
Revolving Loans Converted to Term		4,722	5,235
Loans held for investment		14,887	14,913
Real Estate Loans | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Total		4,747	7,272
Real Estate Loans | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		1,268	4,998
Year Two, Originated, Fiscal Year before Current Fiscal Year		3,479	2,274
Year Three, Originated, Two Years before Current Fiscal Year		0	0
Year Four, Originated, Three Years before Current Fiscal Year		0	0
Year Five, Originated, Four Years before Current Fiscal Year		0	0
Originated, More than Five Years before Current Fiscal Year		0	0
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		4,747	7,272
Real Estate Loans | Home Equity Loan
Financing Receivable, Credit Quality Indicator [Line Items]
Total		815,684	755,490
Year One, Originated, Current Fiscal Year		118,375	317,985
Year Two, Originated, Fiscal Year before Current Fiscal Year		290,929	237,072
Year Three, Originated, Two Years before Current Fiscal Year		219,407	127,994
Year Four, Originated, Three Years before Current Fiscal Year		119,249	43,963
Year Five, Originated, Four Years before Current Fiscal Year		41,233	13,937
Originated, More than Five Years before Current Fiscal Year		26,491	14,539
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		815,684	755,490
Real Estate Loans | Home Equity Loan | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		118,375	317,633
Year Two, Originated, Fiscal Year before Current Fiscal Year		290,501	236,210
Year Three, Originated, Two Years before Current Fiscal Year		218,667	126,622
Year Four, Originated, Three Years before Current Fiscal Year		117,346	43,623
Year Five, Originated, Four Years before Current Fiscal Year		40,945	13,831
Originated, More than Five Years before Current Fiscal Year		26,205	14,336
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		812,039	752,255
Real Estate Loans | Home Equity Loan | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	197
Year Two, Originated, Fiscal Year before Current Fiscal Year		248	538
Year Three, Originated, Two Years before Current Fiscal Year		423	173
Year Four, Originated, Three Years before Current Fiscal Year		499	113
Year Five, Originated, Four Years before Current Fiscal Year		47	0
Originated, More than Five Years before Current Fiscal Year		9	25
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		1,226	1,046
Real Estate Loans | Home Equity Loan | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year One, Originated, Current Fiscal Year		0	155
Year Two, Originated, Fiscal Year before Current Fiscal Year		180	324
Year Three, Originated, Two Years before Current Fiscal Year		317	1,199
Year Four, Originated, Three Years before Current Fiscal Year		1,404	227
Year Five, Originated, Four Years before Current Fiscal Year		241	106
Originated, More than Five Years before Current Fiscal Year		277	178
Revolving Loans Amortized Cost Basis		0	0
Revolving Loans Converted to Term		0	0
Loans held for investment		$ 2,419	$ 2,189
[1] No new originations of Home Today loans since fiscal year 2016.

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