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, 2022 |
Sep. 30, 2022 |
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Total |
|
$ 14,547,972
|
$ 14,329,962
|
| Total |
|
14,547,972
|
14,329,962
|
| Real Estate Loans |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
509,480
|
3,485,914
|
| Originated fiscal year before current fiscal year |
|
3,404,916
|
2,294,035
|
| Originated two years before current fiscal year |
|
2,238,203
|
1,501,209
|
| Originated three years before current fiscal year |
|
1,463,105
|
638,396
|
| Originated four years before current fiscal year |
|
619,373
|
674,447
|
| Originated five years before current fiscal year |
|
3,766,354
|
3,231,947
|
| Revolving loans, amortized cost basis |
|
2,454,171
|
2,403,989
|
| Revolving loans converted to term |
|
88,889
|
96,762
|
| Total |
|
14,544,491
|
14,326,699
|
| Total |
|
14,544,491
|
14,326,699
|
| Real Estate Loans | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
509,480
|
3,485,914
|
| Originated fiscal year before current fiscal year |
|
3,404,507
|
2,292,357
|
| Originated two years before current fiscal year |
|
2,237,190
|
1,497,967
|
| Originated three years before current fiscal year |
|
1,460,149
|
637,126
|
| Originated four years before current fiscal year |
|
617,977
|
672,081
|
| Originated five years before current fiscal year |
|
3,731,577
|
3,198,562
|
| Revolving loans, amortized cost basis |
|
2,448,906
|
2,400,095
|
| Revolving loans converted to term |
|
82,118
|
89,448
|
| Total |
|
14,491,904
|
14,273,550
|
| Total |
|
14,491,904
|
14,273,550
|
| Real Estate Loans | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
0
|
0
|
| Originated fiscal year before current fiscal year |
|
253
|
483
|
| Originated two years before current fiscal year |
|
377
|
0
|
| Originated three years before current fiscal year |
|
47
|
108
|
| Originated four years before current fiscal year |
|
108
|
464
|
| Originated five years before current fiscal year |
|
1,326
|
816
|
| Revolving loans, amortized cost basis |
|
2,294
|
898
|
| Revolving loans converted to term |
|
321
|
640
|
| Total |
|
4,726
|
3,409
|
| Total |
|
4,726
|
3,409
|
| Real Estate Loans | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
0
|
0
|
| Originated fiscal year before current fiscal year |
|
156
|
1,195
|
| Originated two years before current fiscal year |
|
636
|
3,242
|
| Originated three years before current fiscal year |
|
2,909
|
1,162
|
| Originated four years before current fiscal year |
|
1,288
|
1,902
|
| Originated five years before current fiscal year |
|
33,451
|
32,569
|
| Revolving loans, amortized cost basis |
|
2,971
|
2,996
|
| Revolving loans converted to term |
|
6,450
|
6,674
|
| Total |
|
47,861
|
49,740
|
| Total |
|
47,861
|
49,740
|
| Real Estate Loans | Residential Core |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
463,396
|
3,349,200
|
| Originated fiscal year before current fiscal year |
|
3,275,114
|
2,252,562
|
| Originated two years before current fiscal year |
|
2,205,219
|
1,491,951
|
| Originated three years before current fiscal year |
|
1,454,301
|
630,340
|
| Originated four years before current fiscal year |
|
611,959
|
667,463
|
| Originated five years before current fiscal year |
|
3,698,029
|
3,167,765
|
| Revolving loans, amortized cost basis |
|
0
|
0
|
| Revolving loans converted to term |
|
0
|
0
|
| Total |
|
11,708,018
|
11,559,281
|
| Total |
|
11,708,018
|
11,559,281
|
| Real Estate Loans | Residential Core | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
463,396
|
3,349,200
|
| Originated fiscal year before current fiscal year |
|
3,274,958
|
2,251,075
|
| Originated two years before current fiscal year |
|
2,204,396
|
1,488,763
|
| Originated three years before current fiscal year |
|
1,451,445
|
629,090
|
| Originated four years before current fiscal year |
|
610,582
|
665,116
|
| Originated five years before current fiscal year |
|
3,670,822
|
3,141,907
|
| Revolving loans, amortized cost basis |
|
0
|
0
|
| Revolving loans converted to term |
|
0
|
0
|
| Total |
|
11,675,599
|
11,525,151
|
| Total |
|
11,675,599
|
11,525,151
|
| Real Estate Loans | Residential Core | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
0
|
0
|
| Originated fiscal year before current fiscal year |
|
0
|
292
|
| Originated two years before current fiscal year |
|
260
|
0
|
| Originated three years before current fiscal year |
|
0
|
108
|
| Originated four years before current fiscal year |
|
108
|
464
|
| Originated five years before current fiscal year |
|
1,273
|
816
|
| Revolving loans, amortized cost basis |
|
0
|
0
|
| Revolving loans converted to term |
|
0
|
0
|
| Total |
|
1,641
|
1,680
|
| Total |
|
1,641
|
1,680
|
| Real Estate Loans | Residential Core | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
0
|
0
|
| Originated fiscal year before current fiscal year |
|
156
|
1,195
|
| Originated two years before current fiscal year |
|
563
|
3,188
|
| Originated three years before current fiscal year |
|
2,856
|
1,142
|
| Originated four years before current fiscal year |
|
1,269
|
1,883
|
| Originated five years before current fiscal year |
|
25,934
|
25,042
|
| Revolving loans, amortized cost basis |
|
0
|
0
|
| Revolving loans converted to term |
|
0
|
0
|
| Total |
|
30,778
|
32,450
|
| Total |
|
30,778
|
32,450
|
| Real Estate Loans | Residential Home Today |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
[1] |
0
|
0
|
| Originated fiscal year before current fiscal year |
[1] |
0
|
0
|
| Originated two years before current fiscal year |
[1] |
0
|
0
|
| Originated three years before current fiscal year |
[1] |
0
|
0
|
| Originated four years before current fiscal year |
[1] |
0
|
0
|
| Originated five years before current fiscal year |
[1] |
50,949
|
52,808
|
| Revolving loans, amortized cost basis |
[1] |
0
|
0
|
| Revolving loans converted to term |
[1] |
0
|
0
|
| Total |
[1] |
50,949
|
52,808
|
| Total |
[1] |
50,949
|
52,808
|
| Real Estate Loans | Residential Home Today | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
[1] |
0
|
0
|
| Originated fiscal year before current fiscal year |
[1] |
0
|
0
|
| Originated two years before current fiscal year |
[1] |
0
|
0
|
| Originated three years before current fiscal year |
[1] |
0
|
0
|
| Originated four years before current fiscal year |
[1] |
0
|
0
|
| Originated five years before current fiscal year |
[1] |
43,574
|
45,408
|
| Revolving loans, amortized cost basis |
[1] |
0
|
0
|
| Revolving loans converted to term |
[1] |
0
|
0
|
| Total |
[1] |
43,574
|
45,408
|
| Total |
[1] |
43,574
|
45,408
|
| Real Estate Loans | Residential Home Today | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Total |
|
0
|
0
|
| Total |
|
0
|
0
|
| Real Estate Loans | Residential Home Today | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
[1] |
0
|
0
|
| Originated fiscal year before current fiscal year |
[1] |
0
|
0
|
| Originated two years before current fiscal year |
[1] |
0
|
0
|
| Originated three years before current fiscal year |
[1] |
0
|
0
|
| Originated four years before current fiscal year |
[1] |
0
|
0
|
| Originated five years before current fiscal year |
[1] |
7,375
|
7,400
|
| Revolving loans, amortized cost basis |
[1] |
0
|
0
|
| Revolving loans converted to term |
[1] |
0
|
0
|
| Total |
[1] |
7,375
|
7,400
|
| Total |
[1] |
7,375
|
7,400
|
| Real Estate Loans | Home Equity Loans And Lines Of Credit |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
41,476
|
98,904
|
| Originated fiscal year before current fiscal year |
|
85,351
|
30,805
|
| Originated two years before current fiscal year |
|
28,960
|
9,258
|
| Originated three years before current fiscal year |
|
8,804
|
8,056
|
| Originated four years before current fiscal year |
|
7,414
|
6,984
|
| Originated five years before current fiscal year |
|
17,376
|
11,374
|
| Revolving loans, amortized cost basis |
|
2,454,171
|
2,403,989
|
| Revolving loans converted to term |
|
88,889
|
96,762
|
| Total |
|
2,732,441
|
2,666,132
|
| Total |
|
2,732,441
|
2,666,132
|
| Real Estate Loans | Home Equity Loans And Lines Of Credit | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
41,476
|
98,904
|
| Originated fiscal year before current fiscal year |
|
85,098
|
30,614
|
| Originated two years before current fiscal year |
|
28,770
|
9,204
|
| Originated three years before current fiscal year |
|
8,704
|
8,036
|
| Originated four years before current fiscal year |
|
7,395
|
6,965
|
| Originated five years before current fiscal year |
|
17,181
|
11,247
|
| Revolving loans, amortized cost basis |
|
2,448,906
|
2,400,095
|
| Revolving loans converted to term |
|
82,118
|
89,448
|
| Total |
|
2,719,648
|
2,654,513
|
| Total |
|
2,719,648
|
2,654,513
|
| Real Estate Loans | Home Equity Loans And Lines Of Credit | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
0
|
0
|
| Originated fiscal year before current fiscal year |
|
253
|
191
|
| Originated two years before current fiscal year |
|
117
|
0
|
| Originated three years before current fiscal year |
|
47
|
0
|
| Originated four years before current fiscal year |
|
0
|
0
|
| Originated five years before current fiscal year |
|
53
|
0
|
| Revolving loans, amortized cost basis |
|
2,294
|
898
|
| Revolving loans converted to term |
|
321
|
640
|
| Total |
|
3,085
|
1,729
|
| Total |
|
3,085
|
1,729
|
| Real Estate Loans | Home Equity Loans And Lines Of Credit | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
0
|
0
|
| Originated fiscal year before current fiscal year |
|
0
|
0
|
| Originated two years before current fiscal year |
|
73
|
54
|
| Originated three years before current fiscal year |
|
53
|
20
|
| Originated four years before current fiscal year |
|
19
|
19
|
| Originated five years before current fiscal year |
|
142
|
127
|
| Revolving loans, amortized cost basis |
|
2,971
|
2,996
|
| Revolving loans converted to term |
|
6,450
|
6,674
|
| Total |
|
9,708
|
9,890
|
| Total |
|
9,708
|
9,890
|
| Real Estate Loans | Construction |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
4,608
|
37,810
|
| Originated fiscal year before current fiscal year |
|
44,451
|
10,668
|
| Originated two years before current fiscal year |
|
4,024
|
0
|
| Originated three years before current fiscal year |
|
0
|
0
|
| Originated four years before current fiscal year |
|
0
|
0
|
| Originated five years before current fiscal year |
|
0
|
0
|
| Revolving loans, amortized cost basis |
|
0
|
0
|
| Revolving loans converted to term |
|
0
|
0
|
| Total |
|
53,083
|
48,478
|
| Total |
|
53,083
|
48,478
|
| Real Estate Loans | Construction | Pass |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Originated current fiscal year |
|
4,608
|
37,810
|
| Originated fiscal year before current fiscal year |
|
44,451
|
10,668
|
| Originated two years before current fiscal year |
|
4,024
|
0
|
| Originated three years before current fiscal year |
|
0
|
0
|
| Originated four years before current fiscal year |
|
0
|
0
|
| Originated five years before current fiscal year |
|
0
|
0
|
| Revolving loans, amortized cost basis |
|
0
|
0
|
| Revolving loans converted to term |
|
0
|
0
|
| Total |
|
53,083
|
48,478
|
| Total |
|
53,083
|
48,478
|
| Real Estate Loans | Construction | Special Mention |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Total |
|
0
|
|
| Total |
|
0
|
|
| Real Estate Loans | Construction | Substandard |
|
|
|
| Financing Receivable, Credit Quality Indicator [Line Items] |
|
|
|
| Total |
|
0
|
0
|
| Total |
|
$ 0
|
$ 0
|
|
|