BANK LOANS, NET, Credit Quality of Held for Investment Loan Portfolio (Details) - USD ($)
$ in Millions |
6 Months Ended |
12 Months Ended |
Mar. 31, 2026 |
Sep. 30, 2025 |
| SBL |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
$ 8
|
$ 21
|
| Fiscal year before current fiscal year |
15
|
62
|
| Fiscal year two years before current fiscal year |
57
|
30
|
| Fiscal year three years before current fiscal year |
156
|
20
|
| Fiscal year four years before current fiscal year |
24
|
29
|
| Prior |
72
|
43
|
| Revolving loans |
22,675
|
19,570
|
| Total loans held for investment |
23,007
|
19,775
|
| Gross charge-offs |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Gross charge-offs |
0
|
0
|
| SBL | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
8
|
21
|
| Fiscal year before current fiscal year |
15
|
62
|
| Fiscal year two years before current fiscal year |
57
|
30
|
| Fiscal year three years before current fiscal year |
156
|
20
|
| Fiscal year four years before current fiscal year |
24
|
29
|
| Prior |
72
|
43
|
| Revolving loans |
22,621
|
19,485
|
| Total loans held for investment |
22,953
|
19,690
|
| SBL | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
54
|
85
|
| Total loans held for investment |
54
|
85
|
| SBL | Substandard |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| SBL | Doubtful |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| C&I loans |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
336
|
746
|
| Fiscal year before current fiscal year |
619
|
744
|
| Fiscal year two years before current fiscal year |
839
|
382
|
| Fiscal year three years before current fiscal year |
342
|
1,017
|
| Fiscal year four years before current fiscal year |
957
|
851
|
| Prior |
4,080
|
3,559
|
| Revolving loans |
3,316
|
3,478
|
| Total loans held for investment |
10,489
|
10,777
|
| Gross charge-offs |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
1
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
32
|
| Revolving loans |
0
|
1
|
| Gross charge-offs |
1
|
33
|
| C&I loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
336
|
746
|
| Fiscal year before current fiscal year |
617
|
743
|
| Fiscal year two years before current fiscal year |
838
|
366
|
| Fiscal year three years before current fiscal year |
330
|
1,016
|
| Fiscal year four years before current fiscal year |
956
|
849
|
| Prior |
4,028
|
3,495
|
| Revolving loans |
3,292
|
3,455
|
| Total loans held for investment |
10,397
|
10,670
|
| C&I loans | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
2
|
0
|
| Fiscal year two years before current fiscal year |
0
|
16
|
| Fiscal year three years before current fiscal year |
12
|
1
|
| Fiscal year four years before current fiscal year |
1
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
10
|
3
|
| Total loans held for investment |
25
|
20
|
| C&I loans | Substandard |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
1
|
| Fiscal year two years before current fiscal year |
1
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
2
|
| Prior |
43
|
64
|
| Revolving loans |
13
|
20
|
| Total loans held for investment |
57
|
87
|
| C&I loans | Doubtful |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
9
|
0
|
| Revolving loans |
1
|
0
|
| Total loans held for investment |
10
|
0
|
| CRE loans |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
705
|
1,333
|
| Fiscal year before current fiscal year |
1,480
|
789
|
| Fiscal year two years before current fiscal year |
637
|
1,075
|
| Fiscal year three years before current fiscal year |
889
|
1,874
|
| Fiscal year four years before current fiscal year |
1,578
|
599
|
| Prior |
1,954
|
1,558
|
| Revolving loans |
729
|
612
|
| Total loans held for investment |
7,972
|
7,840
|
| Gross charge-offs |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
12
|
0
|
| Prior |
2
|
11
|
| Revolving loans |
0
|
1
|
| Gross charge-offs |
14
|
12
|
| CRE loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
705
|
1,333
|
| Fiscal year before current fiscal year |
1,480
|
789
|
| Fiscal year two years before current fiscal year |
633
|
1,023
|
| Fiscal year three years before current fiscal year |
812
|
1,698
|
| Fiscal year four years before current fiscal year |
1,390
|
599
|
| Prior |
1,788
|
1,473
|
| Revolving loans |
729
|
612
|
| Total loans held for investment |
7,537
|
7,527
|
| CRE loans | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
4
|
25
|
| Fiscal year three years before current fiscal year |
26
|
90
|
| Fiscal year four years before current fiscal year |
114
|
0
|
| Prior |
0
|
7
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
144
|
122
|
| CRE loans | Substandard |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
27
|
| Fiscal year three years before current fiscal year |
51
|
86
|
| Fiscal year four years before current fiscal year |
74
|
0
|
| Prior |
143
|
55
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
268
|
168
|
| CRE loans | Doubtful |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
23
|
23
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
23
|
23
|
| REIT loans |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
105
|
289
|
| Fiscal year before current fiscal year |
324
|
128
|
| Fiscal year two years before current fiscal year |
68
|
177
|
| Fiscal year three years before current fiscal year |
146
|
59
|
| Fiscal year four years before current fiscal year |
58
|
226
|
| Prior |
297
|
241
|
| Revolving loans |
697
|
570
|
| Total loans held for investment |
1,695
|
1,690
|
| Gross charge-offs |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Gross charge-offs |
0
|
0
|
| REIT loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
105
|
289
|
| Fiscal year before current fiscal year |
324
|
128
|
| Fiscal year two years before current fiscal year |
68
|
158
|
| Fiscal year three years before current fiscal year |
146
|
59
|
| Fiscal year four years before current fiscal year |
58
|
113
|
| Prior |
297
|
241
|
| Revolving loans |
697
|
570
|
| Total loans held for investment |
1,695
|
1,558
|
| REIT loans | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| REIT loans | Substandard |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
19
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
113
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
132
|
| REIT loans | Doubtful |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| Residential mortgage loans |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
1,066
|
1,810
|
| Fiscal year before current fiscal year |
1,729
|
1,206
|
| Fiscal year two years before current fiscal year |
1,114
|
1,465
|
| Fiscal year three years before current fiscal year |
1,369
|
2,518
|
| Fiscal year four years before current fiscal year |
2,427
|
1,390
|
| Prior |
3,046
|
1,864
|
| Revolving loans |
38
|
42
|
| Total loans held for investment |
10,789
|
10,295
|
| Gross charge-offs |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
1
|
| Revolving loans |
0
|
0
|
| Gross charge-offs |
0
|
1
|
| Residential mortgage loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
1,066
|
1,810
|
| Fiscal year before current fiscal year |
1,729
|
1,206
|
| Fiscal year two years before current fiscal year |
1,113
|
1,465
|
| Fiscal year three years before current fiscal year |
1,367
|
2,511
|
| Fiscal year four years before current fiscal year |
2,419
|
1,389
|
| Prior |
3,031
|
1,849
|
| Revolving loans |
38
|
42
|
| Total loans held for investment |
10,763
|
10,272
|
| Residential mortgage loans | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
1
|
0
|
| Fiscal year three years before current fiscal year |
1
|
1
|
| Fiscal year four years before current fiscal year |
3
|
1
|
| Prior |
5
|
3
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
10
|
5
|
| Residential mortgage loans | Substandard |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
1
|
6
|
| Fiscal year four years before current fiscal year |
5
|
0
|
| Prior |
10
|
12
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
16
|
18
|
| Residential mortgage loans | Doubtful |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| Tax-exempt loans |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
55
|
49
|
| Fiscal year before current fiscal year |
49
|
62
|
| Fiscal year two years before current fiscal year |
0
|
57
|
| Fiscal year three years before current fiscal year |
57
|
215
|
| Fiscal year four years before current fiscal year |
194
|
144
|
| Prior |
768
|
699
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
1,123
|
1,226
|
| Gross charge-offs |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Gross charge-offs |
0
|
0
|
| Tax-exempt loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
55
|
49
|
| Fiscal year before current fiscal year |
49
|
62
|
| Fiscal year two years before current fiscal year |
0
|
57
|
| Fiscal year three years before current fiscal year |
57
|
215
|
| Fiscal year four years before current fiscal year |
194
|
144
|
| Prior |
768
|
699
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
1,123
|
1,226
|
| Tax-exempt loans | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| Tax-exempt loans | Substandard |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
0
|
0
|
| Tax-exempt loans | Doubtful |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
0
|
0
|
| Fiscal year two years before current fiscal year |
0
|
0
|
| Fiscal year three years before current fiscal year |
0
|
0
|
| Fiscal year four years before current fiscal year |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
$ 0
|
$ 0
|