BANK LOANS, NET, Credit Quality of Held for Investment Loan Portfolio (Details) - USD ($)
$ in Millions |
9 Months Ended |
12 Months Ended |
Jun. 30, 2026 |
Sep. 30, 2025 |
| SBL |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
$ 17
|
$ 21
|
| Fiscal year before current fiscal year |
11
|
62
|
| Fiscal year two years before current fiscal year |
43
|
30
|
| Fiscal year three years before current fiscal year |
31
|
20
|
| Fiscal year four years before current fiscal year |
24
|
29
|
| Prior |
70
|
43
|
| Revolving loans |
24,571
|
19,570
|
| Total loans held for investment |
24,767
|
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 |
17
|
21
|
| Fiscal year before current fiscal year |
11
|
62
|
| Fiscal year two years before current fiscal year |
43
|
30
|
| Fiscal year three years before current fiscal year |
31
|
20
|
| Fiscal year four years before current fiscal year |
24
|
29
|
| Prior |
70
|
43
|
| Revolving loans |
24,532
|
19,485
|
| Total loans held for investment |
24,728
|
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 |
39
|
85
|
| Total loans held for investment |
39
|
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 |
559
|
746
|
| Fiscal year before current fiscal year |
577
|
744
|
| Fiscal year two years before current fiscal year |
705
|
382
|
| Fiscal year three years before current fiscal year |
300
|
1,017
|
| Fiscal year four years before current fiscal year |
879
|
851
|
| Prior |
3,353
|
3,559
|
| Revolving loans |
3,667
|
3,478
|
| Total loans held for investment |
10,040
|
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 |
1
|
0
|
| Prior |
7
|
32
|
| Revolving loans |
0
|
1
|
| Gross charge-offs |
9
|
33
|
| C&I loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
559
|
746
|
| Fiscal year before current fiscal year |
576
|
743
|
| Fiscal year two years before current fiscal year |
704
|
366
|
| Fiscal year three years before current fiscal year |
288
|
1,016
|
| Fiscal year four years before current fiscal year |
879
|
849
|
| Prior |
3,301
|
3,495
|
| Revolving loans |
3,658
|
3,455
|
| Total loans held for investment |
9,965
|
10,670
|
| C&I loans | Special mention |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
0
|
0
|
| Fiscal year before current fiscal year |
1
|
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 |
0
|
0
|
| Prior |
0
|
0
|
| Revolving loans |
0
|
3
|
| Total loans held for investment |
13
|
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 |
32
|
64
|
| Revolving loans |
8
|
20
|
| Total loans held for investment |
41
|
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 |
20
|
0
|
| Revolving loans |
1
|
0
|
| Total loans held for investment |
21
|
0
|
| CRE loans |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
870
|
1,333
|
| Fiscal year before current fiscal year |
1,486
|
789
|
| Fiscal year two years before current fiscal year |
553
|
1,075
|
| Fiscal year three years before current fiscal year |
877
|
1,874
|
| Fiscal year four years before current fiscal year |
1,400
|
599
|
| Prior |
1,684
|
1,558
|
| Revolving loans |
819
|
612
|
| Total loans held for investment |
7,689
|
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 |
19
|
0
|
| Prior |
3
|
11
|
| Revolving loans |
0
|
1
|
| Gross charge-offs |
22
|
12
|
| CRE loans | Pass |
|
|
| Loans by origination fiscal year |
|
|
| Current fiscal year |
870
|
1,333
|
| Fiscal year before current fiscal year |
1,486
|
789
|
| Fiscal year two years before current fiscal year |
527
|
1,023
|
| Fiscal year three years before current fiscal year |
773
|
1,698
|
| Fiscal year four years before current fiscal year |
1,227
|
599
|
| Prior |
1,534
|
1,473
|
| Revolving loans |
819
|
612
|
| Total loans held for investment |
7,236
|
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 |
54
|
90
|
| Fiscal year four years before current fiscal year |
90
|
0
|
| Prior |
0
|
7
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
148
|
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 |
22
|
27
|
| Fiscal year three years before current fiscal year |
50
|
86
|
| Fiscal year four years before current fiscal year |
83
|
0
|
| Prior |
127
|
55
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
282
|
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 |
231
|
289
|
| Fiscal year before current fiscal year |
304
|
128
|
| Fiscal year two years before current fiscal year |
68
|
177
|
| Fiscal year three years before current fiscal year |
109
|
59
|
| Fiscal year four years before current fiscal year |
58
|
226
|
| Prior |
284
|
241
|
| Revolving loans |
617
|
570
|
| Total loans held for investment |
1,671
|
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 |
231
|
289
|
| Fiscal year before current fiscal year |
304
|
128
|
| Fiscal year two years before current fiscal year |
68
|
158
|
| Fiscal year three years before current fiscal year |
109
|
59
|
| Fiscal year four years before current fiscal year |
58
|
113
|
| Prior |
284
|
241
|
| Revolving loans |
617
|
570
|
| Total loans held for investment |
1,671
|
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 |
1,802
|
1,810
|
| Fiscal year before current fiscal year |
1,677
|
1,206
|
| Fiscal year two years before current fiscal year |
1,073
|
1,465
|
| Fiscal year three years before current fiscal year |
1,318
|
2,518
|
| Fiscal year four years before current fiscal year |
2,373
|
1,390
|
| Prior |
2,940
|
1,864
|
| Revolving loans |
40
|
42
|
| Total loans held for investment |
11,223
|
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 |
1,802
|
1,810
|
| Fiscal year before current fiscal year |
1,677
|
1,206
|
| Fiscal year two years before current fiscal year |
1,072
|
1,465
|
| Fiscal year three years before current fiscal year |
1,316
|
2,511
|
| Fiscal year four years before current fiscal year |
2,365
|
1,389
|
| Prior |
2,925
|
1,849
|
| Revolving loans |
40
|
42
|
| Total loans held for investment |
11,197
|
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 |
4
|
1
|
| Prior |
5
|
3
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
11
|
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 |
4
|
0
|
| Prior |
10
|
12
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
15
|
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 |
185
|
144
|
| Prior |
755
|
699
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
1,101
|
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 |
185
|
144
|
| Prior |
755
|
699
|
| Revolving loans |
0
|
0
|
| Total loans held for investment |
1,101
|
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
|