v3.26.3
LOANS AND LEASES - Schedule of Loans Modified, Past Due (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Sep. 30, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases $ 1,009 $ 989
Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 846 873
30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 19 11
60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 25 5
90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 119 100
Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 985 935
Commercial | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 831 831
Commercial | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 17 8
Commercial | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 20 2
Commercial | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 117 94
Commercial | Commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 469 423
Commercial | Commercial and industrial | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 434 396
Commercial | Commercial and industrial | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 1 2
Commercial | Commercial and industrial | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 15 1
Commercial | Commercial and industrial | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 19 24
Commercial | Capital call lines    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Capital call lines | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Capital call lines | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Capital call lines | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Capital call lines | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Owner occupied commercial mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 79 84
Commercial | Owner occupied commercial mortgage | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 63 74
Commercial | Owner occupied commercial mortgage | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 5 1
Commercial | Owner occupied commercial mortgage | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 5 0
Commercial | Owner occupied commercial mortgage | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 6 9
Commercial | Investor dependent    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 61 91
Commercial | Investor dependent | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 61 90
Commercial | Investor dependent | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Investor dependent | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Investor dependent | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 1
Commercial | Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 376 337
Commercial | Commercial real estate | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 273 271
Commercial | Commercial real estate | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 11 5
Commercial | Commercial real estate | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 1
Commercial | Commercial real estate | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 92 60
Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 24 54
Consumer | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 15 42
Consumer | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 3
Consumer | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 5 3
Consumer | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 6
Consumer | Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 19 47
Consumer | Residential mortgage | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 10 35
Consumer | Residential mortgage | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 3
Consumer | Residential mortgage | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 5 3
Consumer | Residential mortgage | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 6
Consumer | Revolving mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 7
Consumer | Revolving mortgage | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 7
Consumer | Revolving mortgage | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Revolving mortgage | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Revolving mortgage | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Auto | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Auto | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Auto | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Auto | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Other consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 3 0
Consumer | Other consumer | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 3 0
Consumer | Other consumer | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Other consumer | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Consumer | Other consumer | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases $ 0 $ 0