v3.26.1
LOANS AND LEASES - Schedule of Loans Modified, Past Due (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Mar. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases $ 1,116 $ 750
Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 928 696
30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 70 20
60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 17 3
90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 101 31
Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 1,067 725
Commercial | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 889 676
Commercial | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 68 19
Commercial | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 16 2
Commercial | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 94 28
Commercial | Commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 650 324
Commercial | Commercial and industrial | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 549 314
Commercial | Commercial and industrial | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 62 4
Commercial | Commercial and industrial | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 7 1
Commercial | Commercial and industrial | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 32 5
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 83 65
Commercial | Owner occupied commercial mortgage | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 76 61
Commercial | Owner occupied commercial mortgage | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 5 3
Commercial | Owner occupied commercial mortgage | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 1
Commercial | Owner occupied commercial mortgage | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 0
Commercial | Investor dependent    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 75 66
Commercial | Investor dependent | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 67 63
Commercial | Investor dependent | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 3
Commercial | Investor dependent | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 8 0
Commercial | Investor dependent | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 0 0
Commercial | Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 259 270
Commercial | Commercial real estate | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 197 238
Commercial | Commercial real estate | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 1 9
Commercial | Commercial real estate | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 1 0
Commercial | Commercial real estate | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 60 23
Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 49 25
Consumer | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 39 20
Consumer | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 1
Consumer | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 1 1
Consumer | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 7 3
Consumer | Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 42 17
Consumer | Residential mortgage | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 33 12
Consumer | Residential mortgage | 30-59 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 1
Consumer | Residential mortgage | 60-89 Days Past Due    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 1 1
Consumer | Residential mortgage | 90 Days or Greater    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 6 3
Consumer | Revolving mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 3 8
Consumer | Revolving mortgage | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 2 8
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 1 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 4 0
Consumer | Other consumer | Current    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 4 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