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LOANS AND LEASES - Schedule of Amortized Cost of Loans Modified (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 293 | $ 315 | $ 467 | $ 399 | $ 663
Percent of Total Loan Class | 0.21% | 0.24% | 0.34% | 0.30% |
Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 86 | $ 276 | $ 178 | $ 356 |
Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 141 | 35 | 167 | 35 |
Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 34 | 1 | 35 | 2 |
Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 3 | 15 | 3 |
Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 27 |  | 71 | 3 |
Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 5 |  | 1 |  |
Commercial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 135 | $ 237 | $ 248 | $ 313 | 392
Percent of Total Loan Class | 0.20% | 0.38% | 0.36% | 0.50% |
Commercial | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 72 | $ 230 | $ 141 | $ 302 |
Commercial | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 25 | 6 | 25 | 6 |
Commercial | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 34 | 1 | 35 | 2 |
Commercial | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 | 12 | 0 |
Commercial | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 35 | 3 |
Commercial | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 4 |  | 0 |  |
Commercial | Commercial construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | $ 3 | $ 1 | 3
Percent of Total Loan Class |  |  | 0.07% | 0.03% |
Commercial | Commercial construction | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | $ 3 | $ 1 |
Commercial | Commercial construction | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | 0 | 0 |
Commercial | Commercial construction | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | 0 | 0 |
Commercial | Commercial construction | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | 0 | 0 |
Commercial | Commercial construction | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | 0 | 0 |
Commercial | Commercial construction | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  |  | 0 |
Total |  |  | 0 |  |
Commercial | Owner occupied commercial mortgage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 11 | $ 13 | $ 37 | $ 24 | 38
Percent of Total Loan Class | 0.07% | 0.09% | 0.23% | 0.16% |
Commercial | Owner occupied commercial mortgage | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 8 | $ 12 | $ 23 | $ 22 |
Commercial | Owner occupied commercial mortgage | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Commercial | Owner occupied commercial mortgage | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 3 | 1 | 4 | 2 |
Commercial | Owner occupied commercial mortgage | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 | 1 | 0 |
Commercial | Owner occupied commercial mortgage | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 9 | 0 |
Commercial | Owner occupied commercial mortgage | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 0 |  | 0 |  |
Commercial | Non-owner occupied commercial mortgage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 41 | $ 161 | $ 104 | $ 212 | 233
Percent of Total Loan Class | 0.26% | 1.16% | 0.67% | 1.52% |
Commercial | Non-owner occupied commercial mortgage | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 41 | $ 161 | $ 78 | $ 212 |
Commercial | Non-owner occupied commercial mortgage | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Commercial | Non-owner occupied commercial mortgage | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Commercial | Non-owner occupied commercial mortgage | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 | 0 | 0 |
Commercial | Non-owner occupied commercial mortgage | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 26 | 0 |
Commercial | Non-owner occupied commercial mortgage | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 0 |  | 0 |  |
Commercial | Commercial and industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 83 | $ 63 | $ 104 | $ 76 | 118
Percent of Total Loan Class | 0.27% | 0.23% | 0.34% | 0.28% |
Commercial | Commercial and industrial | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 23 | $ 57 | $ 37 | $ 67 |
Commercial | Commercial and industrial | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 25 | 6 | 25 | 6 |
Commercial | Commercial and industrial | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 31 | 0 | 31 | 0 |
Commercial | Commercial and industrial | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 4 | 0 | 11 | 0 |
Commercial | Commercial and industrial | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 | 3 |
Commercial | Commercial and industrial | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 4 |  | 0 |  |
Consumer |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 5 | $ 5 | $ 13 | $ 6 | 24
Percent of Total Loan Class | 0.02% | 0.02% | 0.05% | 0.02% |
Consumer | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 5 | $ 2 | $ 10 | $ 3 |
Consumer | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Consumer | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Consumer | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 3 | 3 | 3 |
Consumer | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 | 0 |
Consumer | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 0 |  | 0 |  |
Consumer | Residential mortgage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 3 | $ 5 | $ 9 | $ 6 | 18
Percent of Total Loan Class | 0.01% | 0.02% | 0.04% | 0.03% |
Consumer | Residential mortgage | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 3 | $ 2 | $ 7 | $ 3 |
Consumer | Residential mortgage | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Consumer | Residential mortgage | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
Consumer | Residential mortgage | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 3 | 2 | 3 |
Consumer | Residential mortgage | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 | 0 |
Consumer | Residential mortgage | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 0 |  | 0 |  |
Consumer | Revolving mortgage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 2 |  | $ 4 |  | 6
Percent of Total Loan Class | 0.11% |  | 0.18% |  |
Consumer | Revolving mortgage | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 2 |  | $ 3 |  |
Consumer | Revolving mortgage | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 |  |
Consumer | Revolving mortgage | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 |  |
Consumer | Revolving mortgage | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | 1 |  |
Consumer | Revolving mortgage | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 |  |
Consumer | Revolving mortgage | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 |  |
SVB |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 153 | $ 73 | $ 206 | $ 80 | 247
Percent of Total Loan Class | 0.36% | 0.16% | 0.49% | 0.18% |
SVB | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 9 | $ 44 | $ 27 | $ 51 |
SVB | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 116 | 29 | 142 | 29 |
SVB | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
SVB | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 | 0 | 0 |
SVB | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 27 |  | 36 | 0 |
SVB | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 1 |  | 1 |  |
SVB | Investor dependent - early stage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 29 | $ 8 | $ 33 | $ 8 | 40
Percent of Total Loan Class | 2.42% | 0.41% | 2.79% | 0.41% |
SVB | Investor dependent - early stage | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 0 | $ 2 | $ 0 | $ 2 |
SVB | Investor dependent - early stage | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 13 | 6 | 17 | 6 |
SVB | Investor dependent - early stage | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
SVB | Investor dependent - early stage | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 | 0 | 0 |
SVB | Investor dependent - early stage | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 15 |  | 15 | 0 |
SVB | Investor dependent - early stage | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 |  | 0 |
Total | 1 |  | 1 |  |
SVB | Investor dependent - early stage | Term Extension, Interest Rate Reduction, and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 1 |  | 1 |  |
SVB | Investor dependent - growth stage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 39 |  | $ 70 |  | 82
Percent of Total Loan Class | 1.49% |  | 2.67% |  |
SVB | Investor dependent - growth stage | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 2 |  | $ 2 |  |
SVB | Investor dependent - growth stage | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 35 |  | 57 |  |
SVB | Investor dependent - growth stage | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 |  |
SVB | Investor dependent - growth stage | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  |  | 0 |  |
SVB | Investor dependent - growth stage | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 2 |  | 11 |  |
SVB | Investor dependent - growth stage | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 |  | 0 |  |
SVB | Innovation C&I and cash flow dependent |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 85 | $ 65 | $ 103 | $ 72 | $ 125
Percent of Total Loan Class | 0.92% | 0.73% | 1.11% | 0.81% |
SVB | Innovation C&I and cash flow dependent | Term Extension |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 7 | $ 42 | $ 25 | $ 49 |
SVB | Innovation C&I and cash flow dependent | Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 68 | 23 | 68 | 23 |
SVB | Innovation C&I and cash flow dependent | Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 0 | 0 | 0 | 0 |
SVB | Innovation C&I and cash flow dependent | Term Extension and Interest Rate Reduction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | 0 | 0 | 0 |
SVB | Innovation C&I and cash flow dependent | Term Extension and Payment Delay |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 10 |  | 10 | 0 |
SVB | Innovation C&I and cash flow dependent | Other Combinations |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total |  | $ 0 |  | $ 0 |
Total | $ 0 |  | $ 0 |  |

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