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LOANS AND LEASES - Schedule of Loans and Leases Delinquency Status (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | $ 139,037 | $ 132,333
Nonaccrual Loans | 1,184 | 969
Loans and leases, net of allowance for loan and lease losses | 140,221 | 133,302
Financing receivable, accrued interest reversed to nonaccrual status | 14 | 10
Financing receivable, nonaccrual without allowance for credit loss | 303 | 138
Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 751 | 944
30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 516 | 552
60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 126 | 269
90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 109 | 123
Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 138,286 | 131,389
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 70,987 | 65,534
Nonaccrual Loans | 812 | 698
Loans and leases, net of allowance for loan and lease losses | 71,799 | 66,232
Commercial | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 431 | 700
Commercial | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 245 | 362
Commercial | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 87 | 224
Commercial | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 99 | 114
Commercial | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 70,556 | 64,834
Commercial | Commercial construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 5,100 | 3,916
Nonaccrual Loans | 9 | 2
Loans and leases, net of allowance for loan and lease losses | 5,109 | 3,918
Commercial | Commercial construction | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 23 | 52
Commercial | Commercial construction | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 21 | 43
Commercial | Commercial construction | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1 | 8
Commercial | Commercial construction | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1 | 1
Commercial | Commercial construction | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 5,077 | 3,864
Commercial | Owner occupied commercial mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 16,780 | 15,411
Nonaccrual Loans | 62 | 60
Loans and leases, net of allowance for loan and lease losses | 16,842 | 15,471
Commercial | Owner occupied commercial mortgage | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 41 | 29
Commercial | Owner occupied commercial mortgage | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 30 | 19
Commercial | Owner occupied commercial mortgage | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 9 | 2
Commercial | Owner occupied commercial mortgage | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2 | 8
Commercial | Owner occupied commercial mortgage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 16,739 | 15,382
Commercial | Non-owner occupied commercial mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 15,769 | 14,584
Nonaccrual Loans | 425 | 411
Loans and leases, net of allowance for loan and lease losses | 16,194 | 14,995
Commercial | Non-owner occupied commercial mortgage | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 148 | 296
Commercial | Non-owner occupied commercial mortgage | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 43 | 97
Commercial | Non-owner occupied commercial mortgage | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 27 | 160
Commercial | Non-owner occupied commercial mortgage | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 78 | 39
Commercial | Non-owner occupied commercial mortgage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 15,621 | 14,288
Commercial | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 31,355 | 29,600
Nonaccrual Loans | 285 | 194
Loans and leases, net of allowance for loan and lease losses | 31,640 | 29,794
Commercial | Commercial and industrial | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 173 | 252
Commercial | Commercial and industrial | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 118 | 152
Commercial | Commercial and industrial | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 39 | 41
Commercial | Commercial and industrial | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 16 | 59
Commercial | Commercial and industrial | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 31,182 | 29,348
Commercial | Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1,983 | 2,023
Nonaccrual Loans | 31 | 31
Loans and leases, net of allowance for loan and lease losses | 2,014 | 2,054
Commercial | Leases | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 46 | 71
Commercial | Leases | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 33 | 51
Commercial | Leases | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 11 | 13
Commercial | Leases | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2 | 7
Commercial | Leases | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1,937 | 1,952
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 28,047 | 27,405
Nonaccrual Loans | 181 | 154
Loans and leases, net of allowance for loan and lease losses | 28,228 | 27,559
Consumer | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 256 | 194
Consumer | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 209 | 155
Consumer | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 37 | 32
Consumer | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 10 | 7
Consumer | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 27,791 | 27,211
Consumer | Residential mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 23,004 | 22,649
Nonaccrual Loans | 148 | 127
Loans and leases, net of allowance for loan and lease losses | 23,152 | 22,776
Consumer | Residential mortgage | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 206 | 154
Consumer | Residential mortgage | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 172 | 125
Consumer | Residential mortgage | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 27 | 25
Consumer | Residential mortgage | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 7 | 4
Consumer | Residential mortgage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 22,798 | 22,495
Consumer | Revolving mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2,543 | 2,144
Nonaccrual Loans | 24 | 21
Loans and leases, net of allowance for loan and lease losses | 2,567 | 2,165
Consumer | Revolving mortgage | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 24 | 15
Consumer | Revolving mortgage | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 20 | 13
Consumer | Revolving mortgage | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 4 | 2
Consumer | Revolving mortgage | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
Consumer | Revolving mortgage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2,519 | 2,129
Consumer | Consumer auto |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1,515 | 1,437
Nonaccrual Loans | 8 | 5
Loans and leases, net of allowance for loan and lease losses | 1,523 | 1,442
Consumer | Consumer auto | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 15 | 11
Consumer | Consumer auto | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 12 | 9
Consumer | Consumer auto | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 3 | 2
Consumer | Consumer auto | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
Consumer | Consumer auto | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1,500 | 1,426
Consumer | Consumer other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 985 | 1,175
Nonaccrual Loans | 1 | 1
Loans and leases, net of allowance for loan and lease losses | 986 | 1,176
Consumer | Consumer other | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 11 | 14
Consumer | Consumer other | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 5 | 8
Consumer | Consumer other | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 3 | 3
Consumer | Consumer other | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 3 | 3
Consumer | Consumer other | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 974 | 1,161
SVB |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 40,003 | 39,394
Nonaccrual Loans | 191 | 117
Loans and leases, net of allowance for loan and lease losses | 40,194 | 39,511
SVB | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 64 | 50
SVB | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 62 | 35
SVB | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2 | 13
SVB | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 2
SVB | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 39,939 | 39,344
SVB | Global fund banking |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 27,904 | 25,553
Nonaccrual Loans | 0 | 0
Loans and leases, net of allowance for loan and lease losses | 27,904 | 25,553
SVB | Global fund banking | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
SVB | Global fund banking | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
SVB | Global fund banking | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
SVB | Global fund banking | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
SVB | Global fund banking | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 27,904 | 25,553
SVB | Investor dependent - early stage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 956 | 1,366
Nonaccrual Loans | 41 | 37
Loans and leases, net of allowance for loan and lease losses | 997 | 1,403
SVB | Investor dependent - early stage | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 9 | 19
SVB | Investor dependent - early stage | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 8 | 8
SVB | Investor dependent - early stage | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1 | 9
SVB | Investor dependent - early stage | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 2
SVB | Investor dependent - early stage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 947 | 1,347
SVB | Investor dependent - growth stage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2,150 | 2,860
Nonaccrual Loans | 46 | 37
Loans and leases, net of allowance for loan and lease losses | 2,196 | 2,897
SVB | Investor dependent - growth stage | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2 | 1
SVB | Investor dependent - growth stage | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2 | 0
SVB | Investor dependent - growth stage | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 1
SVB | Investor dependent - growth stage | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
SVB | Investor dependent - growth stage | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 2,148 | 2,859
SVB | Innovation C&I and cash flow dependent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 8,993 | 9,615
Nonaccrual Loans | 104 | 43
Loans and leases, net of allowance for loan and lease losses | 9,097 | 9,658
SVB | Innovation C&I and cash flow dependent | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 53 | 30
SVB | Innovation C&I and cash flow dependent | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 52 | 27
SVB | Innovation C&I and cash flow dependent | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 1 | 3
SVB | Innovation C&I and cash flow dependent | 90 Days or Greater |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | 0 | 0
SVB | Innovation C&I and cash flow dependent | Current |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans and leases | $ 8,940 | $ 9,585

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