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Loans and Leases - Schedule of Loan Modifications (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 599
Weighted Average Interest Rate Reduction   0.45%
Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 477
Weighted Average Term Extension (Months) 14 months  
Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   55
Weighted Average Payment Delay (Months) 6 months  
Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 2
Weighted Average Interest Rate Reduction   3.83%
Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 49
Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 18 months  
Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   2.93%
Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 7
Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 8 months  
Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 6 months  
Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 3
Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 6 months  
Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   5.25%
Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 6
Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 12 months  
Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   1.00%
Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 6 months  
Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 419
Weighted Average Interest Rate Reduction   0.70%
Commercial | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 363
Weighted Average Term Extension (Months) 14 months  
Commercial | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   9
Weighted Average Payment Delay (Months) 7 months  
Commercial | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 2
Weighted Average Interest Rate Reduction   3.62%
Commercial | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 45
Commercial | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 13 months  
Commercial | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   2.90%
Commercial | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 28 months  
Commercial | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 16 months  
Commercial | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Commercial construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 4
Weighted Average Interest Rate Reduction   0.11%
Commercial | Commercial construction | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 4
Weighted Average Term Extension (Months) 9 months  
Commercial | Commercial construction | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Commercial | Commercial construction | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial construction | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial construction | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Commercial construction | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial construction | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial construction | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Commercial construction | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Commercial construction | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial construction | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Commercial construction | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial construction | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial construction | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Commercial construction | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial construction | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Owner occupied commercial mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 19
Weighted Average Interest Rate Reduction   0.12%
Commercial | Owner occupied commercial mortgage | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 17
Weighted Average Term Extension (Months) 17 months  
Commercial | Owner occupied commercial mortgage | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Commercial | Owner occupied commercial mortgage | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 2
Weighted Average Interest Rate Reduction   3.62%
Commercial | Owner occupied commercial mortgage | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Owner occupied commercial mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 36 months  
Commercial | Owner occupied commercial mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   2.00%
Commercial | Owner occupied commercial mortgage | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Owner occupied commercial mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Owner occupied commercial mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Owner occupied commercial mortgage | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Owner occupied commercial mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Owner occupied commercial mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Owner occupied commercial mortgage | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Owner occupied commercial mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Owner occupied commercial mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Owner occupied commercial mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Non-owner occupied commercial mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 280
Weighted Average Interest Rate Reduction   2.43%
Commercial | Non-owner occupied commercial mortgage | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 240
Weighted Average Term Extension (Months) 12 months  
Commercial | Non-owner occupied commercial mortgage | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Commercial | Non-owner occupied commercial mortgage | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
Commercial | Non-owner occupied commercial mortgage | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 40
Commercial | Non-owner occupied commercial mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 12 months  
Commercial | Non-owner occupied commercial mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   3.00%
Commercial | Non-owner occupied commercial mortgage | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Non-owner occupied commercial mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Non-owner occupied commercial mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Non-owner occupied commercial mortgage | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Non-owner occupied commercial mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Non-owner occupied commercial mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Non-owner occupied commercial mortgage | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Non-owner occupied commercial mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Non-owner occupied commercial mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Non-owner occupied commercial mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 116
Weighted Average Interest Rate Reduction   0.43%
Commercial | Commercial and industrial | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 102
Weighted Average Term Extension (Months) 20 months  
Commercial | Commercial and industrial | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   9
Weighted Average Payment Delay (Months) 7 months  
Commercial | Commercial and industrial | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial and industrial | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 5
Commercial | Commercial and industrial | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 26 months  
Commercial | Commercial and industrial | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   2.04%
Commercial | Commercial and industrial | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial and industrial | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 28 months  
Commercial | Commercial and industrial | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 16 months  
Commercial | Commercial and industrial | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial and industrial | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Commercial and industrial | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial and industrial | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Commercial and industrial | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Commercial and industrial | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Commercial and industrial | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Leases    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
Commercial | Leases | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Term Extension (Months) 16 months  
Commercial | Leases | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Commercial | Leases | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
Commercial | Leases | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Leases | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Leases | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Leases | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Leases | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Leases | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Leases | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Leases | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Commercial | Leases | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Leases | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Commercial | Leases | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Commercial | Leases | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Commercial | Leases | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 16
Weighted Average Interest Rate Reduction   0.09%
Consumer | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 9
Weighted Average Term Extension (Months) 84 months  
Consumer | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Consumer | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   4.44%
Consumer | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 4
Consumer | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 61 months  
Consumer | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   3.20%
Consumer | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 3
Consumer | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 6 months  
Consumer | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   5.25%
Consumer | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 13
Weighted Average Interest Rate Reduction   0.10%
Consumer | Residential mortgage | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 7
Weighted Average Term Extension (Months) 90 months  
Consumer | Residential mortgage | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Consumer | Residential mortgage | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   1.63%
Consumer | Residential mortgage | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 3
Consumer | Residential mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 62 months  
Consumer | Residential mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   3.31%
Consumer | Residential mortgage | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Residential mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Residential mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Residential mortgage | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 3
Consumer | Residential mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 6 months  
Consumer | Residential mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   5.25%
Consumer | Residential mortgage | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Residential mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Residential mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Residential mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Revolving mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 3
Weighted Average Interest Rate Reduction   0.13%
Consumer | Revolving mortgage | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 2
Weighted Average Term Extension (Months) 60 months  
Consumer | Revolving mortgage | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Consumer | Revolving mortgage | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   1.74%
Consumer | Revolving mortgage | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 1
Consumer | Revolving mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 57 months  
Consumer | Revolving mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   2.92%
Consumer | Revolving mortgage | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Revolving mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Revolving mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Revolving mortgage | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Revolving mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Revolving mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Revolving mortgage | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Revolving mortgage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Revolving mortgage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Revolving mortgage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Consumer auto    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.01%
Consumer | Consumer auto | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Term Extension (Months) 24 months  
Consumer | Consumer auto | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Consumer | Consumer auto | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
Consumer | Consumer auto | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer auto | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 31 months  
Consumer | Consumer auto | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.69%
Consumer | Consumer auto | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer auto | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Consumer auto | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Consumer auto | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer auto | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Consumer auto | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Consumer auto | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer auto | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Consumer auto | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Consumer auto | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Consumer other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.03%
Consumer | Consumer other | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Term Extension (Months) 55 months  
Consumer | Consumer other | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
Consumer | Consumer other | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   9.65%
Consumer | Consumer other | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer other | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 36 months  
Consumer | Consumer other | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.25%
Consumer | Consumer other | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer other | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Consumer other | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Consumer other | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer other | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
Consumer | Consumer other | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Consumer other | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Consumer | Consumer other | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
Consumer | Consumer other | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
Consumer | Consumer other | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 164
Weighted Average Interest Rate Reduction   0.30%
SVB | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 105
Weighted Average Term Extension (Months) 6 months  
SVB | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   46
Weighted Average Payment Delay (Months) 5 months  
SVB | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 7
SVB | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 7 months  
SVB | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 6 months  
SVB | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 6
SVB | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 12 months  
SVB | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   1.00%
SVB | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 6 months  
SVB | Investor dependent - early stage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 26
Weighted Average Interest Rate Reduction   1.88%
SVB | Investor dependent - early stage | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 3
Weighted Average Term Extension (Months) 4 months  
SVB | Investor dependent - early stage | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   17
Weighted Average Payment Delay (Months) 5 months  
SVB | Investor dependent - early stage | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - early stage | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - early stage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Investor dependent - early stage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - early stage | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - early stage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 6 months  
SVB | Investor dependent - early stage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 6 months  
SVB | Investor dependent - early stage | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - early stage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Investor dependent - early stage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - early stage | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 6
SVB | Investor dependent - early stage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 12 months  
SVB | Investor dependent - early stage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   1.00%
SVB | Investor dependent - early stage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 6 months  
SVB | Investor dependent - growth stage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 36
Weighted Average Interest Rate Reduction   1.24%
SVB | Investor dependent - growth stage | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 8
Weighted Average Term Extension (Months) 9 months  
SVB | Investor dependent - growth stage | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   28
Weighted Average Payment Delay (Months) 5 months  
SVB | Investor dependent - growth stage | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - growth stage | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - growth stage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Investor dependent - growth stage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - growth stage | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - growth stage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Investor dependent - growth stage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Investor dependent - growth stage | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - growth stage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Investor dependent - growth stage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - growth stage | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Investor dependent - growth stage | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Investor dependent - growth stage | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Investor dependent - growth stage | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Innovation C&I and cash flow dependent    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 79
Weighted Average Interest Rate Reduction   0.81%
SVB | Innovation C&I and cash flow dependent | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 72
Weighted Average Term Extension (Months) 4 months  
SVB | Innovation C&I and cash flow dependent | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
SVB | Innovation C&I and cash flow dependent | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | Innovation C&I and cash flow dependent | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Innovation C&I and cash flow dependent | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Innovation C&I and cash flow dependent | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Innovation C&I and cash flow dependent | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 7
SVB | Innovation C&I and cash flow dependent | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 7 months  
SVB | Innovation C&I and cash flow dependent | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 5 months  
SVB | Innovation C&I and cash flow dependent | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Innovation C&I and cash flow dependent | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Innovation C&I and cash flow dependent | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Innovation C&I and cash flow dependent | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Innovation C&I and cash flow dependent | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Innovation C&I and cash flow dependent | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Innovation C&I and cash flow dependent | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Private Bank    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 4
Weighted Average Interest Rate Reduction   0.04%
SVB | Private Bank | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 4
Weighted Average Term Extension (Months) 11 months  
SVB | Private Bank | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
SVB | Private Bank | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | Private Bank | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Private Bank | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Private Bank | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Private Bank | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Private Bank | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Private Bank | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Private Bank | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Private Bank | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Private Bank | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Private Bank | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Private Bank | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Private Bank | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Private Bank | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | CRE    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 14
Weighted Average Interest Rate Reduction   0.53%
SVB | CRE | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 14
Weighted Average Term Extension (Months) 9 months  
SVB | CRE | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   0
Weighted Average Payment Delay (Months) 0 months  
SVB | CRE | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | CRE | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | CRE | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | CRE | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | CRE | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | CRE | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | CRE | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | CRE | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | CRE | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | CRE | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | CRE | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | CRE | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | CRE | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | CRE | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 5
Weighted Average Interest Rate Reduction   0.16%
SVB | Other | Term Extension    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 4
Weighted Average Term Extension (Months) 6 months  
SVB | Other | Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   1
Weighted Average Payment Delay (Months) 6 months  
SVB | Other | Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
Weighted Average Interest Rate Reduction   0.00%
SVB | Other | Term Extension and Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Other | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Other | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Other | Term Extension and Other Than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Other | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 17 months  
SVB | Other | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 17 months  
SVB | Other | Other than Insignificant Payment Delay And Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Other | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Payment Delay (Months) 0 months  
SVB | Other | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Other | Term Extension, Interest Rate Reduction, and Other than Insignificant Payment Delay    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Amortized Cost   $ 0
SVB | Other | Weighted Average Term Extension (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months  
SVB | Other | Weighted Average Interest Rate Reduction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Interest Rate Reduction   0.00%
SVB | Other | Weighted Average Payment Delay (Months)    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Weighted Average Term Extension (Months) 0 months