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Loans and Leases - Schedule of Loans Disaggregated by Year of Origination and by Risk Rating (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases $ 133,202 $ 70,781 $ 69,790
Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 132,036 69,917  
30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 369 480  
60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 231 214  
90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 566 170  
Commercial      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 11,737 15,142  
Term loans by origination year, year two 12,647 10,760  
Term loans by origination year, year three 9,624 8,245  
Term loans by origination year, year four 6,997 5,860  
Term loans by origination year, year five 4,800 3,101  
Term loans by origination year, more than five years before current fiscal year 5,757 4,449  
Revolving 6,482 5,868  
Revolving Converted to Term Loans 6 30  
Total loans and leases 58,050 53,455  
Commercial | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 57,252 52,770  
Commercial | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 197 387  
Commercial | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 129 192  
Commercial | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 472 106  
Commercial | Commercial construction      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 695 1,146  
Term loans by origination year, year two 1,364 759  
Term loans by origination year, year three 702 529  
Term loans by origination year, year four 355 221  
Term loans by origination year, year five 125 27  
Term loans by origination year, more than five years before current fiscal year 63 80  
Revolving 78 42  
Revolving Converted to Term Loans 0 0  
Total loans and leases 3,382 2,804  
Commercial | Commercial construction | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 3,342 2,753  
Commercial | Commercial construction | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 17 50  
Commercial | Commercial construction | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 11 0  
Commercial | Commercial construction | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 12 1  
Commercial | Commercial construction | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 694 1,140  
Term loans by origination year, year two 1,305 759  
Term loans by origination year, year three 688 511  
Term loans by origination year, year four 264 157  
Term loans by origination year, year five 95 27  
Term loans by origination year, more than five years before current fiscal year 58 75  
Revolving 78 42  
Revolving Converted to Term Loans 0 0  
Total loans and leases 3,182 2,711  
Commercial | Commercial construction | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 4  
Term loans by origination year, year two 58 0  
Term loans by origination year, year three 0 18  
Term loans by origination year, year four 60 18  
Term loans by origination year, year five 30 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 148 40  
Commercial | Commercial construction | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1 2  
Term loans by origination year, year two 1 0  
Term loans by origination year, year three 14 0  
Term loans by origination year, year four 31 43  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 5 5  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 52 50  
Commercial | Commercial construction | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 3  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 0 3  
Commercial | Commercial construction | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 0 0  
Commercial | Owner occupied commercial mortgage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,736 2,830  
Term loans by origination year, year two 2,867 3,389  
Term loans by origination year, year three 3,321 3,039  
Term loans by origination year, year four 2,873 1,886  
Term loans by origination year, year five 1,712 1,113  
Term loans by origination year, more than five years before current fiscal year 2,544 2,031  
Revolving 177 185  
Revolving Converted to Term Loans 0 0  
Total loans and leases 15,230 14,473  
Commercial | Owner occupied commercial mortgage | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 15,153 14,414  
Commercial | Owner occupied commercial mortgage | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 29 29  
Commercial | Owner occupied commercial mortgage | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 4 5  
Commercial | Owner occupied commercial mortgage | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 44 25  
Commercial | Owner occupied commercial mortgage | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,701 2,773  
Term loans by origination year, year two 2,775 3,328  
Term loans by origination year, year three 3,179 2,966  
Term loans by origination year, year four 2,770 1,825  
Term loans by origination year, year five 1,625 1,048  
Term loans by origination year, more than five years before current fiscal year 2,275 1,867  
Revolving 165 177  
Revolving Converted to Term Loans 0 0  
Total loans and leases 14,490 13,984  
Commercial | Owner occupied commercial mortgage | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 29 33  
Term loans by origination year, year two 55 14  
Term loans by origination year, year three 52 32  
Term loans by origination year, year four 30 33  
Term loans by origination year, year five 45 18  
Term loans by origination year, more than five years before current fiscal year 102 49  
Revolving 7 2  
Revolving Converted to Term Loans 0 0  
Total loans and leases 320 181  
Commercial | Owner occupied commercial mortgage | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 6 24  
Term loans by origination year, year two 37 47  
Term loans by origination year, year three 90 41  
Term loans by origination year, year four 73 28  
Term loans by origination year, year five 42 47  
Term loans by origination year, more than five years before current fiscal year 167 114  
Revolving 5 6  
Revolving Converted to Term Loans 0 0  
Total loans and leases 420 307  
Commercial | Owner occupied commercial mortgage | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 1  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 0 1  
Commercial | Owner occupied commercial mortgage | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 0 0  
Commercial | Non-owner occupied commercial mortgage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,749 2,504  
Term loans by origination year, year two 2,589 1,670  
Term loans by origination year, year three 1,714 1,931  
Term loans by origination year, year four 1,661 1,776  
Term loans by origination year, year five 1,528 773  
Term loans by origination year, more than five years before current fiscal year 1,646 1,199  
Revolving 54 49  
Revolving Converted to Term Loans 0 0  
Total loans and leases 10,941 9,902  
Commercial | Non-owner occupied commercial mortgage | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 10,566 9,671  
Commercial | Non-owner occupied commercial mortgage | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 1 76  
Commercial | Non-owner occupied commercial mortgage | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 45 144  
Commercial | Non-owner occupied commercial mortgage | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 329 11  
Commercial | Non-owner occupied commercial mortgage | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,740 2,501  
Term loans by origination year, year two 2,567 1,658  
Term loans by origination year, year three 1,668 1,794  
Term loans by origination year, year four 1,418 1,397  
Term loans by origination year, year five 1,003 680  
Term loans by origination year, more than five years before current fiscal year 1,254 933  
Revolving 54 48  
Revolving Converted to Term Loans 0 0  
Total loans and leases 9,704 9,011  
Commercial | Non-owner occupied commercial mortgage | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 8 0  
Term loans by origination year, year two 0 1  
Term loans by origination year, year three 31 69  
Term loans by origination year, year four 161 38  
Term loans by origination year, year five 129 35  
Term loans by origination year, more than five years before current fiscal year 65 10  
Revolving 0 1  
Revolving Converted to Term Loans 0 0  
Total loans and leases 394 154  
Commercial | Non-owner occupied commercial mortgage | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1 3  
Term loans by origination year, year two 22 11  
Term loans by origination year, year three 15 68  
Term loans by origination year, year four 82 324  
Term loans by origination year, year five 363 58  
Term loans by origination year, more than five years before current fiscal year 308 236  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 791 700  
Commercial | Non-owner occupied commercial mortgage | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 17  
Term loans by origination year, year five 33 0  
Term loans by origination year, more than five years before current fiscal year 19 20  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 52 37  
Commercial | Non-owner occupied commercial mortgage | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 0 0  
Commercial | Commercial and industrial      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 6,921 7,889  
Term loans by origination year, year two 5,221 4,419  
Term loans by origination year, year three 3,505 2,311  
Term loans by origination year, year four 1,830 1,739  
Term loans by origination year, year five 1,304 1,096  
Term loans by origination year, more than five years before current fiscal year 1,429 1,029  
Revolving 6,173 5,592  
Revolving Converted to Term Loans 6 30  
Total loans and leases 26,389 24,105  
Commercial | Commercial and industrial | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 26,154 23,853  
Commercial | Commercial and industrial | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 107 173  
Commercial | Commercial and industrial | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 53 26  
Commercial | Commercial and industrial | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 75 53  
Commercial | Commercial and industrial | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 6,742 7,695  
Term loans by origination year, year two 4,882 4,145  
Term loans by origination year, year three 3,266 2,035  
Term loans by origination year, year four 1,536 1,533  
Term loans by origination year, year five 1,116 872  
Term loans by origination year, more than five years before current fiscal year 1,142 845  
Revolving 5,607 5,252  
Revolving Converted to Term Loans 4 29  
Total loans and leases 24,295 22,406  
Commercial | Commercial and industrial | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 113 87  
Term loans by origination year, year two 148 153  
Term loans by origination year, year three 137 79  
Term loans by origination year, year four 96 63  
Term loans by origination year, year five 38 52  
Term loans by origination year, more than five years before current fiscal year 22 23  
Revolving 200 40  
Revolving Converted to Term Loans 0 0  
Total loans and leases 754 497  
Commercial | Commercial and industrial | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 65 106  
Term loans by origination year, year two 181 117  
Term loans by origination year, year three 96 194  
Term loans by origination year, year four 197 132  
Term loans by origination year, year five 122 166  
Term loans by origination year, more than five years before current fiscal year 243 145  
Revolving 223 200  
Revolving Converted to Term Loans 2 1  
Total loans and leases 1,129 1,061  
Commercial | Commercial and industrial | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1 1  
Term loans by origination year, year two 10 4  
Term loans by origination year, year three 6 3  
Term loans by origination year, year four 1 11  
Term loans by origination year, year five 28 6  
Term loans by origination year, more than five years before current fiscal year 22 16  
Revolving 20 7  
Revolving Converted to Term Loans 0 0  
Total loans and leases 88 48  
Commercial | Commercial and industrial | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 123 93  
Revolving Converted to Term Loans 0 0  
Total loans and leases 123 93  
Commercial | Leases      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 636 773  
Term loans by origination year, year two 606 523  
Term loans by origination year, year three 382 435  
Term loans by origination year, year four 278 238  
Term loans by origination year, year five 131 92  
Term loans by origination year, more than five years before current fiscal year 75 110  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 2,108 2,171  
Commercial | Leases | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 2,037 2,079  
Commercial | Leases | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 43 59  
Commercial | Leases | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 16 17  
Commercial | Leases | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 12 16  
Commercial | Leases | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 601 718  
Term loans by origination year, year two 547 466  
Term loans by origination year, year three 333 389  
Term loans by origination year, year four 249 216  
Term loans by origination year, year five 116 80  
Term loans by origination year, more than five years before current fiscal year 64 108  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 1,910 1,977  
Commercial | Leases | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 13 21  
Term loans by origination year, year two 22 22  
Term loans by origination year, year three 22 17  
Term loans by origination year, year four 7 9  
Term loans by origination year, year five 6 4  
Term loans by origination year, more than five years before current fiscal year 2 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 72 73  
Commercial | Leases | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 21 32  
Term loans by origination year, year two 34 32  
Term loans by origination year, year three 24 27  
Term loans by origination year, year four 21 12  
Term loans by origination year, year five 8 7  
Term loans by origination year, more than five years before current fiscal year 9 1  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 117 111  
Commercial | Leases | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1 2  
Term loans by origination year, year two 3 3  
Term loans by origination year, year three 3 2  
Term loans by origination year, year four 1 1  
Term loans by origination year, year five 1 1  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 9 9  
Commercial | Leases | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 1  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 0 1  
SVB      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 5,300    
Term loans by origination year, year two 8,713    
Term loans by origination year, year three 4,926    
Term loans by origination year, year four 2,486    
Term loans by origination year, year five 1,466    
Term loans by origination year, more than five years before current fiscal year 2,579    
Revolving 31,246    
Revolving Converted to Term Loans 148    
Total loans and leases 56,864 0  
SVB | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 56,711    
SVB | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 52    
SVB | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 73    
SVB | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 28    
SVB | Global fund banking      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 316    
Term loans by origination year, year two 228    
Term loans by origination year, year three 51    
Term loans by origination year, year four 43    
Term loans by origination year, year five 26    
Term loans by origination year, more than five years before current fiscal year 3    
Revolving 26,792    
Revolving Converted to Term Loans 57    
Total loans and leases 27,516 0  
SVB | Global fund banking | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 27,516    
SVB | Global fund banking | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 0    
SVB | Global fund banking | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 0    
SVB | Global fund banking | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 0    
SVB | Global fund banking | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 316    
Term loans by origination year, year two 226    
Term loans by origination year, year three 42    
Term loans by origination year, year four 42    
Term loans by origination year, year five 26    
Term loans by origination year, more than five years before current fiscal year 3    
Revolving 26,786    
Revolving Converted to Term Loans 57    
Total loans and leases 27,498    
SVB | Global fund banking | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 5    
Revolving Converted to Term Loans 0    
Total loans and leases 5    
SVB | Global fund banking | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 2    
Term loans by origination year, year three 9    
Term loans by origination year, year four 1    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 1    
Revolving Converted to Term Loans 0    
Total loans and leases 13    
SVB | Global fund banking | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Global fund banking | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Investor dependent - early stage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 474    
Term loans by origination year, year two 832    
Term loans by origination year, year three 214    
Term loans by origination year, year four 13    
Term loans by origination year, year five 3    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 180    
Revolving Converted to Term Loans 2    
Total loans and leases 1,718 0  
SVB | Investor dependent - early stage | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 1,700    
SVB | Investor dependent - early stage | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 4    
SVB | Investor dependent - early stage | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 7    
SVB | Investor dependent - early stage | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 7    
SVB | Investor dependent - early stage | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 457    
Term loans by origination year, year two 703    
Term loans by origination year, year three 136    
Term loans by origination year, year four 8    
Term loans by origination year, year five 3    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 134    
Revolving Converted to Term Loans 2    
Total loans and leases 1,443    
SVB | Investor dependent - early stage | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 1    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 1    
SVB | Investor dependent - early stage | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 16    
Term loans by origination year, year two 119    
Term loans by origination year, year three 65    
Term loans by origination year, year four 5    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 44    
Revolving Converted to Term Loans 0    
Total loans and leases 249    
SVB | Investor dependent - early stage | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1    
Term loans by origination year, year two 9    
Term loans by origination year, year three 13    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 2    
Revolving Converted to Term Loans 0    
Total loans and leases 25    
SVB | Investor dependent - early stage | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Investor dependent - growth stage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,205    
Term loans by origination year, year two 1,699    
Term loans by origination year, year three 604    
Term loans by origination year, year four 166    
Term loans by origination year, year five 12    
Term loans by origination year, more than five years before current fiscal year 5    
Revolving 253    
Revolving Converted to Term Loans 4    
Total loans and leases 3,948 0  
SVB | Investor dependent - growth stage | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 3,925    
SVB | Investor dependent - growth stage | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 5    
SVB | Investor dependent - growth stage | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 17    
SVB | Investor dependent - growth stage | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 1    
SVB | Investor dependent - growth stage | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,145    
Term loans by origination year, year two 1,420    
Term loans by origination year, year three 502    
Term loans by origination year, year four 88    
Term loans by origination year, year five 11    
Term loans by origination year, more than five years before current fiscal year 5    
Revolving 211    
Revolving Converted to Term Loans 4    
Total loans and leases 3,386    
SVB | Investor dependent - growth stage | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1    
Term loans by origination year, year two 78    
Term loans by origination year, year three 7    
Term loans by origination year, year four 15    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 101    
SVB | Investor dependent - growth stage | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 52    
Term loans by origination year, year two 189    
Term loans by origination year, year three 77    
Term loans by origination year, year four 63    
Term loans by origination year, year five 1    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 37    
Revolving Converted to Term Loans 0    
Total loans and leases 419    
SVB | Investor dependent - growth stage | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 7    
Term loans by origination year, year two 12    
Term loans by origination year, year three 18    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 5    
Revolving Converted to Term Loans 0    
Total loans and leases 42    
SVB | Investor dependent - growth stage | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Innovation C&I and cash flow dependent      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,812    
Term loans by origination year, year two 2,484    
Term loans by origination year, year three 1,120    
Term loans by origination year, year four 374    
Term loans by origination year, year five 173    
Term loans by origination year, more than five years before current fiscal year 48    
Revolving 2,713    
Revolving Converted to Term Loans 0    
Total loans and leases 8,724 0  
SVB | Innovation C&I and cash flow dependent | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 8,666    
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 19    
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 37    
SVB | Innovation C&I and cash flow dependent | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 2    
SVB | Innovation C&I and cash flow dependent | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,712    
Term loans by origination year, year two 2,305    
Term loans by origination year, year three 860    
Term loans by origination year, year four 275    
Term loans by origination year, year five 147    
Term loans by origination year, more than five years before current fiscal year 33    
Revolving 2,508    
Revolving Converted to Term Loans 0    
Total loans and leases 7,840    
SVB | Innovation C&I and cash flow dependent | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 38    
Term loans by origination year, year two 51    
Term loans by origination year, year three 36    
Term loans by origination year, year four 51    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 40    
Revolving Converted to Term Loans 0    
Total loans and leases 216    
SVB | Innovation C&I and cash flow dependent | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 62    
Term loans by origination year, year two 128    
Term loans by origination year, year three 222    
Term loans by origination year, year four 48    
Term loans by origination year, year five 26    
Term loans by origination year, more than five years before current fiscal year 15    
Revolving 154    
Revolving Converted to Term Loans 0    
Total loans and leases 655    
SVB | Innovation C&I and cash flow dependent | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 2    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 11    
Revolving Converted to Term Loans 0    
Total loans and leases 13    
SVB | Innovation C&I and cash flow dependent | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Private Bank      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 993    
Term loans by origination year, year two 2,330    
Term loans by origination year, year three 2,171    
Term loans by origination year, year four 1,384    
Term loans by origination year, year five 762    
Term loans by origination year, more than five years before current fiscal year 1,183    
Revolving 812    
Revolving Converted to Term Loans 13    
Total loans and leases 9,648 0  
SVB | Private Bank | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 9,616    
SVB | Private Bank | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 8    
SVB | Private Bank | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 10    
SVB | Private Bank | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 14    
SVB | Private Bank | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 991    
Term loans by origination year, year two 2,328    
Term loans by origination year, year three 2,169    
Term loans by origination year, year four 1,381    
Term loans by origination year, year five 758    
Term loans by origination year, more than five years before current fiscal year 1,145    
Revolving 804    
Revolving Converted to Term Loans 11    
Total loans and leases 9,587    
SVB | Private Bank | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 2    
Term loans by origination year, year two 2    
Term loans by origination year, year three 2    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 7    
Revolving 6    
Revolving Converted to Term Loans 0    
Total loans and leases 19    
SVB | Private Bank | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 3    
Term loans by origination year, year five 3    
Term loans by origination year, more than five years before current fiscal year 31    
Revolving 2    
Revolving Converted to Term Loans 2    
Total loans and leases 41    
SVB | Private Bank | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 1    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 1    
SVB | Private Bank | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | CRE      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 293    
Term loans by origination year, year two 545    
Term loans by origination year, year three 269    
Term loans by origination year, year four 204    
Term loans by origination year, year five 299    
Term loans by origination year, more than five years before current fiscal year 918    
Revolving 96    
Revolving Converted to Term Loans 5    
Total loans and leases 2,629 0  
SVB | CRE | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 2,619    
SVB | CRE | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 10    
SVB | CRE | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 0    
SVB | CRE | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 0    
SVB | CRE | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 293    
Term loans by origination year, year two 531    
Term loans by origination year, year three 251    
Term loans by origination year, year four 177    
Term loans by origination year, year five 192    
Term loans by origination year, more than five years before current fiscal year 835    
Revolving 94    
Revolving Converted to Term Loans 5    
Total loans and leases 2,378    
SVB | CRE | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 8    
Term loans by origination year, year three 0    
Term loans by origination year, year four 1    
Term loans by origination year, year five 6    
Term loans by origination year, more than five years before current fiscal year 21    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 36    
SVB | CRE | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 6    
Term loans by origination year, year three 18    
Term loans by origination year, year four 26    
Term loans by origination year, year five 73    
Term loans by origination year, more than five years before current fiscal year 51    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 174    
SVB | CRE | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 28    
Term loans by origination year, more than five years before current fiscal year 11    
Revolving 2    
Revolving Converted to Term Loans 0    
Total loans and leases 41    
SVB | CRE | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Other      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 207    
Term loans by origination year, year two 595    
Term loans by origination year, year three 497    
Term loans by origination year, year four 302    
Term loans by origination year, year five 191    
Term loans by origination year, more than five years before current fiscal year 422    
Revolving 400    
Revolving Converted to Term Loans 67    
Total loans and leases 2,681 0  
SVB | Other | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 2,669    
SVB | Other | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 6    
SVB | Other | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 2    
SVB | Other | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 4    
SVB | Other | Pass      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 207    
Term loans by origination year, year two 546    
Term loans by origination year, year three 477    
Term loans by origination year, year four 281    
Term loans by origination year, year five 182    
Term loans by origination year, more than five years before current fiscal year 381    
Revolving 374    
Revolving Converted to Term Loans 67    
Total loans and leases 2,515    
SVB | Other | Special Mention      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 7    
Term loans by origination year, year three 4    
Term loans by origination year, year four 13    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 10    
Revolving 1    
Revolving Converted to Term Loans 0    
Total loans and leases 35    
SVB | Other | Substandard      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 42    
Term loans by origination year, year three 16    
Term loans by origination year, year four 8    
Term loans by origination year, year five 9    
Term loans by origination year, more than five years before current fiscal year 31    
Revolving 25    
Revolving Converted to Term Loans 0    
Total loans and leases 131    
SVB | Other | Doubtful      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
SVB | Other | Ungraded      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0    
Term loans by origination year, year two 0    
Term loans by origination year, year three 0    
Term loans by origination year, year four 0    
Term loans by origination year, year five 0    
Term loans by origination year, more than five years before current fiscal year 0    
Revolving 0    
Revolving Converted to Term Loans 0    
Total loans and leases 0    
Consumer      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 2,182 4,249  
Term loans by origination year, year two 4,137 4,214  
Term loans by origination year, year three 3,920 2,337  
Term loans by origination year, year four 2,114 930  
Term loans by origination year, year five 797 481  
Term loans by origination year, more than five years before current fiscal year 2,865 2,775  
Revolving 2,184 2,240  
Revolving Converted to Term Loans 89 100  
Total loans and leases 18,288 17,326  
Consumer | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 18,073 17,147  
Consumer | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 120 93  
Consumer | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 29 22  
Consumer | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Total loans and leases 66 64  
Consumer | Residential mortgage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,679 3,489  
Term loans by origination year, year two 3,548 3,730  
Term loans by origination year, year three 3,567 2,106  
Term loans by origination year, year four 1,954 812  
Term loans by origination year, year five 723 419  
Term loans by origination year, more than five years before current fiscal year 2,808 2,731  
Revolving 8 22  
Revolving Converted to Term Loans 0 0  
Total loans and leases 14,287 13,309  
Consumer | Residential mortgage | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1,676 3,485  
Term loans by origination year, year two 3,538 3,721  
Term loans by origination year, year three 3,551 2,097  
Term loans by origination year, year four 1,942 805  
Term loans by origination year, year five 716 413  
Term loans by origination year, more than five years before current fiscal year 2,687 2,625  
Revolving 8 22  
Revolving Converted to Term Loans 0 0  
Total loans and leases 14,118 13,168  
Consumer | Residential mortgage | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 2 3  
Term loans by origination year, year two 5 7  
Term loans by origination year, year three 8 6  
Term loans by origination year, year four 8 5  
Term loans by origination year, year five 5 3  
Term loans by origination year, more than five years before current fiscal year 67 49  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 95 73  
Consumer | Residential mortgage | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 1  
Term loans by origination year, year two 3 1  
Term loans by origination year, year three 4 2  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 1 1  
Term loans by origination year, more than five years before current fiscal year 14 11  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 22 16  
Consumer | Residential mortgage | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1 0  
Term loans by origination year, year two 2 1  
Term loans by origination year, year three 4 1  
Term loans by origination year, year four 4 2  
Term loans by origination year, year five 1 2  
Term loans by origination year, more than five years before current fiscal year 40 46  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 52 52  
Consumer | Revolving mortgage      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 1,820 1,851  
Revolving Converted to Term Loans 89 100  
Total loans and leases 1,909 1,951  
Consumer | Revolving mortgage | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 1,805 1,839  
Revolving Converted to Term Loans 79 92  
Total loans and leases 1,884 1,931  
Consumer | Revolving mortgage | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 9 5  
Revolving Converted to Term Loans 4 4  
Total loans and leases 13 9  
Consumer | Revolving mortgage | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 1 2  
Revolving Converted to Term Loans 2 1  
Total loans and leases 3 3  
Consumer | Revolving mortgage | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 5 5  
Revolving Converted to Term Loans 4 3  
Total loans and leases 9 8  
Consumer | Consumer auto      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 386 600  
Term loans by origination year, year two 474 402  
Term loans by origination year, year three 294 218  
Term loans by origination year, year four 151 112  
Term loans by origination year, year five 69 60  
Term loans by origination year, more than five years before current fiscal year 37 22  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 1,411 1,414  
Consumer | Consumer auto | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 385 599  
Term loans by origination year, year two 470 398  
Term loans by origination year, year three 290 216  
Term loans by origination year, year four 149 111  
Term loans by origination year, year five 68 59  
Term loans by origination year, more than five years before current fiscal year 37 22  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 1,399 1,405  
Consumer | Consumer auto | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 1 1  
Term loans by origination year, year two 2 2  
Term loans by origination year, year three 2 2  
Term loans by origination year, year four 2 1  
Term loans by origination year, year five 1 1  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 8 7  
Consumer | Consumer auto | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 1 1  
Term loans by origination year, year three 1 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 2 1  
Consumer | Consumer auto | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 1 1  
Term loans by origination year, year three 1 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 0 0  
Revolving 0 0  
Revolving Converted to Term Loans 0 0  
Total loans and leases 2 1  
Consumer | Consumer other      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 117 160  
Term loans by origination year, year two 115 82  
Term loans by origination year, year three 59 13  
Term loans by origination year, year four 9 6  
Term loans by origination year, year five 5 2  
Term loans by origination year, more than five years before current fiscal year 20 22  
Revolving 356 367  
Revolving Converted to Term Loans 0 0  
Total loans and leases 681 652  
Consumer | Consumer other | Current      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 117 160  
Term loans by origination year, year two 115 82  
Term loans by origination year, year three 59 13  
Term loans by origination year, year four 9 6  
Term loans by origination year, year five 5 2  
Term loans by origination year, more than five years before current fiscal year 17 19  
Revolving 350 361  
Revolving Converted to Term Loans 0 0  
Total loans and leases 672 643  
Consumer | Consumer other | 30-59 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 1 1  
Revolving 3 3  
Revolving Converted to Term Loans 0 0  
Total loans and leases 4 4  
Consumer | Consumer other | 60-89 Days Past Due      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 1 1  
Revolving 1 1  
Revolving Converted to Term Loans 0 0  
Total loans and leases 2 2  
Consumer | Consumer other | 90 Days or Greater      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Term loans by origination year, year one 0 0  
Term loans by origination year, year two 0 0  
Term loans by origination year, year three 0 0  
Term loans by origination year, year four 0 0  
Term loans by origination year, year five 0 0  
Term loans by origination year, more than five years before current fiscal year 1 1  
Revolving 2 2  
Revolving Converted to Term Loans 0 0  
Total loans and leases $ 3 $ 3