v3.20.4
Loans and the Allowance for Credit Losses (Financing Receivables Credit Quality Indicators) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year $ 23,532    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 13,322    
Financing Receivable, Originated Two Years before Latest Fiscal Year 9,190    
Financing Receivable, Originated Three Years before Latest Fiscal Year 5,618    
Financing Receivable, Originated Four Years before Latest Fiscal Year 3,912    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 8,685    
Financing Receivable, Revolving 20,657    
Financing Receivable, Revolving Converted to Amortizing 76    
Financing Receivable, Unallocated (274)    
Loans, net of unearned income 85,266 $ 82,963 $ 83,152
Commercial And Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 12,476    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 6,474    
Financing Receivable, Originated Two Years before Latest Fiscal Year 4,101    
Financing Receivable, Originated Three Years before Latest Fiscal Year 2,572    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1,214    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 2,564    
Financing Receivable, Revolving 13,508    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (39)    
Loans, net of unearned income 42,870 39,971  
Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1,414    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 974    
Financing Receivable, Originated Two Years before Latest Fiscal Year 971    
Financing Receivable, Originated Three Years before Latest Fiscal Year 606    
Financing Receivable, Originated Four Years before Latest Fiscal Year 421    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 874    
Financing Receivable, Revolving 148    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (3)    
Loans, net of unearned income 5,405 5,537  
Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 62    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 78    
Financing Receivable, Originated Two Years before Latest Fiscal Year 40    
Financing Receivable, Originated Three Years before Latest Fiscal Year 30    
Financing Receivable, Originated Four Years before Latest Fiscal Year 30    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 51    
Financing Receivable, Revolving 9    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 300 331  
Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1,737    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 1,478    
Financing Receivable, Originated Two Years before Latest Fiscal Year 1,271    
Financing Receivable, Originated Three Years before Latest Fiscal Year 267    
Financing Receivable, Originated Four Years before Latest Fiscal Year 67    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 179    
Financing Receivable, Revolving 400    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (5)    
Loans, net of unearned income 5,394 4,936  
Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 255    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 638    
Financing Receivable, Originated Two Years before Latest Fiscal Year 297    
Financing Receivable, Originated Three Years before Latest Fiscal Year 1    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 1    
Financing Receivable, Revolving 688    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (11)    
Loans, net of unearned income 1,869 1,621  
Residential First Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 6,383    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 2,094    
Financing Receivable, Originated Two Years before Latest Fiscal Year 1,048    
Financing Receivable, Originated Three Years before Latest Fiscal Year 1,266    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1,534    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 4,098    
Financing Receivable, Revolving 10    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (142)    
Loans, net of unearned income 16,575 14,485  
Home Equity Lines of Credit [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 4,433    
Financing Receivable, Revolving Converted to Amortizing 76    
Financing Receivable, Unallocated (30)    
Loans, net of unearned income 4,539 5,300  
Home Equity Loan [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 498    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 317    
Financing Receivable, Originated Two Years before Latest Fiscal Year 298    
Financing Receivable, Originated Three Years before Latest Fiscal Year 403    
Financing Receivable, Originated Four Years before Latest Fiscal Year 386    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 790    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (21)    
Loans, net of unearned income 2,713 3,084  
Indirect-vehicles [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 30    
Financing Receivable, Originated Two Years before Latest Fiscal Year 445    
Financing Receivable, Originated Three Years before Latest Fiscal Year 214    
Financing Receivable, Originated Four Years before Latest Fiscal Year 154    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 74    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (17)    
Loans, net of unearned income 934 1,812  
Indirect-other consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 346    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 992    
Financing Receivable, Originated Two Years before Latest Fiscal Year 596    
Financing Receivable, Originated Three Years before Latest Fiscal Year 217    
Financing Receivable, Originated Four Years before Latest Fiscal Year 96    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 49    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (135)    
Loans, net of unearned income 2,431 3,249  
Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 1,228    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (15)    
Loans, net of unearned income 1,213 1,387  
Other Consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 361    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 247    
Financing Receivable, Originated Two Years before Latest Fiscal Year 123    
Financing Receivable, Originated Three Years before Latest Fiscal Year 42    
Financing Receivable, Originated Four Years before Latest Fiscal Year 10    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 5    
Financing Receivable, Revolving 233    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (2)    
Loans, net of unearned income 1,023 1,250  
Pass [Member] | Commercial And Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 12,260    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 6,115    
Financing Receivable, Originated Two Years before Latest Fiscal Year 3,550    
Financing Receivable, Originated Three Years before Latest Fiscal Year 2,413    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1,166    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 2,493    
Financing Receivable, Revolving 12,138    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (39)    
Loans, net of unearned income 40,096    
Pass [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1,379    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 882    
Financing Receivable, Originated Two Years before Latest Fiscal Year 913    
Financing Receivable, Originated Three Years before Latest Fiscal Year 547    
Financing Receivable, Originated Four Years before Latest Fiscal Year 401    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 801    
Financing Receivable, Revolving 140    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (3)    
Loans, net of unearned income 5,060    
Pass [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 61    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 75    
Financing Receivable, Originated Two Years before Latest Fiscal Year 39    
Financing Receivable, Originated Three Years before Latest Fiscal Year 24    
Financing Receivable, Originated Four Years before Latest Fiscal Year 24    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 40    
Financing Receivable, Revolving 9    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 272    
Pass [Member] | Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1,663    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 1,243    
Financing Receivable, Originated Two Years before Latest Fiscal Year 1,137    
Financing Receivable, Originated Three Years before Latest Fiscal Year 252    
Financing Receivable, Originated Four Years before Latest Fiscal Year 65    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 162    
Financing Receivable, Revolving 332    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (5)    
Loans, net of unearned income 4,849    
Pass [Member] | Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 224    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 601    
Financing Receivable, Originated Two Years before Latest Fiscal Year 266    
Financing Receivable, Originated Three Years before Latest Fiscal Year 1    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 1    
Financing Receivable, Revolving 679    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (11)    
Loans, net of unearned income 1,761    
Special Mention [Member] | Commercial And Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 133    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 250    
Financing Receivable, Originated Two Years before Latest Fiscal Year 376    
Financing Receivable, Originated Three Years before Latest Fiscal Year 84    
Financing Receivable, Originated Four Years before Latest Fiscal Year 5    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 48    
Financing Receivable, Revolving 722    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 1,618    
Special Mention [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 18    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 31    
Financing Receivable, Originated Two Years before Latest Fiscal Year 23    
Financing Receivable, Originated Three Years before Latest Fiscal Year 22    
Financing Receivable, Originated Four Years before Latest Fiscal Year 10    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 44    
Financing Receivable, Revolving 6    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 154    
Special Mention [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 2    
Financing Receivable, Originated Four Years before Latest Fiscal Year 2    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 5    
Special Mention [Member] | Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 5    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 77    
Financing Receivable, Originated Two Years before Latest Fiscal Year 76    
Financing Receivable, Originated Three Years before Latest Fiscal Year 15    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 7    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 180    
Special Mention [Member] | Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 30    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 36    
Financing Receivable, Originated Two Years before Latest Fiscal Year 31    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 9    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 106    
Substandard [Member] | Commercial And Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 41    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 50    
Financing Receivable, Originated Two Years before Latest Fiscal Year 78    
Financing Receivable, Originated Three Years before Latest Fiscal Year 55    
Financing Receivable, Originated Four Years before Latest Fiscal Year 20    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 4    
Financing Receivable, Revolving 490    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 738    
Substandard [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 3    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 38    
Financing Receivable, Originated Two Years before Latest Fiscal Year 16    
Financing Receivable, Originated Three Years before Latest Fiscal Year 16    
Financing Receivable, Originated Four Years before Latest Fiscal Year 4    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 15    
Financing Receivable, Revolving 2    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 94    
Substandard [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 3    
Financing Receivable, Originated Two Years before Latest Fiscal Year 1    
Financing Receivable, Originated Three Years before Latest Fiscal Year 3    
Financing Receivable, Originated Four Years before Latest Fiscal Year 4    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 3    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 14    
Substandard [Member] | Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 69    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 114    
Financing Receivable, Originated Two Years before Latest Fiscal Year 57    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 2    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 9    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 251    
Substandard [Member] | Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 1    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 2    
Non-Accrual [Member] | Commercial And Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 42    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 59    
Financing Receivable, Originated Two Years before Latest Fiscal Year 97    
Financing Receivable, Originated Three Years before Latest Fiscal Year 20    
Financing Receivable, Originated Four Years before Latest Fiscal Year 23    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 19    
Financing Receivable, Revolving 158    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 418    
Non-Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 14    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 23    
Financing Receivable, Originated Two Years before Latest Fiscal Year 19    
Financing Receivable, Originated Three Years before Latest Fiscal Year 21    
Financing Receivable, Originated Four Years before Latest Fiscal Year 6    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 14    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 97    
Non-Accrual [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 1    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 8    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 9    
Non-Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 44    
Financing Receivable, Originated Two Years before Latest Fiscal Year 1    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 1    
Financing Receivable, Revolving 68    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 114    
Non-Accrual [Member] | Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 0    
Commercial Portfolio Segment [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 13,952    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 7,526    
Financing Receivable, Originated Two Years before Latest Fiscal Year 5,112    
Financing Receivable, Originated Three Years before Latest Fiscal Year 3,208    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1,665    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 3,489    
Financing Receivable, Revolving 13,665    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (42)    
Loans, net of unearned income 48,575 45,839 45,215
Total Investor Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1,992    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 2,116    
Financing Receivable, Originated Two Years before Latest Fiscal Year 1,568    
Financing Receivable, Originated Three Years before Latest Fiscal Year 268    
Financing Receivable, Originated Four Years before Latest Fiscal Year 67    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 180    
Financing Receivable, Revolving 1,088    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (16)    
Loans, net of unearned income 7,263 6,557 6,436
Consumer Portfolio Segment [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 7,588    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 3,680    
Financing Receivable, Originated Two Years before Latest Fiscal Year 2,510    
Financing Receivable, Originated Three Years before Latest Fiscal Year 2,142    
Financing Receivable, Originated Four Years before Latest Fiscal Year 2,180    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 5,016    
Financing Receivable, Revolving 5,904    
Financing Receivable, Revolving Converted to Amortizing 76    
Financing Receivable, Unallocated (332)    
Loans, net of unearned income 29,428 $ 30,567 $ 31,501
FICO Scores, Above 720 [Member] | Residential First Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 5,564    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 1,738    
Financing Receivable, Originated Two Years before Latest Fiscal Year 809    
Financing Receivable, Originated Three Years before Latest Fiscal Year 1,023    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1,279    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 2,709    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 13,122    
FICO Scores, Above 720 [Member] | Home Equity Lines of Credit [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 3,334    
Financing Receivable, Revolving Converted to Amortizing 45    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 3,379    
FICO Scores, Above 720 [Member] | Home Equity Loan [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 417    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 251    
Financing Receivable, Originated Two Years before Latest Fiscal Year 233    
Financing Receivable, Originated Three Years before Latest Fiscal Year 325    
Financing Receivable, Originated Four Years before Latest Fiscal Year 304    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 580    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 2,110    
FICO Scores, Above 720 [Member] | Indirect-vehicles [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 18    
Financing Receivable, Originated Two Years before Latest Fiscal Year 305    
Financing Receivable, Originated Three Years before Latest Fiscal Year 137    
Financing Receivable, Originated Four Years before Latest Fiscal Year 92    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 40    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 592    
FICO Scores, Above 720 [Member] | Indirect-other consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 297    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 721    
Financing Receivable, Originated Two Years before Latest Fiscal Year 392    
Financing Receivable, Originated Three Years before Latest Fiscal Year 138    
Financing Receivable, Originated Four Years before Latest Fiscal Year 60    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 31    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 1,639    
FICO Scores, Above 720 [Member] | Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 667    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 667    
FICO Scores, Above 720 [Member] | Other Consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 209    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 163    
Financing Receivable, Originated Two Years before Latest Fiscal Year 84    
Financing Receivable, Originated Three Years before Latest Fiscal Year 30    
Financing Receivable, Originated Four Years before Latest Fiscal Year 7    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 3    
Financing Receivable, Revolving 117    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 613    
FICO Scores, 681-720 [Member] | Residential First Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 525    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 189    
Financing Receivable, Originated Two Years before Latest Fiscal Year 103    
Financing Receivable, Originated Three Years before Latest Fiscal Year 112    
Financing Receivable, Originated Four Years before Latest Fiscal Year 113    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 360    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 1,402    
FICO Scores, 681-720 [Member] | Home Equity Lines of Credit [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 492    
Financing Receivable, Revolving Converted to Amortizing 10    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 502    
FICO Scores, 681-720 [Member] | Home Equity Loan [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 57    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 40    
Financing Receivable, Originated Two Years before Latest Fiscal Year 35    
Financing Receivable, Originated Three Years before Latest Fiscal Year 39    
Financing Receivable, Originated Four Years before Latest Fiscal Year 37    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 76    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 284    
FICO Scores, 681-720 [Member] | Indirect-vehicles [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 5    
Financing Receivable, Originated Two Years before Latest Fiscal Year 50    
Financing Receivable, Originated Three Years before Latest Fiscal Year 22    
Financing Receivable, Originated Four Years before Latest Fiscal Year 16    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 8    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 101    
FICO Scores, 681-720 [Member] | Indirect-other consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 39    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 173    
Financing Receivable, Originated Two Years before Latest Fiscal Year 116    
Financing Receivable, Originated Three Years before Latest Fiscal Year 41    
Financing Receivable, Originated Four Years before Latest Fiscal Year 18    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 9    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 396    
FICO Scores, 681-720 [Member] | Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 255    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 255    
FICO Scores, 681-720 [Member] | Other Consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 61    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 44    
Financing Receivable, Originated Two Years before Latest Fiscal Year 20    
Financing Receivable, Originated Three Years before Latest Fiscal Year 5    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 1    
Financing Receivable, Revolving 52    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 184    
FICO Scores, 620-680 [Member] | Residential First Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 211    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 100    
Financing Receivable, Originated Two Years before Latest Fiscal Year 73    
Financing Receivable, Originated Three Years before Latest Fiscal Year 64    
Financing Receivable, Originated Four Years before Latest Fiscal Year 67    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 404    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 919    
FICO Scores, 620-680 [Member] | Home Equity Lines of Credit [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 319    
Financing Receivable, Revolving Converted to Amortizing 11    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 330    
FICO Scores, 620-680 [Member] | Home Equity Loan [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 21    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 17    
Financing Receivable, Originated Two Years before Latest Fiscal Year 19    
Financing Receivable, Originated Three Years before Latest Fiscal Year 22    
Financing Receivable, Originated Four Years before Latest Fiscal Year 25    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 65    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 169    
FICO Scores, 620-680 [Member] | Indirect-vehicles [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 4    
Financing Receivable, Originated Two Years before Latest Fiscal Year 44    
Financing Receivable, Originated Three Years before Latest Fiscal Year 23    
Financing Receivable, Originated Four Years before Latest Fiscal Year 18    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 8    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 97    
FICO Scores, 620-680 [Member] | Indirect-other consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 9    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 73    
Financing Receivable, Originated Two Years before Latest Fiscal Year 63    
Financing Receivable, Originated Three Years before Latest Fiscal Year 27    
Financing Receivable, Originated Four Years before Latest Fiscal Year 12    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 6    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 190    
FICO Scores, 620-680 [Member] | Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 208    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 208    
FICO Scores, 620-680 [Member] | Other Consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 34    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 28    
Financing Receivable, Originated Two Years before Latest Fiscal Year 13    
Financing Receivable, Originated Three Years before Latest Fiscal Year 4    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 1    
Financing Receivable, Revolving 42    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 123    
FICO Scores, Below 620 [Member] | Residential First Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 31    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 44    
Financing Receivable, Originated Two Years before Latest Fiscal Year 50    
Financing Receivable, Originated Three Years before Latest Fiscal Year 51    
Financing Receivable, Originated Four Years before Latest Fiscal Year 60    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 499    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 735    
FICO Scores, Below 620 [Member] | Home Equity Lines of Credit [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 181    
Financing Receivable, Revolving Converted to Amortizing 7    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 188    
FICO Scores, Below 620 [Member] | Home Equity Loan [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 2    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 7    
Financing Receivable, Originated Two Years before Latest Fiscal Year 9    
Financing Receivable, Originated Three Years before Latest Fiscal Year 13    
Financing Receivable, Originated Four Years before Latest Fiscal Year 15    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 52    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 98    
FICO Scores, Below 620 [Member] | Indirect-vehicles [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 3    
Financing Receivable, Originated Two Years before Latest Fiscal Year 42    
Financing Receivable, Originated Three Years before Latest Fiscal Year 26    
Financing Receivable, Originated Four Years before Latest Fiscal Year 24    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 14    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 109    
FICO Scores, Below 620 [Member] | Indirect-other consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 22    
Financing Receivable, Originated Two Years before Latest Fiscal Year 22    
Financing Receivable, Originated Three Years before Latest Fiscal Year 9    
Financing Receivable, Originated Four Years before Latest Fiscal Year 5    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 2    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 61    
FICO Scores, Below 620 [Member] | Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 91    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 91    
FICO Scores, Below 620 [Member] | Other Consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 11    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 11    
Financing Receivable, Originated Two Years before Latest Fiscal Year 6    
Financing Receivable, Originated Three Years before Latest Fiscal Year 3    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 19    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated 0    
Loans, net of unearned income 51    
FICO Scores, Data not available [Member] [Member] | Residential First Mortgage [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 52    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 23    
Financing Receivable, Originated Two Years before Latest Fiscal Year 13    
Financing Receivable, Originated Three Years before Latest Fiscal Year 16    
Financing Receivable, Originated Four Years before Latest Fiscal Year 15    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 126    
Financing Receivable, Revolving 10    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (142)    
Loans, net of unearned income 397    
FICO Scores, Data not available [Member] [Member] | Home Equity Lines of Credit [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 107    
Financing Receivable, Revolving Converted to Amortizing 3    
Financing Receivable, Unallocated (30)    
Loans, net of unearned income 140    
FICO Scores, Data not available [Member] [Member] | Home Equity Loan [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 1    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 2    
Financing Receivable, Originated Two Years before Latest Fiscal Year 2    
Financing Receivable, Originated Three Years before Latest Fiscal Year 4    
Financing Receivable, Originated Four Years before Latest Fiscal Year 5    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 17    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (21)    
Loans, net of unearned income 52    
FICO Scores, Data not available [Member] [Member] | Indirect-vehicles [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 4    
Financing Receivable, Originated Three Years before Latest Fiscal Year 6    
Financing Receivable, Originated Four Years before Latest Fiscal Year 4    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 4    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (17)    
Loans, net of unearned income 35    
FICO Scores, Data not available [Member] [Member] | Indirect-other consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 3    
Financing Receivable, Originated Two Years before Latest Fiscal Year 3    
Financing Receivable, Originated Three Years before Latest Fiscal Year 2    
Financing Receivable, Originated Four Years before Latest Fiscal Year 1    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 1    
Financing Receivable, Revolving 0    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (135)    
Loans, net of unearned income 145    
FICO Scores, Data not available [Member] [Member] | Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 0    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 0    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 7    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (15)    
Loans, net of unearned income 8    
FICO Scores, Data not available [Member] [Member] | Other Consumer [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Financing Receivable, Originated in Current Fiscal Year 46    
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 1    
Financing Receivable, Originated Two Years before Latest Fiscal Year 0    
Financing Receivable, Originated Three Years before Latest Fiscal Year 0    
Financing Receivable, Originated Four Years before Latest Fiscal Year 0    
Financing Receivable, Originated Five or More Years before Latest Fiscal Year 0    
Financing Receivable, Revolving 3    
Financing Receivable, Revolving Converted to Amortizing 0    
Financing Receivable, Unallocated (2)    
Loans, net of unearned income $ 52