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Allowance for Loan and Lease Losses (Troubled Debt Restructuring) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
loans
Jun. 30, 2015
USD ($)
loans
Jun. 30, 2016
USD ($)
loans
Jun. 30, 2015
USD ($)
loans
Dec. 31, 2015
USD ($)
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment $ 139,306   $ 139,306   $ 144,843
Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 110 48 221 124  
Financing Receivable, Modifications, Recorded Investment $ 114,985   $ 114,985   114,192
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 10,209 $ 4,177 $ 17,329 $ 15,317  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 56 5 85 12  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 3,113 $ 217 $ 4,773 $ 2,940  
PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 5 9  
Financing Receivable, Modifications, Recorded Investment $ 24,321   $ 24,321   30,651
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 48 $ 60 $ 2,130 $ 623  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 54 $ 0 $ 54 $ 0  
Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 94,551   94,551   104,978
Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 3,895   3,895   3,881
Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 77,855   77,855   84,540
Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 2,840   2,840   1,840
Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 8,158   8,158   12,174
Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,108   1,108   1,360
Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 695   695   1,183
Noncommercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 44,755   44,755   39,865
Noncommercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 411   411   784
Noncommercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 35,810   35,810   32,556
Noncommercial | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 7,062   7,062   5,305
Noncommercial | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,472   1,472   1,220
Accruing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 113,169   113,169   113,296
Accruing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 89,800   89,800   84,065
Accruing | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 23,369   23,369   29,231
Accruing | Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 77,563   77,563   82,394
Accruing | Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 3,444   3,444   3,624
Accruing | Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 62,232   62,232   65,812
Accruing | Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 2,747   2,747   1,751
Accruing | Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 7,466   7,466   8,833
Accruing | Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,064   1,064   1,191
Accruing | Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 610   610   1,183
Accruing | Noncommercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 35,606   35,606   30,902
Accruing | Noncommercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 411   411   784
Accruing | Noncommercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 28,334   28,334   25,427
Accruing | Noncommercial | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 5,593   5,593   3,600
Accruing | Noncommercial | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,268   1,268   1,091
Nonaccruing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 26,137   26,137   31,547
Nonaccruing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 25,185   25,185   30,127
Nonaccruing | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 952   952   1,420
Nonaccruing | Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 16,988   16,988   22,584
Nonaccruing | Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 451   451   257
Nonaccruing | Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 15,623   15,623   18,728
Nonaccruing | Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 93   93   89
Nonaccruing | Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 692   692   3,341
Nonaccruing | Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 44   44   169
Nonaccruing | Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 85   85   0
Nonaccruing | Noncommercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 9,149   9,149   8,963
Nonaccruing | Noncommercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 0   0   0
Nonaccruing | Noncommercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 7,476   7,476   7,129
Nonaccruing | Noncommercial | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,469   1,469   1,705
Nonaccruing | Noncommercial | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment $ 204   $ 204   $ 129
Interest only period provided | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 2 1 3  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 69 $ 249 $ 1,941  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 249 $ 1,872  
Interest only period provided | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 2 1 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 69 $ 249 $ 69  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 249 $ 0  
Interest only period provided | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 1,872  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 1,872  
Loan term extension | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 8 2 13 8  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,327 $ 840 $ 3,316 $ 1,597  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 2 0 2 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 52 $ 0 $ 52 $ 212  
Loan term extension | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 401 $ 212  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 212  
Loan term extension | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 2 4 5  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 808 $ 840 $ 1,096 $ 1,371  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Commercial | Other commercial real estate | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 841 $ 0 $ 841 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 0 $ 0 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Noncommercial | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 5  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Loan term extension | Noncommercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 5 0 7 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 678 $ 0 $ 978 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 52 $ 0 $ 52 $ 0  
Loan term extension | Noncommercial | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 9  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 70 31 142 83  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 5,798 $ 2,968 $ 10,726 $ 10,026  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 35 2 52 5  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 2,417 $ 157 $ 3,706 $ 698  
Below market interest rate | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 5 8  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 48 $ 60 $ 2,130 $ 545  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 54 $ 0 $ 54 $ 0  
Below market interest rate | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 4 3 6 5  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 317 $ 251 $ 414 $ 296  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 2 0 3 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 209 $ 0 $ 227 $ 0  
Below market interest rate | Commercial | Construction and land development | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 55 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 12 6 22 16  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,741 $ 1,510 $ 2,866 $ 5,226  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 0 9 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 577 $ 0 $ 1,078 $ 498  
Below market interest rate | Commercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     3 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 2,027 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Commercial | Other commercial real estate | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 498 $ 0 $ 498 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 12 $ 0 $ 12 $ 0  
Below market interest rate | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 8 4 11 7  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 694 $ 521 $ 704 $ 673  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 1 5 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 197 $ 142 $ 197 $ 142  
Below market interest rate | Commercial | Other | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 85 $ 1,732  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 85 $ 0  
Below market interest rate | Noncommercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 253  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Noncommercial | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 3 3 7  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 16 $ 40 $ 20 $ 85  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Below market interest rate | Noncommercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 42 15 94 42  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,473 $ 646 $ 5,998 $ 1,698  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 20 1 32 3  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 1,337 $ 15 $ 2,107 $ 58  
Below market interest rate | Noncommercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 1 8  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 48 $ 60 $ 48 $ 545  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 54 $ 0 $ 54 $ 0  
Below market interest rate | Noncommercial | Other | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 85 $ 0  
Below market interest rate | Noncommercial | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 0 4 3  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 59 $ 0 $ 141 $ 63  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 32 13 65 30  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,084 $ 300 $ 3,038 $ 1,753  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 19 3 30 5  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 644 $ 60 $ 766 $ 158  
Discharged from bankruptcy | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 78  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Discharged from bankruptcy | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 14 $ 0  
Discharged from bankruptcy | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 0 2 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 283 $ 0 $ 283 $ 622  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 1 2 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 49 $ 17 $ 49 $ 17  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Noncommercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Discharged from bankruptcy | Noncommercial | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 10 3 25 4  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 144 $ 45 $ 290 $ 48  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 7 0 10 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 79 $ 0 $ 95 $ 0  
Discharged from bankruptcy | Noncommercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 5 2 11 8  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 147 $ 35 $ 721 $ 434  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 7 0 7 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 506 $ 0 $ 506 $ 0  
Discharged from bankruptcy | Noncommercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 78  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Discharged from bankruptcy | Noncommercial | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 13 7 25 16  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,461 $ 203 $ 1,695 $ 632  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 3 12 5  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 59 $ 60 $ 151 $ 158