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Allowance for Loan and Lease Losses (Troubled Debt Restructuring) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
loans
Sep. 30, 2015
USD ($)
loans
Sep. 30, 2016
USD ($)
loans
Sep. 30, 2015
USD ($)
loans
Dec. 31, 2015
USD ($)
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment $ 149,425   $ 149,425   $ 144,843
Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 105 77 361 282  
Financing Receivable, Modifications, Recorded Investment $ 123,939   $ 123,939   114,192
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 10,584 $ 8,906 $ 32,321 $ 27,484  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 42 10 115 19  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 1,978 $ 2,391 $ 7,738 $ 2,808  
PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 3 4 8 13  
Financing Receivable, Modifications, Recorded Investment $ 25,486   $ 25,486   30,651
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 3,125 $ 328 $ 5,252 $ 949  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 1 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 79 $ 47 $ 79 $ 47  
Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 101,743   101,743   104,978
Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 3,501   3,501   3,881
Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 85,004   85,004   84,540
Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,881   1,881   1,840
Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 9,873   9,873   12,174
Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,041   1,041   1,360
Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 443   443   1,183
Noncommercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 47,682   47,682   39,865
Noncommercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 406   406   784
Noncommercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 38,061   38,061   32,556
Noncommercial | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 7,657   7,657   5,305
Noncommercial | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,558   1,558   1,220
Accruing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 122,368   122,368   113,296
Accruing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 97,200   97,200   84,065
Accruing | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 25,168   25,168   29,231
Accruing | Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 82,756   82,756   82,394
Accruing | Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 3,244   3,244   3,624
Accruing | Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 69,056   69,056   65,812
Accruing | Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,793   1,793   1,751
Accruing | Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 7,384   7,384   8,833
Accruing | Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 917   917   1,191
Accruing | Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 362   362   1,183
Accruing | Noncommercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 39,612   39,612   30,902
Accruing | Noncommercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 406   406   784
Accruing | Noncommercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 31,463   31,463   25,427
Accruing | Noncommercial | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 6,402   6,402   3,600
Accruing | Noncommercial | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,341   1,341   1,091
Nonaccruing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 27,057   27,057   31,547
Nonaccruing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 26,739   26,739   30,127
Nonaccruing | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 318   318   1,420
Nonaccruing | Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 18,987   18,987   22,584
Nonaccruing | Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 257   257   257
Nonaccruing | Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 15,948   15,948   18,728
Nonaccruing | Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 88   88   89
Nonaccruing | Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 2,489   2,489   3,341
Nonaccruing | Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 124   124   169
Nonaccruing | Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 81   81   0
Nonaccruing | Noncommercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 8,070   8,070   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 6,598   6,598   7,129
Nonaccruing | Noncommercial | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,255   1,255   1,705
Nonaccruing | Noncommercial | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment $ 217   $ 217   $ 129
Interest only period provided | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 2 5  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 124 $ 92 $ 369 $ 1,272  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 2 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 124 $ 0 $ 369 $ 0  
Interest only period provided | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 245 $ 68  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 245 $ 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 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 1,112  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Interest only period provided | Noncommercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 1 0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 92 $ 0 $ 92  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Interest only period provided | Noncommercial | Mortgage | 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 $ 124 $ 0 $ 124 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 124 $ 0 $ 124 $ 0  
Loan term extension | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 9 4 23 14  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,924 $ 1,520 $ 5,144 $ 3,097  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 204  
Loan term extension | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     2 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 424 $ 204  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 204  
Loan term extension | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 3 1 7 7  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,321 $ 75 $ 2,407 $ 1,406  
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  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 743 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Loan term extension | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 3 1 4  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 22 $ 1,445 $ 22 $ 1,473  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 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 1 0 1 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 9 $ 0 $ 9 $ 5  
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 | Noncommercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 4 0 11 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 572 $ 0 $ 1,539 $ 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 | 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 71 45 229 172  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 7,914 $ 5,008 $ 22,298 $ 18,029  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 25 5 71 8  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 1,564 $ 1,915 $ 6,372 $ 1,970  
Below market interest rate | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 3 7 11  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 140 $ 223 $ 2,267 $ 766  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 1 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 79 $ 47 $ 79 $ 47  
Below market interest rate | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 7 4 14 14  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 128 $ 193 $ 510 $ 626  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 2 0 4 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 16 $ 0 $ 43 $ 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     $ 53 $ 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 6 8 34 31  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,651 $ 1,248 $ 8,983 $ 7,880  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 11 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 32 $ 0 $ 1,719 $ 1,757  
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     $ 2,026 $ 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 2 2 3 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 178 $ 124 $ 652 $ 124  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 9 $ 0  
Below market interest rate | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 12 3 26 13  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,340 $ 1,797 $ 3,086 $ 2,476  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 1 12 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 569 $ 1,757 $ 2,121 $ 0  
Below market interest rate | Commercial | Lease financing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     2 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 81 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     2 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 81 $ 0  
Below market interest rate | Commercial | Other | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     2 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 125 $ 1,464  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 81 $ 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 3 2 6 13  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 31 $ 17 $ 49 $ 120  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 2 0 3 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 17 $ 0 $ 17 $ 0  
Below market interest rate | Noncommercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 37 25 137 90  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,449 $ 1,592 $ 8,703 $ 4,946  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 13 4 37 7  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 849 $ 158 $ 2,301 $ 213  
Below market interest rate | Noncommercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 3 3 11  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 140 $ 223 $ 188 $ 766  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 1 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 79 $ 47 $ 79 $ 47  
Below market interest rate | Noncommercial | Other | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 44 $ 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 | Noncommercial | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 5 6  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 12 $ 37 $ 109 $ 140  
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 24 27 107 91  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 622 $ 2,286 $ 4,510 $ 5,086  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 16 5 41 9  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 290 $ 476 $ 997 $ 634  
Discharged from bankruptcy | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 1 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,985 $ 105 $ 2,985 $ 183  
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 | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 2 1 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 23 $ 21 $ 23 $ 21  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 23 $ 0 $ 23 $ 0  
Discharged from bankruptcy | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 2 3 3  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 13 $ 965 $ 291 $ 1,562  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 1 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 13 $ 275 $ 13 $ 275  
Discharged from bankruptcy | Commercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 2,985 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Discharged from bankruptcy | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 2 3 3  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 148 $ 135 $ 148  
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 | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 11 6 40 16  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 150 $ 91 $ 467 $ 187  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 2 12 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 74 $ 39 $ 137 $ 39  
Discharged from bankruptcy | Noncommercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 6 18 20  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 29 $ 395 $ 1,030 $ 938  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 6 0 14 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 143 $ 0 $ 647 $ 0  
Discharged from bankruptcy | Noncommercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,985 $ 0 $ 0 $ 78  
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 | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 9 9 42 47  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 407 $ 666 $ 2,564 $ 2,230  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 3 2 13 6  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 37 $ 162 $ 177 $ 320  
Discharged from bankruptcy | Noncommercial | Revolving mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 1 0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 105 $ 0 $ 105  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0