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Loans Held for Investment - Schedule of Contractual Aging of Loans by Portfolio (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | $ 0.5 |  | $ 19.1
Nonaccrual loans | 116.5 |  | 56.9
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | 17,377.3 |  | 17,844.9
Financing Receivable, Allowance for Credit Loss, Writeoff | 10.8 | $ 11.0 | 114.7
Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 29.9 |  | 7.7
Nonaccrual loans | 82.9 |  | 55.4
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 259.6 |  | 1,368.4
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,378.9 |  | 1,369.8
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 1,342.9 |  | 1,946.9
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 1,879.7 |  | 1,397.5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 1,398.0 |  | 1,084.8
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 2,772.3 |  | 1,901.0
Financing Receivable, Excluding Accrued Interest, Revolving | 67.0 |  | 75.2
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 97.7 |  | 119.6
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 25.4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 9,196.1 |  | 9,263.2
Commercial real estate | Pass |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 216.2 |  | 1,208.5
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,206.1 |  | 1,340.2
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 1,283.2 |  | 1,909.1
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 1,807.9 |  | 1,344.1
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 1,257.2 |  | 1,069.7
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 2,619.8 |  | 1,778.3
Financing Receivable, Excluding Accrued Interest, Revolving | 66.5 |  | 74.1
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 97.3 |  | 109.8
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 8,554.2 |  | 8,833.8
Commercial real estate | Other Assets Especially Mentioned |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 34.3 |  | 78.4
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 101.6 |  | 17.5
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 29.5 |  | 15.8
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 45.9 |  | 16.1
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 92.6 |  | 4.9
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 97.8 |  | 79.2
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.6
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.2 |  | 9.8
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 401.9 |  | 222.3
Commercial real estate | Substandard |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 7.2 |  | 81.5
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 71.2 |  | 12.1
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 30.2 |  | 22.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 25.9 |  | 37.3
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 48.2 |  | 10.2
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 54.7 |  | 43.5
Financing Receivable, Excluding Accrued Interest, Revolving | 0.5 |  | 0.5
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.2 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 238.1 |  | 207.1
Commercial real estate | Doubtful |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 1.9 |  |
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 1.9 |  |
Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 3.6 |  | 3.7
Nonaccrual loans | 4.0 |  | 3.3
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 76.3 |  | 443.7
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 400.8 |  | 233.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 144.1 |  | 326.6
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 253.1 |  | 76.5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 36.8 |  | 17.3
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 32.2 |  | 20.9
Financing Receivable, Excluding Accrued Interest, Revolving | 117.6 |  | 124.8
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 36.4 |  | 1.8
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 13.2
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 1,097.3 |  | 1,244.6
Total construction loans | Pass |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 66.5 |  | 438.0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 395.4 |  | 233.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 144.1 |  | 320.2
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 236.3 |  | 76.5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 35.0 |  | 17.3
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 32.2 |  | 20.9
Financing Receivable, Excluding Accrued Interest, Revolving | 117.4 |  | 124.8
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 36.4 |  | 1.8
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 1,063.3 |  | 1,232.5
Total construction loans | Other Assets Especially Mentioned |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 2.1
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  | 6.4
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 16.8 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 17.8 |  | 8.5
Total construction loans | Substandard |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 9.8 |  |
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3.1 |  |
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 1.8 |  |
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Revolving | 0.2 |  |
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 14.9 |  |
Total construction loans | Doubtful |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 3.6
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1.3 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 1.3 |  | 3.6
Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 11.8 |  | 9.7
Nonaccrual loans | 16.6 |  | 15.4
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 5.3 |  | 23.9
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 30.3 |  | 75.3
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 77.7 |  | 414.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 418.0 |  | 489.4
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 482.1 |  | 441.3
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 669.8 |  | 257.4
Financing Receivable, Excluding Accrued Interest, Revolving | 473.1 |  | 477.8
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 5.1 |  | 12.5
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.3 |  | 1.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 2,161.4 |  | 2,191.6
Residential | Performing Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 4.9 |  | 22.6
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 29.4 |  | 73.8
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 76.2 |  | 409.1
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 412.4 |  | 487.3
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 479.8 |  | 440.2
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 663.2 |  | 252.5
Financing Receivable, Excluding Accrued Interest, Revolving | 473.1 |  | 477.8
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 5.1 |  | 12.5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 2,144.1 |  | 2,175.8
Residential | Nonperforming Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.4 |  | 1.3
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.9 |  | 1.5
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 1.5 |  | 4.9
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 5.6 |  | 2.1
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 2.3 |  | 1.1
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 6.6 |  | 4.9
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 17.3 |  | 15.8
Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 17.2 |  | 10.4
Nonaccrual loans | 20.5 |  | 5.3
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 27.1 |  | 132.6
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 122.5 |  | 61.4
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 57.5 |  | 131.2
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 128.8 |  | 117.4
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 114.0 |  | 78.9
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 195.9 |  | 145.7
Financing Receivable, Excluding Accrued Interest, Revolving | 30.5 |  | 33.4
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 1.8 |  | 0.5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 678.1 |  | 701.1
Agricultural | Pass |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 27.1 |  | 118.6
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 106.0 |  | 53.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 49.2 |  | 104.7
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 100.2 |  | 107.9
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 103.6 |  | 66.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 175.5 |  | 144.1
Financing Receivable, Excluding Accrued Interest, Revolving | 30.5 |  | 33.4
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 1.8 |  | 0.5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 593.9 |  | 628.2
Agricultural | Other Assets Especially Mentioned |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 1.1
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 9.1 |  | 0.2
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.2 |  | 6.8
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 7.4 |  | 6.1
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 5.9 |  | 8.5
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 11.7 |  | 0.7
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 34.3 |  | 23.4
Agricultural | Substandard |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 12.9
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7.4 |  | 8.2
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 8.1 |  | 19.7
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 21.2 |  | 3.4
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 4.5 |  | 4.4
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 8.7 |  | 0.9
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 49.9 |  | 49.5
Agricultural | Doubtful |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 0.0 |  |
Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 62.5 |  | 31.5
Nonaccrual loans | 124.0 |  | 79.4
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.3 | 3.2 | 39.6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 13,132.9 |  | 13,400.5
Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 8.9 |  | 11.7
Nonaccrual loans | 4.5 |  | 3.9
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 31.0 |  | 267.7
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 243.6 |  | 128.3
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 113.2 |  | 168.6
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 150.5 |  | 69.5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 61.5 |  | 44.8
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 80.4 |  | 46.1
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Allowance for Credit Loss, Writeoff | 2.7 |  | 8.5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 680.2 |  | 725.0
Indirect consumer | Performing Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 31.0 |  | 266.8
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 242.8 |  | 127.2
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 112.0 |  | 167.5
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 149.3 |  | 68.9
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 60.9 |  | 44.4
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 79.6 |  | 45.6
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 675.6 |  | 720.4
Indirect consumer | Nonperforming Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 0.9
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.8 |  | 1.1
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 1.2 |  | 1.1
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 1.2 |  | 0.6
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.6 |  | 0.4
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.8 |  | 0.5
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 4.6 |  | 4.6
Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 11.4 |  | 15.0
Nonaccrual loans | 5.1 |  | 4.5
Financing Receivable, Allowance for Credit Loss, Writeoff | 4.7 | 3.8 | 15.4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 886.8 |  | 936.6
Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 7.0 |  | 14.8
Nonaccrual loans | 31.3 |  | 33.5
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 103.7 |  | 473.5
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 442.2 |  | 373.9
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 337.1 |  | 392.9
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 366.5 |  | 324.2
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 294.1 |  | 173.7
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 375.6 |  | 259.2
Financing Receivable, Excluding Accrued Interest, Revolving | 837.1 |  | 821.6
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 14.3 |  | 10.4
Financing Receivable, Allowance for Credit Loss, Writeoff | 2.9 | 4.0 | 59.4
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 2,770.6 |  | 2,829.4
Commercial | Pass |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 98.1 |  | 438.8
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 401.3 |  | 353.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 313.5 |  | 375.9
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 344.4 |  | 316.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 284.4 |  | 165.9
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 370.4 |  | 255.2
Financing Receivable, Excluding Accrued Interest, Revolving | 778.7 |  | 767.3
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 13.9 |  | 8.9
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 2,604.7 |  | 2,681.0
Commercial | Other Assets Especially Mentioned |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.5 |  | 3.9
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 9.8 |  | 13.9
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 13.3 |  | 3.1
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 7.2 |  | 2.2
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 3.0 |  | 6.2
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.7 |  | 0.6
Financing Receivable, Excluding Accrued Interest, Revolving | 25.4 |  | 19.1
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 59.9 |  | 49.0
Commercial | Substandard |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 4.6 |  | 30.8
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 28.0 |  | 5.4
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 10.3 |  | 12.8
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 13.8 |  | 5.5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 6.3 |  | 1.6
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 4.5 |  | 3.4
Financing Receivable, Excluding Accrued Interest, Revolving | 33.0 |  | 35.2
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.4 |  | 1.5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 100.9 |  | 96.2
Commercial | Doubtful |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.5 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3.1 |  | 1.6
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  | 1.1
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 1.1 |  | 0.5
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.4 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 5.1 |  | 3.2
Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 12.3 |  | 5.2
Nonaccrual loans | 31.5 |  | 20.9
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 23.1 |  | 136.7
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 105.2 |  | 61.4
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 30.8 |  | 40.4
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 37.6 |  | 16.8
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 14.4 |  | 14.9
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 17.1 |  | 5.9
Financing Receivable, Excluding Accrued Interest, Revolving | 357.5 |  | 410.4
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 10.1 |  | 1.4
Financing Receivable, Allowance for Credit Loss, Writeoff | 2.9 | $ 0.0 | 0.3
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 595.8 |  | 687.9
Agricultural | Pass |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 14.6 |  | 109.6
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 83.5 |  | 34.1
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 26.8 |  | 39.4
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 35.7 |  | 16.6
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 14.0 |  | 13.5
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 16.3 |  | 5.8
Financing Receivable, Excluding Accrued Interest, Revolving | 329.0 |  | 379.4
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.1 |  | 1.1
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 520.0 |  | 599.5
Agricultural | Other Assets Especially Mentioned |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 3.8 |  | 4.1
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1.3 |  | 1.4
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.8 |  | 0.9
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 1.8 |  | 0.2
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.4 |  | 0.9
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.3 |  | 0.1
Financing Receivable, Excluding Accrued Interest, Revolving | 20.7 |  | 5.1
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 29.1 |  | 12.7
Agricultural | Substandard |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 4.7 |  | 4.1
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 20.3 |  | 25.9
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.6 |  | 0.1
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.1 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.5
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.5 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 5.8 |  | 25.9
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 10.0 |  | 0.3
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 42.0 |  | 56.8
Agricultural | Doubtful |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 18.9
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.1 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 2.6 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 2.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 4.7 |  | 18.9
Other, including overdrafts |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
Nonaccrual loans | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 1.8 |  | 1.6
Loans And Leases Held For Investment [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 93.2 |  | 66.5
Nonaccrual loans | 191.9 |  | 138.3
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 17,387.9 |  | 17,856.0
Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.7 |  | 1.1
Nonaccrual loans | 0.6 |  | 0.6
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 14.4 |  | 46.9
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 40.5 |  | 25.5
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 22.0 |  | 18.7
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 16.0 |  | 10.1
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 8.7 |  | 4.2
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 8.1 |  | 5.3
Financing Receivable, Excluding Accrued Interest, Revolving | 22.5 |  | 23.2
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.2 |  | 0.1
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.0 |  | 3.9
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 132.4 |  | 134.0
Consumer Loan | Performing Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 14.4 |  | 46.5
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 40.3 |  | 25.4
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 21.9 |  | 18.5
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 15.9 |  | 10.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 8.6 |  | 4.2
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 8.0 |  | 5.2
Financing Receivable, Excluding Accrued Interest, Revolving | 22.5 |  | 23.2
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.2 |  | 0.1
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 131.8 |  | 133.1
Consumer Loan | Nonperforming Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 0.4
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.2 |  | 0.1
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.1 |  | 0.2
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.1 |  | 0.1
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.1 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.1 |  | 0.1
Financing Receivable, Excluding Accrued Interest, Revolving | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 0.6 |  | 0.9
Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.8 |  | 2.2
Nonaccrual loans | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 74.2 |  | 77.6
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.0 |  | 3.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 74.2 |  | 77.6
Credit Card Receivable [Member] | Performing Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 73.5 |  | 76.6
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 73.5 |  | 76.6
Credit Card Receivable [Member] | Nonperforming Financial Instruments [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, Revolving | 0.7 |  | 1.0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan | 0.0 |  | 0.0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process | 0.7 |  | 1.0
30 to 59 Days Past Due |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccrual loans | 14.8 |  | 13.5
30 to 59 Days Past Due | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.4 |  | 4.9
30 to 59 Days Past Due | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 3.6 |  | 3.7
30 to 59 Days Past Due | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 10.7 |  | 6.6
30 to 59 Days Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 10.1 |  | 7.6
30 to 59 Days Past Due | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 25.8 |  | 22.8
30 to 59 Days Past Due | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 7.2 |  | 8.4
30 to 59 Days Past Due | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 8.4 |  | 9.7
30 to 59 Days Past Due | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 4.4 |  | 11.2
30 to 59 Days Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 11.0 |  | 2.4
30 to 59 Days Past Due | Other, including overdrafts |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
30 to 59 Days Past Due | Loans And Leases Held For Investment [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 49.6 |  | 46.1
30 to 59 Days Past Due | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.5 |  | 0.6
30 to 59 Days Past Due | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.7 |  | 0.7
60 to 89 Days Past Due |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccrual loans | 28.3 |  | 6.2
60 to 89 Days Past Due | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 28.5 |  | 2.8
60 to 89 Days Past Due | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
60 to 89 Days Past Due | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.4 |  | 2.7
60 to 89 Days Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 7.0 |  | 2.8
60 to 89 Days Past Due | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 35.9 |  | 8.3
60 to 89 Days Past Due | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.6 |  | 2.6
60 to 89 Days Past Due | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 2.2 |  | 3.3
60 to 89 Days Past Due | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.3 |  | 3.0
60 to 89 Days Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.2 |  | 2.8
60 to 89 Days Past Due | Other, including overdrafts |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
60 to 89 Days Past Due | Loans And Leases Held For Investment [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 40.6 |  | 17.4
60 to 89 Days Past Due | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.2 |  | 0.2
60 to 89 Days Past Due | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.4 |  | 0.5
Equal to or Greater than 90 Days Past Due |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccrual loans | 76.9 |  | 40.5
Equal to or Greater than 90 Days Past Due | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
Equal to or Greater than 90 Days Past Due | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
Equal to or Greater than 90 Days Past Due | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.7 |  | 0.4
Equal to or Greater than 90 Days Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.1 |  | 0.0
Equal to or Greater than 90 Days Past Due | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.8 |  | 0.4
Equal to or Greater than 90 Days Past Due | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.1 |  | 0.7
Equal to or Greater than 90 Days Past Due | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.8 |  | 2.0
Equal to or Greater than 90 Days Past Due | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.3 |  | 0.6
Equal to or Greater than 90 Days Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.1 |  | 0.0
Equal to or Greater than 90 Days Past Due | Other, including overdrafts |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.0
Equal to or Greater than 90 Days Past Due | Loans And Leases Held For Investment [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 3.0 |  | 3.0
Equal to or Greater than 90 Days Past Due | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.0 |  | 0.3
Equal to or Greater than 90 Days Past Due | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 0.7 |  | 1.0
Financial Asset, Not Past Due | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 9,083.3 |  | 9,200.1
Financial Asset, Not Past Due | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1,089.7 |  | 1,237.6
Financial Asset, Not Past Due | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 2,133.0 |  | 2,166.5
Financial Asset, Not Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 640.4 |  | 685.4
Financial Asset, Not Past Due | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 12,946.4 |  | 13,289.6
Financial Asset, Not Past Due | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 666.8 |  | 709.4
Financial Asset, Not Past Due | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 870.3 |  | 917.1
Financial Asset, Not Past Due | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 2,732.3 |  | 2,781.1
Financial Asset, Not Past Due | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 552.0 |  | 661.8
Financial Asset, Not Past Due | Other, including overdrafts |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 1.8 |  | 1.6
Financial Asset, Not Past Due | Loans And Leases Held For Investment [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 17,102.8 |  | 17,651.2
Financial Asset, Not Past Due | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 131.1 |  | 132.3
Financial Asset, Not Past Due | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Loan in Process | 72.4 |  | 75.4
Year One, Originated, Current Fiscal Year |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 22.5
Year One, Originated, Current Fiscal Year | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.2
Year One, Originated, Current Fiscal Year | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Year One, Originated, Current Fiscal Year | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year One, Originated, Current Fiscal Year | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.2
Year One, Originated, Current Fiscal Year | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.5
Year One, Originated, Current Fiscal Year | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.7
Year One, Originated, Current Fiscal Year | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 21.6
Year One, Originated, Current Fiscal Year | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year One, Originated, Current Fiscal Year | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.2
Year One, Originated, Current Fiscal Year | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Two, Originated, Fiscal Year Before Current Fiscal Year |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 4.0 |  | 10.7
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 5.7
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.2 |  | 0.2
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.2 |  | 5.9
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.6 |  | 2.0
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.8 |  | 2.6
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.1 |  | 2.2
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 2.9 |  | 0.0
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.2 |  | 0.6
Year Two, Originated, Fiscal Year Before Current Fiscal Year | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Three, Originated, Two Years before Current Fiscal Year |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 3.0 |  | 18.7
Year Three, Originated, Two Years before Current Fiscal Year | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Year Three, Originated, Two Years before Current Fiscal Year | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 13.1
Year Three, Originated, Two Years before Current Fiscal Year | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.1 |  | 0.2
Year Three, Originated, Two Years before Current Fiscal Year | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.1 |  | 13.3
Year Three, Originated, Two Years before Current Fiscal Year | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.9 |  | 3.4
Year Three, Originated, Two Years before Current Fiscal Year | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.1 |  | 4.3
Year Three, Originated, Two Years before Current Fiscal Year | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.8 |  | 1.1
Year Three, Originated, Two Years before Current Fiscal Year | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Three, Originated, Two Years before Current Fiscal Year | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.2 |  | 0.9
Year Three, Originated, Two Years before Current Fiscal Year | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Four, Originated, Three Years before Current Fiscal Year |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.1 |  | 21.4
Year Four, Originated, Three Years before Current Fiscal Year | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 19.4
Year Four, Originated, Three Years before Current Fiscal Year | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Year Four, Originated, Three Years before Current Fiscal Year | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.1
Year Four, Originated, Three Years before Current Fiscal Year | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 19.5
Year Four, Originated, Three Years before Current Fiscal Year | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.7 |  | 1.1
Year Four, Originated, Three Years before Current Fiscal Year | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.8 |  | 1.3
Year Four, Originated, Three Years before Current Fiscal Year | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.3 |  | 0.3
Year Four, Originated, Three Years before Current Fiscal Year | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.3
Year Four, Originated, Three Years before Current Fiscal Year | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.1 |  | 0.2
Year Four, Originated, Three Years before Current Fiscal Year | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Five, Originated, Four Years before Current Fiscal Year |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.3 |  | 0.9
Year Five, Originated, Four Years before Current Fiscal Year | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Year Five, Originated, Four Years before Current Fiscal Year | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.1
Year Five, Originated, Four Years before Current Fiscal Year | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.3
Year Five, Originated, Four Years before Current Fiscal Year | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.4
Year Five, Originated, Four Years before Current Fiscal Year | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.2 |  | 0.4
Year Five, Originated, Four Years before Current Fiscal Year | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.2 |  | 0.4
Year Five, Originated, Four Years before Current Fiscal Year | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.1 |  | 0.1
Year Five, Originated, Four Years before Current Fiscal Year | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Five, Originated, Four Years before Current Fiscal Year | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Year Five, Originated, Four Years before Current Fiscal Year | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Originated, More than Five Years before Current Fiscal Year |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.8 |  | 3.3
Originated, More than Five Years before Current Fiscal Year | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.1
Originated, More than Five Years before Current Fiscal Year | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Originated, More than Five Years before Current Fiscal Year | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.2
Originated, More than Five Years before Current Fiscal Year | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.3
Originated, More than Five Years before Current Fiscal Year | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.3 |  | 1.1
Originated, More than Five Years before Current Fiscal Year | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.8 |  | 2.9
Originated, More than Five Years before Current Fiscal Year | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.1
Originated, More than Five Years before Current Fiscal Year | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Originated, More than Five Years before Current Fiscal Year | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.5 |  | 1.8
Originated, More than Five Years before Current Fiscal Year | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.6 |  | 34.2
Revolving | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Revolving | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Revolving | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.0 |  | 3.1
Revolving | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.6 |  | 31.1
Revolving | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.1
Revolving | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1.0 |  | 3.0
Revolving, Converted to Term |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 3.0
Revolving, Converted to Term | Commercial real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Revolving, Converted to Term | Total construction loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | 0.0
Revolving, Converted to Term | Residential |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving, Converted to Term | Total real estate |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving, Converted to Term | Indirect consumer |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving, Converted to Term | Total consumer loans |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.1
Revolving, Converted to Term | Commercial |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 2.9
Revolving, Converted to Term | Agricultural |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.0
Revolving, Converted to Term | Consumer Loan |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0.0 |  | 0.1
Revolving, Converted to Term | Credit Card Receivable [Member] |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ 0.0 |  | $ 0.0

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