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Loans Held for Investment - Schedule of Allowance for Credit Losses for Loans Held for Investment (Details) |  | 3 Months Ended |
--- | --- | --- | ---
Mar. 13, 2023 USD ($) | Mar. 31, 2023 USD ($) Investments | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) Investments
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | $ 220,100,000 | $ 122,300,000 |
Provision charged to operating expense |  | 15,200,000 | 61,300,000 |
Loans Charged-Off(2) |  | (8,900,000) | (19,900,000) |
Ending balance |  | 226,100,000 | 247,200,000 |
Provisional ACL Recorded for PCD loans |  |  | 84,300,000 |
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) |  | 12,200,000 | 57,300,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 2,700,000 | 3,200,000 |
Interest Receivable |  | 113,700,000 |  | $ 118,300,000
Debt Securities, Available-for-sale, Realized Loss |  | $ (23,400,000) | 0 |
Debt Securities, Held-To-Maturity, After Allowance For Credit Loss, Transfer, Amount | $ 13,200,000 |  |  |
Allowance for Credit Losses | 800,000 |  |  | $ 0
Investment securities in an unrealized loss position (securities) | Investments |  | 1,023 |  | 1,222
Debt Securities, Available-for-sale, Realized Gain |  | $ 0 | 0 |
Securities Sold under Agreements to Repurchase, Fair Value of Collateral |  | 3,607,300,000 |  | $ 4,998,900,000
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure |  | 3,228,500,000 |  | 4,432,000,000
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Transfer, Amount | $ 23,000,000 |  |  |
Callable Within One Year |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Amortized cost of investment securities callable after one year but within five years |  | 1,525,900,000 |  |
Fair value of investment securities callable after one year but within five years |  | 1,446,900,000 |  |
Callable structured notes amortized costs |  | 0 |  |
Debt Securities |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Interest Receivable |  | 35,600,000 |  | $ 38,900,000
Commercial Real Estate Non Owner Occupied Loans [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 27,200,000 | 17,300,000 |
Provision charged to operating expense |  | 1,300,000 | 6,700,000 |
Loans Charged-Off(2) |  | (2,500,000) | (2,900,000) |
Ending balance |  | 26,000,000.0 | 45,200,000 |
Provisional ACL Recorded for PCD loans |  |  | 24,100,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 0 |
Agricultural Financing Receivable [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 3,200,000 | 300,000 |
Provision charged to operating expense |  | (1,100,000) | (500,000) |
Loans Charged-Off(2) |  | 0 | (5,300,000) |
Ending balance |  | 2,400,000 | (1,000,000.0) |
Provisional ACL Recorded for PCD loans |  |  | 3,400,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 300,000 | 1,100,000 |
Commercial and Floor Plans [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 49,000,000.0 | 27,100,000 |
Provision charged to operating expense |  | (800,000) | 18,400,000 |
Loans Charged-Off(2) |  | (600,000) | (4,200,000) |
Ending balance |  | 48,500,000 | 52,900,000 |
Provisional ACL Recorded for PCD loans |  |  | 11,200,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 900,000 | 400,000 |
Commercial Real Estate Owner Occupied [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 19,500,000 | 13,300,000 |
Provision charged to operating expense |  | (200,000) | 4,600,000 |
Loans Charged-Off(2) |  | (1,800,000) | (2,200,000) |
Ending balance |  | 17,600,000 | 25,200,000 |
Provisional ACL Recorded for PCD loans |  |  | 9,500,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 100,000 | 0 |
Commercial Real Estate Multi-family [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 27,900,000 | 13,300,000 |
Provision charged to operating expense |  | 7,100,000 | 11,400,000 |
Loans Charged-Off(2) |  | 0 | 0 |
Ending balance |  | 35,000,000.0 | 54,600,000 |
Provisional ACL Recorded for PCD loans |  |  | 29,900,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 0 |
Commercial real estate |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 74,600,000 | 43,900,000 |
Provision charged to operating expense |  | 8,200,000 | 22,700,000 |
Loans Charged-Off(2) |  | (4,300,000) | (5,100,000) |
Ending balance |  | 78,600,000 | 125,000,000.0 |
Provisional ACL Recorded for PCD loans |  |  | 63,500,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 100,000 | 0 |
Land Acquisition And Development Construction Financing Receivable [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 1,300,000 | 500,000 |
Provision charged to operating expense |  | 300,000 | (800,000) |
Loans Charged-Off(2) |  | 0 | (2,700,000) |
Ending balance |  | 1,600,000 | 500,000 |
Provisional ACL Recorded for PCD loans |  |  | 3,400,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 100,000 |
Residential construction |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 3,600,000 | 2,400,000 |
Provision charged to operating expense |  | 100,000 | 900,000 |
Loans Charged-Off(2) |  | 0 | 0 |
Ending balance |  | 3,700,000 | 3,300,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 0 |
Commercial construction |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 31,200,000 | 6,000,000.0 |
Provision charged to operating expense |  | 5,900,000 | 4,000,000.0 |
Loans Charged-Off(2) |  | 0 | 0 |
Ending balance |  | 37,100,000 | 10,200,000 |
Provisional ACL Recorded for PCD loans |  |  | 200,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 0 |
Construction Loans [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 36,100,000 | 8,900,000 |
Provision charged to operating expense |  | 6,300,000 | 4,100,000 |
Loans Charged-Off(2) |  | 0 | (2,700,000) |
Ending balance |  | 42,400,000 | 14,000,000.0 |
Provisional ACL Recorded for PCD loans |  |  | 3,600,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 100,000 |
Residential Real Estate 1-4 Family [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 20,500,000 | 13,400,000 |
Provision charged to operating expense |  | (200,000) | 5,200,000 |
Loans Charged-Off(2) |  | (100,000) | (100,000) |
Ending balance |  | 20,200,000 | 18,700,000 |
Provisional ACL Recorded for PCD loans |  |  | 100,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 100,000 |
Home Equity Line of Credit [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 1,600,000 | 1,200,000 |
Provision charged to operating expense |  | 300,000 | 100,000 |
Loans Charged-Off(2) |  | (400,000) | 0 |
Ending balance |  | 1,500,000 | 1,400,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 100,000 |
Residential Real Estate [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 22,100,000 | 14,600,000 |
Provision charged to operating expense |  | 100,000 | 5,300,000 |
Loans Charged-Off(2) |  | (500,000) | (100,000) |
Ending balance |  | 21,700,000 | 20,100,000 |
Provisional ACL Recorded for PCD loans |  |  | 100,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 200,000 |
Agricultural Real Estate Financing Receivable [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 5,900,000 | 1,900,000 |
Provision charged to operating expense |  | (1,200,000) | 6,400,000 |
Loans Charged-Off(2) |  | 0 | (100,000) |
Ending balance |  | 4,800,000 | 10,500,000 |
Provisional ACL Recorded for PCD loans |  |  | 2,300,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 100,000 | 0 |
Real Estate Financing Receivable [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 138,700,000 | 69,300,000 |
Provision charged to operating expense |  | 13,400,000 | 38,500,000 |
Loans Charged-Off(2) |  | (4,800,000) | (8,000,000.0) |
Ending balance |  | 147,500,000 | 169,600,000 |
Provisional ACL Recorded for PCD loans |  |  | 69,500,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 200,000 | 300,000 |
Consumer Indirect Financing Receivable [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 15,300,000 | 14,300,000 |
Provision charged to operating expense |  | 600,000 | (300,000) |
Loans Charged-Off(2) |  | (1,800,000) | (900,000) |
Ending balance |  | 14,800,000 | 13,500,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 700,000 | 400,000 |
Direct consumer |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 5,200,000 | 4,600,000 |
Provision charged to operating expense |  | 100,000 | (100,000) |
Loans Charged-Off(2) |  | (1,100,000) | (800,000) |
Ending balance |  | 4,500,000 | 4,600,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 300,000 | 900,000 |
Credit Card Receivable [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 2,800,000 | 2,200,000 |
Provision charged to operating expense |  | 0 | 600,000 |
Loans Charged-Off(2) |  | (500,000) | (600,000) |
Ending balance |  | 2,500,000 | 2,300,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 200,000 | 100,000 |
Consumer |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 23,300,000 | 21,100,000 |
Provision charged to operating expense |  | 700,000 | 200,000 |
Loans Charged-Off(2) |  | (3,400,000) | (2,300,000) |
Ending balance |  | 21,800,000 | 20,400,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 1,200,000 | 1,400,000 |
Commercial Purpose secured by 1-4 Family [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 5,700,000 | 4,400,000 |
Provision charged to operating expense |  | (200,000) | 400,000 |
Loans Charged-Off(2) |  | 0 | 0 |
Ending balance |  | 5,600,000 | 5,000,000.0 |
Provisional ACL Recorded for PCD loans |  |  | 200,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 100,000 | 0 |
Commercial Borrower [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 200,000 | 100,000 |
Provision charged to operating expense |  | 200,000 | 300,000 |
Loans Charged-Off(2) |  | (100,000) | (100,000) |
Ending balance |  | 300,000 | 300,000 |
Provisional ACL Recorded for PCD loans |  |  | 0 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 | 0 |
Commercial Portfolio Segment [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance |  | 54,900,000 | 31,600,000 |
Provision charged to operating expense |  | (800,000) | 19,100,000 |
Loans Charged-Off(2) |  | (700,000) | (4,300,000) |
Ending balance |  | 54,400,000 | 58,200,000 |
Provisional ACL Recorded for PCD loans |  |  | 11,400,000 |
Financing Receivable, Allowance for Credit Loss, Recovery |  | $ 1,000,000.0 | 400,000 |
Agriculture Portfolio Segment [Member] |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Provisional ACL Recorded for PCD loans |  |  | $ 3,400,000 |

X
- Definition Available-for-Sale and Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions + References No definition available. + Details
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