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v3.22.1

Loans and Allowance for Credit Losses - Additional Information (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) loan portfolio segment | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Number of loan portfolios | portfolio | 4 |  |
Number of loan segments | segment | 7 |  |
Total loans | $ 28,336,244,000 |  | $ 13,601,846,000
Accrued interest receivable on loans | 96,200,000 |  | 47,600,000
Provision for loan losses | $ 78,531,000 | $ 0 |
Loan placed on nonaccrual when past due, number of days | 90 days |  |
Loan participations | $ 2,520,000,000 |  |
Loan participations sold | 1,328,000,000 |  |
Loan participations retained | $ 1,192,000,000 |  |
TDR term | 6 months |  |
Minimum number of days for loan charge off to be recorded | 120 days |  |
Maximum number of days for loan charge off to be recorded | 180 days |  |
Financing receivable TDRs included with non-accrual loans | $ 23,800,000 |  | 11,700,000
Financing receivable TDR specific reserves | 6,200,000 |  | 700,000
Unfunded commitments on TDRs | $ 0 |  | 0
Financing receivable, TDR, number of loans qualified for removal | loan | 1 |  |
Charge-offs | $ (9,000) | (15,000) |
Number of days for a loan to be considered to be in payment default | 90 days |  |
Troubled Debt Restructurings During Period |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Increase in allowance for loan losses | $ 5,500,000 | 0 |
Charge-offs | 0 | 0 |
First Midwest |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Provision for loan losses | 78,500,000 |  |
Increase in allowance for loan loss | 96,300,000 |  |
Commercial |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total loans | 8,624,253,000 |  | 3,391,769,000
Provision for loan losses | 35,040,000 | 0 |
Charge-offs | 0 | 0 |
Commercial | PPP Loans |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total loans | 205,300,000 |  | 169,000,000
Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total loans | $ 11,337,735,000 |  | $ 6,380,674,000
Percentage of risk-based capital | 236.00% |  |
Regulatory guideline limit | 300.00% |  |
Provision for loan losses | $ 42,601,000 | 0 |
Charge-offs | $ (4,000) | $ (8,000) |

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