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v3.22.4

Investment Securities - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) security | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Summary of Investment Holdings [Line Items] |  |  |
Investment securities held to maturity | $ 3,089,147,000 | $ 0 |
Fair value of securities transferred to held-for-maturity | 3,000,000,000 |  |
Unrealized loss | 125,200,000 |  |
Securities pledged to secure public and other funds, carrying value | 6,100,000,000 | 2,700,000,000 |
Transfers from available-for-sale to held-to-maturity | (148,900,000) |  |
Allowance for credit losses for available-for-sale debt securities | 0 | $ 0 |
Allowance for securities held-to-maturity | $ (150,000) |  |
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets |
Accrued interest receivable | $ 50,900,000 | $ 35,500,000 |
Number of securities in security portfolio | security | 3,150 |  |
Number of securities in unrealized loss position | security | 2,803 |  |
Equity securities, at fair value | $ 52,507,000 | 13,211,000 |
(Losses) gains on equity securities | (4,900,000) | 200,000 | $ 1,400,000
Impairments on equity securities without readily determinable fair value | 0 | 0 | $ 100,000
Downward adjustments on equity securities without readily determinable fair value | 0 | 0 |
Other Assets |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Equity securities without readily determinable fair value | 396,800,000 | $ 186,000,000 |
Other Assets | Partnership Interest |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Equity securities without readily determinable fair value | 240,100,000 |  |
Other Assets | Initiatives in Low-to-Moderate Income Neighborhoods |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Equity securities without readily determinable fair value | 156,800,000 |  |
Indiana |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Investment securities issued by states and political subdivisions, market value | $ 628,600,000 |  |
State and political subdivision investment, equity percentage | 12.30% |  |
Percentage of municipal bonds rated A or better | 99.70% |  |
Percentage of non rated local interest bonds | 0.30% |  |

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