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Off Balance Sheet Items (Details) - Affiliated Entity - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Insurance Fund Expense |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction expenses | $ 0.2 | $ 0.3 | $ 1.1
Management Expense |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction expenses | 0.1 | 0.4 | 0.3
Audit Fees |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transaction expenses | $ 0.9 | $ 0.8 | $ 0.4

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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