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Insurance Operations (Tables) | 12 Months Ended
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Dec. 31, 2023
Insurance [Abstract] |
Summary of Reconciliations of Direct to Net premiums on Written and Earned Basis Related to Wholly Owned Underwriting Enterprise Subsidiary | Reconciliations of direct to net premiums, on a written and earned basis, for 2023, 2022 and 2021 related to the wholly-owned underwriting enterprise subsidiary discussed above are as follows (in millions):
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | Written |  |  | Earned |  |  | Written |  |  | Earned |  |  | Written |  |  | Earned |
Direct |  | $ | 19.8 |  |  | $ | 24.8 |  |  | $ | 24.4 |  |  | $ | 28.7 |  |  | $ | 30.9 |  |  | $ | 35.9 |
Assumed |  |  | — |  |  |  | 0.4 |  |  |  | 0.4 |  |  |  | 0.2 |  |  |  | 0.2 |  |  |  | 0.2 |
Ceded |  |  | (19.8 | ) |  |  | (25.2 | ) |  |  | (24.8 | ) |  |  | (28.9 | ) |  |  | (31.1 | ) |  |  | (36.1 | )
Net |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 605 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479655/944-605-50-1 + Details
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- References No definition available. + Details
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