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Credit Losses | 9 Months Ended
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Sep. 30, 2024
Credit Loss [Abstract] |
Allowance for Expected Credit Losses | Allowance for Expected Credit Losses The following tables summarize the Company’s allowance for expected credit losses for the twelve months ended December 31, 2023 and December 31, 2022 in available for sale investments, reinsurance recoverables and receivables:
Available for Sale Investments | December 31,
| 2023 |  | 2022
| ($ in millions)
Balance at the beginning of the period | $ | 7.7 |  |  | $ | 2.7 |
Additions to the allowance for credit losses on securities for which credit losses were not previously recognized | 0.3 |  |  | 5.4 |
Increases/(decreases) to the allowance for credit losses on securities that had an allowance in the prior period | (3.6) |  |  | 0.2 |
Reductions to the allowance for securities sold | (1.5) |  |  | (0.6) |
Balance at the end of the period | $ | 2.9 |  |  | $ | 7.7 |
| December 31, 2023 |  | December 31, 2022
| ($ in millions) |  | ($ in millions)
| Reinsurance Recoverables |  | Receivables |  | Reinsurance Recoverables |  | Receivables
Balance at the beginning of the year | $ | 3.7 |  |  | $ | 25.0 |  |  | $ | 3.3 |  |  | $ | 30.2 |
Movement in the year | — |  |  | (4.0) |  |  | 0.4 |  |  | (5.2) |
Balance at the end of the year | $ | 3.7 |  |  | $ | 21.0 |  |  | $ | 3.7 |  |  | $ | 25.0 |

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- Definition The entire disclosure for allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -Publisher FASB -URI https://asc.fasb.org//310/tableOfContent + Details
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- References No definition available. + Details
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