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Deferred Policy Acquisition Costs (Tables) | 12 Months Ended
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Dec. 31, 2021
Insurance [Abstract] |
Reconciliation of beginning and ending deferred policy acquisition costs | The following table represents a reconciliation of beginning and ending deferred policy acquisition costs for the twelve months ended December 31, 2021 and 2020:
|  |  | Twelve Months Ended December 31, 2021 |  | Twelve Months Ended December 31, 2020
|  | ($ in millions)
Balance at the beginning of the period |  | $ | 306.6 |  |  | $ | 291.1 |
| Acquisition costs deferred |  | 398.3 |  |  | 481.2 |
| Amortization of deferred policy acquisition costs |  | (414.1) |  |  | (465.7) |
Balance at the end of the period |  | $ | 290.8 |  |  | $ | 306.6 |

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