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Deferred Policy Acquisition Costs (Tables)
 12 Months Ended
Dec. 31, 2024
Insurance [Abstract]  
Reconciliation of beginning and ending deferred policy acquisition costs
The following table represents a reconciliation of beginning and ending deferred acquisition costs for the twelve months ended December 31, 2024 and 2023:
Twelve Months Ended December 31, 2024Twelve Months Ended December 31, 2023
($ in millions)
Balance at the beginning of the period$296.2 $319.0 
Acquisition costs deferred446.1 357.4 
Amortization of deferred acquisition costs(420.2)(380.2)
Balance at the end of the period$322.1 $296.2