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Schedule V - Valuation and Qualifying Accounts
 9 Months Ended
Sep. 30, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule V - Valuation and Qualifying Accounts
SCHEDULE V - VALUATION AND QUALIFYING ACCOUNTS
The following table shows the movement in the Company’s bad debt provision during the twelve months ended December 31, 2023, 2022 and 2021:
Provisions for Bad Debt
Balance at
Beginning of
Year
Charged to
Costs and
Expenses
Charged to
Other
Accounts 
Deductions
Balance at
End of Year
($ in millions)
2023
Premiums receivable from underwriting activities$25.0 $(4.0)$— $— $21.0 
Reinsurance$— $— $— $— $— 
2022
Premiums receivable from underwriting activities$30.2 $(5.2)$— $— $25.0 
Reinsurance$— $— $— $— $— 
2021
Premiums receivable from underwriting activities$34.0 $(3.8)$— $— $30.2 
Reinsurance$— $— $— $— $—