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Schedule III - Supplementary Insurance Information
9 Months Ended
Sep. 30, 2024
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]  
Schedule III - Supplementary Insurance Information
SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION
Supplementary Information
($ in millions)
Year Ended December 31, 2023
Deferred
Policy
Acquisition
Costs 
Net
Reserves
for Losses
and LAE 
Net
Reserves
for
Unearned
Premiums
Net
Earned
Premiums
Net
Investment
Income
Losses and
LAE
Expenses
Policy
Acquisition
Expenses
Net
Written
Premiums
General
and
Administrative
Expenses 
Reinsurance$201.5 $1,373.1 $644.5 $1,154.5 $611.1 $208.6 $1,098.0 $120.6 
Insurance94.7 1,859.7 1,048.3 1,460.0 941.9 171.6 1,483.9 233.9 
Total$296.2 $3,232.8 $1,692.8 $2,614.5 $275.7 $1,553.0 $380.2 $2,581.9 $354.5 
Year to date December 31, 2022
Deferred
Policy
Acquisition
Costs 
Net
Reserves
for Losses
and LAE 
Net
Reserves
for
Unearned
Premiums
Net
Earned
Premiums
Net
Investment
Income 
Losses and
LAE
Expenses 
Policy
Acquisition
Expenses 
Net
Written
Premiums 
General
and
Administrative
Expenses 
Reinsurance$227.2 $1,360.7 $862.4 $1,251.8 $770.3 $252.4 $1,426.4 $142.5 
Insurance91.8 1,452.5 857.8 1,436.9 909.7 179.4 1,469.6 244.0 
Total$319.0 $2,813.2 $1,720.2 $2,688.7 $188.1 $1,680.0 $431.8 $2,896.0 $386.5 
Year to date December 31, 2021
Deferred
Policy
Acquisition
Costs 
Net
Reserves
for Losses
and LAE 
Net
Reserves
for
Unearned
Premiums
Net
Earned
Premiums
Net
Investment
Income 
Losses and
LAE
Expenses 
Policy
Acquisition
Expenses 
Net
Written
Premiums 
General
and
Administrative
Expenses 
Reinsurance$205.2 $2,148.4 $688.6 $1,118.8 $705.2 $221.6 $1,199.0 $121.3 
Insurance85.6 2,165.3 827.6 1,291.7 988.1 192.5 1,388.7 211.8 
Total$290.8 $4,313.7 $1,516.2 $2,410.5 $147.5 $1,693.3 $414.1 $2,587.7 $333.1