XML 107 R86.htm IDEA: XBRL DOCUMENT v3.25.1
Reserves for Losses and Adjustment Expenses - Reconciliation of Beginning and Ending Consolidated Loss and Loss Adjustment Expenses (LAE) Reserves (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 10, 2022
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
May 30, 2022
Dec. 31, 2021
Jan. 01, 2020
Insurance [Abstract]              
Provision for losses and LAE, beginning balance   $ 7,810.6 $ 7,710.9 $ 7,611.8      
Less reinsurance recoverable     (4,577.8) (4,897.7)   $ (3,298.1)  
Net loss and LAE expenses disposed (1)   0.0 0.0 1,840.1      
Net losses and LAE reserves, beginning balance   3,232.8 2,813.2 4,313.7      
Movement in net reserve for losses and LAE for claims incurred:              
Current year   1,682.2 1,492.2 1,651.9      
Prior Year   35.6 60.8 28.1      
Total incurred   1,717.8 1,553.0 1,680.0      
Net Losses and LAE payments for claims incurred:              
Current year   (200.2) (161.1) (192.7)      
Prior years   (741.3) (1,011.9) (1,098.4)      
Total paid   (941.5) (1,173.0) (1,291.1)      
Foreign exchange (gains)/losses   (58.5) 39.6 (49.3)      
Net reserve for losses and LAE at the start of the year   3,950.6 3,232.8 2,813.2   $ 4,313.7  
Plus reinsurance recoverable on unpaid losses at the end of the year   4,172.0 4,577.8 4,897.7      
Reserve for losses and LAE at the end of the year   8,122.6 7,810.6 7,710.9      
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]              
Reinsurance recoverable on unpaid losses   4,172.0 4,577.8        
Plus reinsurance recoverable on unpaid losses at the end of the year   4,172.0 4,577.8 4,897.7      
Prior Year   35.6 60.8 28.1      
Reinsurance Contracts [Axis]: LPT              
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]              
Reinsurance recoverable total         $ 2,610.1    
Reinsurance recoverables, premium paid and recognized         $ 1,840.1    
Reinsurance Contracts [Axis]: Retroactive Reinsurance              
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]              
Reinsurance recoverable on unpaid losses   1,190.9 1,627.4        
Insurance              
Insurance [Abstract]              
Provision for losses and LAE, beginning balance   1,859.7 1,452.5        
Net losses and LAE reserves, beginning balance   1,859.7 1,452.5        
Net Losses and LAE payments for claims incurred:              
Net reserve for losses and LAE at the start of the year   2,259.1 1,859.7 1,452.5      
Reserve for losses and LAE at the end of the year   $ 2,259.1 $ 1,859.7 $ 1,452.5      
Enstar              
Net Losses and LAE payments for claims incurred:              
Plus reinsurance recoverable on unpaid losses at the end of the year             $ 770.0
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]              
Plus reinsurance recoverable on unpaid losses at the end of the year             $ 770.0
Enstar | Reinsurance Contracts [Axis]: LPT net losses reinsured              
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]              
Reinsurance, Excess Retention, Amount Reinsured, Per Event $ 3,120.0