XML 141 R69.htm IDEA: XBRL DOCUMENT v3.24.0.1
RESERVE FOR LOSSES AND LAE - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 20, 2019
USD ($)
Dec. 31, 2023
USD ($)
group_
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2015
USD ($)
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Current year losses   $ 8,432 $ 8,102 $ 7,400  
Prior years   $ (5) (2) $ (9)  
Number of exposure groupings | group_   200      
Contracts of insurance and reinsurance received claims during the past three years, in years   20 years      
Liabilities retroceded, percentage         100.00%
Retrocession agreement, consideration transferred         $ 140
Maximum liability retroceded $ 450       440
Total amount of liabilities retroceded         $ 300
Decrease in amount of liabilities retroceded $ 43        
Increase (decrease) in A&E reserves     138    
Reinsurance recoverable for paid and unpaid losses   $ 2,300 2,200    
Munich Reinsurance Company          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Reinsurance recoverable for paid and unpaid losses   266      
Endurance Re          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Reinsurance recoverable for paid and unpaid losses   $ 163      
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk | Munich Reinsurance Company          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Concentration risk, percentage   11.80%      
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk | Endurance Re          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Concentration risk, percentage   7.20%      
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk | Other Retrocessionaire          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Concentration risk, percentage   5.00%      
Higher Premiums Earned          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Current year losses   $ 916 45    
Prior years   (397) 392    
Catastrophe Losses          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Current year losses   (585) $ (80)    
Mt Logan Re          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Reinsurance recoverable for paid and unpaid losses   $ 413      
Mt Logan Re | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk          
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]          
Concentration risk, percentage   18.30%