XML 168 R123.htm IDEA: XBRL DOCUMENT v3.20.4
Reinsurance and Indemnification - North Carolina Reinsurance Facility (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Reinsurance Retention Policy [Line Items]        
Insurance premiums $ 39,517.0   $ 38,577.0 $ 36,513.0
Recoverables 7,033.0      
North Carolina Reinsurance Facility        
Reinsurance Retention Policy [Line Items]        
Funds deficit in member's equity   $ 125.0    
Net income   15.0    
Insurance premiums   1,100.0    
Paid 8.6      
Recoverables $ 58.4      
Private Passenger Auto Risk Recoupment | North Carolina Reinsurance Facility        
Reinsurance Retention Policy [Line Items]        
Insurance premiums   170.0    
Member Loss Recoupments | North Carolina Reinsurance Facility        
Reinsurance Retention Policy [Line Items]        
Insurance premiums   $ 69.7