XML 50 R40.htm IDEA: XBRL DOCUMENT v3.23.2
Investments (Narrative) (Details)
$ in Billions
6 Months Ended
Jun. 30, 2023
USD ($)
security
Jun. 30, 2022
USD ($)
Dec. 31, 2022
security
Investments [Abstract]      
Percentage of fixed maturity portfolio rated investment grade based on NAIC designations 98.00%   98.00%
Number of securities in unrealized loss position | security 4,300   4,510
Percentage of unrealized losses on fixed maturity securities where securities are rated investment grade 98.00%   98.00%
Proceeds from sales of available for sale fixed maturity securities $ 3.7 $ 2.1  
Principal repayments, calls and tenders for available for sale fixed maturity securities $ 1.4 $ 1.3