v3.24.1.u1
Future Policy Benefits - Summary of separate accounts (Details) - Universal Life - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Liabilities for Guarantees on Long-Duration Contracts [Line Items]    
Account value $ 3,773 $ 3,556
Net amount at risk $ 73,092 $ 70,014
Average attained age of contract holders 53 years 53 years