XML 93 R72.htm IDEA: XBRL DOCUMENT v3.24.0.1
Investments (Components Of Net Investment Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Investment Income, Reported Amounts, by Category [Line Items]      
Dividends on equity securities $ 116,911 $ 107,213 $ 98,099
Total investment income 751,754 464,013 384,419
Investment expenses (17,222) (17,258) (17,002)
Net investment income 734,532 446,755 367,417
Fixed maturities [Member]      
Schedule of Investment Income, Reported Amounts, by Category [Line Items]      
Interest income 383,022 294,417 283,366
Short-term investments [Member]      
Schedule of Investment Income, Reported Amounts, by Category [Line Items]      
Interest income 106,747 33,493 2,475
Cash and cash equivalents [Member]      
Schedule of Investment Income, Reported Amounts, by Category [Line Items]      
Interest income $ 145,074 $ 28,890 $ 479