XML 65 R56.htm IDEA: XBRL DOCUMENT v3.23.2
Investments (Schedule of Fixed Maturity Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] $ 44,866,019 $ 46,999,183  
Fixed maturity securities, available for sale, gross unrealized gains 225,792 4,421,976  
Fixed maturity securities, available for sale, gross unrealized losses [2] (5,283,847) (112,370)  
Fixed maturity securities, available for sale, allowance for credit losses (3,347) (2,846) $ (64,771)
Fixed maturity securities, available for sale 39,804,617 51,305,943  
U.S. Government and agencies      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 173,638 1,046,029  
Fixed maturity securities, available for sale, gross unrealized gains 70 32,841  
Fixed maturity securities, available for sale, gross unrealized losses [2] (4,637) (124)  
Fixed maturity securities, available for sale, allowance for credit losses 0 0  
Fixed maturity securities, available for sale 169,071 1,078,746  
States, municipalities and territories      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 4,356,251 3,495,563  
Fixed maturity securities, available for sale, gross unrealized gains 41,565 437,456  
Fixed maturity securities, available for sale, gross unrealized losses [2] (574,834) (3,042)  
Fixed maturity securities, available for sale, allowance for credit losses 0 (2,776) (2,844)
Fixed maturity securities, available for sale 3,822,982 3,927,201  
Foreign corporate securities and foreign governments      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 748,770 380,646  
Fixed maturity securities, available for sale, gross unrealized gains 11,661 22,742  
Fixed maturity securities, available for sale, gross unrealized losses [2] (83,579) (843)  
Fixed maturity securities, available for sale, allowance for credit losses 0 0  
Fixed maturity securities, available for sale 676,852 402,545  
Corporate securities      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 27,706,440 31,084,629  
Fixed maturity securities, available for sale, gross unrealized gains 146,065 3,614,047  
Fixed maturity securities, available for sale, gross unrealized losses [2] (3,687,370) (38,442)  
Fixed maturity securities, available for sale, allowance for credit losses (3,214) 0 (60,193)
Fixed maturity securities, available for sale 24,161,921 34,660,234  
Residential mortgage backed securities      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 1,492,242 1,056,778  
Fixed maturity securities, available for sale, gross unrealized gains 11,870 70,434  
Fixed maturity securities, available for sale, gross unrealized losses [2] (126,368) (2,093)  
Fixed maturity securities, available for sale, allowance for credit losses (133) (70) $ (1,734)
Fixed maturity securities, available for sale 1,377,611 1,125,049  
Commercial mortgage backed securities      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 4,098,755 4,708,878  
Fixed maturity securities, available for sale, gross unrealized gains 493 149,152  
Fixed maturity securities, available for sale, gross unrealized losses [2] (411,770) (17,719)  
Fixed maturity securities, available for sale, allowance for credit losses 0 0  
Fixed maturity securities, available for sale 3,687,478 4,840,311  
Other asset backed securities      
Debt Securities, Available-for-sale [Line Items]      
Fixed maturity securities, available for sale, amortized cost [1] 6,289,923 5,226,660  
Fixed maturity securities, available for sale, gross unrealized gains 14,068 95,304  
Fixed maturity securities, available for sale, gross unrealized losses [2] (395,289) (50,107)  
Fixed maturity securities, available for sale, allowance for credit losses 0 0  
Fixed maturity securities, available for sale 5,908,702 5,271,857  
Fixed Maturity Securities, Available For Sale      
Debt Securities, Available-for-sale [Line Items]      
Accrued interest receivable $ 425,400 $ 400,700  
[1] Amortized cost excludes accrued interest receivable of $425.4 million and $400.7 million as of December 31, 2022 and 2021, respectively.
[2] Gross unrealized losses are net of allowance for credit losses.