v3.26.1
Investments - Contractual Maturities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Amortized Cost    
Less: loaned securities and securities sold under repurchase agreements $ 105,356 $ 141,878
Investment, Type [Extensible Enumeration] Fixed Maturities [Member]  
Total fixed-maturities available for sale, Amortized Cost $ 6,561,040 4,550,954
Fair Value    
Less: loaned securities and securities sold under repurchase agreements 105,356 141,878
Total fixed-maturities available for sale, Fair Value 6,226,793 4,271,916
Non asset-backed securities    
Amortized Cost    
Due in one year or less 203,071  
Due after one year through five years [1] 2,022,626  
Due after five years through 10 years [1] 777,228  
Due after 10 years [1] 895,333  
Fair Value    
Due in one year or less 201,757  
Due after one year through five years [1] 1,976,981  
Due after five years through 10 years [1] 759,853  
Due after 10 years [1] 705,082  
Asset-backed and mortgage-backed securities    
Amortized Cost    
Asset-backed and mortgage-backed securities [2] 2,742,072  
Fair Value    
Asset-backed and mortgage-backed securities [2] 2,659,621  
Total fixed-maturities available for sale    
Amortized Cost    
Total $ 6,640,330 $ 4,607,615
Investment, Type [Extensible Enumeration] Fixed Maturities AFS and Trading Securities [Member] Fixed Maturities AFS and Trading Securities [Member]
Total fixed-maturities available for sale, Amortized Cost $ 6,561,040 $ 4,550,954
Fair Value    
Total 6,303,294 4,326,071
Total fixed-maturities available for sale, Fair Value 6,226,793 4,271,916
Loaned securities, amortized cost | Total fixed-maturities available for sale    
Amortized Cost    
Less: loaned securities and securities sold under repurchase agreements [3] 79,290 56,661
Fair Value    
Less: loaned securities and securities sold under repurchase agreements [3] 79,290 56,661
Loaned securities, fair value | Total fixed-maturities available for sale    
Amortized Cost    
Less: loaned securities and securities sold under repurchase agreements [3] 76,501 54,155
Fair Value    
Less: loaned securities and securities sold under repurchase agreements [3] $ 76,501 $ 54,155
[1] Actual maturities may differ as a result of calls before scheduled maturity.
[2] Includes RMBS, CMBS, CLO, other ABS and mortgage insurance-linked notes, which are not due at a single maturity date.
[3] Included in other assets on our condensed consolidated balance sheets. See “Loaned Securities and Securities Sold Under Repurchase Agreements” below for a discussion of our securities lending and repurchase agreements.