XML 65 R48.htm IDEA: XBRL DOCUMENT v3.25.2
Investment Information - Summary of available for sale securities (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value $ 33,120   $ 29,819      
Gross Unrealized Gains 445   181      
Gross Unrealized Losses (395)   (694)      
Allowance for Expected Credit Losses (28)   (22)      
Cost or Amortized Cost 33,098   30,354      
Fixed maturities            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 30,332   27,035      
Gross Unrealized Gains 442   179      
Gross Unrealized Losses (394)   (692)      
Allowance for Expected Credit Losses (28) $ (21) (22) $ (27) $ (32) $ (28)
Cost or Amortized Cost 30,312   27,570      
Corporate bonds            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 14,429   12,487      
Gross Unrealized Gains 273   110      
Gross Unrealized Losses (218)   (346)      
Allowance for Expected Credit Losses (16) (12) (12) (16) (24) (20)
Cost or Amortized Cost 14,390   12,735      
U.S. government and government agencies            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 6,585   6,710      
Gross Unrealized Gains 38   8      
Gross Unrealized Losses (48)   (149)      
Allowance for Expected Credit Losses 0   0      
Cost or Amortized Cost 6,595   6,851      
Asset backed securities            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 2,770   2,900      
Gross Unrealized Gains 18   19      
Gross Unrealized Losses (20)   (32)      
Allowance for Expected Credit Losses (10)   (8)      
Cost or Amortized Cost 2,782   2,921      
Non-U.S. government securities            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 3,149   2,538      
Gross Unrealized Gains 82   30      
Gross Unrealized Losses (70)   (107)      
Allowance for Expected Credit Losses (2) $ (1) (1) $ (1) $ (1) $ (1)
Cost or Amortized Cost 3,139   2,616      
Commercial mortgage backed securities            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 838   1,058      
Gross Unrealized Gains 7   6      
Gross Unrealized Losses (7)   (11)      
Allowance for Expected Credit Losses 0   (1)      
Cost or Amortized Cost 838   1,064      
Residential mortgage backed securities            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 2,386   1,079      
Gross Unrealized Gains 24   6      
Gross Unrealized Losses (24)   (31)      
Allowance for Expected Credit Losses 0   0      
Cost or Amortized Cost 2,386   1,104      
Municipal bonds            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 175   263      
Gross Unrealized Gains 0   0      
Gross Unrealized Losses (7)   (16)      
Allowance for Expected Credit Losses 0   0      
Cost or Amortized Cost 182   279      
Short-term investments            
Debt Securities, Available-for-sale [Line Items]            
Estimated Fair Value 2,788   2,784      
Gross Unrealized Gains 3   2      
Gross Unrealized Losses (1)   (2)      
Allowance for Expected Credit Losses 0   0      
Cost or Amortized Cost $ 2,786   $ 2,784