v3.24.1.u1
Equity - Reclassification of significant items out of accumulated other comprehensive income (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Reclassification of significant items out of Accumulated Other Comprehensive Income    
Total net realized losses $ (320) $ (1,458)
Net income (loss) 827 (453)
Amount Reclassified from AOCI    
Reclassification of significant items out of Accumulated Other Comprehensive Income    
Net income (loss) (342) (101)
Unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses was taken | Amount Reclassified from AOCI    
Reclassification of significant items out of Accumulated Other Comprehensive Income    
Total net realized losses (6) (14)
Net income (loss) (6) (14)
Unrealized appreciation (depreciation) of all other investments | Amount Reclassified from AOCI    
Reclassification of significant items out of Accumulated Other Comprehensive Income    
Total net realized losses (336) (87)
Net income (loss) $ (336) $ (87)