Investments - Available-for-Sale Securities by Contractual Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost
Amortized Cost	$ 88,978	$ 88,231
Fair Value
Total fixed maturity AFS securities	81,900	$ 82,300
Fixed maturity AFS securities other than structured securities
Amortized Cost
Due in one year or less	3,506
Due after one year through five years	18,257
Due after five years through ten years	14,468
Due after ten years	35,082
Amortized Cost	71,313
Fair Value
Due in one year or less	3,490
Due after one year through five years	17,778
Due after five years through ten years	13,567
Due after ten years	30,010
Total fixed maturity AFS securities	64,845
Structured securities (RMBS, CMBS, ABS)
Amortized Cost
Amortized Cost	17,665
Fair Value
Total fixed maturity AFS securities	$ 17,055