Investments - Available-for-Sale Securities by Contractual Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost
Amortized Cost	$ 88,231	$ 110,944
Fair Value
Total fixed maturity AFS securities	82,300	$ 99,465
Fixed maturity AFS securities other than structured securities
Amortized Cost
Due in one year or less	4,389
Due after one year through five years	17,444
Due after five years through ten years	15,405
Due after ten years	35,198
Amortized Cost	72,436
Fair Value
Due in one year or less	4,354
Due after one year through five years	16,858
Due after five years through ten years	14,403
Due after ten years	31,696
Total fixed maturity AFS securities	67,311
Structured securities (RMBS, CMBS, ABS)
Amortized Cost
Amortized Cost	15,795
Fair Value
Total fixed maturity AFS securities	$ 14,989