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Investments (Amortized Cost and Fair Value of Fixed Maturities by Contractual Maturities) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Available For Sale Securities Debt Maturities Amortized Cost
Due in one year or less	$ 1,408
Due after one year through five years	9,847
Due after five year through ten years	11,466
Due after ten years	27,936
Asset and mortgage-backed securities	6,951
Total	57,608	$ 55,873
Available For Sale Securities Debt Maturities Fair Value
Due in one year or less	1,407
Due after one year through five years	9,730
Due after five year through ten years	10,701
Due after ten years	24,989
Asset and mortgage-backed securities	6,467
Total	$ 53,294	$ 60,749

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