Investments (Amortized Cost and Fair Value of Fixed Maturities by Contractual Maturities) (Details) - USD ($) $ in Millions	Jun. 30, 2025		Dec. 31, 2024
Available For Sale Securities Debt Maturities Amortized Cost
Due in one year or less	$ 1,947
Due after one year through five years	12,853
Due after five year through ten years	14,919
Due after ten years	52,287
Asset and mortgage-backed securities	9,882
Total	91,888		$ 82,907
Available For Sale Securities Debt Maturities Fair Value
Due in one year or less	1,955
Due after one year through five years	12,799
Due after five year through ten years	14,828
Due after ten years	46,847
Asset and mortgage-backed securities	9,614
Total	$ 86,043	[1]	$ 77,617	[2]

[1] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of June 30, 2025, the fair value of such investments was $954 million.

[2] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2024, the fair value of such investments was $966 million