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Investments (Contractual Maturity Dates For Fixed-Maturity And Short-Term Investments) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Amortized cost |  |
Due in one year or less | $ 973 |
Due after one year through five years | 4,407 |
Due after five years through ten years | 3,592 |
Due after ten years | 5,389 |
Total | 14,361 | $ 12,979
Fair value |  |
Due in one year or less | 964 |
Due after one year through five years | 4,304 |
Due after five years through ten years | 3,474 |
Due after ten years | 5,049 |
Total | $ 13,791 | $ 12,132
% of fair value |  |
Due in one year or less | 7.00% |
Due after one year through five years | 31.20% |
Due after five years through ten years | 25.20% |
Due after ten years | 36.60% |
Total | 100.00% |

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