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Investments - Investments - Fixed Maturities, AFS, by Contractual Maturity Year (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized Cost |  |
One year or less | $ 1,535 | $ 1,526
Over one year through five years | 10,109 | 9,670
Over five years through ten years | 6,915 | 6,568
Over ten years | 9,490 | 9,370
Subtotal | 28,049 | 27,134
Mortgage-backed and asset-backed securities | 14,986 | 14,592
Fixed maturities, available-for-sale, at fair value, amortized cost | 43,035 | 41,726
Fair Value |  |
One year or less | 1,514 | 1,501
Over one year through five years | 9,815 | 9,433
Over five years through ten years | 6,520 | 6,211
Over ten years | 8,708 | 8,851
Subtotal | 26,557 | 25,996
Mortgage-backed and asset-backed securities | 14,257 | 13,822
Fixed maturities, available-for-sale, at fair value (amortized cost of $54,478 and $53,805) | $ 40,814 | $ 39,818

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