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Investments - Investments - Fixed Maturities, AFS, by Contractual Maturity Year (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Amortized Cost    
One year or less $ 1,547 $ 1,308
Over one year through five years 9,550 9,564
Over five years through ten years 8,392 7,687
Over ten years 9,791 10,208
Subtotal 29,280 28,767
Mortgage-backed and asset-backed securities 16,510 15,771
Fixed maturities, available-for-sale, at fair value, amortized cost 45,790 44,538
Fair Value    
One year or less 1,543 1,298
Over one year through five years 9,476 9,414
Over five years through ten years 8,137 7,334
Over ten years 9,007 9,368
Subtotal 28,163 27,414
Mortgage-backed and asset-backed securities 16,041 15,153
Fixed maturities, available-for-sale, at fair value (amortized cost of $54,478 and $53,805) $ 44,204 $ 42,567