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Medical Costs Payable, Incurred and Paid Medical Cost Development (Details) - Health Insurance Product Line [Member] - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Net Incurred Medical Costs | $ 399,659 |
Net Cumulative Medical Payments | (370,993) |
Net remaining outstanding liabilities prior to 2021 | 390 |
Total Medical costs payable | 29,056 |
Short-duration Insurance Contracts, Accident Year 2021 [Member] |  |
Net Incurred Medical Costs | 188,407 | $ 188,631
Net Cumulative Medical Payments | (186,944) | $ (165,524)
Short-duration Insurance Contracts, Accident Year 2022 [Member] |  |
Net Incurred Medical Costs | 211,252 |
Net Cumulative Medical Payments | $ (184,049) |

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