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Organization and Basis of Presentation (Details) security in Thousands, member in Thousands, $ in Millions |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 07, 2021 USD ($) | Sep. 30, 2021 | Dec. 31, 2021 USD ($) member position | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Oct. 25, 2021 member | Aug. 31, 2021 security
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Contract term |  | 4 years |  |  |  |  |
Premium revenue |  |  | $ 26,855 | $ 18,299 | $ 16,208 |  |
Purchase price |  |  | $ 176 |  |  |  |
Extension period |  | 2 years |  |  |  |  |
Health Plans | New York |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Number of members covered | member |  |  |  |  |  | 310 |
New York Acquisition—Medicaid |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Purchase price | $ 106 |  |  |  |  |  |
New York Acquisition—Medicaid | AgeWell New York | New York |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Number of members covered | security |  |  |  |  |  |  | 13
Premium revenue |  |  |  | 700 |  |  |
Health Plans |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Number of members eligible for the health care programs, approximately | member |  |  | 5,200 |  |  |  |
Number of states with programs | position |  |  | 18 |  |  |  |
Premium revenue |  |  | $ 26,855 | 18,299 | 16,208 |  |
Health Plans | New York |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Premium revenue |  |  | $ 1,429 | $ 309 | $ 179 |  |
Minimum | Health Plans |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Contract term |  |  | 3 years |  |  |  |
Maximum | Health Plans |  |  |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |  |  |
Contract term |  |  | 5 years |  |  |  |

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