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Organization and Basis of Presentation (Details) member in Millions, $ in Millions |  |  |  | 6 Months Ended
--- | --- | --- | --- | ---
Jul. 17, 2020 USD ($) | Jul. 01, 2020 USD ($) | Apr. 30, 2020 USD ($) | Jun. 30, 2020 segment state member Lease_Renewal_Option
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments (in segment) | segment |  |  |  | 2
Magellan complete care |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net purchase price |  |  | $ 820 |
Health Plans |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Number of states in which entity operates (in state) | state |  |  |  | 14
Number of members eligible for the health care programs, approximately (in member) | member |  |  |  | 3.6
Additional contract term | Lease_Renewal_Option |  |  |  | 6
Contract term renewal option period |  |  |  | 2 years
Minimum | Health Plans |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contract term |  |  |  | 3 years
Maximum | Health Plans |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contract term |  |  |  | 5 years
Your care health plan inc | New york | Subsequent event |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Purchase price of assets |  | $ 42 |  |
Certain assets of passport health plan | Subsequent event |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Purchase price of assets | $ 20 |  |  |

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