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Significant Accounting Policies - Narrative (Details) people in Millions, patient in Millions, $ in Millions | 3 Months Ended
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Mar. 31, 2022 USD ($) people Segment store clinic state patient | Mar. 31, 2021 USD ($)
Significant Accounting Policies [Line Items] |  |
Number of pharmacy plan members | people | 110 |
Number of patients served per year | patient | 1 |
Number of reportable segments | Segment | 4 |
Expenses from transactions with related party | $ 15 | $ 9
Other revenues from transactions with related party | 21 | 18
Loss on assets held for sale | $ 41 | $ 0
Heartland Healthcare Services |  |
Significant Accounting Policies [Line Items] |  |
Number of states in which entity operates | state | 4 |
Retail/ LTC |  |
Significant Accounting Policies [Line Items] |  |
Number of retail locations (more than) | store | 9,000 |
Number of walk in medical clinics | clinic | 1,100 |
Health Care Benefits |  |
Significant Accounting Policies [Line Items] |  |
Number of people served | people | 35 |
Number of states in which the Company has entered the individual public health insurance exchange | state | 8 |
Loss on assets held for sale | $ 41 |

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- Definition Individual Public Health Insurance Exchanges, Submitted Regulatory Filings, Number of States + References No definition available. + Details
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- Definition Number Of People Served + References No definition available. + Details
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- Definition Number of Patients Served per Year + References No definition available. + Details
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- Definition Number of Pharmacy Plan Members + References No definition available. + Details
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- Definition Number of Walk In Medical Clinics + References No definition available. + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599 + Details
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