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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-Topic 280
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-Section 50
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The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 230
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-Section 45
-Paragraph 13
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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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