XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.19.1

Organization and Basis of Presentation (Details) member in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 member State Segment
Basis Of Presentation [Line Items] |
Number of reportable segments (in segment) | Segment | 2
Health Plans |
Basis Of Presentation [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 | 3.4
Minimum contract terms | 3 years
Maximum contract terms | 5 years

X
- Definition Basis Of Presentation [Line Items] + References No definition available. + Details
Name: | moh_BasisOfPresentationLineItems
Namespace Prefix: | moh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum contract term. + References No definition available. + Details
Name: | moh_MaximumContractTerm
Namespace Prefix: | moh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum contract term. + References No definition available. + Details
Name: | moh_MinimumContractTerm
Namespace Prefix: | moh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of members eligible for the health care programs. + References No definition available. + Details
Name: | moh_NumberOfMembersEligibleForTheHealthCarePrograms
Namespace Prefix: | moh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- 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 No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=moh_HealthPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |