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Segments - Narrative (Details) | Mar. 31, 2022 segment
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Segment Reporting [Abstract] |
Reportable segment | 4

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- Definition Number Of Reportable Segment + References No definition available. + Details
Name: | moh_NumberOfReportableSegment
Namespace Prefix: | moh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration