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Litigation (Details) $ in Millions | Jun. 30, 2021 USD ($)
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Settled Litigation |
Loss Contingencies [Line Items] |
Disallowance | $ 7.3
Pending Litigation |
Loss Contingencies [Line Items] |
Disallowance | $ 19.9

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- Definition Loss Contingency, Disallowed Amount + References No definition available. + Details
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Namespace Prefix: | mms_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition 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. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_SettledLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |