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v3.19.1

Leases - Narrative (Details) | 3 Months Ended
--- | ---
Mar. 31, 2019
Minimum |
Lessee, Lease, Description [Line Items] |
Remaining lease terms | 1 month
Maximum |
Lessee, Lease, Description [Line Items] |
Remaining lease terms | 12 years

X
- Definition Lessee, Operating Lease, Remaining Lease Term + References No definition available. + Details
Name: | man_LesseeOperatingLeaseRemainingLeaseTerm
Namespace Prefix: | man_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |