XML 75 R65.htm IDEA: XBRL DOCUMENT
v3.23.3

Derivative Financial Instruments and Fair Value Measurements - Impact of Changes in Fair Values of Derivatives Designated as Cash Flow Hedges on OCI, AOCI and Earnings (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivative [Line Items] |  |  |  |
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration] | Interest And Other Non Operating Expenses | Interest And Other Non Operating Expenses | Interest And Other Non Operating Expenses | Interest And Other Non Operating Expenses
(Loss) Gain Reclassified from AOCI into Income | $ 0.1 | $ 0.1 |  |
Designated as hedging instrument |  |  |  |
Derivative [Line Items] |  |  |  |
(Loss) Gain Reclassified from AOCI into Income |  |  | $ 0.3 | $ 0.1
Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
(Loss) Gain Reclassified from AOCI into Income | 3.3 | 8.8 | 7.4 | 16.1
Cash flow hedge | Designated as hedging instrument |  |  |  |
Derivative [Line Items] |  |  |  |
(Loss) Gain Reclassified from AOCI into Income |  |  | 0.0 | (0.6)
Cash flow hedge | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
(Loss) Gain Reclassified from AOCI into Income | (3.3) | (8.4) | (7.4) | (16.1)
Cross-currency swap | Cash flow hedge | Designated as hedging instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (Loss) Recognized in OCI | 0.0 | 2.2 | 0.0 | 4.5
(Loss) Gain Reclassified from AOCI into Income | 0.0 | 2.1 | 0.0 | 4.2
Cross-currency swap | Cash flow hedge | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (Loss) Recognized in OCI | (0.5) | 1.7 | (2.2) | (1.4)
Cross-currency swap | Net Investment Hedging [Member] | Designated as hedging instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (Loss) Recognized in OCI | 6.5 | 12.2 | (10.6) | 23.4
Foreign currency forward contracts | Cash flow hedge | Designated as hedging instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (Loss) Recognized in OCI | 0.0 | 0.1 | 0.0 | (0.2)
(Loss) Gain Reclassified from AOCI into Income | 0.0 | (0.3) |  |
Intercompany CHF note [Member] | Cash flow hedge | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (Loss) Recognized in OCI | 0.0 | 0.0 | 0.0 | 0.0
Forward Starting Interest Swap | Cash flow hedge | Designated as hedging instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (Loss) Recognized in OCI | $ 0.0 | $ 0.0 | $ 0.0 | $ 2.0

X
- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from effective portion of derivative instrument reclassified from accumulated other comprehensive income (AOCI) into income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4D + Details
Name: | us-gaap_DerivativeInstrumentGainLossReclassifiedFromAociIntoIncomeEffectivePortionStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | duration

X
- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (b) -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4D Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after tax and adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge, attributable to parent. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (dd) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (bb) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C + Details
Name: | us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CurrencySwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=man_IntercompanyChfNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |